喷布杀菌剂仍然是防治黄瓜霜霉病的重要手段之一,迄今,生产上还是以使用代森锌、退菌特等有机硫、砷杀菌剂为主,由于药效不理想和有效期短,农民便把药剂浓度加大,使用间隔期缩短,在黄瓜生长期喷药12～18次,造成投资大,污染严重,还不能较好的控制病害。1980年,在我省推广了百 Spraying disinfectant is still one of the important measures to prevent cucumber downy mildew, so far, the production is still to use dexamethasone, detoxification special organic sulfur, arsenic fungicides, due to ineffective and short duration of efficacy, farmers Put the drug concentration increases, the use of shorter intervals, the cucumber in the growing period of spraying 12 to 18 times, resulting in a large investment, serious pollution, but also can not better control the disease. In 1980, it promoted 100 in our province