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农药贮藏时间过长或管理不当，都会使农药减效或失效。那么，怎样鉴别失效农药呢？现介绍几种简便的鉴别方法：１ 乳油的鉴别１．１ 稀释法取乳油农药５０ｍｌ，倒入玻璃瓶中，加水１５０ｍｌ，用力振荡静置半小时后，如果药液浓度不匀，上面有浮油出现，底部有沉淀物，表明
Pesticide storage time is too long or improper management, will make pesticides reduce or invalid. So, how to identify the failure of pesticides? Here are a few easy identification methods: Identification of 1 EC 1.1 Dilution Act Take emulsifiable concentrates 50ml, into the glass bottle, add water 150ml, forced oscillation stand for half an hour, if the liquid concentration uneven, floating above Oil appears, there is sediment at the bottom, indicating