Ecological fertilizer with sulfur-coated trace element core and preparation method thereof

CN115716764BActive Publication Date: 2024-12-10YUNNAN YUNTIANHUA
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Patent Information

Application Number
CN202211424608.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-14
Publication Date
2024-12-10
Estimated Expiration
2042-11-14

AI Technical Summary

Technical Problem

Existing fertilizers with trace elements in inorganic salts form precipitates with phosphate and/or sulfate, reducing utilization rates, and chelated or nano-scale trace elements are costly, with nutrient release patterns mismatching crop absorption, leading to reduced crop yields and quality.

Method used

A method to prepare an ecological fertilizer with a sulfur-coated trace element core by wrapping small trace element particles with liquid sulfur, followed by coating with nitrogen, phosphorus, and potassium materials.

Benefits of technology

The sulfur-coated fertilizer effectively prevents trace elements from combining with phosphate and/or sulfate, enhancing utilization and efficacy, and the sulfur-coated fertilizer releases nutrients in a layered manner, effectively addressing the technical problem of nutrient release patterns, improving crop absorption and utilization rates, and nutrient release, and nutrient release, and nutrient utilization, promoting crop growth and reducing disease occurrence.

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Patent Text Reader

Abstract

The invention discloses an ecological fertilizer with a sulfur-wrapped trace element core and a preparation method thereof, and relates to the technical field of fertilizer production. Calcium, magnesium and trace elements in the form of inorganic salts are selected for granulation to form small particles of trace elements; molten liquid sulfur is sprayed on the outside of the small particles of trace elements to form a sulfur-wrapped trace element core; preferably one of phosphate ammonium, compound fertilizer, heavy calcium and other equipment is used to wrap nitrogen, phosphorus and potassium element raw materials on the outside of the sulfur-wrapped trace element core, and finally the ecological fertilizer with a sulfur-wrapped trace element core is obtained. The above-mentioned ecological fertilizer can effectively prevent the trace elements in the fertilizer from combining with phosphate and / or sulfate. After being applied to the soil, the nutrients are decomposed and released layer by layer, and the absorption and utilization rate is significantly improved; the characteristics of nutrient element release are more in line with the law that crop nutrient absorption is low in the early stage, high in the middle stage, and gradually decreases in the late stage, providing comprehensive, sufficient, timely and available mineral nutrition for the growth of crops.
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Citation Information

Patent Citations

  • Sulfur-containing slow-release compound fertilizer and preparation method thereof

    CN105272577A

  • Environment-friendly sulfur coated type slow-release chemical fertilizer

    CN108218541A

  • Medium trace element mixture and preparation method of medium trace element-wrapped fertilizer

    CN108976018A

  • Wrapping layer, and outer wrapping type fertilizer containing medium and trace elements and having wrapping layer and preparation method thereof

    CN110981628A

  • Preparation method of high-tower medium-trace element compound fertilizer

    CN111704501A