'Tianshan 2',a cultivar of pleurotus nerbrodensis,was subjected to optimization experiments of nutritional factors and environmental factors in a phytotron at the matemal fungus culture stage and different stages in the whole growth and development period.At the same time,there was studied the law of degradation and use of bastose by the fungus cultured on the cottonseed shell medium,the law of ectoenzyme activity variation in the growth and development period,the physiological mechanism of primordium...