土壤2025，Vol.57Issue(5)：962-970,9.DOI:10.13758/j.cnki.tr.2025.05.002
长期秸秆替代部分化学氮肥对水稻产量和土壤磷组分的影响
Effect of Long-term Straw Substituted for Partial Chemical Nitrogen Fertilizer on Rice Yield and Soil Phosphorus Components
摘要
Abstract
This study relied on a long-term positioning experiment to investigate the effects of long-term straw replacement of partial chemical nitrogen fertilizers on rice yield and soil phosphorus accumulation as well as the relationship between soil chemical properties and phosphorus components.The results showed that compared with chemical fertilizers alone,straw replacement of nitrogen fertilizers for 1/3 and 2/3 enhanced rice yield by increasing the fruiting rate,the number of solid grains per spike and the number of effective spikes of rice,and the total aboveground biomass of rice increased significantly by 17.8%and 17.9%,respectively.Meanwhile,straw replacement significantly increased the contents of soil total nitrogen,alkali-hydrolyzable nitrogen,available potassium and organic matter at different growth periods of rice,while reduced total phosphorus content by 14.3%-35.2%and 21.1%-37.65%,and available phosphorus content by 24.5%-46.5%and 42.6%-60.1%under straw replacement of nitrogen fertilizers for 1/3 and 2/3,respectively.In terms of soil phosphorus components,straw replacement mainly affected inorganic phosphorus components,and compared with chemical fertilizers alone,aluminum phosphorus(Al-P)content decreased by 17.6%-52.4%and 35.1%-57.8%,iron phosphorus(Fe-P)content decreased by 14.1%-26.7%and 29.8%-42.5%,and calcium phosphorus(Ca-P)content decreased by 21.2%-55.2%and 46.5%-66.5%under straw replacement of nitrogen fertilizers for 1/3 and 2/3,respectively.Except soil total potassium and pH,the other soil chemical properties were significantly correlated with Al-P,Fe-P and Ca-P,which indicates straw replacement of nitrogen fertilizer regulates the transformation between different phosphorus forms by affecting soil chemical properties.关键词
秸秆替代氮肥/水稻/产量/土壤化学性质/磷组分Key words
Straw substituted for nitrogen fertilizer/Rice/Yield/Soil chemical properties/Phosphorus fraction分类
农业科技引用本文复制引用
肖入升,蒋国亮,韩永亮,荣湘民..长期秸秆替代部分化学氮肥对水稻产量和土壤磷组分的影响[J].土壤,2025,57(5):962-970,9.基金项目
国家自然科学基金联合基金项目(U19A2050)资助. （U19A2050）
