关键词: 淋失, 淋失, 硝态氮, 铵态氮, 淋失系数, 蔬菜产量

Abstract: In a long period of grain supply and demand balance, under the situation of food security at risk, based on the resource utilization, improve the international competitiveness of grain and the perfect voice and food source path analyzed the agricultural go out influence on food security, from the planning overall layout, completes the area selection, create a good environment and cultivate multinational food dealer puts forward four aspects, such as improving the capacity of agricultural go out to ensure food security countermeasures and Suggestions.