一、症状食真菌茎线虫是常见的危害蘑菇的线虫 ,能引起培养料成片褪菌 ,并逐步扩大 ,在第二潮菇或以后几潮菇中出现 ,这些成片褪菌的培养料变黑变湿 ,开始下凹 ,通常有一股令人作呕的刺鼻恶臭。钮扣菇可变黑至死 ,产量下降 ,要当季根除线虫是困难的 ,因为栽培箱（或栽培床）的 First, the symptoms of food Fungus stem nematode is a common mushroom nematode, can cause the culture material into a piece of bacteria, and gradually expanded in the second wave of mushrooms or appear after a few tidal mushrooms, Black wet, began to concave, usually with a nauseating stench of pungent odor. Button Mushroom black to death, the decline in production, to eradicate nematodes is difficult, because the cultivation box (or cultivation bed)