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化学农药贮存时间过长或贮藏保管不善,都会使农药变质减效。其特征一般是:1.粉剂或可湿性粉剂农药如果药剂结块、结团,这说明已受潮,农药可能减效或失效。2.乳油农药如按规定兑水稀释,药液静放后出现上有乳油,下有沉淀或油水分离,表明该农药已减效或失效。3.液剂农药静放后浑浊不清,有沉淀或絮状物,表明该农药已失效或减效。
Chemical pesticides storage time is too long or poor storage, will make pesticide deterioration. The characteristics are generally: 1. Powder or wettable powder Pesticide If the agent lumps, clumps, indicating that it has been damp, pesticide may be reduced or invalidated. 2. Emulsified pesticides, such as the provisions of Duishui dilution, the liquid appears on the static after EC, there is precipitation or oil-water separation, indicating that the pesticide has been reduced or invalid. 3. Liquid pesticide after the muddy cloudy, with sediment or floc, indicating that the pesticide has been invalidated or reduced.