Biological nitrogen fixation bnc method for preparing biological stable fertilizer and its use

By using filamentous Pristiella and specific encapsulating agents, bio-stabilized fertilizers have solved the problems of environmental unfriendliness and unstable efficacy of existing stabilized fertilizers, achieving efficient nitrogen utilization and increased crop yields in different soil environments.

CN122167229APending Publication Date: 2026-06-09HUBEI NITROGEN ENERGY AGRICULTURAL BIOTECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUBEI NITROGEN ENERGY AGRICULTURAL BIOTECHNOLOGY CO LTD
Filing Date
2026-02-12
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing stable fertilizers rely on chemical inhibitors, which have problems such as being environmentally unfriendly, having unstable effects, and being costly. They are difficult to apply to all soils, and the combined use of urease inhibitors and nitrification inhibitors can lead to resistance, resulting in unstable fertilizer yield-increasing effects.

Method used

Filamentous Pristiella is used as a strain with urease inhibition and nitrification inhibition functions. Combined with encapsulating agents such as trehalose, polyglutamic acid, molasses, palm oil and epoxidized soybean oil, a bio-stable fertilizer is prepared by disc granulation or drum mixing to ensure the activity and colonization of the microbial agent in high temperature, high salt and soil environments.

Benefits of technology

It has achieved efficient suppression of ammonia volatilization and nitrate leaching loss of stable fertilizers in different soil environments, improved crop nitrogen utilization, reduced environmental pollution risks, and reduced production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a biological stable fertilizer prepared by a biological nitrogen conservation BNC method and application thereof. The biological stable fertilizer is composed of filamentous pristinamycin bacteria powder with urease inhibition and nitrification inhibition functions, urea and a wrapping agent. The wrapping agent is composed of trehalose, polyglutamic acid, molasses, palm oil and epoxy soybean oil. The filamentous pristinamycin bacteria is screened from multiple strains and is superior to other strains in urease inhibition and nitrification inhibition. On this basis, the amount of the wrapping agent for the bacteria powder is optimized, the optimal ratio is determined through orthogonal test, and the bacteria agent wrapping stability and the fertilizer slow-release performance are improved. Finally, for key processes such as disc granulation, hub mixing, atomization spraying and the like, parameters such as time, rotating speed and atomization pressure are optimized, the bacteria agent inactivation rate is reduced, and the fertilizer blending uniformity is ensured.
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