在西藏,菌核病是70年代末开始发生在温室及塑料棚蔬菜上的新病害。80年代以来,随着保护地蔬菜栽培面积扩大,复种指数提高,菌源积累,菌核病迅速成为保护地蔬菜的一大病害。茄果类、瓜类、豆类、绿叶菜类等多种蔬菜均可严重受害。据不同地区主要蔬菜生产基地调查,发病面积占调查总面积的30％以上,病株率一般为10～20％,严重的达50～80％。为防治提供科学依据,笔者对菌核病发生规律进行了调查 In Tibet, sclerotinia is a new disease that began to occur in greenhouses and plastic shed vegetables in the late 1970s. Since the 1980s, with the expansion of vegetable cultivation in protected areas, the improvement of multiple cropping index and the accumulation of bacterial sources, sclerotinia rapidly became a major disease in protected vegetable areas. Solanaceous fruits, melons, beans, green leafy vegetables and other vegetables can be seriously harmed. According to the investigation of major vegetable production bases in different regions, the incidence area accounts for more than 30% of the total area surveyed, and the diseased plant rate is generally 10-20% and seriously reaches 50-80%. To provide a scientific basis for prevention and treatment, I conducted a survey on the occurrence of sclerotinia