Deep banding of controlled-release potassium sulfate improves soybean productivity by regulating soil microbial communities, enhancing soil enzyme activity and plant growth characteristics
Although both controlled-release potassium sulfate application and deep banding fertilization can improve crop yields, there is limited information on the effect of their coupling on soybean production. In the present study, two-year (2023-2024) field plot experiments were conducted to investigate soybean productivity, soil microbial community, soil enzyme activities, and plant growth characteristics in the different K fertilizer types and fertilization methods, which included potassium sulfate (PS) and controlled-release potassium sulfate (CPS) at two fertilization methods (broadcasting fertilization and deep banding fertilization).