Microbial composition for repairing saline alkali soil, microbial agent and application of microbial agent

By screening out a combination of salt-alkali tolerant microorganisms, the structure of saline-alkali soil was improved and the salt content was reduced, thus solving the problems of high cost and limited effect of saline-alkali land management, and achieving improvement of soil nutritional status and disease prevention and control.

CN120648594APending Publication Date: 2025-09-16RES & PROMOTION CENT FOR MICROBIAL FERTILIZER TECH
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Patent Information

Application Number
CN202510776077.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-11
Publication Date
2025-09-16

AI Technical Summary

Technical Problem

Existing methods for treating saline-alkali land are costly and have limited effectiveness, and may cause secondary pollution. The application of microbial technology in saline-alkali land treatment is not yet mature, and scientific treatment plans need to be formulated based on local climate and soil conditions.

Method used

A microbial combination, including Bacillus subtilis KC000 and Paenibacillus mucilaginosus JDY001, was used to screen out salt-alkali-tolerant strains through high-temperature mutagenesis. Microbial agents with different compound ratios were prepared and applied to saline-alkali soil to improve soil structure and reduce salt content.

Benefits of technology

Significantly improve soil nutritional status, increase soil organic matter and nutrient content, reduce soil pH, inhibit salt return, prevent and control sheath blight, improve soil permeability and water permeability, and reduce salt content.

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Abstract

The invention relates to the technical field of microbial soil remediation, in particular to a microbial composition for remediation of saline alkali soil, a microbial agent and application of the microbial agent. According to the characteristics of the bacillus subtilis KC000 and the paenibacillus mucilaginosus JDY001, different compounding proportions are set and applied to the saline-alkali soil, then the salt content of the saline-alkali soil is measured, and it is found that the soil nutrition and environmental conditions are obviously improved by applying the microbial agent, and the saline-alkali soil can be applied to the saline-alkali soil. The soil conditioner is beneficial to the growth and reproduction of paenibacillus mucilaginosus and bacillus subtilis in soil, is beneficial to improving the content of organic matters, rapidly available phosphorus and rapidly available potassium in the soil, increases the content of alkali-hydrolyzable nitrogen in the soil to a certain extent, reduces the pH value of the soil, accelerates salt leaching, inhibits salt return and reduces the salt content of the surface layer of the soil. Meanwhile, the microbial composition also has the effect of preventing and treating sheath blight.
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