Foliar phosphorus nutrient based on efficient phosphorus absorption and preparation method thereof

CN119797979APending Publication Date: 2025-04-11INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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Patent Information

Application Number
CN202411976810.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-04-11

AI Technical Summary

Technical Problem

The existing foliar phosphorus nutrients have shortcomings in phosphorus absorption and continuous phosphorus supply performance, resulting in low absorption efficiency of crops and rapid nutrient loss.

Method used

The combination design of phosphorus hydroxyl modified apatite nanoparticles and chitosan-coated phosphate microcapsules is achieved through the high specific surface area and good surface chemical activity of apatite nanoparticles, combined with the coated structure of chitosan, the rapid release and sustained release of phosphorus are achieved.

Benefits of technology

It significantly improves the absorption efficiency of phosphorus by plants and achieves long-term phosphorus supply, thereby meeting the demand for efficient and environmentally friendly nutritional agents in agricultural production.

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Abstract

The invention relates to the technical field of agriculture, and provides a foliar phosphorus nutrient based on efficient phosphorus absorption and a preparation method thereof. The nutrient is composed of phosphorus hydroxyl modified apatite nanoparticles, chitosan coated phosphate microcapsules, fatty alcohol-polyoxyethylene ether, glycerin, polyvinylpyrrolidone, sodium alginate, propylene glycol, a chelated iron fertilizer, potassium humate, deionized water and a proper amount of a pH regulator. The preparation method comprises the following steps: by taking annealed eggshell powder as a calcium source, preparing apatite nanoparticles with the particle size of 50-100nm by a hydrothermal method; the chitosan coated phosphate microcapsule is prepared by spray drying, and the coating rate reaches 85-92%. The nutritional agent stably exists within the pH range of 6.5-7.5 by optimizing the formula proportion and process parameters, has good slow release property and efficient phosphorus absorption, remarkably improves the phosphorus absorption efficiency of plants, supplements trace elements at the same time, is suitable for foliage spraying of various crops, and has efficient, environment-friendly and wide application prospects.
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Citation Information

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