灰霉病是近几年来大棚番茄上的一种主要病害,幼苗期和成株期均可发生,花、果、叶、茎均可受害,尤以青果受害最重,对番茄产量和品质影响很大。为害症状幼苗受害,先在叶片和叶柄上产生水渍状病斑,腐烂后干枯,表面密生灰色霉层。发病重时扩展到幼茎上致幼苗猝倒死亡。成株期主要为害果实,其次是叶片。果 Botrytis cinerea is a major disease on tomato in greenhouse in recent years. Seedling and adult stage can occur. Flowers, fruits, leaves and stems can be harmed, especially the green fruits suffer the most, which affects the yield and quality of tomato Great. Harm seedlings damage symptoms, first in the leaves and petioles on the water stain-like spots, rot after the dry, gray surface moldy mold layer. Severe onset extended to young stems caused by seedling cataplexy death. Adult plant damage fruit, followed by the leaves. fruit