文章从生态学角度对湖泊面源污染进行了深入分析，指出湖泊面源污染的实质是资源利用问题，并由此提出在湖区及湖泊水源区开展农业生态工程建设，降低资源消耗，减少污染物产生，达到控制和治理湖泊面源污染之目的。介绍了农业生态工程建设的一般程序、主要建设研究内容。最后列举北京市大兴县留民营村农业生态工程建设和胜利油田大型生态农场建设两个典型案例，具体介绍农业生态工程建设对发展经济、改善环境、减少化肥及农药用量、消除土壤污染、治理与控制面源污染的重要作用。

This paper, from the view point of ecology, thoroughly analyses the surface source pollution of lakes, points out the crux of lake surface source pollution is the issue of resource utilization. So that the author suggests that in lake areas and lake water resource regions the construction of agricultural ecological projects should be carried out so as to reduce resource consumption and minimize pollutant discharge thus attain the goal of lake surface source pollution control and prevention. This paper also introduces the general procedures and major construction research contents of the agro-ecological project in Liuminying Village, Beijing and the large-scale eco-farming construction in Shengli Oil Field, and particularly introduces the significant role of agro-ecolog-ical construction project in economic development, environmental improvement, reducing of fertilizer and pesticide consumption, soil pollution elimination, control and prevention of surface source pollution.