Research Progress on the Nitrogen Control Effect of Alfalfa in Agricultural Runoff Mediated by Soil Microorganisms

This paper systematically reviews the research on the nitrogen control effect of alfalfa in agricultural runoff mediated by soil microorganisms. It deeply analyzes the interaction between alfalfa and soil microorganisms, elaborates on the mediating mechanism of microorganisms, comprehensively summarizes the related research achievements, objectively analyzes the existing problems, and prospects for future research directions. The aim is to provide a comprehensive and in-depth theoretical basis for the control of agricultural non-point source pollution and to promote the optimization and sustainable development of nitrogen management in agricultural ecosystems.