大伙房水库上游地区农业面源污染现状及防治措施

通过对大伙房水库上游地区农业面源污染现状的调查研究,提出减轻农业面源污染的具体防治措施,即采用培育生物天敌、控制农药使用量、水田改为旱田和控制灌溉水的方法控制氮磷流失,从而保护水源地生态环境。

Based on the investigation of agricultural non-point source pollution in the upper reaches of Dahuofang reservoir, some were put forward for alleviating agricultural non-point source pollution, such as changing paddy field to dry farming and eontrolledirrigation （DRAmode）forthepurposeofcontrollingnitrogenandphosphoruslosses. Furthermore, theideaofbreadingupbiological predators was d!scussed in order to substitute for pesticides.