Multistage environmental response type bio-fertilizer and application thereof in strawberry planting

Through the three-layer microcapsule design of multi-level environmentally responsive biological fertilizer, the problem of low nutrient utilization rate in strawberry cultivation is solved, the precise release of nitrogen, phosphorus and potassium is achieved, the fruit quality and yield of strawberries is improved, and resource waste and cost are reduced.

CN120329115APending Publication Date: 2025-07-18SHANGHAI JIAOTONG UNIV
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Patent Information

Application Number
CN202510624117.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-15
Publication Date
2025-07-18

AI Technical Summary

Technical Problem

Due to the lack of precise time and air conditioning capabilities in strawberry planting, traditional fertilizers have low nutrient utilization rates, unstable fruit quality, and existing slow-release fertilizers are difficult to dynamically regulate the release rate according to soil moisture and pH, which cannot meet the needs of each stage of strawberry growth.

Method used

Using multi-level environmentally responsive biological fertilizer, the shell layer is a humidity-responsive nitrogen release layer, the intermediate layer is a pH-responsive phosphorus release layer, and the core layer is a redox-responsive potassium release layer, which is composed of carboxymethylcellulose/polyN-vinyl caprolactam composite gel embedded in urea and nitration inhibitor DMPP, polylactic acid/citrate-based polyester blend embedded in monoammonium phosphate and nanohydroxyapatite, and humic acid-graphene oxide complex of immobilized potassium sulfate and silicate bacteria, to achieve demand-oriented release of nitrogen, phosphorus and potassium.

Benefits of technology

It improves the utilization efficiency of nitrogen, phosphorus and potassium, meets the growth needs of strawberries at all stages, reduces fertilizer losses, improves fruit quality and yield, and reduces agricultural costs.

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Abstract

The invention provides a multi-stage environmental response type bio-fertilizer and application thereof in strawberry planting, the multi-stage environmental response type bio-fertilizer is a three-layer response type microcapsule, a shell layer is carboxymethyl cellulose / poly (N-vinylcaprolactam) composite gel embedded with urea and a nitrification inhibitor DMPP, and belongs to a humidity response type nitrogen release layer; the middle layer is a polylactic acid / citric acid-based polyester blend embedded with monoammonium phosphate and nano-hydroxyapatite, and belongs to a pH response type phosphorus release layer; a core layer is a humic acid-graphene oxide complex of immobilized potassium sulfate and silicate bacteria and belongs to a redox response type potassium release layer, so that'demand-oriented release 'of nitrogen, phosphorus and potassium is realized, growth demands of strawberries at all stages are fully matched, and the comprehensive fertilizer efficiency is improved.
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