一、死菇主要原因有:①出菇密度大,营养供应不足。②高温高湿,二氧化碳积累过量,幼菇缺氧窒死。③机械损伤。④培养基过干,覆土含水量过小。⑤幼菇期或低温季节喷水量过多,导致菇体水肿黄化,溃烂死亡。⑥用药不当,产生药害。⑦秋菇遇寒流侵袭,或春菇棚温上升过快,而料温上升缓慢,造成温差过大,导致死菇。⑧秋末温度过高,春菇气温回升过快,此时温度适合菌丝体生长,使小菇因养分供应不足而成片死亡。⑨严冬棚温长时间在冰点以下,造成冻害而成片死亡。⑩病原微生物侵染和虫害。 First, the main reasons for dead mushrooms are: ① fruiting density, lack of nutrition supply. ② high temperature and humidity, excessive accumulation of carbon dioxide, young mushrooms died of hypoxia. ③ mechanical damage. ④ medium over dry, overburden moisture content is too small. ⑤ young mushrooms or low season spray water volume too much, resulting in edema edemas etiology, ulceration and death. ⑥ improper medication, resulting in injury. ⑦ autumn mushrooms hit the cold flow, or spring mushroom greenhouse temperature rise too fast, and the material temperature rise slowly, resulting in temperature difference is too large, resulting in dead mushrooms. ⑧ late autumn temperature is too high, spring mushroom temperatures rose too fast, this time the temperature for mycelium growth, so that the mushrooms due to insufficient supply of nutrients and tablets died. ⑨ winter shed temperature for a long time below the freezing point, causing freeze damage and film death. ⑩ pathogenic microorganisms and pests.