Discussion on the rapid fertilization technology for the restoration of non-grain cultivated land

doi:10.16178/j.issn.0528-9017.20230961

Abstract

Abstract:

Long-term non-grain utilization leads to soil compaction, soil organic matter content reduction, acidification, salinization, nutrient imbalance and heavy metal pollution and other soil quality degradation, especially the soil layer stripping of seedling base, resulting in thinning or even disappearance of the soil layer, which has a greater impact on soil fertility. In this experiment, the effects of different biomass carbon application rates and combined with commercial organic fertilizer on rice yield and soil fertility were analyzed, so as to obtain a better rapid fertilizer technology model for non-grain cultivated land. The results showed that compared with CK, all treatments increased the contents of alkali-hydrolyzed nitrogen, available potassium and organic matter in rice soil, and the application of biochar combined with 12 t·hm^-2 commercial organic fertilizer had a more significant effect on the improvement. It shows that biochar plays a certain role in stabilizing soil pH value and nutrient retention, and plays a positive role in improving rice yield.

Key words: biochar, rice, yield, nutrient uptake, soil fertility

CLC Number:

S158.5

JIANG Shenyue, XUE Zhaokun, JIANG Huaqin, MENG Qingjiu, SHAO Sainan, DIAO Zhihan, YU Keru, YE Zhengqian, JIANG Yugen. Discussion on the rapid fertilization technology for the restoration of non-grain cultivated land[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(1): 218-223.

Figures/Tables 8

Table 1 Experimental treatments 施肥量:t·hm-2

处理编号	生物质炭	商品有机肥
1(CK)	0	0
2	75	0
3	75	12
4	150	0
5	150	12

Fig.1 Effects of different treatments on soil pH value

Fig.2 Effects of different treatments on soil organic matter content

Fig.3 Effects of different treatments on soil alkali-hydrolyzable nitrogen content

Fig.4 Effects of different treatments on soil available potassium content

Fig.5 Effects of different treatments on soil available phosphorus content

Fig.6 Effects of different treatments on rice yield

Table 2 Correlation coefficient between soil fertility and rice grain yield

指标	pH值	碱解氮	速效钾	有效磷	有机质	产量
pH值		0.217	0.329	0.292	0.098	0.431
碱解氮	0.217		0.675^**	0.256	0.458^*	0.521^*
速效钾	0.329	0.675^**		0.622^**	0.657^**	0.687^**
有效磷	0.292	0.256	0.622^**		0.475^*	0.573^**
有机质	0.098	0.458^*	0.657^**	0.475^*		0.784^**
产量	0.431	0.521^*	0.687^**	0.573^**	0.784^**

References 10

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