自一九七五年印度Rangaswami等人提出凤尾菇能固氮之后,国际上不少科学家如K·Ycho等都发表过怀疑的看法,但并没有列出具体的试验数据.我们在研究稻草到凤尾菇的物质转化中,出现氮素不平衡的现象,即生产出来的凤尾菇及其残余培养料的总氮量超过原来培养料的总氮量,从而引起我们对研究此问 Since 1975, India Rangaswami, who can fix nitrogen fixation mushrooms, many international scientists such as K · Ycho have published a skeptical view, but did not list the specific experimental data.We are studying the straw to Pleurotus mushroom transformation, there is the phenomenon of nitrogen imbalance, that is, the production of Pleurotus ostreatus and its residual culture of total nitrogen than the original total amount of culture medium, which led us to study this question