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随着点源污染的控制水平的提高,非点源污染的研究成为全球环境问题能否得到有效解决的关键,而农业非点源污染是其中覆盖面最广、最隐蔽、最难治理的污染。南水北调工程的成败在水质,农业非点源污染是南水北调中线水源的最主要污染之一。文章介绍了南水北调中线农业非点源污染来源及其特征,分析由农业非点源污染造成水环境恶化的原因与污染途径,提出了南水北调中线农业非点源污染的控制措施。
With the improvement of the control of point source pollution, the research on non-point source pollution becomes the key to solve the global environmental problems effectively. However, agricultural non-point source pollution is the most extensive, the most hidden and the most difficult to control pollution. The success or failure of the South-to-North Water Diversion Project is one of the major pollution sources of water in the mid-line of the South-to-North Water Diversion Project. This paper introduces the origin and characteristics of agricultural non-point source pollution in the middle route of South-to-North Water Diversion Project, analyzes the causes and pollution routes of water environment deterioration caused by agricultural non-point source pollution, and puts forward the control measures of agricultural non-point source pollution in the middle route of South-to-North Water Diversion Project.