秸秆还田对土壤有机碳积累影响的研究进展

Research Progress on the Effect of Straw Returning on Soil Organic Carbon Accumulation

秸秆还田能有效地改变土壤结构,增加土壤团聚体的稳定性。秸秆还田作为土壤碳库的主要输入来源,对土壤的物理、化学性质具有决定性作用,降低土壤密度增加孔隙度,并为作物提供适宜的生活条件。土壤有机碳是通过微生物作用而形成的,是衡量土壤肥力的重要指标之一。秸秆还田通过分解腐解作用增加土壤有机碳的含量,为土壤微生物提供有利的生活条件。文章主要从秸秆不同还田方式、不同作物秸秆还田、不同还田量3个方面对土壤有机碳积累的影响进行综述,为探索秸秆还田对土壤有机碳积累效益最大化提供理论依据。

Straw returning can effectively change soil structure and increase the stability of soil aggregates.As the main input source of soil carbon pool,straw returning plays a decisive role in soil physical and chemical properties,reducing soil density,increasing porosity,and providing suitable living conditions for crops.Soil organic carbon is formed through the action of microorganisms,which is one of the important indicators to measure soil fertility.Straw returning can increase the content of soil organic carbon through decomposition and decomposition,and provide favorable living conditions for soil microorganisms.This paper summarizes the effects of straw returning on soil organic carbon accumulation from three aspects:different straw returning methods,different crop straw returning and different returning amount,so as to provide a theoretical basis for exploring the maximization of the benefits of straw returning on soil organic carbon accumulation.