Facility vegetable substrate in plateau region and preparation method thereof

CN120898704BActive Publication Date: 2026-06-26日喀则市农牧业科学研究推广中心
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
日喀则市农牧业科学研究推广中心
Filing Date
2025-09-04
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Vegetable substrates in high-altitude areas have poor resistance to ultraviolet radiation and cannot provide sufficient nutrients, resulting in limited vegetable growth and reduced yield and quality.

Method used

A combination of fermented sheep manure, modified vermiculite, and nutrient soil was used. Multi-stage fermentation promoted microbial activity and enhanced the water and fertilizer retention capacity of the substrate. The modified vermiculite was improved by acid stripping and sodium aluminate treatment to enhance its resistance to ultraviolet radiation. Combined with calcium and phosphorus sources, hydroxyapatite loading was generated to achieve slow release of phosphorus and calcium. The nutrient soil was modified with silane coupling agents to modify urea and trace elements, enhancing the slow release of nutrients. The low-temperature resistance was enhanced by encapsulation with hydroxypropyl cellulose and polyvinylpyrrolidone.

Benefits of technology

It improves the water absorption and retention capacity and nutrient supply capacity of greenhouse vegetable substrates in plateau areas, adapts to the low oxygen and low temperature environment of plateau, reduces nutrient loss, promotes plant growth, and increases vegetable yield and quality.

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Abstract

The application belongs to the technical field of vegetable substrates, and particularly relates to a facility vegetable substrate in a plateau area and a preparation method thereof; the final mixture is obtained by mixing fermented sheep manure and nutrient soil, adding a mixture of vermiculite and a sodium carboxymethyl cellulose aqueous solution to obtain the vegetable substrate; the preparation method of the nutrient soil comprises the following steps: mixing urea, boric acid, EDTA chelated iron, EDTA chelated zinc, EDTA chelated copper and ammonium molybdate, heating to 38-42 DEG C, spraying a kH550 silane coupling agent solution, stirring at 58-63 DEG C for 1.8-2.2 h, adding to deionized water, heating to 40-43 DEG C, adding hydroxypropyl cellulose, polyvinylpyrrolidone, Tween 80 and sorbitol, spray drying, mixing with biochar and alfalfa powder to obtain the nutrient soil; the vegetable substrate prepared by the application has excellent water absorption and water retention performance, good ultraviolet radiation resistance, effectively promotes the growth and development of vegetables, and improves the yield and quality of vegetables.
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