灰霉病，随着日光温室的发展为害越来越严重。除为害黄瓜、番茄、西葫芦外，还可为害多种蔬菜。一、为害症状主要为害果实，其次可为害叶片和茎。病菌主要从开败的雌花花瓣侵人，造成花腐烂，并长出灰色的霉层。进而为害柱头，然后向果实扩展。果实发病开始果皮呈灰白色水渍状 Gray mold disease, with the development of solar greenhouse is more and more serious. In addition to cucumber, tomato, zucchini, but also harmful to many kinds of vegetables. First, the main symptoms of harmful fruit damage, followed by damage to leaves and stems. The germs mainly invade from the defeated female flower petals, causing flower decay and growing gray mold layer. Then stigma stigma, and then expand to the fruit. The fruit began to peel pale gray stains