Controlled-release fertilizer and application thereof in rice cultivation

A technology of controlled-release fertilizer and rice, which is applied in the field of controlled-release fertilizer and its application in rice cultivation, which can solve the problem of poor biodegradability of resin coating, high production cost of resin coated controlled-release fertilizer, and unreachable The effect of controlled release and other issues, to achieve the effect of low raw material cost, good nutrient release function, and improved biodegradability
CN112266302APending Publication Date: 2021-01-26INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
Publication Date
2021-01-26
Patent Text Reader

Abstract

The invention discloses a controlled-release fertilizer and application thereof in rice cultivation, and belongs to the field of agricultural production. The invention provides a controlled-release fertilizer. The controlled-release fertilizer comprises a core material, an inner coating film and an outer coating film; the core material is a fertilizer particle; the inner coating film is hydrogel;the outer coating film is modified epoxy resin; the modified epoxy resin is obtained by mixing epoxy resin, epoxy modified silicone oil and a curing agent; according to the controlled-release fertilizer, the exterior of the fertilizer is sequentially coated with hydrogel and modified epoxy resin, and rapid leakage of the fertilizer caused by cracking of an epoxy resin outer coating film of the controlled-release fertilizer can be prevented through arrangement of the hydrogel; epoxy resin modified by epoxy modified silicone oil is used as an outer coating film; due to the modification of the epoxy modified silicone oil, the flexibility of the epoxy resin is greatly improved, so that the modified epoxy resin is not easy to crack under the irradiation of sunlight when serving as an outer coating; and in conclusion, the controlled-release fertilizer has a very good nutrient release function due to the cooperative use of the hydrogel and the modified epoxy resin.
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Description

technical field

[0001] The invention relates to a controlled-release fertilizer and its application in rice cultivation, belonging to the technical field of agricultural production. Background technique

[0002] Controlled-release fertilizer is an advanced form of slow-release fertilizer. It mainly controls the release of nutrients through coating technology to achieve the goals of safety, long-term effect and high efficiency. It is the main direction of modern fertilizer development. The broadcast needs to wait.

[0003] Resin-coated controlled-release fertilizers are one of the more common controlled-release fertilizers. According to the properties of film materials, they can be divided into two categories: thermoplastic resin-coated controlled-release fertilizers and thermosetting resin-coated controlled-release fertilizers. Among them, the thermoplastic resin-coated controlled-release fertilizer is mainly obtained by first dissolving the coated resin with a solvent, and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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