Preparation method and application of liquor-making wastewater liquid organic fertilizer for sorghum

By concentrating and adjusting the pH value of brewing wastewater and adding nitrogen, phosphorus, and potassium elements, liquid organic fertilizer was prepared from brewing wastewater. This solved the problems of resource utilization of brewing wastewater and nutrient matching for sorghum, and improved the growth performance of sorghum.

CN121494640APending Publication Date: 2026-02-10MOUTAI INST
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Patent Information

Application Number
CN202511838639.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-08
Publication Date
2026-02-10

AI Technical Summary

Technical Problem

Existing technologies lack methods for the resource utilization of brewing wastewater and the preparation of organic fertilizers that are suitable for sorghum growth nutrients, making it difficult to significantly improve sorghum yield and quality after brewing wastewater treatment.

Method used

By concentrating brewing wastewater and adjusting the pH to 6-7, and adding elements such as nitrogen, phosphorus, and potassium to adjust the content of single element nutrients to ≥20g/L, brewing wastewater liquid organic fertilizer is prepared for use in sorghum planting.

Benefits of technology

It realizes the resource utilization of brewing wastewater, provides rich organic matter and nutrients needed for sorghum growth, significantly increases sorghum plant height, leaf area, number of leaves, fresh weight and dry weight, and reduces root length.

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Abstract

The invention discloses a preparation method of a liquor-making wastewater liquid organic fertilizer for sorghum, which comprises the following steps: S1, concentrating liquor-making wastewater to obtain a concentrated solution; s2, adjusting the pH value of the concentrated solution to 6-7; s3, adjusting the concentrated solution obtained in the step S2 to enable the nutrient content of a single element to be greater than or equal to 20g / L to obtain the wine brewing wastewater liquid organic fertilizer. The wine brewing wastewater organic liquid fertilizer prepared by the method is applied to sorghum and can improve the plant height, chlorophyll synthesis and biomass accumulation in the seedling stage of the sorghum and increase the yield of the sorghum; meanwhile, resource utilization of the wine brewing wastewater is realized.
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