氮流失形成的面源污染及防控措施研究

摘要

The utilization quantity of nitrogen fertilizer is the largest among nutrition elements in agricultural production. Nitrogen loss of the circle track was the main cause of non-point source pollution. The input and output of nitrogen in agricultural ecological cycle ,reasons and ways of non-point source pollution formed by nitrogen losses were discussed. Some control measures were put forward, so as to reduce nitrogen loss in agricultural ecosystem.%氮素是化肥中使用量最大的营养元素,其循环过程产生的氮损失是形成面源污染的主要原因。论述了农业生态系统氮循环过程中氮的输入与输出,氮流失造成面源污染的原因及途径,提出具体的防控措施,以期减少农业生态系统中的氮流失。