平菇是一种好氧菌,生活期要不断吸入氧气,呼出二氧化碳。笔者用棉籽壳袋料栽培平菇发现,在菌丝吃料1/2～2/3时,有的出现吃料减慢,甚者菌丝萎缩、死亡。其原因是袋膜封盖太严,料底紧、湿度大,引起培养料发酵产生的废气积聚,氧气不足所致。若不及时补救,必将引起减产。针对这个问题,笔者进行了袋内空气注射试验,收 Pleurotus ostreatus is a kind of aerobic bacteria, life should continue to inhale oxygen, exhale carbon dioxide. I used cottonseed hull bagging mushroom cultivation found that the mycelium eat 1/2 ~ 2/3, and some appear to eat slow down, or even mycelium atrophy, death. The reason is that the bag film is too tight, the end of the material tight, humidity, causing the culture material fermentation waste gas accumulation, due to lack of oxygen. If not remedied in time, it will surely cause a cut in output. In response to this problem, I conducted a bag of air injection test, income