A method for preparing a growth-promoting bio-organic fertilizer based on multi-strain compounding

By using Schiff base grafting reaction of functionalized modified carrier materials, the problems of high inactivation rate of live bacteria and insufficient storage stability of bio-organic fertilizer under soil stress were solved, realizing stress resistance protection and targeted slow release of multiple strains, and improving the growth promotion effect and stability of fertilizer.

CN122404073APending Publication Date: 2026-07-17BAODING KELVFENG BIOCHEMICAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BAODING KELVFENG BIOCHEMICAL TECH CO LTD
Filing Date
2026-06-02
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing bio-organic fertilizer carriers lack chemical bonding protection and microenvironment regulation capabilities, resulting in high inactivation rates of live bacteria under soil stress, insufficient storage stability, and an inability to achieve targeted and responsive slow release of bacterial strains and growth-promoting components in the rhizosphere.

Method used

Functionalized modified carrier materials are used to prepare functionalized multi-strain growth-promoting additives by forming Schiff base grafting reactions between oxidized sodium alginate and growth-promoting small molecule peptides or amino-modified humic acid derivatives. These additives are then compounded with commercially available organic fertilizers to form a water-retaining buffer layer, achieving stress resistance protection and targeted slow release of live bacteria.

Benefits of technology

It improves the survival rate and storage stability of multiple bacterial strains, realizes the slow release of active bacterial groups under the action of roots, enhances the growth-promoting effect and stability of fertilizers, and simplifies the preparation process.

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Abstract

本发明涉及农业肥料技术领域,具体为一种基于多菌种复配的促生生物有机肥配制方法;包含天然高分子骨架制备、功能化改性载体中间体制备、功能化多菌种促生添加剂制备及复配成型步骤;本工艺通过氧化海藻酸钠与促生小分子多肽或氨基化腐殖酸衍生物发生席夫碱接枝反应,结合钙离子物理交联形成双重网络水凝胶对多菌种进行微胶囊包裹;其核心是利用席夫碱键的微酸性响应断裂特性,在作物根系有机酸诱导下实现菌‑肥‑促生信号的精准靶向缓释;本发明取代了传统的物理吸附载体,利用化学改性与物理化学包膜造粒解决活菌在土壤胁迫下易失活及贮存期短的问题,显著提升了多菌种的存活率,并实现了肥料配制工艺的标准化升级。
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