Bacillus mucilaginosus with potassium-decomposing function and application thereof

Abstract

The invention discloses a bacillus mucilaginosus with a potassium-decomposing function and application thereof, and relates to a bacillus mucilaginosus and a method for decomposing silicate mineral to release effective potassium by using the bacillus mucilaginosus. The method comprises the steps of: inoculating a strain to a potassium bacterium liquid activating culture medium, shaking and culturing for 24h at a temperature of 30 DEG C, inoculating to a potassium decomposing measuring culture medium in an inoculating amount of 2-10 percent, inoculating a contrast with equivalent inactivating bacterium liquid, shaking and culturing for 10 days under the conditions that the liquid loading capacity is 50ml, the temperature is 24-37 DEG C, the pH value is 6.5-8.0 and the speed is 160rpm; and taking 5ml of fermenting liquid, placing in 100 DEG C boiled water for heating, intermittently adding 6 percent H2O2 until the fermenting liquid is clear, filtering, fixing the volume to 100ml, diluting by 5 times based on the fixed volume, and measuring the content of potassium ions by using an atomic absorption spectrophotometry. The strain can be applied to preparing a silicate bacterial fertilizer and decomposing aluminosilicate minerals of potash feldspar or mica and the like in soil so as to release soluble potassium to be absorbed and utilized by plants, thereby reducing the application amount of a chemical potassium fertilizer, improving the soil microenvironment, and improving the quality of agricultural products.

Description

technical field [0001] The invention relates to a new colloid bacillus strain and its application, in particular to a colloid bacillus (Bacillus mucilaginosus) NK 102 with potassium-dissolving function and a method for releasing silicate mineral potassium by using the colloid bacillus strain. Background technique [0002] Soil is a natural potassium pool, rich in potassium, but more than 95% of potassium exists in silicate minerals such as potassium feldspar or mica in a slow-acting state, which cannot be directly absorbed and utilized by crops, which leads to The soil is both rich in potassium and deficient in potassium. [0003] Potassium fertilizer resources are scarce in China, and a large amount of imports is needed to meet the development of modern agriculture. The chemical potash fertilizers commonly used at present not only have high cost and low utilization rate, but also cause certain damage to the ecological environment and affect the quality of agricultural produ...

AI Technical Summary

Problems solved by technology

[0003] Potassium fertilizer resources are scarce in China, and a large amount of imports is needed to meet the development of modern agriculture. The chemical potash fertilizers commonly used at present not only have high cost, low utilization rate, but also cause certain damage to the ecological environment and affect the quality of agricultural products.

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