Prevention and control techniques for non-point source pollution caused by accumulated rainfall and nitrogen conservation in grape producing areas on the Northwest Loess Plateau
The scarcity of surface water resources on the Northwest Loess Plateau is constraining the high-quality and sustainable development of the grape industry.The excessive use of nitrogen fertilizer poses a risk of agricultural non-point source pollution.To explore the contradiction between water scarcity,non-point source pollution,and high-quality and sustainable development of the grape industry in the Northwest Loess Plateau,this paper analyzed the current situation of rainfall and fertilization in grape producing areas of the Northwest Loess Plateau.Based on nitrogen deposition data in the production areas,it is proposed to implement prevention and control techniques for non-point source pollution caused by accumulated rainfall and nitrogen conservation in grape producing areas of the Northwest Loess Plateau.Through analysis of relevant data over the past three years,it is known that the technology can save 73430 m3 of water cumulatively in three years,accumulated reduction of 130.5～1434.6kg of urea significantly reduces non-point source pollution caused by excessive nitrogen fertilizer application and reduces vineyard production costs.This technology has significant effects in water and nitrogen conservation,as well as agricultural non-point source pollution prevention and control.It can be promoted and applied throughout the Northwest Loess Plateau region.
grape producing areas on the Northwest Loess Plateauaccumulated rainfall and nitrogen conservationnon-point source pollutionprevention and control techniques
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