Complex bacterium preparation for fixing nitrogen, solubilizing phosphorus and potassium and rooting and preparation method thereof

Abstract

The invention discloses a complex bacterium preparation for fixing nitrogen, solubilizing phosphorus and potassium and rooting and a preparation method thereof. The preparation is mainly prepared by mixing the following raw materials in parts by weight: 5-20 parts of azotobacter vinelandii, 10-30 parts of bacillus megatherium, 10-30 parts of bacillus mucilaginosus, 5-15 parts of azotobacter chroococcum, 10-15 parts of glomus intraradices and 10-25 parts of glomus mosseae. The preparation method comprises the following steps: respectively carrying out high-density culture on each strain; grafting to a shake flask filled with a culture medium in a volume ratio of 15-30 percent for activated culture; grafting the cultured strains into a fermentation tank for fermentation culture expansion; dehydrating and drying the culture expanded single strains to prepare hypopus microorganism dried powder; and mixing to obtain the complex bacterium preparation for fixing nitrogen, solubilizing phosphorus and potassium and rooting. The complex bacterium preparation is used for industrial crops, fruit trees, food crops and the like, has the advantages of biological property, environmental friendliness, high yield and high quality in comparison with existing products, and cannot pollute soil.

Description

technical field [0001] The invention relates to the technical field of bioengineering microbial fermentation, in particular to a nitrogen-fixing, phosphorus-solubilizing, potassium-solubilizing, rooting compound bacterial preparation and its preparation technology. Background technique [0002] In recent years, due to the heavy application of nitrogen and phosphorus fertilizers, the nutrient supply in the soil is no longer balanced, which inhibits the absorption of other elements, resulting in the decline of crop resistance and the aggravation of diseases and insect pests year by year. Variety of pesticides to combat growing pests and diseases. With the continuous improvement of grain yield, the amount of nitrogen and phosphorus fertilizers is also increasing, and the resulting vicious circle of agricultural problems has become increasingly prominent. Therefore, it is imminent to change the traditional concept of fertilization and create a healthy, green and efficient ecolo...

AI Technical Summary

Problems solved by technology

[0005] The second technical problem to be solved by the present invention is to provide a method for preparing a compound bacterial preparation that is biological, environmentally friendly, and simultaneously has the functions of nitrogen fixation, phosphorus dissolution, potassium dissolution, and rooting functions. The prepared compound bacterial preparation can enhance plant resistance. Reversibility, improve crop quality, save energy, reduce the use of chemical fertilizers and pesticides, reduce pollution, thereby eliminating the defects in the above-mentioned background technology

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