Comprehensive evaluation of soil erosion durability of bio-banks on slope lands in purple hilly areas Effects of tillage conversion on carbon sequestration capability of farmland soil doubled cropped with wheat and corn. Fuzzy mathematical analysis of conservation tillage effect on yield based on Farmer Cognition Effects of different tillage and fertilization modes on the soil physical and chemical properties and crop yield under winter wheat/spring corn rotation on dryland of east Gansu, Northwest China.