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针对南水北调南四湖流域农业面源污染问题,设计实地试验重点研究了3种污染防治模型农村面源污染的净化效果。实验表明:建设生态功能小区,种植大型水生维管束植物芦苇、蒲草对水体中的COD、氮、磷都有明显消减作用;无公害农产品、绿色食品生产在农民群众中接受程度较高,可广泛推广用以降低化肥使用量;综合利用无害化处理、生物氧化塘、沼气处理等畜禽粪便资源化技术对治理畜禽污染有较好处理效果。
In view of the problem of agricultural non-point source pollution in Nansihu basin of South-to-North Water Diversion Project, the field experiments were conducted to study the purification effect of three kinds of pollution prevention and control model rural non-point source pollution. Experiments show that: the construction of ecological function of the district, planting large aquatic vascular plants Phragmites australis, Pucao on the water COD, nitrogen, phosphorus were significantly reduced; pollution-free agricultural products, green food production in the peasant masses with a high degree of acceptance can be widely Promote the use of chemical fertilizer to reduce the amount of comprehensive utilization of sound treatment, bio-oxidation ponds, biogas treatment and other livestock excrement technology for the treatment of livestock and poultry pollution have a better effect.