Slow-release fertilizer and preparation method thereof

A slow-release fertilizer and slow-release agent technology, applied in inorganic fertilizers, ammonium salt fertilizers, nitrate fertilizers, etc., can solve the problems that slow-release fertilizers cannot meet the requirements of environmental protection and cannot be used continuously and efficiently, and reduce the number of fertilization operations. , high utilization rate, the effect of increasing commodity value

Inactive Publication Date: 2016-04-13
SHANGHAI FONDIN BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a sustainable, high-utilization slow-release fertilizer to solve the problem that the existing slow-release fertilizer cannot meet the requirements of environmental protection, and at the same time cannot be used continuously and efficiently

Method used

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  • Slow-release fertilizer and preparation method thereof
  • Slow-release fertilizer and preparation method thereof
  • Slow-release fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 prepares slow-release fertilizer by the formula shown in table 1

[0032] Table 1 Formulations of slow-release fertilizers

[0033] formula

[0034] The preparation method of the slow-release fertilizer: according to the formula in Table 1, take potassium nitrate, magnesium stearate and starch slurry, and pulverize; then mix evenly.

Embodiment 2

[0035] Embodiment 2 prepares slow-release fertilizer by the formula shown in table 2

[0036] Table 2 Formulations of slow-release fertilizers

[0037]

[0038] The preparation method of the slow-release fertilizer: according to the above formula, weigh potassium dihydrogen phosphate, urea, magnesium stearate, sodium carboxymethyl cellulose, potassium indole butyrate, and pulverize; then mix evenly.

Embodiment 3

[0039] Embodiment 3 prepares slow-release fertilizer by the formula shown in table 3

[0040] Table 3 Formulations of slow-release fertilizers

[0041]

[0042]

[0043] The preparation method of the slow-release fertilizer: according to the above formula, weigh potassium nitrate, ammonium dihydrogen phosphate, magnesium sulfate, talcum powder, hydrogenated vegetable oil, hydroxypropyl methylcellulose, sodium carboxymethylcellulose, and pulverize; then add Bright blue, just mix well.

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Abstract

The invention discloses slow-release fertilizer. The slow-release fertilizer comprises components in parts by weight as follows: 10-95 parts of plant nutrients, 1-8 parts of a lubricant and 0.1-8 parts of a slow-release agent. The invention further discloses a preparation method of the slow-release fertilizer. The method comprises steps as follows: according to the formula, weighing all the components; sequentially crushing and evenly mixing the components to obtain the slow-release fertilizer. After the slow-release fertilizer obtained with the method is applied to soil or matrix, fertilizer nutrients in the slow-release fertilizer are gradually dissolved and released for plants to absorb and utilize during watering each time, the fertilizer releases fertilizer nutrients continuously, the utilization rate of the fertilizer is high, and the application range is wide.

Description

technical field [0001] The invention belongs to the field of slow-release fertilizers, and in particular relates to a slow-release fertilizer and a preparation method thereof. Background technique [0002] Slow-release fertilizer tablets are fertilizers made by chemical or physical methods that can delay the release rate of nutrients and can be continuously absorbed and utilized by plants. The degree of control enables the nutrients in the fertilizer to meet the different needs of the various growth stages of the crops. [0003] At present, there are three main types of fertilizer slow-release tablets: [0004] 1. Compounds that are insoluble in water, such as calcium hydrogen phosphate. The production of such products is relatively difficult. Only some nutrients necessary for plants can produce insoluble compounds in water. Moreover, such products are easy to agglomerate and inconvenient to use. Long-term use will easily cause soil compaction and damage the ecological bal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05C3/00C05C5/02C05C9/00C05D5/00C05D9/00C05D9/02
Inventor 张忠池项金霞陈巍王保娜丁辉董雪
Owner SHANGHAI FONDIN BIO TECH
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