Effects of straw return depth on soil organic carbon,nitrogen content,and soil enzyme activity of spring maize field Zhengyu Wang1,Xiyu Liu1,Xiangwei Gong1,Ying Jiang1,Hua Qi1

[Objective]In order to evaluate the effect of straw return depth on soil physicochemical properties,enzyme activity,and explore the relationship between them under different straw return depths.[Method]A field micro-plots experiment was conducted for 3-year(2016-2018)in northeast China,and totally six treatments were set as following,straw incorporation with rotary tillage for 10 cm(S1D1),20 cm(S1D2)and 30 cm(S1D3)of soil depth,and straw removal with rotary …查看全部>>