基于东北黑土地的秸秆还田对土壤固碳能力影响研究

A Study of the Effect of Straw Returning on Soil Carbon Sequestration Capacity Based on Northeast China's Black Land

耕地是农业生产的重要要素,既是碳排放的重要主体,也是固碳的重要单元,秸秆还田能够促进耕地土壤固碳效应的提升,成为农业碳中和的主要手段。文章以东北黑土地为研究对象,研究三种不同秸秆还田方式对土壤固碳能力及作物生长发育的影响机理。研究结果表明:三种不同秸秆还田方式对小麦和玉米的出苗和生长均产生影响;双季全还田方式能够降低耕地土壤容重,固碳能力效果最为显著;采用双季还田方式,小麦和玉米的亩产量增产较为明显。此研究结果为实现土壤固碳降碳及提升作物生长能力提供参考依据。

As an important element of agricultural production,cultivated land is not only an important part for carbon emissions,but also an important part for carbon sequestration.Straw returning to field can enhance the effect of cultivated soil carbon sequestration and become the main means of agricultural carbon neutrality.This paper takes black soil in Northeast China as the research object,and studies the effects of three different straw returning methods on soil carbon sequestration capacity and crop growth and development.The research results show that three different straw return to field methods all have an impact on the emergence and growth of wheat and corn;the double-season full return to field method can reduce the soil bulk density of the cultivated land with the the most significant effect of carbon sequestration.With the double-season return to the field,the yield per mu of wheat and corn has increased significantly.The results of this study provide a reference basis for the realization of soil carbon sequestration and carbon reduction and the improvement of crop growth capacity.