Study on pesticide residues in the vegetables and the control policy

Thirteen pesticide residues in six kinds of vegetables of wholesale marketplaces,retail marketplaces,vegetable bases in Xi'an city were detected during a whole year.The characteristics of pesticide residues in different kinds of vegetables,the characteristics of residues of different pesticides,and the dynamic changes of residues in vegetables during a year were studied.The study showed that,the excessive rates in Chinese cabbage,wild cabbage and green leafy vegetable were more than that of other kinds of vegetables.And the rates are changing during a year.Five kinds of forbidden organophosphorus pesticides were found in every kind of vegetables and the quantities were various in different vegetables and various in different months.Other pesticides,which can be used to vegetables,were found frequently and some exceeded the quota.The characteristics of pesticide residues in vegetable base were related to the practice.According to above analyses,the reasons of the existing of pesticide residues in vegetables were discussed.Some measures to control the pesticide residues in vegetables were put forward.