Advance in Simulation of Nitrogen Migration and Transformation in Soil Water of Crop Root-Zone

Abstract:

Nitrogen， as a critical nutrient for crop growth， has raised sustainability concerns in agricultural systems due to soil-groundwater pollution caused by excessive application. This review begins with an elaboration of nitrogen transport-transformation processes in crop root zone soil-water systems， followed by a systematic analysis of numerical simulation theories governing its subsurface migration. Particular emphasis is placed on critical evaluation of advancements and persistent limitations in current modeling approaches. Building on the current research landscape， three pivotal development trajectories are explored， including quantitative characterization of multi-process interaction mechanisms， accurate acquisition of data and information， and systematic integration of advanced modeling methodologies. Finally， future research directions are proposed for nitrogen migration-transformation simulation in crop root zone soil-water systems.