Critical processes and major factors that drive nitrogen transport from farmland to surface water bodies

farmland to ditches and the transformation processes of nitrogen during migration in ditches/rivers. Nitrogen transport from farmland to ditches is one of the prerequisites and critical processes for farmland nitrogen transport to surface water bodies. The transformation of nitrogen forms in ditches/rivers is historical surpluses. Ditches/rivers have a strong retention capacity for entering surface water bodies. The factors affecting nitrogen transformation in