Which pesticides can be mixed? Which can not be mixed? In addition to selecting oral pesticides based on the target of prevention and control, it is necessary to understand the chemical nature of pesticides. Mixtures of two or more pesticides do not produce undesirable chemical and physical changes before they can be mixed. According to pesticides in water melon, can be divided into acidic, neutral and alkaline three categories. Acidic pesticides such as copper sulfate, nicotine sulfate, etc.; neutral pesticides

Including a variety of organic peanuts, plant pesticides, microbial pesticides, etc.; alkaline pesticides such as Bordeaux mixture, lime sulfur mixture, cerammonium, lime and so on. When used in combination, neutral pesticides, acidic pesticides, or neutral pesticides and acidic pesticides do not produce chemical and physical changes with each other, so they can be mixed with each other, such as most organophosphorus insecticides and carbaryl, Daison ammonium, etc., can not be mixed with lime sulfur mixture, Bordeaux mixture, and can not be mixed with lime, soap, detergent and other alkaline substances. Although some pesticides decompose under alkaline conditions, their decomposition is relatively slow, and they can also be mixed with alkaline substances. However, they must be used together with them. Otherwise, precipitates may form. No protective film can be formed on plants and no disease prevention effect can be achieved. .

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