黄瓜灰霉病主要危害黄瓜开败的雌花瓜纽和幼瓜，是温室黄瓜生产中的一大病害。其发病条件主要是高湿。1992年3月我场日光温室黄瓜生长正处盛花结瓜期，因有20天阴雨多云天气，温室内通风排湿难，结果造成黄瓜灰霉病大发生。据3月17日调查，株发病率为100％，雌花瓜纽及幼瓜感病 Botrytis cinerea cucumber melon cucumber melon New Zealand and cucumber, the main hazard cucumber failed, is a major disease in greenhouse cucumber production. Its incidence is mainly high humidity. In March 1992, my field of greenhouse cucumber is growing Shengguazhu fruiting period, because of cloudy and rainy weather for 20 days, ventilation and drainage in the greenhouse difficult, resulting in a large gray mold cucumber occurred. According to the March 17 survey, the incidence of strains was 100%, female melon New Zealand and young cucumber flu