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一、前言 1957年Parker曾指出,禾本科牧草与徽生物之间为非共生关系。当时他对此略有怀疑。但他假设,在根际固氮的是利用植物根排泄物的微生物。根据1963年Moore的记载,在盆钵
I. Preface In 1957, Parker once pointed out that there is a non-symbiotic relationship between gramineous grass and emblem. At that time he was slightly skeptical. But he hypothesized that nitrogen fixation in the rhizosphere is a microbe that uses plant root excrement. According to the 1963 Moore records, in pots