| Soil organic carbon(SOC) loss often takes place in conventional-tillage,but the adoption of conversation tillage may reduce SOC loss,increase the content of surface soil organic matter.It is important to study the effect of cover crop on carbon sequestration potential in cropland.This paper summarized the internal and external researches on the cover crop effect on SOC.The result indicated that cover crop rotation may enhance SOC,soil microbial biomass C,the activity of soil microbe,and increase the main crop yield. |