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CONTENTS 2025, 66 (2):  0-0.  Abstract ( 18 )   PDF (10505KB) ( 72 )   Related Articles | Metrics

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Exploring the development path of creative agriculture in Zhejiang Province from the perspective of rural revitalization ZHAO Yuhe, HU Bao 2025, 66 (2):  281-287.  DOI: 10.16178/j.issn.0528-9017.20240047 Abstract ( 28 )   HTML ( 4 )   PDF (1207KB) ( 115 )   With the significant improvement in the level and quality of agricultural development, creative agriculture, as a new type of agricultural format, is emerging in China, providing strong momentum for high-quality agricultural development and comprehensive rural revitalization. As a demonstration zone for common prosperity, Zhejiang Province has a solid foundation, broad prospects, and significant significance for the development of creative agriculture. Studying the development path of creative agriculture in Zhejiang Province has important practical significance and value. In this study, SWOT analysis method was used to analyze the environmental conditions for the development of creative agriculture in Zhejiang Province on the basis of briefly describing the connotation and development trend of creative agriculture. Starting from the connotation, characteristics, and typical cases of the model, the typical model of creative agriculture development in Zhejiang Province was summarized, and the development path of creative agriculture in Zhejiang Province was deeply explored from the aspects of business entities, cultural excavation, development model, publicity and promotion, organizational leadership, etc. Figures and Tables | References | Related Articles | Metrics

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Logic and suggestion of promoting the carrying capacity of the county and the project of thousand villages demonstration and ten thousand villages renovation YANG Xubin, HUANG Hao, YE Bo, FAN Jiliang 2025, 66 (2):  288-292.  DOI: 10.16178/j.issn.0528-9017.20231216 Abstract ( 21 )   HTML ( 0 )   PDF (1086KB) ( 77 )   Improving the carrying capacity of the county is an important part of the urbanization construction with the county as an important carrier. The project of thousand villages demonstration and ten thousand villages renovation is a key move to promote rural revitalization. Zhejiang innovatively combined the two works to promote the urban-rural integration with the county as a unit. In this paper, on the basis of in-depth analysis of the three logic and four value orientation of promoting the carrying capacity of the county and the project of thousand villages demonstration and ten thousand villages renovation, the corresponding countermeasures and suggestions are put forward to further promote the integration of urban and rural development, accelerate the Chinese-style rural modernization of Zhejiang first, and help the construction of common prosperity demonstration area. References | Related Articles | Metrics

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Effects of chemical fertilizer reduction on soil fertility, rice yield and nitrogen and phosphorus nutrient uptake in Tai Lake region ZU Ruochuan, WANG Jingbo 2025, 66 (2):  293-297.  DOI: 10.16178/j.issn.0528-9017.20231191 Abstract ( 46 )   HTML ( 1 )   PDF (1131KB) ( 136 )   In order to solve the problem of excessive chemical fertilizer application and improper application method in rice production, provide theoretical support for reducing dosage and increasing efficiency of rice chemical fertilizers, effects of different fertilization treatments on rice yield, nutrient uptake and soil physicochemical properties were compared by comparing the effects of different fertilization treatments, and the implementation effect of different chemical fertilizer reduction measures was discussed. Compared with CF treatment, the yield of rice under FF and OF treatments were significantly increased by 7.0% and 8.6%, respectively, but the yield increase effect of BF treatment was not significant. Compared with CF treatment, the effective panicle number of rice treated with OF treatment was significantly increased by 11.3%. There were no significant differences in grain number per panicle and 1 000-grain weight among different fertilization treatments. Compared with CF treatment, the nitrogen uptake in the shoots of OF and BF treatments increased significantly by 15.3% and 15.9%, respectively. Compared with CF treatment, the partial productivity of nitrogen fertilizer in FF, OF and BF treatments were significantly increased by 15.9%, 17.7% and 14.0%, respectively. Compared with CF treatment, the phosphorus uptake in the shoots of BF treatment was significantly increased by 10.7%, while there was no significant difference between FF treatment and CF treatment. Compared with CF treatment, the partial productivity of phosphate fertilizer in FF and BF treatments were significantly increased by 78.3% and 76.4%. Compared with CF treatment, chemical fertilizer reduction treatment could maintain soil total nitrogen content. Compared with CF treatment, the soil organic matter content of OF and BF treatments was significantly increased by 7.8% and 9.3%, respectively. Considering the rice yield, nutrient uptake and soil fertility, under the conditions of 7.7% reduction in nitrogen, no phosphorus application and 42.9% reduction in potassium, the OF treatment increased the content of soil organic matter, promoted the uptake and accumulation of nitrogen in the shoots of rice, and increased the number of effective panicles of rice, which could increase the yield of rice and improve the partial productivity of fertilizer, so it was the best fertilization measure to reduce the amount of chemical fertilizer and increase the efficiency of chemical fertilizer. Figures and Tables | References | Related Articles | Metrics

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Study on the effect of straw mixed fertilizer on rice yield and soil fertility JIANG Shenyue, WANG Lifang, ZHANG Haijuan, SHAO Sainan, JIANG Huaqin, MENG Qingjiu, QIAN Yi, XUE Zhaokun, JIANG Yugen, YE Zhengqian 2025, 66 (2):  298-303.  DOI: 10.16178/j.issn.0528-9017.20231065 Abstract ( 35 )   HTML ( 2 )   PDF (1956KB) ( 124 )   Straw is the main waste in agricultural production. Due to its large volume, it is difficult to collect and dispose. For a long time, it is often piled up, burned or directly returned to the field, which affects the quality of the surrounding environment. To address the challenges of agricultural straw and improve resource utilization, a straw mixed fertilizer was developed and its effects were evaluated on rice yield and soil fertility through a three-year field experiment. Results demonstrated that application of straw mixed fertilizer increased soil organic matter, available phosphorus, and potassium. Soil pH value and salinity were effectively regulated under straw mixed fertilizer treatments. Compared to other treatments, straw mixed fertilizer application achieved better rice yield. This study confirms that straw mixed fertilizer not only resolves straw disposal issues but also promotes sustainable agriculture by improving soil. Long-term effects of straw mixed fertilizer on soil fertility is still needed to be further investigated. Figures and Tables | References | Related Articles | Metrics

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Comparative study on bowl seedling machine transplanting and carpet seedling machine transplanting under different sowing dates of early rice WANG Honghui, ZHANG Xianping, WANG Qinxia, ZHU Weijun, QIN Yebo, WANG Zhigang, JIANG Libin 2025, 66 (2):  304-308.  DOI: 10.16178/j.issn.0528-9017.20240150 Abstract ( 37 )   HTML ( 1 )   PDF (1112KB) ( 115 )   To explore the suitable sowing date and mechanical transplanting method for early rice in Wenling City, a comparative experiment was conducted on bowl seedling machine transplanting and carpet seedling machine transplanting under different sowing dates of early rice. The results showed that the resistance and production stability of bowl seedling machine transplanting early rice were significantly better than those of carpet seedlings. The sowing date of bowl seedlings could be 10-15 days earlier than that of carpet seedlings, and the optimal sowing date is March 1st. The maturity date of early rice bowl seedlings was 3-6 days earlier than that of carpet seedlings, and 7-10 days earlier than that of early rice direct-seedings. In the production of early rice, bowl seedling transplanting with soil and without planting injury was conducive to seedling survival and tillering occurrence. Compared with carpet seedling machine transplanting, it had the advantage of early tillering for 10 days, the tillering outbreak period was 15-20 days after transplanting. Most of the tillers were effective tillers at low nodes, which were easy to form large panicles. Under the same sowing date, the bowl seedling machine transplanting early rice had the advantage of increasing yield than carpet seedling machine transplanting. The yield increase was mainly due to the more panicles, larger panicles and more grains caused by the early tillering of bowl seedlings. Figures and Tables | References | Related Articles | Metrics

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Efficient high yield seed production technology of long-grain indica-japonica hybrid rice variety Zheyou 77 SHEN Jianxun, QI Yongbin, WANG Linyou, CHEN Mingxiang, LYU Xiangchao, ZHANG Haodi, HUANG Huifang 2025, 66 (2):  309-312.  DOI: 10.16178/j.issn.0528-9017.20240554 Abstract ( 40 )   HTML ( 1 )   PDF (1105KB) ( 125 )   Zheyou 77 is a new indica-japonica hybrid rice variety with long-grain bred by the Institute of Crop Sciences and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Guzhiyu (Huzhou, Zhejiang) Agricultural Technology Co., Ltd., and Hangzhou Seed Industry Group Co., Ltd. It has the characteristics of high yield, excellent rice quality, good color conversion, etc. It has been approved by Zhejiang Crop Variety Committee in 2024. It is suitable for single season late rice planting in Zhejiang Province. In order to accelerate the popularization of the new indica-japonica hybrid rice variety Zheyou 77 and improve the seed production yield of the new variety, the parental characteristics and high yield and efficient seed production technology of Zheyou 77 were introduced in this paper. References | Related Articles | Metrics

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Effects of spraying iron chlorine e6 at different stages on the lodging resistance of japonica rice WENG Fei, WANG Yi, XU Naixia, LI Qingkui 2025, 66 (2):  313-317.  DOI: 10.16178/j.issn.0528-9017.20240794 Abstract ( 30 )   HTML ( 2 )   PDF (1263KB) ( 126 )   To investigate the effect of foliar application of iron chlorine e6 on the lodging resistance of rice stems and their morphological and physiological characteristics, a field experiment was conducted using japonica rice variety W3668. Foliar application of iron chlorine e6, especially at the jointing stage, was proved to be an effective method for enhancing the lodging resistance of rice stems. Application at the jointing stage significantly increased stem diameter and both the inner and outer diameters of the stem, while application at the seedling stage notably increased stem wall thickness. Moreover, compared with foliar application at the seedling stage, application at the jointing stage more effectively controlled the elongation of the basal internodes and significantly enhanced their filling, thereby increasing the mechanical strength of the stems. In terms of yield, the jointing stage application significantly improved rice yield by increasing the number of grains per panicle and the seed-setting rate, thus optimizing the yield components. The study indicates that iron chlorine e6 application at the jointing stage has a remarkable effect on improving both rice lodging resistance and yield. Figures and Tables | References | Related Articles | Metrics

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Effect of seedling fertilizer application on agronomic traits and yield of direct seedling Brassica napus L. in paddy rice field WU Meijuan, HUANG Hongming, WANG Nuan, SHAO Ting, JIANG Hongqi 2025, 66 (2):  318-320.  DOI: 10.16178/j.issn.0528-9017.20240101 Abstract ( 30 )   HTML ( 0 )   PDF (1092KB) ( 119 )   To study on the effects of seedling fertilizer application on the agronomic traits and yield of direct seedling Brassica napus L. in paddy rice field,this study used Zheyou 505 as test variety.The results showed that the growth period was delayed to varying degrees, the plant height and number of branches per plant increased accordingly with the increase of nitrogen fertilizer application during the seedling stage. The number of pods per plant showed a trend of first increasing and then decreasing with the increase of seedling fertilizer application, the difference in number of seeds per pod was not significant, and the weight of 1 000 grains increased with the increase of seedling fertilizer application. The yield performance showed a significant increase followed by a basic plateau and then a decrease. The oil content of rapeseed decreased with the increase of seedling fertilizer application. The application rate using about 204.75 kg·hm-2 total nitrogen and 225 kg·hm-2 urea (N 46%) provided the best yield and quality of Brassica napus L.. Figures and Tables | References | Related Articles | Metrics

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Evaluation of soil nutrients and fertility quality in tea plantations in Fuyang District, Hangzhou City SHAO Sainan, YANG Qing, ZHANG Haijuan, DONG Daixing, MENG Qingjiu, WEN Junqing, JIANG Huaqin, QIAN Yi, JIANG Yugen 2025, 66 (2):  321-328.  DOI: 10.16178/j.issn.0528-9017.20231049 Abstract ( 36 )   HTML ( 0 )   PDF (1271KB) ( 99 )   Tea industry is one of the leading industries of agricultural in Fuyang District, and the analysis and evaluation of soil nutrients, fertility quality and land transfer value of tea plantations can provide more scientific data support for guiding fertilization and land transfer of tea plantations in Fuyang District. In this study, 205 soil samples were collected from 22 towns and districts in Fuyang District to analyze 9 soil nutrients including pH value, organic matter, total nitrogen and other soil indicators that affect tea yield and quality. The fuzzy mathematical membership function model was used to calculate the comprehensive index of soil fertility (IFI), and a comprehensive analysis was made on soil nutrients, fertility quality and land transfer value in Fuyang District. The results showed that the pH value of tea plantation soil in Fuyang District was 3.06-5.99. The average nutrient classification of six soil nutrients including soil organic matter(SOM), total nitrogen(TN), available phosphorus(AP), available potassium(AK), available zinc(AZn) and available copper(ACu) was above level Ⅰ, and the average nutrient classification of two indicators including available sulfur(AS) and exchangeable magnesium(EMg) was within level Ⅱ. The comprehensive index of soil fertility was 0.208-0.880, with 19.02% of tea plantations reaching level Ⅰ standard, 18.54% reaching level Ⅱ standard, and 62.44% reaching level Ⅲ-Ⅳ standard. The land value grade of tea gardens in each town in Fuyang District was as follows: level Ⅰ accounted for 40.49%, level Ⅱ-Ⅲ accounted for 31.22%, and level Ⅳ accounted for 28.29%. The results showed that most tea plantations in Fuyang District were suitable for tea tree growth, but some tea gardens had serious soil acidification problems. The SOM, TN, AP, AK, AZn and ACu contents were rich, while the AS and EMg contents were relatively insufficient, which requires targeted adjustment to the existing fertilization plan. Figures and Tables | References | Related Articles | Metrics

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Study on tobacco-based crop rotation and intercropping mode in Xuchang tobacco area SUN Xiaowei, YAO Jian, WANG Jing, HE Bing, ZHANG Xingbo, LI Jianhua, XUE Gang 2025, 66 (2):  329-335.  DOI: 10.16178/j.issn.0528-9017.20231033 Abstract ( 31 )   HTML ( 0 )   PDF (1145KB) ( 90 )   In order to improve the quality of tobacco leaves, increase the income of tobacco farmers, and improve the enthusiasm of tobacco farmers, the rotation and intercropping mode of tobacco in Xuchang tobacco area was studied. The demonstration results showed that T3 treatment increased the contents of soil organic matter, total nitrogen, alkali hydrolyzable nitrogen, available phosphorus and available potassium before tobacco transplanting. Compared with T4 treatment, the plant height, stem circumference, pitch, leaf number, maximum leaf length and maximum leaf width of tobacco plants were increased by 13.86%, 35.04%, 8.54%, 13.31%, 6.64% and 13.86%, respectively. The incidence of tobacco mosaic disease was the lowest in T2 treatment at different growth stages of flue-cured tobacco, while the incidence of tobacco black shank disease was the lowest in T3 treatment at different growth stages of flue-cured tobacco. The 667 m2 benefits of T1 treatment was the highest, which was 7 328.00 yuan, which was 36.10%, 59.44% and 15.32% higher than that of T2, T3 and T4 treatments, respectively. Flue-cured tobacco of T1 treatment had the highest overall score of appearance quality. The nicotine content of T1 and T3 treatments was more appropriate, and the conventional chemical composition of tobacco leaves was more harmonious. The sensory quality of tobacco leaves in T1 treatment was the best. In general, T1 treatment is the best in Xuchang tobacco area. Figures and Tables | References | Related Articles | Metrics

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Effects of irrigation water amount and humic acid dosage on yield, quality and water use of tomato SONG Zhi, GUO Xinsong, FAN Zhongqing, QIAO Jiale, YIN Jing, SUN Xiao, LIU Tongxin, HONG Pizheng, DING Fangjun, YANG Yongcheng 2025, 66 (2):  336-343.  DOI: 10.16178/j.issn.0528-9017.20231210 Abstract ( 32 )   HTML ( 1 )   PDF (2051KB) ( 116 )   In order to explore the effects of humic acid application under different irrigation water conditions on the yield, quality and water use of tomato in facilities, three humic acid application treatments were set up under three irrigation water conditions respectively. The effects of these treatments on the growth, photosynthetic characteristics, yield, quality, and water use efficiency of tomato in the facility were studied, and the optimal treatment was selected by principal component analysis. The results showed that the plant height of HA2 and HA3 treatments were significantly higher than that of CK under W2 and W3 treatments at seedling stage. The plant height of W3HA3 treatment before flowering was also significantly higher than that of CK treatment. The net photosynthetic rate and stomatal conductance of W3HA3 treatment were significantly higher than those of CK. The soluble sugar content of W1HA3 and W2HA3 were significantly higher than that of CK. The soluble solids content of CK was significantly lower than that of treatments except W2HA1 and W3HA1. The titratable acid content of W1HA1, W1HA2, W1HA3 and W2HA1 treatments were significantly higher than that of CK. Compared with CK, the yield of W3HA3 treatment was significantly higher. Compared with CK, the water consumption of W1, W2 and W3 treatments were significantly reduced, the water use efficiency was significantly improved, and the irrigation water use efficiency was significantly improved. Furthermore, the comprehensive score of W3HA3 treatment was the highest, that was, 15% reduction in irrigation combined with humic acid instead of 30% rotted chicken manure could promote tomato growth and photosynthesis, and improve tomato yield, quality and water use efficiency. Figures and Tables | References | Related Articles | Metrics

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Effects of different concentrations of NaCl on the growth of cherry tomato seedlings GAO Xianyi, YUE Yani, XU Jingcheng, LIU Shudong, LIN Tingwei, QI Huijuan, WANG Ying, WANG Wei 2025, 66 (2):  344-348.  DOI: 10.16178/j.issn.0528-9017.20240608 Abstract ( 31 )   HTML ( 0 )   PDF (2663KB) ( 82 )   Soil salinization is one of the main reasons limiting the development of agriculture in China. Seedling quality affects later yield. In order to investigate the effects of salt stress on the growth of cherry tomato seedlings, Ouxiuhongying 1 was selected as the material and subjected to salt stress treatment using NaCl solutions with three concentrations (50, 100, 150 mmol·L-1). The results showed that all NaCl treatments had significantly inhibitory effects on plant height, stem diameter, and biomass of cherry tomato. Among them, 150 mmol·L-1 NaCl showed the most significant inhibition, reducing plant height, stem diameter, and above ground biomass by 35.94%, 12.80% and 21.99%, respecctively, compared with the control group. The SPAD values increased with the increasing of NaCl concentration. Meanwhile, compared with the control group, the content of MDA, and the activities of SOD and POD in the root tips of cherry tomato seedlings increased under 100 and 150 mmol·L-1 NaCl. All of these indicate that NaCl treatments have significantly inhibitory effects on the growth and metabolism of cherry tomato seedlings. Figures and Tables | References | Related Articles | Metrics

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Comprehensive evaluation of 11 varieties of fast-growing leafy vegetables in early spring based on the membership function method GUO Ziqing, ZHOU Qin, LOU Tingting, SHENG Ke, ZHOU Wanguan, XU Cheng, ZHU Siyi, ZHU Pu 2025, 66 (2):  349-353.  DOI: 10.16178/j.issn.0528-9017.20231089 Abstract ( 25 )   HTML ( 1 )   PDF (1111KB) ( 82 )   In order to select suitable fast-growing leafy vegetables varieties for winter and spring outdoor planting in the central part of Zhejiang Province, we introduced and collected 11 fast-growing leafy vegetables varieties for cultivar comparison test. Through comparing the biological traits, taste, and yield of each variety, the results showed that Hanfeng Kuaicai had the largest leaf spread (34.07 cm) and the widest leaf (13.64 cm); Zajiaoshanghaibai had the most leaves (31.3 pieces), Lianglv Kuaicai had the highest plant height (20.83 cm) and the longest leaf (21.70 cm); Lixiangheiniu had the highest chlorophyll SPAD value (67.36) and the largest single plant weight (169.91 g), while Shanghaiqing had the best taste. The membership function method was used to comprehensively evaluate the biological traits and taste quality of the 11 leafy green vegetable varieties. Liuyueman had the highest value (0.790), followed by Hanfeng Kuaicai (0.778), while Lianglv Kuaicai had the lowest value (0.137). Therefore, among the 11 varieties, Liuyueman and Hanfeng Kuaicai are suitable for promotion and planting in winter and spring in the central part of Zhejiang Province. Figures and Tables | References | Related Articles | Metrics

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Effects of pig manure instead of partial nitrogen fertilizer on soil quality, yield and vitamin C content of Chinese flowering cabbage YANG Chunya, WU Dongyang, TAN Huiling, YE Yu, ZHAO Zhongqiu, LI Yongtao, XU Huijuan 2025, 66 (2):  354-362.  DOI: 10.16178/j.issn.0528-9017.20231103 Abstract ( 30 )   HTML ( 0 )   PDF (3665KB) ( 119 )   In response to the challenges of harmless treatment and resource utilization of a large amount of livestock and poultry manure produced by large-scale intensive pig farms, this study focuses on the effects of pig manure fertilizer on soil fertility and crop yield improvement. The aim is to provide data support for the resource utilization and technology promotion of pig manure. Selecting Chinese flowering cabbage as the test crop, the experiment was designed with six treatments in the field: CK (no fertilization treatment), CF1 (farmers' habitual fertilization), CF2 (optimized formula fertilizer), PM1 (pig manure replacing 15% N), PM2 (pig manure replacing 30% N) and VC (vermicompost replacing 15% N). Nine indicators, including soil bulk density, soil pH value, soil electrical conductivity, soil ammonium N content, soil nitrate N content, soil available P content and soil available K content, as well as yield and vitamin C of Chinese flowering cabbage, were measured after harvest. The fertilizer effects of different treatments were comprehensively evaluated through principal component analysis and membership function analysis. The results showed that there was no significant difference in soil bulk density among different treatments, and the soil electrical conductivity was low among different treatments. Compared with treatments of CK, CF1, CF2, and VC, the soil pH value, soil ammonium N content and soil available K content of PM1 respectively increased by 4.68%-9.45%, 1.75%-62.62% and 17.81%-109.76%; the soil pH value, soil available P content and soil available K content of PM2 respectively increased by 1.72%-6.36%, 4.96%-152.99% and 12.33%-100.00%. Compared with treatments of CK, CF1 and CF2, the soil nitrate N content of PM1 and PM2 respectively increased by 77.93%-248.65% and 70.69%-234.46%, the yield of Chinese flowering cabbage of PM1 and PM2 respectively increased by 38.3%-1 057.0% and 38.6%-1 060.0%.The soil quality index (SQI) of different treatments is ranked as follows: PM2>PM1>VC>CF2>CF1>CK. There was a significant correlation between yield and vitamin C content of Chinese flowering cabbage at the 0.001 level, and PM2 has the best comprehensive effect on increasing yield and improving quality. In summary, pig manure replacing 30% N was the best recommended fertilization method. Figures and Tables | References | Related Articles | Metrics

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Construction of DNA fingerprinting of vegetable legumes using core-SNP markers WU Xinyi, LIU Na, WANG Baogen, GONG Yaming, LI Guojing 2025, 66 (2):  363-369.  DOI: 10.16178/j.issn.0528-9017.20240558 Abstract ( 27 )   HTML ( 0 )   PDF (2675KB) ( 70 )   Vegetable legumes are important vegetable crops in China. To facilitate the variety protection of vegetable legumes, this study focused on cowpea and vegetable pea as research objects, and constructed the DNA fingerprinting maps of 52 cowpea varieties(lines) and 48 pea germplasm using the species-specific core single nucleotide polymorphism(SNP) markers, respectively. We also evaluated the seed purity for 14 cowpea varieties(lines). Our results showed that SNP markers based on the kompetitive allele-specific PCR(KASP) technology could be used in protecting the new variety rights, distinguishing the variety authenticity and evaluating the seed purity. Meanwhile, we also suggested that we should formulate and publish the technical standards for identifying the vegetable legumes varieties based on SNP markers as soon as possible, which will provide the technical support for the healthy development of seed industry in vegetable legumes. Figures and Tables | References | Related Articles | Metrics

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Effects of reduced fertilization combined with soil amendment application on yield of Asparagus officinalis L. and soil quality under acidic conditions GAO Jingwen, ZHANG Yuanyuan, YANG Yan, WANG Feng 2025, 66 (2):  370-375.  DOI: 10.16178/j.issn.0528-9017.20240143 Abstract ( 30 )   HTML ( 0 )   PDF (2929KB) ( 87 )   Excessive fertilization is one of the key reasons of soil acidification, and developing reasonable fertilization strategies is of great significance for green and sustainable agriculture. Two fertilization modes were adopted on Asparagus officinalis L. in this study: 667 m2 800 kg organic fertilizer+fertilizer reduction (Mode 1) and 667 m2 300 kg soil amendment containing humic acid+667 m2 400 kg organic fertilizer+fertilizer reduction (Mode 2), and their impact on yield of Asparagus officinalis L. and soil quality were studied. The results showed that compared with conventional fertilization, Mode 1 treatment had no significant effect on the number of stems per plant, plant height, stem diameter, first branch height, qualified yield, and total yield of Asparagus officinalis L., but increased the yield of first level Asparagus officinalis L.. Moreover, Mode 2 treatment increased the plant height and stem diameter of Asparagus officinalis L., as well as the yield of first grade, second grade, qualified, and total yield of Asparagus officinalis L.. The results indicated that under these two fertilization modes, reducing fertilization rate did not reduce total yield of Asparagus officinalis L., but improve the yield of high-quality Asparagus officinalis L.. Compared with conventional fertilization, Mode 1 and Mode 2 treatments can effectively increase soil pH value and organic matter content, reduce total exchangeable acids, exchangeable hydrogen, exchangeable aluminium, and exchangeable manganese in soil, increase cation exchange capacity, exchangeable calcium and magnesium content in soil, which was more significant in Mode 2. Therefore, both Mode 1 and Mode 2 fertilization modes can relieve soil acidification and improve soil fertility while ensuring yield of Asparagus officinalis L., with Mode 2 having the better effect. Figures and Tables | References | Related Articles | Metrics

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Effects of different plant growth regulators on fruit setting of Cucurbita maxima D. LIU Jing, HUANG Yu, GUO Xuanhe, DING Lan, HUANG Weizhong, NIU Xiang, XU Xiaojiang 2025, 66 (2):  376-380.  DOI: 10.16178/j.issn.0528-9017.20240859 Abstract ( 31 )   HTML ( 2 )   PDF (13480KB) ( 72 )   In vegetable cultivation, using appropriate plant growth regulators to flower and fruit retention is an important step. Currently, there are many kinds of plant growth regulators available on sale. To better guide farmers in selecting and using plant growth regulators correctly and effectively in production, this study conducted fruit setting experiments on Cucurbita maxima D. using four common plant growth regulators: Xihulu Gaoxiaozuoguowang, Youlisu, Shuirongxingfangluosu, and Nangua zuoguoling. The fruit setting rate, single melon horizontal diameter, single melon vertical diameter, single melon weight, and yield data during the harvesting of tender melons indicated that the Xihulu Gaoxiaozuoguowang had the best effect on flower and fruit retention and yield increase of different varieties of Cucurbita maxima D., which provided an important guidance for farmers in the selection of plant growth regulators in actual production practice. Figures and Tables | References | Related Articles | Metrics

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Effect of hot water soaking on citrus seed growth and grafting HUANG Xiu, KE Fuzhi, NIE Zhenpeng, SUN Lifang, WANG Luoyun 2025, 66 (2):  381-385.  DOI: 10.16178/j.issn.0528-9017.20231119 Abstract ( 25 )   HTML ( 0 )   PDF (4211KB) ( 110 )   In order to improve the grafting survival rate of hybrid offspring in the breeding process of new citrus varieties, and improve the breeding efficiency, the effects of hot water soaking at different temperature and time on the germination and growth of citrus seeds were studied by using single and multiple embryo seeds of citrus as test materials. The results showed that in the range of water temperature of 50-55 ℃, with the increase of temperature, radicle length, radicle growth, stem length and germination rate of single and multiple embryo seeds, showed a trend of first increasing and then decreasing, and reached the highest at 52 ℃, which were 16.02 mm, 20.79 mm, 27.59 mm, 81.36% of single embryo seed and 10.56 mm, 29.61 mm, 42.10 mm and 90.00% of mutiple embryo seed, respectively. From the morphological observation, it can be seen that soaking seeds in hot water at 52 ℃ had a high seed germination rate, fast growth of radicle, and good uniformity. In the time range of 10-30 min soaking in hot water at 52 ℃, with the increase of soaking time, radicle length, radicle growth, stem length and germination rate of citrus seeds increased first and then decreased, reaching the highest at 20 min, which were 12.95 mm, 31.54 mm, 37.89 mm and 81.40%, respectively. In conclusion, the hot water soaking treatment of citrus seeds at 52 ℃ for 20 min can improve the germination uniformity and grafting survival rate of citrus seeds, which is suitable for citrus single and multiple embryo seeds. This study provides a technical reference for the breeding of new citrus varieties, ploidy breeding and citrus seed germination treatment in production. Figures and Tables | References | Related Articles | Metrics

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Study on the quality change of citrus fruit at mature stage in hot and humid area of Yunnan CUN Daize, LI Jing, DONG Jianmei, LAI Xinpu, YANG Di, PAN Li, DU Yuxia 2025, 66 (2):  386-394.  DOI: 10.16178/j.issn.0528-9017.20231061 Abstract ( 27 )   HTML ( 0 )   PDF (1807KB) ( 115 )   To determine the optimal harvesting periods for different citrus varieties in the hot and humid regions of Yunnan, this study focused on the main cultivars in Dehong area. Analysis of changes in soluble solids content, titratable acid content, single fruit weight, and edible rate began at the fruit color-turning stage. The results indicated that the Jinqiu sugar citrus matured and was ready for harvest by August 20th, with stable single fruit weight, longitudinal diameter, transverse diameter, edible rate, and titratable acid content, while soluble solids content increased slowly. Jinqiu sugar citrus had the earliest maturity period and maintained high quality for an extended time. The Bingtang orange matured in late November, with stable single fruit weight, longitudinal diameter, and transverse diameter, thin peel, high edible rate, and a high and stable solid-to-acid ratio. After January 20th, the edible rate and solid-to-acid ratio of Bingtang orange significantly decreased, making the optimal harvesting period from late November to late January. Sugar citrus, Hongjiang orange, and W. Murcott began to mature in early December, with stable single fruit weight, longitudinal diameter, and transverse diameter, high edible rate, and large solid-to-acid ratio. The edible rate of Sugar citrus and W. Murcott decreased significantly after January 20th, harvesting was needed to complete as soon as possible. The peel thickness of Hongjiang orange increased after March 5th, making it unsuitable for further harvesting. Tango and Honeymurcott began to mature in late December, with stable single fruit weight, longitudinal diameter, and transverse diameter, high edible rate, and large solid-to-acid ratio. The solid-to-acid ratio of Tango decreased after February 5th, requiring completion of harvesting by that date. The edible rate of Honeymurcott significantly decreased after March 5th, making it unsuitable for further harvesting. The soluble solids and solid-to-acid ratio of Orah were high by February 5th, indicating the start of the harvesting period, which could be concluded by April 5th when they reached their maximum. Seedless Orah could be harvested in late February when the edible rate was high, and soluble solids and solid-to-acid ratio were large. After March 5th, the peel thickness of Seedless Orah increased, making it unsuitable for further harvesting. This study provides a scientific basis for determining the fruit characteristics and harvesting periods of citrus in Dehong area. Figures and Tables | References | Related Articles | Metrics

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Effects of different cultivation substrate ratios on the growth and development of Phalaenopsis aphrodite H. QU Xiaohui, ZHANG Ningning, LIU Chen, SHAO Heping 2025, 66 (2):  395-400.  DOI: 10.16178/j.issn.0528-9017.20231066 Abstract ( 35 )   HTML ( 1 )   PDF (1341KB) ( 78 )   Using Phalaenopsis aphrodite H. variety Xiaoqingxin as the test material, this study explored the effects of a composite substrate composed of inert materials such as perlite and orchid stone mixed in proportion with bark, coconut shell, and other substrates on the growth and development of Phalaenopsis aphrodite H., in order to screen for a new cultivation substrate ratio that can replace or partially replace water moss. The experimental results showed that the composite substrate of 30% perlite, 55% coconut coir, 15% coconut shell, and water moss (2.5 kg·m-3) had similar cultivation effects with water moss, and could significantly promote the growth and development of Phalaenopsis aphrodite H. The substrate has stable physical and chemical properties, strong regenerability, and greatly reduces economic costs. It can be applied and promoted in the production of Phalaenopsis aphrodite H. Figures and Tables | References | Related Articles | Metrics

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Exploration of the cultivation and application benefits of new lotus varieties YU Youfang, ZHU Kaiyuan 2025, 66 (2):  401-404.  DOI: 10.16178/j.issn.0528-9017.20240444 Abstract ( 34 )   HTML ( 0 )   PDF (2725KB) ( 74 )   In this study, we discussed the status and role of new lotus varieties in water ecological restoration and river and lake landscape enhancement projects, as well as the benefits of new lotus cultivars. New lotus varieties were cultivated and propagated and applied on a large scale. Batch propagation has been successfully achieved, and the stability and production efficiency of the breed have been improved. In summary, our study clarifies that the new lotus species has broad application prospects and development potential in water ecological restoration, river and lake landscape enhancement and other projects. Figures and Tables | References | Related Articles | Metrics

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Present situation and suggestions on pesticide registration of tobacco bacterial diseases in China LI Qingxiang, TIAN Yunong, BI Yiming, MEI Gaofu 2025, 66 (2):  405-410.  DOI: 10.16178/j.issn.0528-9017.20240727 Abstract ( 27 )   HTML ( 0 )   PDF (1112KB) ( 73 )   In order to ensure the safe production of tobacco, the registered pesticides of bacterial diseases such as tobacco bacterial wilt, wildfire and angular leaf spot (as of September 7th, 2024) and related pesticides in research reports were statistically analyzed. The results showed that there were 16, 52 and 3 registered pesticide products for the control of bacterial wilt, wildfire and angular leaf spot, respectively. There were 14, 20 and 2 registered pesticide active ingredients for bacterial wilt, wildfire and angular leaf spot, respectively. There was no registered pesticide to control flag leaf disease and hollow stem disease of tobacco. There were 9 formulations and 3 toxicities in registered pesticide products, among which wettable powder and low toxic pesticides account for the highest proportion. It is necessary to choose and use low-toxic and environmentally-friendly pesticides scientifically and legally, according to the law of incidence in the process of tobacco production. Pesticide enterprises can further accelerate the progress of pesticide registration of bacterial diseases such as tobacco angular leaf spot, flag leaf disease and hollow stem disease, and provide reference for scientific pesticide prevention and control of tobacco bacterial diseases. Figures and Tables | References | Related Articles | Metrics

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Structure and diversity of microbial community in rhizosphere soil of tobacco root rot caused by Fusarium HE Xiaobing, HUANG Kunpeng, LI Junying, BU Yating, ZHAO Lang, WANG Mingxin, ZHANG Fusheng, YIN Guangyu, YANG Nan, XU Yueqi 2025, 66 (2):  411-420.  DOI: 10.16178/j.issn.0528-9017.20230902 Abstract ( 27 )   HTML ( 0 )   PDF (9217KB) ( 66 )   To study the effects of root rot caused by Fusarium on the microbial community structure and diversity of tobacco rhizosphere soil, and to explore the relationship between root rot caused by Fusarium and the occurrence of tobacco diseases, so as to provide theoretical basis for the prevention and control of tobacco diseases, Illumina MiSeq high-throughput sequencing technology was used to compare the rhizosphere soil microbial community structure and diversity between healthy and diseased tobacco plants. The species richness and population diversity of rhizosphere soil fungi were changed by Fusarium root rot. Simpson, ACE and Chaol indexes of rhizosphere soil fungi of diseased tobacco plants were lower than those of healthy tobacco plants. There were significant differences in the dominant species of rhizosphere soil microbial populations between diseased and healthy plants. Compared with the healthy plants, at the phylum level, the relative abundance of Chloroflexi, Planctomycetota and Gemmatimonadota decreased, while the relative abundance of Proteobacteria increased.At the genus level, the relative abundance of beneficial bacteria Streptomyces, Solirubrobacter and Gaiella decreased. The change of fungal community structure and the decrease of species diversity in the rhizosphere soil of tobacco plants are important characteristics of root rot of tobacco caused by Fusarium, and provide a theoretical basis for the early prevention of the disease. Figures and Tables | References | Related Articles | Metrics

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Control effect of commonly used pesticides on Chilo suppressalis Walker and leaf roller borer in early rice CAO Mengjiao, YAO Zhangliang, WANG Yeqing, YE Liping, YING Chao, CHEN Yiping 2025, 66 (2):  421-424.  DOI: 10.16178/j.issn.0528-9017.20231048 Abstract ( 32 )   HTML ( 0 )   PDF (1156KB) ( 106 )   In order to clarify the control effect of commonly used pesticides on Chilo suppressalis Walker and the effect on leaf roller borer in early rice, field pesticide trials were carried out from May to August 2023. The results showed that 667 m2 with 100 mL of 25% quinthion EC, 12 g of 25% ethylspinosasad water-dispersible granules and 30 mL of new agent CS003-S had good control effect on Chilo suppressalis Walker, and the control effect was more than 85%, and the yield recovery loss rate was more than 35%. In 667 m2, 24 mL of 34% ethyl methoxy insect suspension, and 10 mL of 200 g·L-1 tetrazolium anthramide suspension had poor control effect on Chilo suppressalis Walker, and they were not recommended to use alone. The application of these pesticides on early rice would aggravate the occurrence of leaf roller borer in the later stage to varying degrees, and the number of leaf curls after 667 m2 using 100 mL of 25% quinthion EC or 30 mL of the new agent CS003-S were significantly higher than that of control, which may be caused by the influence of pesticides on the number of natural enemies in the field. Therefore, from the perspective of economic and ecological benefits, it is more appropriate to apply 25% ethylspinosasad water-dispersible granules on early rice. Figures and Tables | References | Related Articles | Metrics

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Control effect of cyproflanilide suspension on Chilo suppressalis Walker in indica-japonica hybrid rice CHEN Hong, YE Xuhao, SUN Xiaoyu, FANG Hui, TANG Xuejun 2025, 66 (2):  425-429.  DOI: 10.16178/j.issn.0528-9017.20231077 Abstract ( 26 )   HTML ( 0 )   PDF (1120KB) ( 118 )   In order to compare the control effect of 20% cyproflanilide suspension on the Chilo suppressalis Walker and improve the prevention and control ability in rice, a Chilo suppressalis Walker control effect test was carried out on hybrid rice in 2022.The results showed that the twice application of 15 or 20 mL of 20% cyproflanilide suspension at 667 m2 in the early stage of Chilo suppressalis Walker damage or the initial stage of wilting sheath in hybrid rice could have a control effect of 80.92% and 97.65% on the whole generation of Chilo suppressalis Walker, and its effective period could reach 20-30 days. However, its fast-acting effect on the larvae of Chilo suppressalis Walker was not strong. Therefore, in the control process of Chilo suppressalis Walker, the principle of “preventing as early and young as possible” should be followed, and long-term prevention and control should be carried out twice (interval 10 days) during the peak period of egg incubation. Figures and Tables | References | Related Articles | Metrics

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Evaluation of control effects and crop safety of six herbicides and their combinations against weeds in direct-seeded rice fields YU Yanfang, HU Yang, HE Shijie, XU Hongle, LEI Haixia, WANG Xiaoxiao, LI Huilong, ZHU Junde 2025, 66 (2):  430-436.  DOI: 10.16178/j.issn.0528-9017.20240451 Abstract ( 30 )   HTML ( 0 )   PDF (1167KB) ( 83 )   In order to explore the safe and effective weed control technology for direct-seeded rice, this study compared and evaluated the weed control effect of 6 herbicides such as florpyrauxifen and their combinations on direct-seeded rice field based on field trial method. The results showed that florpyrauxifen 3% EC (60 mL per 667 m2) had good control effects on Echinochloa oryzicola V., Murdannia triquetra (Wall.) Bruckn, Monochoria vaginalis P., Cyperus difformis L. and Cyperus iria L., had medium control effect on Heleocharis plantagineiformis Tang et Wang and slightly poor control effect on Leptochloa chinensis N. when used at the three-leaf stage. Florpyrauxifen 3% EC (80 mL per 667 m2) could cause invisible herbicide damage to rice. Florpyrauxifen 3% EC (40 mL per 667 m2)+cyhalofop-butyl 30% OD (40 mL per 667 m2) had good control effects on all experimental weeds except Heleocharis plantagineiformis Tang et Wang, when the two herbicides were mixed, florpyrauxifen 3% EC should be used at the recommended low dose, otherwise it would cause invisible harm to rice. 2-methyl-4-chlorosodium salt 56% SP combined with bentazone 480 g·L-1 AS (150 mL per 667 m2) or fluroxypyr-meptyl 200 g·L-1 EC (45 mL per 667 m2) had excellent control effects on Monochoria vaginalis P., and also had good control effect on Murdannia triquetra (Wall.) Bruckn, Cyperus difformis L. and Cyperus iria L., and mixed with bentazone could effectively improve the control effect of Heleocharis plantagineiformis Tang et Wang. 2-methyl-4-chlorosodium salt 56% SP 56% SP (125 g per 667 m2) had obvious drug damage to rice, but can gradually return to normal growth after spraying foliar fertilizer, when it was used at the dosage of 80 g per 667 m2, it was safe to rice. Cyhalofop-butyl 30% OD (40 mL per 667 m2) had poor control effect on Echinochloa oryzicola V. and bispyribac-sodium 10% SC (20 mL per 667 m2) had poor control effect on Leptochloa chinensis N. On the whole, we recommended two combination methods, florpyrauxifen 3% EC (40 mL per 667 m2)+cyhalofop-butyl 30% OD (40 mL per 667 m2), 2-methyl-4-chlorosodium salt 56% SP (125 g per 667 m2) bispyribac-sodium 10% SC (20 mL per 667 m2)+cyhalofop-butyl 30% OD (40 mL per 667 m2), which not only have excellent control effect but also were safe to rice. In addition, if the amount of Cyperaceae weed is large, it is recommended to use MCPA-sodium 56% SP (80 g per 667 m2)+bentazone 480 g·L-1 AS (150 mL per 667 m2) cyhalofop-butyl 30% OD (40 mL per 667 m2). Figures and Tables | References | Related Articles | Metrics

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Field control effect of 40% prothioconazole·tebuconazole mixture on rice sheath blight BAI Jianping, XU Weidong, LU Qiang, YAO Zhangliang 2025, 66 (2):  437-439.  DOI: 10.16178/j.issn.0528-9017.20231091 Abstract ( 31 )   HTML ( 0 )   PDF (1086KB) ( 117 )   Sheath blight is the main disease of rice. In order to clarify the control effect of the new agent 40% prothioconazole·tebuconazole suspension on rice sheath blight, Jia 67 and Xiushui 121 were used as test rice varieties, 10% Jinggangmycin A was used as the control agent, field tests were conducted. The results showed that the new agent 40% prothioconazole·tebuconazole suspension mixed with 9% pyraclostrobin microcapsule suspension had a good control effect on rice sheath blight on two rice varieties, and the control effect was consistent in the two rice varieties. There was no pesticide harm in the test of different concentrations. From the perspective of control effect, 50 mL of the new agent 40% prothioconazole·tebuconazole suspension mixed with 50 mL 9% pyraclostrobin microcapsule suspension agent for the prevention and control of rice sheath blight can be popularized and applied locally. Figures and Tables | References | Related Articles | Metrics

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Analysis of endophytic bacterial populations in the midvein of citrus leaves infected with Huanglongbing based on 16S rDNA amplicons ZHANG Liping, LIU Shunmin, PU Zhanxu, ZHU Li, LYU Jia 2025, 66 (2):  440-444.  DOI: 10.16178/j.issn.0528-9017.20240461 Abstract ( 22 )   HTML ( 0 )   PDF (1956KB) ( 113 )   In this paper, the endophytic bacterial populations were analyzed in the midvein of the citrus leaves infected with Candidatus Liberibacter asiaticus which was the agent of citrus Huanglongbing. By conducting 16S rDNA V3-V4 region amplicon sequencing on a total of 24 infected samples (HLB) and 12 control samples (HC) and bioinformatics analysis, and filtering identified 60 annotated microbial OTUs (considered as 60 different microorganisms) were identified. It was found that the HC group had 54 OTUs, while the HLB group only had 38 OTUs. Among these, the HC group had 38 genera annotated at the genus level, while the HLB group had 30 genera. Candidatus Liberibacter was the dominant microrganism with an average percentage of 81.35% in the HLB group, Candidatus Liberibacter was not found in the HC group. Percentages of Candidatus Liberibacter and Roseburia in total were found to differ significantly between HC and HLB groups by t-test analysis. According to Spearman's rank correlation analysis, Candidatus Liberibacter was found to be positively correlated with three genera, Bacteroides, Fusobacterium and Roseburia, and negatively correlated with four genera, Sphingomonas, Amnibacterium, Methylobacterium and Beijerinckiaceae 1174-901-12. Figures and Tables | References | Related Articles | Metrics

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Analysis of economic benefit of specialized monitoring and survey of Solenopsis invicta in Deqing County FEI Jianqin, ZHANG Liewu, HUANG Jun, YANG Fengli, LIU Yueze, LIU Xiaotong, DING Haoyi, SU Hongli, QIAN Cheng 2025, 66 (2):  445-448.  DOI: 10.16178/j.issn.0528-9017.20240863 Abstract ( 22 )   HTML ( 0 )   PDF (1110KB) ( 80 )   The prevention and control of Solenopsis invicta epidemic has always emphasized early detection, early reporting and early control, and entrusting a third-party professional organization to carry out the monitoring and survey of S. invicta is a favorable means to find S. invicta. The present study reviewed the process of specialization monitoring and census of S. invicta in Deqing County, China, from 2021 to 2022. Three outbreaks were found in this investigation. The habitat types were wastelands near the flower and timber trading market, nurseries and green lawns in the community, and the invasion history was all within 2 years. Because the epidemic was detected early, its occurrence area and extent were not large, the later investment cost will be low and the emergency culling effect will be remarkable. If the local diffusion distance analysis method was used to predict S. invicta, and S. invicta was found after 1, 3, and 5 years, its diffusion area and eradication cost would increase significantly. Therefore, we suggest that the economic benefits of early detection of S. invicta through professional monitoring and census are significant, and the monitoring and survey of S. invicta should be normalized in the future, and the publicity of science popularization should be intensified to give full play to the role of the public in discovering and reporting the S. invicta epidemic. Figures and Tables | References | Related Articles | Metrics

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Design and application of intelligent monitoring system for rapid detection of pesticide residues in fruits and vegetables WANG Zhen, LU Wen, LI Xiutong, JIANG Youyuan, YU Zhouhong, SUN Wenshan 2025, 66 (2):  449-456.  DOI: 10.16178/j.issn.0528-9017.20231069 Abstract ( 23 )   HTML ( 0 )   PDF (9387KB) ( 82 )   To establish an intelligent monitoring system for rapid detection of pesticide residues in fruits and vegetables and apply it,the camera, sensor front-end equipment, balance, water bath and quick inspection equipment were connected to the system, using electronic technology, RFID technology, information technology and network technology to achieve the detection personnel seniority verification, laboratory GPS positioning, process reproduction, key link score traceability, environmental monitoring, data transmission, image recognition and other functions, and develop an intelligent monitoring platform for rapid detection of food safety. The system made up for the deficiency of process quality monitoring of traditional food safety rapid detection methods, and could carry out real-time monitoring, timely warning and traceability. It could reduce the human error of experimental data, improve the utilization rate of experimental data, achieve multidimensional analysis and prediction of historical data, timely discover suspicious results, provide a more efficient management system for the development of the testing industry. This intelligent monitoring system provides important technical support for market supervision departments, so as to improve our agricultural products safety inspection online quality control overall level. Figures and Tables | References | Related Articles | Metrics

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Effect of phenolic extracts from Chuzhou chrysanthemum on delaying aging of rice during storage period SHAO Juan, JIANG Ting, WANG Xiaodong, ZHU Xiangdong, ZHANG Tao 2025, 66 (2):  457-462.  DOI: 10.16178/j.issn.0528-9017.20231099 Abstract ( 27 )   HTML ( 0 )   PDF (1174KB) ( 71 )   In order to investigate the effect of phenolic extracts from Chuzhou chrysanthemum on the aging of rice during storage, different proportions of phenolic extracts from Chuzhou chrysanthemum were mixed with rice to carry out storage tests. The rice color, texture, fatty acid content were measured on 0, 40, 80, 120, 160 d during storage. The results showed that compared with the control group, the addition of phenolic extracts from Chuzhou chrysanthemum could keep the color of rice, delay the rice hardness increase, elasticity decrease and chewability decrease during storage, inhibit the increase of rice fatty acid content, and help to maintain the solubility of rice starch and reduce the swelling degree. Phenolic extracts from Chuzhou chrysanthemum have a good alleviating effect on the aging of rice during storage. Figures and Tables | References | Related Articles | Metrics

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Application of constant temperature far-infrared aroma extraction technology in improving flavor quality of tea resources in summer and autumn YAN Haofeng, FANG Linguan, LOU Shulin, HUANG Haitao 2025, 66 (2):  463-466.  DOI: 10.16178/j.issn.0528-9017.20231151 Abstract ( 23 )   HTML ( 0 )   PDF (1070KB) ( 89 )   In order to clarify the effect of constant temperature far-infrared technology on the aroma and taste quality of low-value tea in summer and autumn, the sun-dried white tea and stir-fried green tea produced by machine-harvested fresh leaves in summer and autumn in Yuhang District of Hangzhou City were used as initial samples, and the aroma was extracted by far-infrared technology at different temperatures and radiation distances, and the sensory quality and physicochemical components of the treated samples were evaluated. The results showed that the aroma and taste quality scores of sun-dried white tea increased by 1.0 point, the coarse taste disappeared, the aroma was sweeter and the taste was more mellow when the treatment 1(temperature 80 ℃+radiation distance 12 cm) was adopted. The total sensory quality score of stir-fried green tea was the highest under treatment 3 (temperature 120 ℃+radiation distance 15 cm), which increased by 3.2 points compared with the control. The aroma changed from coarse green to sweet, and the taste changed from coarse taste to mellow. Biochemical component analysis showed that the water extract, tea polyphenols, soluble protein and other contents of tea resources in summer and autumn were reduced, and the soluble sugar content of stir-fried green tea was increased after the constant temperature far-infrared aroma extraction technology, which improved the aroma and taste quality defects of low-value tea resources, and had a better flavor quality improvement effect. Figures and Tables | References | Related Articles | Metrics

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Effects of different drying treatments on the structure and activity of polysaccharides from Biqi bayberry pomace LIU Chenxing, CAO Yan, XIA Qile 2025, 66 (2):  467-470.  DOI: 10.16178/j.issn.0528-9017.20240834 Abstract ( 22 )   HTML ( 1 )   PDF (2507KB) ( 89 )   As a by-product of juice and wine processing, bayberry pomace is rich in various nutrients and bioactive substances. In this study, polysaccharide was extracted from Biqi bayberry pomace by hot air drying and vacuum freeze drying treatments. The components, structural characterization and antioxidant activity of extracted polysaccharide were systematically analyzed. The analysis results of the content of total sugars, sulfate radicals, polyphenols, uronic acids, proteins and other components in polysaccharides showed that different drying treatments had significant differences in the components of extracted polysaccharides, especially in the content of polyphenols and proteins(P<0.05). The analysis results of Fourier transform infrared spectrometer, zetapotential analyzer and laser particle size analyzer indicate that the drying treatments had a certain influence on the structural characterization of polysaccharide. The results of DPPH free radical scavenging ability, ABTS free radical scavenging ability and ferric reducing ability of plasma showed that the polysaccharides extracted by vacuum freeze drying treatment had stronger antioxidant activity (P<0.05). Vacuum freeze drying is more suitable for the drying treatment of bayberry pomace. The results of this research could provide essential reference for the high-quality utilization of bayberry pomace. Figures and Tables | References | Related Articles | Metrics

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Determination of fenpyrazone in maize by high performance liquid chromatography-tandem mass spectrometry SU Chunmin, BIAN Haitao, YONG Yanhua, LI Peng, DONG Ruinan 2025, 66 (2):  471-474.  DOI: 10.16178/j.issn.0528-9017.20231164 Abstract ( 27 )   HTML ( 0 )   PDF (1149KB) ( 68 )   This study established a detection method for fenpyrazone in maize using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). QuEChERS method was optimized for effective extraction and purification of fenpyrazone in samples. The results showed that there was a good linear relationship in the concentration range of 1-100 μg·L-1 for fenpyrazone with correlation coefficient greater than 0.99. The limit of quantitation (LOQ) was 6 μg·kg-1. At three spiked concentration levels of 6, 20 and 100 μg·kg-1 for fenpyrazone, the average recoveries were 89.0%-90.4%, with relative standard deviations (RSDs) of 0.8%-2.5% (n=6). The method is simple, efficient, sensitive, accurate and suitable for determination of fenpyrazone in maize. Figures and Tables | References | Related Articles | Metrics

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Study on the effect of embedded raceway aquaculture for Micropterus salmoides in rice fields ZHOU Dan, ZHANG Jinpeng, LIU Mei, HU Dayan, YUAN Julin, ZHOU Zhijin 2025, 66 (2):  475-482.  DOI: 10.16178/j.issn.0528-9017.20240477 Abstract ( 24 )   HTML ( 0 )   PDF (4058KB) ( 82 )   To analyze the aquaculture effect of embedded raceway aquaculture for Micropterus salmoides in rice fields and evaluate its ecological and economic benefits, two aquaculture models (LK group and XK group) were constructed in this study in Wuxing District, Huzhou City. By monitoring the growth and water quality of Micropterus salmoides during the breeding process, as well as changes in paddy soil before and after cultivation, and evaluating yield and economic benefits, a suitable aquaculture model was constructed. The results showed that the growth rate of Micropterus salmoides in the LK group was slower than that in the XK group, but there was no significant difference in harvest specifications. The total nitrogen, total phosphorus, and COD levels in the water within the LK and XK group raceways were higher than those in the surrounding ditch. After cultivation, the total nitrogen content in the LK group paddy soil decreased from (1.60±0.15)g·kg-1 to (1.12±0.05)g·kg-1, and the total phosphorus content decreased from (0.54±0.05)g·kg-1 to (0.11±0.02)g·kg-1; The total nitrogen content of paddy soil in the XK group decreased from (1.52±0.13)g·kg-1 to (1.05±0.06)g·kg-1, and the total phosphorus content decreased from (0.47±0.03)g·kg-1 to (0.06±0.02)g·kg-1. However, the total amount of humus and fertility both increased. The LK group reduced fertilizer by 37.5%-53.1%, while the XK group reduced fertilizer by 50.1%-62.5%. Both groups did not use pesticides. The profit of the LK group was 5 680.9 yuan per 667 m2, significantly lower than the XK group (7 902.6 yuan per 667 m2). Therefore, Micropterus salmoides rice field embedded raceway aquaculture is a high-quality rice fishing model that integrates economy and ecology. The suitable mode is to release 10 000 to 15 000 Micropterus salmoides species in mid to late April, and sow the late rice variety Yongyou 1540 in early June. The optimal area ratio is at least 6 667.0 m2 of rice paddies on a single raceway. Figures and Tables | References | Related Articles | Metrics

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Effects of rice-crayfish co-cultivation on rice diseases and pests control and rice quality CHEN Jie, CAO Kuirong, WANG Baojun, JIANG Qifan 2025, 66 (2):  483-486.  DOI: 10.16178/j.issn.0528-9017.20231130 Abstract ( 37 )   HTML ( 0 )   PDF (1235KB) ( 96 )   In order to determine the effects of rice-crayfish co-cultivation on rice diseases and pests control and rice quality, the occurrence of major diseases and pests and rice quality were compared between rice-crayfish co-cultivation field and conventional field. The results showed that the rice-crayfish co-cultivation could effectively reduce the occurrence of Sesamia inferens, Chilo suppressalis and sheath blight, and the rice transparency and glue consistency were better than the conventional cropping model, which had good ecological, economic and social benefits. Figures and Tables | References | Related Articles | Metrics

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Study on the effect of electrolytic oxidation technology for treating seawater on the microalgae cultivation LI Tengteng, QIN Nuoyun, XU Jinqi, LI Pengquan, CHEN Chen, FANG Jun 2025, 66 (2):  487-494.  DOI: 10.16178/j.issn.0528-9017.20231163 Abstract ( 24 )   HTML ( 0 )   PDF (1268KB) ( 71 )   To investigate the effect of electrolytic oxidation technology for treating seawater on the growth and reproduction of Isochrysis galbana 8701, Platymonas helgolandica var. tsingtaoensis and Chaetoceros muelleri, three experimental groups were set up, including electrolytic oxidation sand filtration seawater EOW250 (effective chlorine concentration of 250 mg·L-1), electrolytic oxidation sand filtration seawater EOW100 (effective chlorine concentration of 100 mg·L-1), and bleaching powder disinfection sand filtration seawater (effective chlorine concentration of 35 mg·L-1), with boiled sand filtration seawater as the control group. Single species cultivation was carried out on Isochrysis galbana 8701, Platymonas helgolandica var. tsingtaoensis and Chaetoceros muelleri for 10 days. The results showed that electrolytic oxidation technology for treating seawater was suitable for the cultivation of three types of marine microalgae. The group treated with electrolytic oxidation seawater EOW100(effective chlorine concentration of 100 mg·L-1) for Isochrysis galbana 8701 achieved the highest cell density of 437.7×104 cell ·mL-1 on the 10th day of cultivation, and significantly higher than the control group (P<0.05).There was no significant difference in the final cell density of Platymonas helgolandica var. tsingtaoensis among the treatment groups (P>0.05). However, there was a significant difference (P<0.05) in the final bacterial number between the electrolytic oxidation seawater EOW250(effective chlorine concentration of 250 mg·L-1), electrolytic oxidation seawater EOW100(effective chlorine concentration of 100 mg·L-1) groups and the bleaching powder group. There was no significant difference in the the final bacterial number of Chaetoceros muelleri among the treatment groups (P>0.05).In conclusion, electrolytic oxidation seawater EOW250 (effective chlorine concentration of 250 mg·L-1) could be used for the culture of Platymonas helgolandica var. tsingtaoensis, while electrolytic oxidation seawater EOW100(effective chlorine concentration of 100 mg·L-1) was suitable for the cultivation of Isochrysis galbana 8701, Platymonas helgolandica var. tsingtaoensis and Chaetoceros muelleri. The aim of the study is to treat sand filtered seawater with electrolytic oxidation for the cultivation of microalgae and to provide an experimental basis for the application of microalgae in large-scale production. Figures and Tables | References | Related Articles | Metrics

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Impact of agricultural export trade on agricultural carbon emissions GAO Ying, WEI Junying 2025, 66 (2):  495-501.  DOI: 10.16178/j.issn.0528-9017.20231055 Abstract ( 28 )   HTML ( 0 )   PDF (1200KB) ( 69 )   Developing agricultural low-carbon strategy is an important measure to protect agricultural ecology and promote agricultural economy. Based on the panel data of 30 provinces、autonomous regions and municipalities directly under the central government in China from 2007 to 2020, this paper analyzed the influence of China's agricultural export trade on agricultural carbon emissions by using fixed effects and moderating effects. The results showed that agricultural export trade had an inhibitory effect on agricultural carbon emissions in general, and the relationship between the two had the characteristics of stages, which could be divided into two stages, the first stage was the promotion effect, the second stage was the inhibition effect. Further analysis shows that the phased characteristics of agricultural export trade on agricultural carbon emissions are mainly due to the implementation of agricultural low-carbon emission reduction policies, that is, carbon emission reduction policies play a regulating role in the relationship between agricultural export and agricultural carbon emissions. Therefore, in order to achieve the goal of low-carbon emission reduction in agriculture, suggestions were put forward to strengthen the construction of agricultural export trade, strengthen the supervision of agricultural production, rationally adjust the export structure of agricultural products, change the current production mode, strengthen agricultural production efficiency, and explore the market. Figures and Tables | References | Related Articles | Metrics

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Effects of different fertilization treatments on biodiversity of soil macrofauna of sweet potato in newly reclaimed mountain land NIU Tianxin, ZHA Yan, MA Huasheng, XIONG Wei, HUANG Yuqing 2025, 66 (2):  502-506.  DOI: 10.16178/j.issn.0528-9017.20231117 Abstract ( 24 )   HTML ( 0 )   PDF (1109KB) ( 84 )   In the experiment of improving soil fertility in newly reclaimed mountain land, three different organic fertilizers, pig manure, sheep manure, and mushroom residue, were applied in combination with inorganic fertilizers to plant sweet potatoes. The results showed that organic fertilizers significantly increased the number of bacterial and fungal communities in the soil compared with the blank treatment. The increase in soil fertility led to a sharp increase in soil microbial numbers and improved soil acidification caused by the application of inorganic fertilizers. During the growth process of sweet potatoes, the distribution and biodiversity analysis of soil macrofauna were investigated under different fertilization treatments. Eight groups of soil macrofauna were captured in the sweet potato field, among which the Shannon-Wiener diversity index and PieLou evenness index of pig manure commercial organic fertilizer treatment were the highest, increased by 40.91% and 15.66% respectively compared with the blank treatment, and increased by 158.33% and 88.23% compared with the inorganic fertilizer treatment. The blank treatment and inorganic fertilizer treatment had the relatively low number of individuals and groups, and the inorganic fertilizer treatment had the lowest Shannon-Wiener diversity index and PieLou evenness index. Figures and Tables | References | Related Articles | Metrics

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Quality evaluation of supplementary cultivated land and current problem analysis in Zhejiang Province LIAN Zhenghua, CHEN Yiding, KONG Haimin, CHEN Hongjin 2025, 66 (2):  507-510.  DOI: 10.16178/j.issn.0528-9017.20231135 Abstract ( 26 )   HTML ( 0 )   PDF (1095KB) ( 84 )   Requisition-compensation balance of cultivated land is an important measure for the country to strictly adhere to the red line of 0.12 billion hm2 of cultivated land. However, the phenomenon of putting the quantity ahead of quality generally exists. We tested the soil and assessed the quality grade of the supplementary cultivated land projects that had passed the acceptance inspection in five counties (cities, districts) in Zhejiang Province in recent years. The results showed that the overall fertility of the supplementary cultivated land was inferior, the average quality grade of supplementary cultivated land was 7.44, and the average values of soil organic matter, total nitrogen, available phosphorus and available potassium were all at medium to lower level, the soil was weak acidic. Besides, there were some problems such as unreasonable project design, inadequate post-management and so on. Countermeasures were put forward to improve the quality of supplementary cultivated land, such as strengthen the argument of project establishment, increase capital input, establish joint acceptance inspection mechanism, and rapid fertilization. Figures and Tables | References | Related Articles | Metrics

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Research on the coordination of agricultural green production and new urbanization from the perspective of low carbon—taking the Silk Road Economic Belt as an example LIU Lu, KONG Lingcheng 2025, 66 (2):  511-517.  DOI: 10.16178/j.issn.0528-9017.20231106 Abstract ( 20 )   HTML ( 0 )   PDF (1453KB) ( 68 )   It is of great significance to study the coordination relationship between agricultural green production and new urbanization including carbon absorption from the perspective of low carbon to achieve the goal of agricultural green development and urban-rural integration. Based on the super-efficiency SBM model and entropy method, the agricultural green production efficiency and new urbanization level of 17 provinces (autonomous regions, municipalities directly under the central government) along the Silk Road Economic Belt from 2002 to 2021 were calculated, and the coupling coordination model was used to study the coupling and coordination relationship between the two. The results showed that during the sample period, the new urbanization level in the Silk Road Economic Belt showed that the eastern region was better than the western region, and the growth of agricultural green production efficiency depent more on the progress of agricultural technology. The coupling coordination degree of the system increased steadily during the study period, and in recent years, it showed the spatial distribution pattern of southeast>northwest>southwest>northeast. Finally, combined with the grey GM (1,1) model to predict the change trend of the coupled system of the Silk Road Economic Belt in 2022-2032, it is found that the southeast, northeast, southwest and northwest regions will enter the coupled coordination stage in the future, and the regional differences in space will continue to be maintained. Therefore, policy suggestions such as raising the level of new-type urbanization, strengthening agricultural green science and technology innovation, and establishing regional cooperation mechanisms are put forward. Figures and Tables | References | Related Articles | Metrics

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Countermeasures and thoughts on optimizing and improving the new version of “Zhejiang Farmer Mailbox” WANG Bing, REN Luyi, WU Feiyan, GUAN Xiaofeng 2025, 66 (2):  518-521.  DOI: 10.16178/j.issn.0528-9017.20240627 Abstract ( 26 )   HTML ( 5 )   PDF (4056KB) ( 74 )   Since the construction and implementation of “Zhejiang Farmer Mailbox” in 2005, it has effectively promoted the information into villages and households, promoted the production and marketing of agricultural products, improved the ability of disaster prevention and early warning, strengthened the communication between governments at all levels and farmers, and achieved remarkable results in developing modern agriculture and improving agricultural efficiency. Under the background of digitalization, many functions of farmer mailbox are weakened and need to be upgraded iteratively. This paper mainly expounds the ideas of optimizing and improving the function of the new version of “Zhejiang Farmer Mailbox” from the aspects of consolidating the technical base, promoting application integration, optimizing function layout, strengthening SMS empowerment, and smoothing consultation and answering, and provides countermeasures and suggestions for further exploring the construction of unified entrance of information services in the agricultural and rural areas of Zhejiang Province. Figures and Tables | References | Related Articles | Metrics

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Study on the influence and mechanism of digital village construction on farmers' income increase ZHUGE Yan, CHEN Danyin 2025, 66 (2):  522-529.  DOI: 10.16178/j.issn.0528-9017.20240867 Abstract ( 29 )   HTML ( 0 )   PDF (1163KB) ( 75 )   The construction of digital villages has become a crucial means to promote the comprehensive revitalization of rural areas. Based on the national county-level digital village construction database, this article empirically examined the economic and social effects and its internal mechanism of digital village construction from the perspective of increasing farmers' income. The research findings are as follows: during the research observation period, the construction of digital villages significantly promoted farmers' income and simultaneously narrowed the income gap between urban and rural residents within the county area. This conclusion was still valid when endogeneity was taken into account. Digital infrastructure, the digitalization of rural economy, the digitalization of rural governance, and the digitalization of rural life, as the key dimensions of digital village construction, have all significantly increased the income level of farmers. However, there are significant differences in the income-increasing effects of digital village construction in counties with different income levels. The construction of digital villages fails to exert a significant income-increasing effect in low-income counties, which may widen the inter-county income gap among farmers. The mechanism analysis reveals that the development of rural industries and the increase in financial investment are two important paths through which the construction of digital villages promotes the increase in farmers' income. Figures and Tables | References | Related Articles | Metrics

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Current situation and development suggestions of rice industry in Wuxing District MENG Huabing, ZHANG Qiyan, ZHOU Jinting, SUN Li, QIN Yebo 2025, 66 (2):  530-535.  DOI: 10.16178/j.issn.0528-9017.20240837 Abstract ( 22 )   HTML ( 1 )   PDF (1105KB) ( 121 )   Wuxing District belongs to the Hangjiahu Plain and is an important rice production base. Ensuring the high-quality development of the rice industry plays an important role in promoting social and economic development. In this paper, the rice production level in Wuxing District in recent years was analyzed from the perspective of yield per unit area and different relevant measures to promote the development of rice industry were also recorded. The problems and shortcomings of rice industry development in Wuxing District were pointed out from the perspectives of infrastructure, agricultural machinery application, age of large grain producers and production cost and benefit. The guiding suggestions for the development of rice industry in the next step were put forward from the aspects of infrastructure improvement, three new technologies promotion, new agricultural management system construction and accelerating the promotion of machine transplanting etc., which has a certain guiding role for the high-quality development of rice industry in this region. Figures and Tables | References | Related Articles | Metrics

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Research on the path and strategy of high quality development of loquat in Qiandao Lake JIANG Xuefang, LI Xiaoying, BAO Xufei, FANG Haojin, WANG Mogen 2025, 66 (2):  536-540.  DOI: 10.16178/j.issn.0528-9017.20231083 Abstract ( 19 )   HTML ( 0 )   PDF (1159KB) ( 82 )   Loquat is one of the main fruits in Chun'an County. In order to identify the crux of the loquat industry in the area and promote high-quality development of the industry, this article elaborated on the current development status of the loquat industry in Qiandao Lake, analyzed the existing problems in the loquat industry, and proposed a series of development strategies such as optimizing variety structure, strengthening technical research and development, cultivating new business entities, enhancing industrial foundation, promoting industrial integration and development, establishing the Qiandao Lake loquat brand, and improving development support policies. Figures and Tables | References | Related Articles | Metrics