A liquid water-soluble fertilizer based on fermented-enzymatic hydrolysis milk and a preparation method and application thereof

By using a fermentation-enzymatic hydrolysis method for milk, the issues of stability, safety, and compatibility of milk-based liquid fertilizers have been resolved, improving the absorbability of nutrients and product standardization, resulting in a stable liquid water-soluble fertilizer.

CN122102802APending Publication Date: 2026-05-29LIAONING TIANRUMI BIOFERTILIZER DEVELOPMENT & MANUFACTURING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LIAONING TIANRUMI BIOFERTILIZER DEVELOPMENT & MANUFACTURING CO LTD
Filing Date
2026-03-09
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing milk-based liquid fertilizers suffer from problems such as insufficient system stability, high hygiene and biosafety risks, insufficient effective nutrient factors, poor compatibility, and difficulty in standardizing key indicators.

Method used

Milk is fermented and enzymatically hydrolyzed to selectively degrade milk protein into absorbable free amino acids and oligopeptides. The pH value is controlled within the range of 4.0-5.5 or 6.0-6.8. Water-soluble nutrient salts and trace elements are added, and the mixture is then subjected to enzyme inactivation, sterilization, clarification, and filtration to form a stable liquid water-soluble fertilizer.

Benefits of technology

It has improved the stability and biosafety of liquid water-soluble fertilizers, enhanced the absorbability and compatibility of nutrients, and met the key indicator requirements of industry standards.

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Abstract

The embodiment of the application discloses a kind of liquid water-soluble fertilizer based on fermentation-enzymatic hydrolysis milk and its preparation method and application.The preparation method includes: lactic acid bacteria ± yeast is fermented to dairy substrate to pH 3.8-4.6, then under the condition of pH 6.8-7.5, 45-60 ℃, with compound protease / lactase enzymolysis to DH10-25%, after enzyme inactivation sterilization and microfiltration clarification, add water-soluble NPK, potassium humate, medium element and trace element, and with amino acid complexing amino nitrogen: metal 2:1-8:1, adjust pH 4.0-5.5 or 6.0-6.8 to obtain finished product.The fertilizer free amino acid and oligopeptide content is high, trace element is stable, spray compatibility is good, drip irrigation is not blocked, meets current liquid water-soluble fertilizer standardization detection requirement, suitable for foliar spray or drip irrigation application.
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