Organic water-soluble fertilizer and preparation method thereof

By combining enzymatic hydrolysis and fermentation, acidic protease and chitinase are used to break down the shell structure, and sodium alginate is added to form a gel network. This solves the problem of poor fertilizer and water retention in sandy soil, achieving rapid nutrient delivery and improving crop yield and quality.

CN122167241APending Publication Date: 2026-06-09SHANDONG ACADEMY OF AGRICULTURAL SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG ACADEMY OF AGRICULTURAL SCIENCES
Filing Date
2026-03-27
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing organic water-soluble fertilizers have long fermentation cycles, low free amino acid content, and are difficult to meet market demand. At the same time, they have poor fertilizer and water retention in sandy soils and cannot play an effective role, especially when the nutrient demand of crops surges at specific stages.

Method used

By combining enzymatic hydrolysis and fermentation, acidic protease and chitinase are used to break down the dense structure of shellfish. Sodium alginate is added to form a gel network. Combined with the synergistic effect of EM bacteria and neutral protease, an organic water-soluble fertilizer suitable for sandy soil is prepared.

Benefits of technology

Shortening the fermentation cycle, increasing the content of free amino acids, and enhancing the water and fertilizer retention performance of organic water-soluble fertilizer in sandy soil ensures nutrient supply to crops at specific stages, thereby improving crop yield and quality.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The present application relates to a kind of organic water-soluble fertilizer and its preparation method, which uses fish waste and shell waste as raw material, after being crushed and sterilized, enzymatic hydrolysis is carried out using acid protease and chitinase to obtain enzymatic hydrolysate;Add molasses to the enzymatic hydrolysate, and inoculate mixed bacterial agent for primary fermentation to obtain fermentation liquor A;Add yeast, neutral protease and sodium alginate to the fermentation liquor A, and carry out secondary fermentation under stirring to obtain fermentation liquor B;After treating the fermentation liquor B, add chitosan to obtain the organic water-soluble fertilizer;The organic fertilizer prepared by the method of the present application can utilize shell waste, and the obtained organic water-soluble fertilizer can improve its water-retaining and fertilizer-retaining performance in sandy soil while meeting the standard requirements of amino acid water-soluble fertilizer.
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