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Preparation method and application of attapulgite clay modified compound fertilizer

A technology of attapulgite and compound fertilizer, which is applied in application, fertilization device, fertilizer mixture, etc., can solve the problems that no fertilizer has slow-release effect, etc., and achieve the goal of improving crop yield and quality, improving bulk density, and improving slow-release effect Effect

Pending Publication Date: 2022-07-12
白银丰宝农化科技有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] 2-Amino-5-mercapto-1,3,4-thiadiazole (CAS No.: 2349-67-9) is often used as a metal corrosion inhibitor, pesticide intermediate, and fungicide, but there is no information about its inhibitory effect on fertilizers. report on the release effect

Method used

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  • Preparation method and application of attapulgite clay modified compound fertilizer
  • Preparation method and application of attapulgite clay modified compound fertilizer
  • Preparation method and application of attapulgite clay modified compound fertilizer

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preparation example Construction

[0031] A preparation method of attapulgite clay modified compound fertilizer, comprising:

[0032] Provide compound fertilizer granules;

[0033] The modified attapulgite and the film-forming agent are mixed with water to prepare a coating slurry. The surface of the modified attapulgite is modified with 2-amino-5-mercapto-1, 3, 4-thiadiazole. stick stone;

[0034] The coating slurry is sprayed on the surface of the compound fertilizer particles and dried to obtain the attapulgite clay modified compound fertilizer.

[0035] In some embodiments, the compound fertilizer granules contain predominantly macronutrients.

[0036] In some embodiments, the compound fertilizer granules further comprise: humic acid, biomass charcoal, mixed bacterial agent, and selenoamino acid.

[0037] In some embodiments, in the attapulgite clay modified compound fertilizer, the total content of a large number of elements is more than 45wt%.

[0038] In some embodiments, N:P:K=15:15:15.

[0039] As...

Embodiment 1

[0104] Example 1 Taking the preparation of a special coated compound fertilizer for wheat as an example

[0105] raw material:

[0106] Mixed bacterial agent: 10 parts by weight of Bacillus subtilis, 5 parts by weight of Bacillus jelly, 5 parts by weight of Bacillus megaterium, 3 parts by weight of Bacillus coagulans, 15 parts by weight of Aspergillus oryzae, 10 parts by weight of nitrogen-fixing bacteria, licheniformis 5 parts by weight of Bacillus and 47 parts by weight of Bacillus mycoides were weighed, and each bacterial agent was mixed evenly for later use.

[0107] Bacillus subtilis, Bacillus jelly-like: Baoding Ruigu Biotechnology Co., Ltd.

[0108] Bacillus megaterium: Luoyang Hope Biotechnology Co., Ltd.

[0109] Bacillus coagulans: Shandong Nuojie Biotechnology Co., Ltd.

[0110] Aspergillus oryzae, Bacillus licheniformis, Bacillus mycoides: Ningbo Mingzhou Biotechnology Co., Ltd.

[0111] Brown nitrogen-fixing bacteria: Shanghai Huzheng Biotechnology Co., Ltd. ...

Embodiment 2

[0176] A coated compound fertilizer, the proportions are as follows: 25.0 parts of urea, 34.0 parts of monoammonium phosphate, 30.0 parts of potassium sulfate, 4 parts of dry humic acid, 3 parts of modified attapulgite ATP-3 (dry weight), Acrylamide 4 parts.

[0177] The preparation of modified attapulgite ATP-3 is the same as that of Example 1, except that the amount of 2-amino-5-mercapto-1,3,4-thiadiazole is 2wt% of the attapulgite mass.

[0178] The preparation process of compound fertilizer is as follows:

[0179] The urea, monoammonium phosphate, potassium sulfate and humic acid are placed in a constant temperature ball mill for high-speed ball milling to obtain a mixture with a particle size of not less than 800 meshes.

[0180] The mixed material is placed in a round pot granulator, and then sprayed with water to form small balls with a diameter of about 1 to 3 mm to obtain round granules.

[0181] The modified attapulgite, polyacrylamide and water were mixed, and a h...

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Abstract

The invention discloses a preparation method of an attapulgite clay modified compound fertilizer. The preparation method comprises the following steps: providing compound fertilizer particles; mixing the modified attapulgite and a film-forming agent with water to prepare coating slurry; coating slurry is sprayed on the surfaces of compound fertilizer particles, drying is carried out, the attapulgite clay modified compound fertilizer is obtained, and the surface of the modified attapulgite is modified by 2-amino-5-sulfydryl-1, 3, 4-thiadiazole attapulgite. Compared with unmodified attapulgite, the attapulgite clay modified compound fertilizer prepared from the modified attapulgite can significantly improve the slow release effect of fertilizer nutrients, improve the volume weight, porosity, water permeability, water holding capacity, water retention capacity and heavy metal ion passivation capacity of soil, and improve the crop yield and quality.

Description

technical field [0001] The invention belongs to the field of fertilizers, and in particular relates to a preparation method and application of attapulgite clay modified compound fertilizer. Background technique [0002] Attapulgite clay, also known as palygorskite, is a natural clay mineral with the advantages of large specific surface area, strong adsorption capacity, and good slow release. In recent years, it has been widely used in the preparation of compound fertilizers and soil conditioners. [0003] Patent document CN102020510A discloses a styrene-acrylic emulsion-paraffin-attapulgite composite coated slow-release nitrogen fertilizer, the composite coated slow-release nitrogen fertilizer is formed on the surface of urea with styrene-acrylic emulsion and attapulgite clay powder to form an inner layer coating, An outer coating is formed on the surface of the inner coating with paraffin. Patent document CN102001890A discloses a rosin-attapulgite-paraffin composite coated...

Claims

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Application Information

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IPC IPC(8): C05G3/40C05G3/80C05G5/12C05G5/30
CPCC05B7/00C05G3/40C05G3/80C05G5/12C05G5/30C05C9/00C05D1/02C05D9/00C05F11/02C05F11/08Y02P60/21
Inventor 张哲任宗礼曹锦周鹏鑫魏玉祥彭辉马国富
Owner 白银丰宝农化科技有限公司
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