氰戊菊酯乳油在黄瓜上的降解及安全问隔期测定

对不同剂量20％氰戊菊酯乳油在黄瓜上的农药残留量、降解率进行了检测，结果表明，黄瓜开花结瓜期喷药后3。13d20％氰戊菊酯乳油在黄瓜上的残留量从大到小依次为180g／hm^2、120g／hm^2、60g，hm^2；第7天之前各处理的降解率从高到低的排序为180gmm^2、120g／hm^2、60g／hm^2。处理60g...

Degradation of Fenvalerate EC on Cucumber and The Determination of Their Safety Interval

The amount of pesticide residues and the degradation rate on cucumber have been detected in different dose of 20% fenvalerate EC on cucumber. The results showed that the amount of pesticide residues and the degradation rate on cucumber of different dose of 20% Fenvalerate EC were in sequence of 180 g/hm^2, 120 g/hm^2, 60 g/hm^2, when 3-13 days after spraying of cucumber flowering fruiting period. The degradation rate of each treatment for high in the end sort of 180 g/hm2, 120 g/hm^2, 60 g/hm^2. The pesticide residues of on the third day before-treatment 60 g/hm^2 on cucumber were below the maximum limits for pollution standards cucumber, the pesticide residues of on the seventh day before-treatment 120 g/hm2 and 180 g/hm2 on cucumber were higher than the highest limits for pollution standards.