土壤2025，Vol.57Issue(2)：275-281,7.DOI:10.13758/j.cnki.tr.2025.02.004
土壤剖面养分特征与小麦产量对生物质炭施用的响应
Responses of Soil Profile Nutrient Characteristics and Wheat Yield to Biochar Application
摘要
Abstract
In this study,a pot experiment was conducted to investigate the effects of biochar(BC)added at 0.5%and 1.5%on soil profile nutrient characteristics,wheat yield and nitrogen use efficiency(NUE)under conventional N input rate(200 kg/hm2).The results showed that 0-40 cm soil organic carbon(SOC)content increased after BC application and was positively correlated with BC application rate,of which,0-10 cm and 20-30 cm SOC contents under BC-amended treatment significantly increased by 21.1%-44.2%and 12.6%-18.4%,respectively.Compared with N fertilizer alone treatment,BC-amended treatments increased the contents of NH4+-N(3.7%-49.0%),NO3--N(20.1%-23.7%),total N(3.4%-16.7%),and available K(3.6%-14.8%)in 0-10 cm soil.In addition,30-40 cm soil available K contents were significantly increased with BC application by 10.2%-19.7%.Generally,nutrient content increases were higher under 1.5%BC amending treatment,except for NH4+-N.However,BC addition reduced the NH4+-N in 30-40 cm soil by 27.4%-32.8%and available K in 20-30 cm soil by 10.8%-12.6%,and the effects were more significant at lower BC added(0.5%)treatment.BC had no significant effect on either wheat NUE or yield,but performed a reducing potential(risk)on wheat yield.In conclusion,the responses of soil nutrients to BC addition significantly varied with BC application rate and soil profile depth.关键词
生物质炭/氮素利用率/有机碳/土壤肥力/作物产量Key words
Biochar/Nitrogen use efficiency(NUE)/Soil organic carbon/Soil fertility/Crop yield分类
园艺学与植物营养学引用本文复制引用
刘佳乐,陈梓蕊,吴思,孙海军..土壤剖面养分特征与小麦产量对生物质炭施用的响应[J].土壤,2025,57(2):275-281,7.基金项目
国家自然科学基金面上项目(31972518)和江苏省现代农业-碳达峰碳中和科技创新专项(BE2022305)资助. （31972518）
