Soil bacterial community in multiple cropping system increased grain yield within 40 cultivation years

The purpose of this study was to clarify the differences in soil properties and crop yields in multiple cropping farmland under different cultivation years, and to evaluate the relationship between the changes of bacterial community diversity and composition and soil properties. We hypothesize that the differences in soil physicochemical properties and bacterial community in multiple cropping farmland with different cultivation years caused the changes in crop yields. Our research attempts to explain the change of crop yield from the perspective of bacterial interaction and community stability, which will help to understand the importance of the interaction between soil-crop-microbial in farmland ecosystem.