Pesticides are widely used in the agriculture,which have solved the problem of the shortage of food supplies,while they and their degradations have contaminated the water environment synchronously.

• 农药在农业生产上的广泛应用,解决了粮食产量问题,但同时农药及其代谢产物对水生态环境造成了严重污染,从而影响了人们的正常生活。