灰霉病是发生在保护地（日光温室和大棚蔬菜上的一种特有病害，属半知菌亚门真菌，主要危害黄瓜、西葫芦、番茄、茄子、辣椒和韭菜等蔬菜）。一旦发病，轻者减产３０％左右，重者可损失９０％以上。该病目前已成为我县危害保护地蔬菜的最主要病害之一。 低温（１５℃～２０℃） Botrytis cinerea is a peculiar disease that occurs in protected areas (sunlight greenhouses and greenhouse vegetables, belonging to the subdivision Amyotrophic fungi, which mainly endangers cucumbers, zucchini, tomatoes, eggplants, peppers and leeks). Once the disease, light output reduction of about 30%, severe cases can be lost more than 90%. The disease has now become one of the most important diseases that endanger the protection of vegetables in our county. Low temperature (15 ℃ ~ 20 ℃)