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近年来,作物、果蔬病虫害发生频繁,据笔者所见所闻,乡村许多农户在防治时,不会配制农药,随心倒入,个别农户造成了不应有的经济损失。为了避免此类之事今后再次发生,我从“实用”二字出发,介绍几种农药常见浓度表示及配制方法,供生产参考。一、重量百分比浓度:表示100份药液或药粉中含农药有效成分的份数。如0.1％乐果乳油稀释液,即表示100公斤这种药液中含乐果有效成分0.1公斤。这种表示方法被稀释后的药
In recent years, pests and diseases of crops, fruits and vegetables have been frequent. According to what I have seen and heard, many peasant households in rural areas do not formulate pesticides when they are preventing and controlling diseases. As a result, some peasants have caused undue economic losses. In order to avoid such occurrence from happening again in the future, I started with the word “practical” and introduced several common concentrations of pesticides and their preparation methods for production reference. First, the weight percentage concentration: that 100 parts liquid or powder containing the active ingredients of pesticides. Such as 0.1% dimethoate dilution, which means that 100 kg of this solution contains dimethoate active ingredients 0.1 kg. This means that the method is diluted medicine