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一、发病原因:日光温室内生产菜瓜,因长期处于低温环境,保温通风不良,温室内空气相对湿度高于90％,光照不足就会引起灰霉病的发生。 二、主要症状:灰霉病在菜瓜全生育期都能发生,以幼果期为害为主。灰霉病菌从雌花上浸入,花先霉烂,随之幼瓜顶端也发生霉烂,出现化瓜,烂液滴到叶和茎上,叶、茎也发生霉烂。叶片发病初期,上面有水渍状病斑,后期病斑上有如鼠色的灰紫色毛。
First, the incidence of causes: the production of solar greenhouse melon, because of long-term low temperature environment, poor ventilation insulation, greenhouse relative humidity above 90%, insufficient light will cause gray mold. Second, the main symptoms: Botrytis cinerea in the whole growth period can occur to young fruit-based damage. Botrytis cinerea immersed from the female flowers, flower first rot, along with the top of cucumber rotten also occur, there melon, rotten liquid drops to the leaves and stems, leaves, stem rot also occur. The early onset of leaves, above the water-like lesions, the lesion later, such as mouse-colored gray purple hair.