中国农业科学2025，Vol.58Issue(8)：1591-1603,13.DOI:10.3864/j.issn.0578-1752.2025.08.010
秸秆与紫云英覆盖对土壤肥力及甘薯产量的影响
Effects of Straw and Milk Vetch Mulching on Soil Fertility and Sweet Potato Yield
摘要
Abstract
[Objective]This study aimed to explore the effects of straw and green manure mulching on soil fertility and crop yield on the dryland in southwest China,so as to provide the theoretical basis and practical guidance for exploring reasonable,efficient and ecologically healthy conservation tillage measures in southwest China.[Method]The sweet potato field in the"broad bean/maize/sweet potato"dry three-crop intercropping mode in southwest China was selected as the research object,and four treatments were set up:no mulching(CK),straw mulching(S),straw and milk vetch mulching(S+M),and milk vetch mulching(M).The effects of different treatments on soil characteristics and soil fertility,sweet potato dry matter content in the sweet potato field were studied.[Result](1)Compared with no-mulching treatment,straw and milk vetch mulching could improve the physical and chemical properties and biological characteristics of soil in sweet potato field.Among them,straw and milk vetch mulching had the best effect.(2)The comprehensive evaluation of soil fertility based on principal component analysis showed that soil fertility under straw and milk vetch mulching treatment was higher than that under no mulching treatment,and the comprehensive scores of straw and milk vetch mulching treatment were the highest in both rhizosphere and non-rhizosphere soil.(3)S+M treatment significantly improved the dry matter quality of various organs of sweet potato and sweet potato yield,the yield of sweet potato under S+M,S and M treatment was 34.53%,14.60%and 11.55%higher than that under CK treatment,respectively.[Conclusion]Straw and milk vetch mulching in the dryland,triple cropping systems of southwest China,could effectively improve the physical and chemical properties and biological characteristics of soil,enhance soil fertility,and improve dry matter quality and yield.关键词
秸秆覆盖/紫云英覆盖/土壤肥力/甘薯(Ipomoea batatas L.)/产量Key words
straw mulching/milk vetch mulching/soil fertility/sweet potato(Ipomoea batatas L.)/yield引用本文复制引用
李绍兴,宋稳锋,魏泽煜,周玉玲,宋李霞,任可,马群,王龙昌..秸秆与紫云英覆盖对土壤肥力及甘薯产量的影响[J].中国农业科学,2025,58(8):1591-1603,13.基金项目
国家自然科学基金(31871583) （31871583）
