秸秆还田对土壤碳氮组分及微生物群落的影响综述OA

Straw returning to the field,as an important way of agricultural waste resource utilization,plays a significant role in improving soil quality and promoting sustainable agricultural development.This article explores the differences between direct and indirect straw returning methods and their impacts on soil environment.It systematically reviews the mechanisms by which straw returning affects soil organic carbon storage,nitrogen transformation,and soil microbial communities.The factors affecting soil carbon and nitrogen cycling under straw returning are analyzed,and future research directions are dis-cussed from three aspects:the impact of straw returning on soil carbon cycling,nitrogen cycling,and microbial driven car-bon and nitrogen cycling.The aim is to provide theoretical references for the efficient utilization and technical research of straw returning.