从水环境角度探析农田氮素流失及控制对策

摘要/Abstract

摘要： 综述了国内外关于农田氮素流失对水体影响现状、农田氮素流失途径、流失机理及其控制方法等的研究进展及其控制对策.在控制氮素流失对水环境影响方面,针对氮素地表径流流失和淋溶流失采取有效措施,减少氮素对地表水和地下水污染.氮素污染的治理关键是切断氮源和流失途径的联系,应根据氮污染源的等级划分因地制宜地采取治理措施,制定适合我国国情的BMPs(最佳管理措施)管理模式.

关键词: 氮素流失, 污染, 径流, 淋溶, 控制策略

Abstract: Nitrogen is a major factor in maintaining crop yield and getting better economic return,but its over and unreasonable use may cause severe environmental pollution.From the view of water environment,this paper discussed the current effects of farmland nitrogen (N) loss on water pollution,the passes and mechanisms of farmland nitrogen loss,and its control strategies.To reduce the N surface runoff and leaching,effective measures should be taken,which include cutting down the paths from the source to transportation,and taking integrated measures to control N pollution.The BMPs (Best Management Practices) methods for N control suitable to China's situation were discussed on the basis of nitrogen source pollution rate.

Key words: Nitrogen loss, Leaching, Pollution, Runoff, BMP practices

中图分类号:

S143.1
X52

金洁, 杨京平. 从水环境角度探析农田氮素流失及控制对策[J]. 应用生态学报, 2005, 16(3): 579-582.

JIN Jie, YANG Jingping . Farmland nitrogen loss and its control strategies from the view of water environment[J]. Chinese Journal of Applied Ecology, 2005, 16(3): 579-582.

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