Effects of Different Fertilization Methods on Double-Rice Yield and Bacterial Community in Paddy Soil

Fertilizer regimes have profound effects on crop yield, soil fertility, and microbial community structure. However, the impacts of partially substituting mineral nitrogen (N) with organic N and/or controlled-release combining micronutrient fertilizers properties communities are still unclear in double-rice systems. The objective this study was to compare rice nutrient condition, bacterial alpha beta diversity paddy that had been subjected four fertilizer treatments from 2012 2016. were FP: farmers’ practice 100% urea N; T1: 64% + 16% manure T2: T1 fertilizers; T3: 40% 24% fertilizers. results showed there no considerable differences between yields under treatments, meaning reducing by 20% did not decrease yield. Soil matter, total N, pH, biomass receiving increase significantly compared FP. Bacterial diversities alter treatments. Only two (Verrucomicrobia Aminicenantes) out eleven dominant phyla considerably varied These indicate reduction partial substitution can maintain yield limited