Pseudomonas koreensis WF3 and saline-alkali soil microbial fertilizer, and preparation method and application thereof

Microbial fertilizers prepared by fermentation with Pseudomonas krusei WF3 solve the problem of crop growth inhibition in high saline-alkali soils. By producing extracellular polysaccharides and organic acids, the fertilizers improve soil, increase crop yield and stress resistance, and improve soil structure.

CN121779160BActive Publication Date: 2026-06-23INST OF SOIL FERTILIZER & WATER SAVING AGRI GANSU ACAD OF AGRI SCI
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Patent Information

Application Number
CN202610254608.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-03-04
Publication Date
2026-06-23
Estimated Expiration
2046-03-04

AI Technical Summary

Technical Problem

High salinity and alkalinity soils inhibit crop growth, and existing microbial fertilizers are insufficient to effectively improve saline-alkali soils and increase crop yields and stress resistance.

Method used

Microbial fertilizer was prepared by fermentation with Pseudomonas krusei WF3. By utilizing its ability to produce extracellular polysaccharides and organic acids, it improved saline-alkali soil, increased the content of soil organic carbon, total nitrogen and water-stable macroaggregates, reduced soil pH and total salt content, and promoted maize growth.

Benefits of technology

It significantly improves the germination rate, fresh weight, dry weight, root length and root index of maize seedlings, reduces the content of soluble sugar and proline, increases maize yield, and improves soil structure and fertility.

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Abstract

The application provides a pseudomonas koreensis WF3 and a saline-alkali soil microbial fertilizer, a preparation method and application thereof, and belongs to the technical field of biological composting.The preparation method of the saline-alkali soil microbial fertilizer provided by the application comprises the following steps: (1) configuring a fertilizer carrier comprising matured organic fertilizer, humic acid, attapulgite powder and polyglutamic acid; (2) inoculating the pseudomonas koreensis WF3 into the fertilizer carrier, and carrying out sealed fermentation to obtain the saline-alkali soil microbial fertilizer.The pseudomonas koreensis WF3 has the abilities of producing extracellular polysaccharides and organic acids, and can survive in a strong saline-alkali environment; the fertilizer carrier is fermented by the pseudomonas koreensis WF3; the prepared microbial organic fertilizer can effectively improve the soil organic carbon, total nitrogen and water-stable large aggregate (>2.5mm) content, increase the corn yield, reduce the soil pH and total salt content, and has a remarkable improvement effect on the saline-alkali soil.
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