摘要
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。
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.
出处
《现代农业科技》
2012年第9期293-296,共4页
Modern Agricultural Science and Technology
关键词
氮流失
氮循环
面源污染
控制措施
nitrogen loss
nitrogen cycle
non-point source pollution
control measures
