Bacillus megaterium ——Important Phosphorus Solubilizing Bacteria
Bacillus megaterium can degrade insoluble phosphorus compounds in soil and make them soluble substances that can be absorbed by crops. When mixed culture of Bacillus megaterium and Bacillus globulus has nitrogen fixation and synergistic effect, it is very suitable for making microbial fertilizer. As an important phosphorus solubilizing bacterium, Bacillus megaterium is widely used in agricultural production. Optimizing its culture into bacterial fertilizer can improve soil fertilizer quality and increase production and income. In recent years, with the wide application of microbial fertilizer in agriculture, Bacillus megaterium has been deeply studied for its phosphorus solubilization in soil. It is a common strain for the production of phosphorus solubilization and potassium fixation fertilizer in industry. At the same time, it plays a unique role in water treatment and improving the effect of tobacco fermentation and aroma enhancement. Bacillus megaterium can degrade organophosphorus pesticides and aflatoxin.
Mechanism of action of Bacillus megaterium
1.In the process of growth and reproduction, Bacillus megaterium can produce a large number of organic acids, which can decompose or dissolve the insoluble phosphorus containing substances in the soil, and convert them into phosphorus easily absorbed by plants, so as to improve the utilization rate of phosphorus.
2. A protein secreted by Bacillus megaterium, which has a strong antagonistic effect on a variety of harmful fungi in crops.
3. Bacillus megaterium can rapidly reproduce in soil, become dominant flora, control root nutrition and other resources, resulting in the loss of living space and conditions for pathogenic bacteria to a considerable extent; It can thicken the cell wall of relevant plant tissues, improve the degree of fibrosis and lignification, and form a horny double silicon layer outside the epidermal layer to form a barrier to prevent the invasion of bacteria.
Role of Bacillus megaterium
1. Improving soil fertility can decompose the insoluble phosphorus and potassium in the soil into phosphorus and potassium compounds that can be absorbed by crops, so as to increase the supply of nutrient elements in the soil.
2.Promote rapid growth: Beneficial microorganisms such as Bacillus megaterium and jelly like bacillus in the flora produce a large number of plant endogenous enzymes in the metabolic process, which can significantly improve the absorption rate of crops for nutrient elements such as nitrogen, phosphorus and potassium.
3. Regulate life activities:
The beneficial bacteria such as jelly like bacillus, lateral bacillus and lichen bacillus in the flora can promote the growth of crop roots and increase fibrous roots. The plant endogenous enzymes and plant growth regulators produced by the metabolism of beneficial microbial flora enter the plant through the root system, promote leaf photosynthesis, regulate the flow of nutrient elements to the fruit, and the effect of fruit expansion and yield increase is obvious.
4.Decompose organic matter and toxins to prevent continuous cropping:
Beneficial microorganisms such as Aspergillus oryzae, Bacillus licheniformis and Bacillus subtilis in the flora can accelerate the decomposition of organic substances, produce quick acting nutrients and provide power for crops, decompose continuous cropping toxic and harmful substances and prevent continuous cropping.
5. Enhance stress resistance:
Beneficial microorganisms such as Bacillus licheniformis, Bacillus megaterium and Bacillus lateralis in the flora can enhance the buffering capacity of soil, keep water and moisture, and enhance the drought, cold and waterlogging resistance of crops.
