(一)形态与危害白色石膏霉病菌初期由短而密的白色菌丝结成大小不同的圆形固体状物,形似一层氧化后的石灰,吸附在培养料中,几天后交织成浓密的白色石膏样的菌斑,阻止蘑菇菌丝向上或向下延伸,出现不结菇现象,严重的绝收。到后期蘑菇菌丝消失,白色石膏霉病菌也随之发黄。 (A) morphology and damage White gypsum mycosis early by the short and dense white mycelium into a different size round solid shaped like a layer of oxidized lime, adsorbed in the culture material, a few days after the intertwined into a dense White plaster-like plaque, mushroom mushrooms to prevent upward or downward extension, there is no mushroom phenomenon, a serious failure. To the late mushroom mycelium disappeared, white plaster mold bacteria also yellow.