Novel coated slow-release fertilizer and preparation method thereof

A new type of slow-release coating technology, applied in layered/coated fertilizers, nitrogen fertilizers, potash fertilizers, etc., can solve the problems of low sugar content, harm to workers' health, short fertilizer effect period, etc., to enhance impact resistance and resistance. Abrasiveness, good antibacterial effect, the effect of improving physical and chemical structure

Inactive Publication Date: 2018-11-27
HFEI PUBANG AGRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But most of the slow-release chemical fertilizer products in the prior art have the following deficiencies: 1. The coating material cannot be degraded, such as film materials such as petroleum base, epoxy resin, polyethylene, polypropylene, polyvinyl chloride, etc., thereby remaining in the soil in, causing environmental pollution
2. The coating material is poisonous, which is harmful to the health of workers during the production process
3. The cost of coating materials is too high to be popularized
4. The sustained-release period of the film material is too short and the effect is not good
[0004] Chinese patent CN102731214B announces a sugarcane slow-release fertilizer production process, which adopts the fertilizer-wrapped fertilizer process to pre

Method used

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  • Novel coated slow-release fertilizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] A new type of coated slow-release fertilizer, comprising a base fertilizer and a slow-release layer wrapped outside the base fertilizer,

[0040] The base fertilizer includes the following raw materials in parts by weight: 20 parts of urea, 6 parts of superphosphate, 8 parts of potassium chloride, 0.3 parts of trace element additives and 2 parts of antibacterial additives;

[0041] The slow-release layer includes the following raw materials in parts by weight: 2 parts of expanded perlite, 5 parts of polyvinyl alcohol, 1 part of β-cyclodextrin, 2 parts of epoxy linseed oil, 3 parts of modified diatomite, and 0.2 part of eucalyptus oil And polyacrylamide 7 parts.

[0042] The antibacterial additive comprises the following raw materials in parts by weight: 6 parts of cork cork, 5 parts of pyrethrum, 5 parts of wolfbane, 3-8 parts of andrographis paniculata, 7 parts of pomegranate peel and 2 parts of clove.

[0043] The preparation method of modified diatomite is as follow...

Embodiment 2

[0063] A new type of coated slow-release fertilizer, comprising a base fertilizer and a slow-release layer wrapped outside the base fertilizer,

[0064] The base fertilizer includes the following raw materials in parts by weight: 30 parts of urea, 12 parts of superphosphate, 12 parts of potassium chloride, 0.8 parts of trace element additives and 5 parts of antibacterial additives;

[0065] The sustained-release layer includes the following raw materials in parts by weight: 5 parts of expanded perlite, 12 parts of polyvinyl alcohol, 3 parts of β-cyclodextrin, 6 parts of epoxy linseed oil, 7 parts of modified diatomite, and 0.7 parts of eucalyptus oil And polyacrylamide 16 parts.

[0066] The antibacterial additive includes the following raw materials in parts by weight: 15 parts of cork cork, 9 parts of pyrethrum, 12 parts of wolfbane, 8 parts of andrographis paniculata, 15 parts of pomegranate peel and 6 parts of clove.

[0067] The preparation method of modified diatomite i...

Embodiment 3

[0087] A new type of coated slow-release fertilizer, comprising a base fertilizer and a slow-release layer wrapped outside the base fertilizer,

[0088] The base fertilizer includes the following raw materials in parts by weight: 26 parts of urea, 10 parts of superphosphate, 11 parts of potassium chloride, 0.5 parts of trace element additives and 3.6 parts of antibacterial additives;

[0089] The sustained-release layer includes the following raw materials in parts by weight: 3 parts of expanded perlite, 9 parts of polyvinyl alcohol, 1.8 parts of β-cyclodextrin, 4 parts of epoxy linseed oil, 5 parts of modified diatomite, and 0.5 part of eucalyptus oil And polyacrylamide 11 parts.

[0090] The antibacterial additive includes the following raw materials in parts by weight: 12 parts of cork cork, 7 parts of pyrethrum, 9 parts of chamaejasma chamaejasma, 6 parts of andrographis paniculata, 12 parts of pomegranate peel and 4 parts of clove.

[0091] The preparation method of modi...

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Abstract

The invention relates to the field of slow-release fertilizers and discloses a novel coated slow-release fertilizer and a preparation method thereof. The novel coated slow-release fertilizer comprisesa base fertilizer and a slow-release layer, and the base fertilizer is externally coated with the slow-release layer. The base fertilizer is prepared from, by weight, 20-30 parts of urea, 6-12 partsof calcium superphosphate, 8-12 parts of potassium chloride, 0.3-0.8 part of trace element auxiliary agents and 2-5 parts of an antibacterial additive. The slow-release layer is prepared from, by weight, 2-5 parts of expanded perlite, 5-12 parts of polyvinyl alcohol, 1-3 parts of beta-cyclodextrin, 2-6 parts of epoxy linseed oil, 3-7 parts of modified diatomite, 0.2-0.7 part of eucalyptus oil and7-16 parts of polyacrylamide. By material synergistic effects of the base fertilizer and the slow-release layer, the slow-release fertilizer has advantages of long fertilizer efficiency lasting periodand great slow-release effects and is further excellent in water retention property and capable of improving a soil physiochemical structure, and a material of the slow-release layer is easily degradable and environmentally friendly.

Description

technical field [0001] The invention relates to the field of slow-release fertilizers, in particular to a novel coated slow-release fertilizer and a preparation method thereof. Background technique [0002] At present, slow-release chemical fertilizers are the development direction of agricultural chemical fertilizers in the world. But most of the slow-release chemical fertilizer products in the prior art have the following deficiencies: 1. The coating material cannot be degraded, such as film materials such as petroleum base, epoxy resin, polyethylene, polypropylene, polyvinyl chloride, etc., thereby remaining in the soil , causing environmental pollution. 2. The coating material is poisonous, which is harmful to the health of workers during the production process. 3. The cost of coating materials is too high to be popularized. 4. The slow-release period of the film material is too short, and the effect is not good. Therefore, the development of coated degradable slow-r...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
CPCC05B1/02C05G3/00C05G3/80C05G3/90C05G5/37C05C9/00C05D1/02C05F11/00
Inventor 朱邵峰
Owner HFEI PUBANG AGRI TECH CO LTD
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