Analysis of effects of cropping patterns on water-sand-nitrogen-phosphorus loss characteristics in farmland
In the process of crop production,farmland soil erosion and nitrogen and phosphorus loss caused by factors such as rainfall and irrigation will lead to the degradation of land productivity and threaten food pro-duction.Therefore,it is necessary to analyze the factors affecting farmland soil erosion and nitrogen and phos-phorus loss.Different planting patterns have different effects on soil and water conservation.This study focuses on three planting patterns:dry farming,wet farming,and wet-dry rotation.It studies the runoff and sediment production and runoff nitrogen and phosphorus loss under natural rainfall conditions,and clarifies the loss characteristics,which can provide a reference for farmland soil and water conservation and food production se-curity.
Soil erosionCropping patternsNitrogen and phosphorus losses
万方数据
维普
