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在生产中应用固氮菌接种,能刺激作物生长,提高有机肥质量。但自生固氮菌须经人工分离培养,始能从土壤中获得固氮效能较高的菌种。习用的分离方法为土壤颗粒法、抹泥法、大盘培养分离法等。这些方法工作量大,进度慢。近年来,我们摸索出一套简易分离、纯化、培养自生固氮菌的方法,能在较短时间内获得一些生长快、固氮率高的新菌株;而且在
In the production of nitrogen-fixing bacteria inoculation, can stimulate crop growth, improve the quality of organic fertilizer. However, autotrophic Azotobacter must be separated and cultivated by artificial methods, and the bacteria with higher nitrogen fixation ability can be obtained from soil. The separation methods used for the soil particle method, mud method, the broader market culture separation method. These methods are heavy workload and slow progress. In recent years, we have explored a set of simple methods for isolating, purifying and cultivating autotrophic Azotobacter, which can get some new strains with fast growth and high nitrogen fixation rate in a short period of time.