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一、什么是保护性杀菌剂 在病菌侵染作物之前,先在作物表面上施药,防止病菌入侵,起到保护作用,这类杀菌剂称为保护性杀菌剂。保护性杀菌剂的防病特点是,杀菌剂施用后,能在作物的表面形成一层透气、透水、透光的致密性保护药膜,这层保护药膜能抑制病菌孢子的萌发和入侵,从而达到杀菌防病的目的。例如,目前苹果上用于防治轮纹烂果病、叶斑病的喷克,葡萄上用于防治霜霉病、黑痘
First, what is a protective fungicide Before the bacteria invade the crops, the first application of pesticides on the crop surface to prevent the invasion of germs, play a protective role, such fungicides as protective fungicides. The characteristics of the protective fungicide is that after the fungicide is applied, a layer of breathable, water-permeable and light-tight compact protective film can be formed on the surface of the crop, which protects the spore germination and invasion of the bacteria, So as to achieve the purpose of sterilization and disease prevention. For example, Apple is currently used to control rotten rot rot disease, leaf spot spray Spoke, grape on the prevention and treatment of downy mildew, acne