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Slow-release oxidizing agent taking calcium peroxide as substrate and attapulgite as envelope, and preparation method

A technology of attapulgite and calcium peroxide, which is applied in the field of the invention, can solve the problems of inability to meet the demand for oxygen, short oxygen release time, etc., to solve the problem of oxygen release time, prolong the oxygen release time, and have broad prospects for promotion and application. Effect

Inactive Publication Date: 2016-08-03
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the release time of calcium peroxide in the gleization paddy field is short, which cannot meet the demand for oxygen in the middle and late stages of rice growth.

Method used

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  • Slow-release oxidizing agent taking calcium peroxide as substrate and attapulgite as envelope, and preparation method
  • Slow-release oxidizing agent taking calcium peroxide as substrate and attapulgite as envelope, and preparation method
  • Slow-release oxidizing agent taking calcium peroxide as substrate and attapulgite as envelope, and preparation method

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Embodiment 1

[0038] A slow-release oxidant with calcium peroxide as the matrix attapulgite as the coating, which is made of the following raw materials in parts by weight:

[0039]

[0040] A kind of preparation method that takes calcium peroxide as matrix attapulgite as coating slow-release oxidant, comprises the following steps:

[0041] A. Granulation: Use 1kg60% calcium peroxide raw powder to form small particles with a particle size of 0.4 or 0.5 or 0.6mm; put all the small particles into the disc granulator, take 4kg of calcium peroxide raw powder and put it into the vibration feed In the machine, the powder is fed at a constant speed of 100g / min to form particles with a particle size of about 4mm.

[0042] B. Coating: keep the parameters of the disc granulator unchanged, put all the calcium peroxide particles in step A into the granulation disc, weigh 222.2g of attapulgite and put it into the vibrating feeder at a rate of 10g / min Put the powder into the disc at a constant speed ...

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Abstract

The invention discloses a slow-release oxidant with calcium peroxide as the matrix attapulgite as the coating and a preparation method. It is prepared by 60% calcium peroxide, binder and attapulgite. The steps are: A. Mix 60% calcium peroxide with binder and attapulgite to granulate evenly, and the particle size is 3-5 mm; B. Based on the mass after granulation in step A, the amount of attapulgite for coating is prepared; the granules in A are coated with the raw materials in B, and the slow-release oxidant is obtained after drying. The formula is reasonable, the method is easy to operate, and the operation is simple, which can effectively solve the problem of calcium peroxide releasing oxygen in the gleization paddy field and improve the growth environment of rice in the gleization paddy field. On the one hand, it has incomparable superiority than ordinary oxidants. After being coated with attapulgite, the oxygen release time is as long as 91 days, which is 49 days longer than that of calcium peroxide powder alone, which is doubled. The prospect of promotion and application is broad.

Description

technical field [0001] The invention belongs to the fields of agricultural ecology, soil improvement and plant nutrition regulation, and more specifically relates to a slow-release oxidant with calcium peroxide as the substrate and attapulgite as the coating, which can effectively reduce the gleization of paddy fields Toxic reducing substances, can supply oxygen for rice, can also improve the pH of acidic gleization paddy field soil, improve the growth environment of gleization paddy rice, and also involve a kind of attapulgite with calcium peroxide as the substrate as the coating The preparation method of the slow-release oxidant, the slow-release oxidant prepared by the method is suitable for the improvement of the gleization rice field when the rice is planted in the vast gleization rice area. Background technique [0002] The gleogenic paddy field is the most common low-yielding field in southern my country, widely distributed in the plain lake area and hilly ridges, acc...

Claims

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Application Information

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IPC IPC(8): C09K17/50C09K101/00C09K109/00
CPCC09K17/50C09K2101/00C09K2109/00
Inventor 董春华罗尊长苏以荣褚飞李万民陈香碧胡亚军洪曦
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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