What Is an Azotobacter?

Azotobacter belong to the family of bacteria. The bacilli are rod-shaped, ovoid or spherical, without endophytic spores, and Gram-staining is negative. Aerobic, anaerobic, and facultative anaerobic are all organic nutrition type, which can fix nitrogen in the air. Including Azotobacter, Amonomonas, Bayerinckia and Dexterella. Azotobacter fertilizers are mostly made by members of the genus Azotobacter. ^[1]

1. nitrogen-fixing bacteria

In nitrogen-free culture, when the temperature is 18 ~ 40 , the strains can all grow and have nitrogenase activity. The optimum growth and nitrogen fixation temperature is 26 ~ 37 ; 8.0), the strains can maintain strong

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Among the various nitrogen-fixing bacteria, the most famous

Nowadays humans use chemical methods to produce nitrogen fertilizer. Not only are very harsh conditions such as high temperature and high pressure required, but also a lot of raw materials are wasted, and the effective utilization of nitrogen molecules is very low. Nitrogen-fixing bacteria fix about 150 million tons of nitrogen fertilizer from the air every year, which is several times the total amount of nitrogen fertilizer produced by the world. Therefore, scientists are seriously studying the composition of nitrogenase. In the 1970s, Chinese scientists imitated molecules that have similar functions to nitrogenase and can fix nitrogen. It is believed that in the near future, human beings will certainly be able to learn and utilize the ability of nitrogen-fixing bacteria to use nitrogen fertilizers skillfully.