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Application of Sanzan Gum in Slow and Controlled Release Fertilizer, Membrane Material of Slow and Controlled Release Fertilizer, Coated Slow and Controlled Release Fertilizer Based on Sanzan Gum and Preparation Method

A technology of slow and controlled release fertilizer and Sanzan glue, applied in the application, nitrogen fertilizer, fertilization device and other directions, can solve the problems of high cost, reduce water solubility of film material, poor slow release effect, etc., and achieve low cost and good slow release effect. , the effect of improving water holding capacity

Active Publication Date: 2021-05-25
TIANJIN AGRICULTURE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies in the prior art, especially when using natural high molecular polymers as slow-release materials, the problems of high cost and poor slow-release effect, overcome the deficiencies in the prior art, and provide Sanzan gum in Application of slow and controlled release fertilizer, film material of slow and controlled release fertilizer, coated slow and controlled release fertilizer based on Sanzan gum and its preparation method, the slow and controlled release fertilizer uses low-cost Sanzan gum as the slow release material, through Compounding and cross-linking modification form an irreversible gel structure, which reduces the water solubility of the membrane material and has a good slow-release effect. The slow-release fertilizer is environmentally friendly, has good fertilizer nutrient control-release effect, and has a simple preparation process

Method used

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  • Application of Sanzan Gum in Slow and Controlled Release Fertilizer, Membrane Material of Slow and Controlled Release Fertilizer, Coated Slow and Controlled Release Fertilizer Based on Sanzan Gum and Preparation Method
  • Application of Sanzan Gum in Slow and Controlled Release Fertilizer, Membrane Material of Slow and Controlled Release Fertilizer, Coated Slow and Controlled Release Fertilizer Based on Sanzan Gum and Preparation Method
  • Application of Sanzan Gum in Slow and Controlled Release Fertilizer, Membrane Material of Slow and Controlled Release Fertilizer, Coated Slow and Controlled Release Fertilizer Based on Sanzan Gum and Preparation Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A coated slow-controlled release fertilizer based on Sanzan gum, the coated slow-controlled release fertilizer includes granular fertilizer and Sanzan gum compound coating material.

[0039] The above-mentioned preparation method of the coated slow-controlled release fertilizer based on Sanzan gum, the steps are as follows:

[0040]Add Sanzan gum to water at a mass volume percentage of 1.2%, stir for 12 hours, heat to 90°C after fully dissolving, and keep the temperature at this temperature for 30 minutes, when the solution is naturally cooled to 65°C, add pentasodium tripolyphosphate and pentadiene The mass ratio of aldehyde, Sanzan gum: pentasodium tripolyphosphate: glutaraldehyde is 10:1:0.2, adjust the pH to about 4.5, stir and mix well, react at 65°C for 30min, and adjust the pH to 7.0-7.5. Add cationic starch into water at a mass volume percentage of 1.0%, stir and boil, and cool to 65°C, mix the cross-linked Sanzan gum solution and cationic starch solution at a v...

Embodiment 2

[0045] A coated slow-controlled release fertilizer based on Sanzan gum, the coated slow-controlled release fertilizer includes granular fertilizer and Sanzan gum compound coating material.

[0046] The above-mentioned preparation method of the coated slow-controlled release fertilizer based on Sanzan gum, the steps are as follows:

[0047] Ethyl cellulose was dissolved in ethanol to make a solution with a mass volume percentage of 1.5%. Add Sanzan Gum to water at a mass volume percentage of 1.0%, stir for 12 hours, heat to 90°C after fully dissolving, and keep the temperature at this temperature for 30 minutes. When the solution is naturally cooled to 65°C, add pentasodium tripolyphosphate and pentamethylene diphosphate The mass ratio of aldehyde, Sanzan gum: pentasodium tripolyphosphate: glutaraldehyde is 10:1:0.2, adjust the pH to about 4.5, stir and mix well, react at 65°C for 30min, and adjust the pH to 7.0-7.5. Add cationic starch into water at a mass volume percentage o...

Embodiment 3

[0052] A coated slow-controlled release fertilizer based on Sanzan gum, the coated slow-controlled release fertilizer includes granular fertilizer and Sanzan gum compound coating material.

[0053] The above-mentioned preparation method of the coated slow-controlled release fertilizer based on Sanzan gum, the steps are as follows:

[0054] Ethyl cellulose was dissolved in ethanol to make a solution with a mass volume percentage of 1.5%. Add Sanzan gum to water at a mass volume percentage of 1.0%, stir for 12 hours, heat to 90°C after fully dissolving, and keep the temperature at this temperature for 30 minutes, when the solution is naturally cooled to 65°C, add calcium chloride and glutaraldehyde, The mass ratio of Sanzan gum: calcium chloride: glutaraldehyde is 10:0.5:0.1, adjust the pH to about 4.5, stir and mix well, react at 65°C for 30 minutes, and adjust the pH to 7.0-7.5. Add cationic starch into water at a mass volume percentage of 0.8%, stir and boil, and cool to 65°...

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Abstract

The invention relates to an application of Sanzan gum in slow-controlled release fertilizer, a film material of slow-controlled release fertilizer, a coated slow-controlled release fertilizer based on Sanzan gum and a preparation method thereof. The slow-release fertilizer of the present invention uses low-cost Sanzan gum as the slow-release material, forms an irreversible gel structure through compounding and cross-linking modification, reduces the water solubility of the membrane material, has a good slow-release effect, and improves the fertilizer nutrients The controlled-release effect is good, and the preparation process is simple. The film material of the slow-controlled release fertilizer can be completely degraded in soil, and is an environment-friendly fertilizer.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and relates to slow-release fertilizers, in particular to an application of Sanzan gum in slow-controlled release fertilizers, a membrane material for slow-controlled release fertilizers, and a coated slow-control-release fertilizer based on Sanzan gum and its preparation method. Background technique [0002] The emergence of slow and controlled release fertilizers overcomes the problems of low utilization rate and environmental pollution of traditional chemical fertilizers, and has the advantages of saving fertilizer and labor, increasing production and income, and improving the ecological environment. Coated slow-release materials are the key technology of slow-release fertilizers, which can be divided into two categories: inorganic substances and organic substances. Synthetic and synthetic three. At present, most slow-release fertilizers have problems such as complicated processing techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/40C05G3/80C05G5/30C05G5/12C09D199/00C09D103/08C09D7/61C09D7/63
CPCC05C9/00C05G3/00C09D199/00C09D7/61C09D7/63C05G3/80C05G5/30C05G5/37C08L3/08C08K3/32C08K5/098C08K3/16C08K5/07C05F11/00C05F11/08
Inventor 黄海东李晓雁金玉祁文华
Owner TIANJIN AGRICULTURE COLLEGE
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