Effect of organic fertilizer instead of partial chemical fertilizer on rice yield and soil physicochemical properties

doi:10.16178/j.issn.0528-9017.20231214

Abstract

Abstract:

In order to investigate the effect of organic fertilizer partially instead of chemical fertilizer on rice production and soil fertility level,and to promote the reduction of chemical fertilizer application and its efficiency in rice production. In this study, no fertilization (CK₁) and conventional fertilization (CK₂) were used as controls and two experimental treatments, namely organic combined application instead of 15% (T₁) and 30% (T₂) chemical nitrogen fertilizer were set up, relevant experiment was conducted on rice during the summer and autumn season of 2023 in field. Yield and quality of early and late rice, soil physicochemical properties, mineral elements and other nutrient levels were different. The yield and quality of rice, soil physicochemical properties, and mineral elements levels were investigated. Compared with CK₂, the yield of early season and late season rice under T₁ and T₂ treatments increased by 5.03%-10.13% and 6.17%-12.96%, respectively. No significant change trend was found in rice processing and appearance quality indexes between treatments with conventional fertilization. The soil pH value, alkali-hydrolyzed nitrogen, available phosphorus and available potassium in T₁ and T₂ treatments were significantly increased, and the available contents of mineral elements manganese, zinc and copper increased in different degrees. In addition, agronomic utilization and partial productivity of nitrogen fertilizer of T₁ and T₂ were higher than those of conventional fertilizer control (CK₂), and they were descending with the increase of substitution ratio. In this study, organic fertilizer partially instead of chemical fertilizer is beneficial to rice high yield and nutrient utilization, and the replacement of 15% nitrogen fertilizer is a better method of fertilizer reduction and efficiency improvement for local rice production.

Key words: rice, organic fertilizer, chemical fertilizer, yield, soil physicochemical properties

CLC Number:

S511.5

XU Youxiang, ZHU Zhenling, WANG Yufei, TONG Lu, ZHOU Lingxiao, ZHANG Yan, SHAO Guosheng, YIN Xianyuan. Effect of organic fertilizer instead of partial chemical fertilizer on rice yield and soil physicochemical properties[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(4): 817-822.

Figures/Tables 7

References 30

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处理	处理方法	有机肥	复合肥	尿素	钙镁磷	氯化钾
CK₁	不施肥	0	0	0	0	0
CK₂	常规施肥	0	750	0	0	0
T₁	有机肥替代15%化学氮肥	696.6	0	277.2	445.05	137.70
T₂	有机肥替代30%化学氮肥	1 393.2	0	228.3	391.20	125.55

处理	处理方法	有机肥	复合肥	尿素	钙镁磷	氯化钾
CK₁	不施肥	0	0	0	0	0
CK₂	常规施肥	0	750	0	0	0
T₁	有机肥替代15%化学氮肥	696.6	0	277.2	445.05	137.70
T₂	有机肥替代30%化学氮肥	1 393.2	0	228.3	391.20	125.55

处理	早稻		晚稻
处理	667 m²产量/kg	比CK₂/%	667 m²产量/kg	比CK₂/%
CK₁	252.63±10.61 c	-39.03	303.49±11.79 d	-43.83
CK₂	414.37±36.55 b	0	540.27±14.15 c	0
T₁	456.34±12.74 a	10.13	610.31±4.72 a	12.96
T₂	435.22±7.64 ab	5.03	573.62±4.72 b	6.17

处理	早稻		晚稻
处理	667 m²产量/kg	比CK₂/%	667 m²产量/kg	比CK₂/%
CK₁	252.63±10.61 c	-39.03	303.49±11.79 d	-43.83
CK₂	414.37±36.55 b	0	540.27±14.15 c	0
T₁	456.34±12.74 a	10.13	610.31±4.72 a	12.96
T₂	435.22±7.64 ab	5.03	573.62±4.72 b	6.17

处理	早稻				晚稻
处理	糙米率/%	精米率/%	整精米率/%	垩白粒率/%	糙米率/%	精米率/%	整精米率/%	垩白粒率/%
CK₁	77.87 a	65.97 a	33.70 a	81.67 a	80.53 b	71.17 a	60.23 a	24.00 a
CK₂	78.20 a	64.93 a	36.03 a	82.00 a	81.73 a	71.73 a	54.60 a	17.33 a
T₁	78.33 a	65.13 a	34.93 a	85.33 a	81.73 a	71.57 a	59.17 a	21.00 a
T₂	78.10 a	65.37 a	35.20 a	82.00 a	81.33 a	71.60 a	60.57 a	23.00 a