灰霉病是保护地西葫芦的常见病害，主要为害西葫芦花、叶、茎和幼瓜。该病发生的轻重与生产者管理水平的高低有很大关系。管理好可以做到不发生，管理不好轻者减产１０％，重者减产３０％以上。灰霉病菌多从开后的花侵入，致使花腐烂，并产生灰色的霉。逐渐向幼瓜扩延造成瓜条 Botrytis cinerea is a common disease of zucchini in the protected area. It mainly damages the zucchini flowers, leaves, stems and young cucumbers. The severity of the disease has a lot to do with the level of producer management. Good management can be done, less well managed to reduce production by 10%, heavy reduction of more than 30%. Botrytis more invaded from the flowers after opening, resulting in flower decay, and produce gray mold. Gradually increase the melon caused by melon