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Special slow release fertilizer for Chinese cabbage and preparation method thereof

A slow-release fertilizer, cabbage technology, applied in the application, nitrogen fertilizer, phosphate fertilizer and other directions, can solve the problems of secondary pollution, difficult treatment, large amount, etc., to achieve the effect of increasing the content of heavy metals, reducing toxicity and solubility, and improving the planting environment

Inactive Publication Date: 2017-05-10
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of chemical method, biological method, phytoremediation method and incineration method are: removing heavy metals from soil not only requires a lot of financial and material resources, but also it is obviously unrealistic to adopt this method in the face of soil, and those who absorb and enrich heavy metals Plants are also difficult to further process, and may cause secondary pollution problems

Method used

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  • Special slow release fertilizer for Chinese cabbage and preparation method thereof
  • Special slow release fertilizer for Chinese cabbage and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Formula: 12 parts of potassium nitrate, 10 parts of ammonium sulfate, 40 parts of urea, 4 parts of superphosphate, 16 parts of potassium dihydrogen phosphate, 6 parts of additives, 8 parts of reaction aids, 20 parts of modified montmorillonite, polylactic acid 50 parts, 50 parts polyvinyl alcohol.

[0023] Preparation method of modified montmorillonite:

[0024] (1) Crushing: Use a ball mill to grind the montmorillonite into fine powder with a fineness of ≤0.04mm to obtain montmorillonite powder;

[0025] (2) Activation: send the montmorillonite powder into an ultrasonic device, treat it at an ultrasonic power of 600w for 20 minutes, and then send it to a calcining tower for calcination at a high temperature of 300°C for 90 minutes. After cooling, add the montmorillonite powder to absolute ethanol and ultrasonic After 10 minutes of dispersion, centrifuge, repeat ultrasonic dispersion and centrifugation 2 times, then add distilled water, ultrasonic dispersion for 10 minutes, t...

Embodiment 2

[0029] Formula: 18 parts of potassium nitrate, 16 parts of ammonium sulfate, 60 parts of urea, 10 parts of superphosphate, 22 parts of potassium dihydrogen phosphate, 12 parts of additives, 14 parts of reaction aids, 26 parts of modified montmorillonite, polylactic acid 56 parts, 56 parts of polyvinyl alcohol.

[0030] Preparation method of modified montmorillonite:

[0031] (1) Crushing: Use a ball mill to grind the montmorillonite into fine powder with a fineness of ≤0.04mm to obtain montmorillonite powder;

[0032] (2) Activation: send the montmorillonite powder into an ultrasonic device, treat it with an ultrasonic power of 1000w for 40 minutes, and then send it to a calcining tower for calcination at a high temperature of 600°C for 120 minutes. After cooling, add the montmorillonite powder to absolute ethanol and ultrasonic After 18 minutes of dispersion, centrifuge, repeat ultrasonic dispersion and centrifugation 3 times, then add distilled water, ultrasonic dispersion for 15 ...

Embodiment 3

[0036] Formula: 14 parts of potassium nitrate, 12 parts of ammonium sulfate, 45 parts of urea, 6 parts of superphosphate, 18 parts of potassium dihydrogen phosphate, 8 parts of admixtures, 10 parts of reaction aids, 22 parts of modified montmorillonite, poly 52 parts of lactic acid and 52 parts of polyvinyl alcohol.

[0037] Preparation method of modified montmorillonite:

[0038] (1) Crushing: Use a ball mill to grind the montmorillonite into fine powder with a fineness of ≤0.04mm to obtain montmorillonite powder;

[0039] (2) Activation: send the montmorillonite powder into an ultrasonic device, treat it at an ultrasonic power of 600w for 20 minutes, and then send it into a calcining tower for calcination at a high temperature of 300-℃ for 90 minutes. After cooling, add the montmorillonite powder to absolute ethanol. After ultrasonic dispersion for 10 minutes, centrifugal separation, repeat ultrasonic dispersion and centrifugation 2 times, then add distilled water, ultrasonic disp...

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Abstract

The invention discloses a special slow release fertilizer for Chinese cabbage and a preparation method thereof. The special slow release fertilizer is prepared from the following raw materials in parts by weight: 12 to 18 parts of potassium nitrate, 10 to 16 parts of ammonium sulfate, 40 to 60 parts of urea, 4 to 10 parts of calcium superphosphate, 16 to 22 parts of potassium dihydrogen phosphate, 6 to 12 parts of an additive, 8 to 14 parts of a reaction auxiliary agent, 20 to 26 parts of modified montmorillonite, 50 to 56 parts of polylactic acid and 50 to 56 parts of polyvinyl alcohol. The special slow release fertilizer for the Chinese cabbage provided by the invention contains a variety of nutrient components, and can meet the needs of the Chinese cabbage for various nutrients; meanwhile, due to the addition of the raw materials like thiosulfuric acid substances, a plant growth regulator and a herbicide in the slow release fertilizer, the slow release fertilizer can effectively solve the problems of soil heavy metal pollution and toxic and harmful substance residue in the process of cultivation of the Chinese cabbage, and can obtain the advantages of improving planting environment, inhibiting weed growth and enhancing the growth vigor of the Chinese cabbage.

Description

Technical field [0001] The invention relates to the technical field of fertilizer preparation, in particular to a slow-release fertilizer special for cabbage and a preparation method thereof. Background technique [0002] Cabbage, a biennial herb, 40-60 cm high, often glabrous throughout the plant, sometimes with a few bristles on the midrib under the leaf. Native to northern China, it is a leafy vegetable of the genus Brassica of the cruciferous family, usually refers to Chinese cabbage; it also includes Chinese cabbage and cabbage, which is a cultivar of cabbage, namely "cabbage" or "cabbage". Introduced to the south, cultivated all over the north and south. It was introduced to Japan, Europe and America in the 19th century. There are many types of cabbage. The northern Chinese cabbage includes Shandong Jiaozhou Chinese cabbage, Beijing Qingbai, Tianjin Qingmaye Chinese cabbage, Northeast Chinese cabbage, Yutian Chinese cabbage, and Shanxi Yangcheng big raw edge. Cabbage is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B1/02C05G3/00C05G3/80C05G5/37C05B7/00C05C3/00C05C5/02C05C9/00
Inventor 陈肖虎鲁圣军黎志英刘利金会心黄碧芳
Owner GUIZHOU UNIV