沱江流域农村径流污染因素分析及防治措施

Pollution Factors of Rural Runoff in Tuojiang Basin and Prevention Measures

本文分析了沱江流域农村径流的污染因素和农村径流对沱江的影响,并提出了防治径流污染的措施,通过两年逐月沱江监测数据表明,雨季沱江受到农村径流污染。根据分析,降雨冲刷时段集中、地形坡度加剧径流冲刷、农作物种植安排抗蚀能力差、农药化肥流失严重等是造成沱江流域农村径流污染的主要因素。在农村径流污染因素分析的基础上提出防治农村径流污染的措施。

This paper analyzed the pollution factors of rural runoff in Tuojiang Basin and the influence of rural runoff on Tuojiang River.Data from monthly monitoring for two years showed that Tuojiang River has being polluted by rural runoff in rainy season.According to analysis,the main factors included scoring in short rainy time,steep slope aggravating the washing out by runoff,improper arrangement of corps planting that had poor resistance against the eroding and pesticide and chemical fertilizer being washed aw...