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黄瓜白粉病(Sphaerotheca fuliginea)是黄瓜主要病害之一。近年来,随着保护地生产发展,为害越来越严重,一般减产11-20％,严重的达50％以上。1983-1984年,我们和中国农科院原子能所农抗组协作,进行了生物农药Bo-10防治黄瓜白粉病试验。 Bo-10是中国农科院原子能所农抗组,从福建省武夷山区采集的土壤中分离出的一种链霉菌。根据菌株形态及生理生化的研究、鉴定,定名为:不吸水链霉菌武夷变种(Streptom-yces ahygroscopicus var.wuyiensis)。经过两年在保护地上使用,在发病初期,稀释150～200倍(即50-75单位),防效达90％以上。
Sphaerotheca fuliginea is one of the major cucumber diseases. In recent years, with the development of protected areas, the damage is more and more serious, with a general decrease of 11-20% and a serious increase of over 50%. 1983-1984, we and the Chinese Academy of Agricultural Sciences Atomic Energy Agronomy collaborated on the biological pesticide Bo-10 cucumber powdery mildew test. Bo-10 is a streptomyces isolated from the soil collected from Wuyi Mountain, Fujian Province, China. According to the strain morphology and physiological and biochemical research, identification, named as: Streptomyces non-Streptomyces species (Streptom yces ahygroscopicus var .wuyiensis). After two years in the protection of the ground, early in the onset, dilute 150 to 200 times (ie 50-75 units), control effect of more than 90%.