浅析我国南方农业面源污染现状与治理对策

Analysis of Agricultural Non-point Source Pollution in South China and Countermeasures

以位于洞庭湖西部沅江支流流域的南方某乡镇面源污染治理情况为研究对象,本文在项目区推行“猪沼稻(菜、果、茶)”生态种养模式,通过农田面源污染治理、畜禽养殖污染治理、居民生活污水治理、地表径流污水的再利用、水产养殖污染减排及治污湿地植物饲料化六种方式开展面源污染治理,推广应用污水高效生态治理技术,摸索建立农业面源污染的经济高效治理模式,以期为农业面源污染防治提供有益的实践经验和示范效应。

Taking the non-point source pollution control situation in a southern township located in the tributary of the Yuanjiang River in the west of Dongting Lake as the research object,this paper promoted the“pig-biogas-rice(vegetable,fruit,tea)”ecological breeding model in the project area,carried out non-point source pollution control through six methods,which were called farmland non-point source pollution control,livestock and poultry farming pollution control,residential sewage treatment,surface runoff sewage reuse,aquaculture pollution reduction and pollution control of wetland plant feed,and promoted the application of high-efficiency ecological treatment technology for sewage and explore the establishment of an economic and efficient treatment model for agricultural non-point source pollution,with a view to providing useful practical experience and demonstration effects for the prevention and control of agricultural non-point source pollution.