Biochar-based sand modifier and preparation method thereof

A technology of biochar and improver, applied in fertilizer mixture, application, organic fertilizer and other directions, can solve the problems of sandy soil can not be effectively used, can not improve the fertilization effect of sandy soil, can not maintain sandy soil moisture and other problems, and achieve enhanced water holding capacity. , the effect of improving acidic soil and simple preparation method

Inactive Publication Date: 2017-07-14
INNER MONGOLIA UNIV FOR THE NATITIES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The sandy soil amendments in the prior art cannot improve the soil structure of the sandy soil, the carbon sequestration effect is not good, the moisture in the sandy soil cannot be maintained, the fertilization effect of the sandy soil cannot be improved, and the sandy soil cannot be effectively utilized

Method used

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  • Biochar-based sand modifier and preparation method thereof
  • Biochar-based sand modifier and preparation method thereof
  • Biochar-based sand modifier and preparation method thereof

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preparation example Construction

[0023] The preparation method of the above-mentioned biochar-based sand improvement agent, according to parts by weight, crushes 30-60 parts of biochar and mixes with 40-50 parts of urea, 3-8 parts of superphosphate, 4-10 parts of potassium chloride and bentonite 2-6 parts of clay-like minerals are mixed to form a premix, granulated and dried.

[0024] Biochar is agricultural organic waste or animal manure, which is in the form of long strips or blocks, and needs to be crushed or cut to facilitate the preparation of subsequent modifiers. However, urea, superphosphate, potassium chloride and bentonite clay minerals have small particle sizes and do not need to be pulverized, which can avoid energy waste. Mixing all the components of the biochar-based sand improvement agent makes the biochar-based sand improvement agent evenly fertilized, the crops grow more luxuriantly, and the lack of certain components of the crops is avoided.

[0025] Granulation can facilitate the packaging...

Embodiment 1

[0032] 30kg of biochar was crushed, mixed with 40kg of nitrogen fertilizer, 3kg of phosphate fertilizer, 4kg of potash fertilizer and 2kg of bentonite clay minerals to form a premix, and granulated for 25min at a speed of 35r / min. The mixture was sprayed with water three times, with an interval of 5 minutes each time. After the granulation was completed, it was screened through a 10-mesh sieve, a 20-mesh sieve and a 40-mesh sieve, and air-dried at 35°C for 10 hours to obtain a biochar-based sand improvement agent.

Embodiment 2

[0034] 60kg of animal manure was crushed, mixed with 50kg of urea, 8kg of superphosphate, 10kg of potassium chloride and 6kg of bentonite clay minerals to form a premix, and granulated at a speed of 45r / min for 35min. At the same time, the premix was sprayed with water three times, with an interval of 8 minutes each time. After the granulation was completed, it was screened through a 10-mesh sieve, a 20-mesh sieve and a 40-mesh sieve, and air-dried at 45°C for 14 hours to obtain biochar-based sand. ground improver.

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Abstract

The invention provides a biochar-based sand modifier and a preparation method thereof and belongs to the technical field of compound fertilizer. The biochar-based sand modifier comprises biochar, nitrogen fertilizer, phosphorous fertilizer, potassium fertilizer and bentonite clay minerals. The preparation method comprises the following steps: smashing the biochar, then mixing with the nitrogen fertilizer, phosphorous fertilizer, potassium fertilizer and bentonite to form premix, granulating, and drying, so that the biochar-based sand modifier is obtained. The biochar-based sand modifier obtained by adopting the preparation method has the advantages that the biochar can improve a sand soil structure and has carbon fixation effect, release of fertilizer in soil can be delayed and continuous fertilization effect is achieved when the biochar is combined with the other components, the soil structure can be improved at the same time, and product quality can be improved.

Description

technical field [0001] The invention relates to the technical field of compound fertilizers, in particular to a biochar-based sand improvement agent and a preparation method thereof. Background technique [0002] Aeolian soil is a type of soil in windy and sandy areas, which can be divided into three types: mobile aeolian soil, semi-fixed aeolian soil and fixed aeolian soil. In my country, aeolian sandy soil is mainly distributed in arid and semi-arid areas in the north, including vast areas from grasslands, semi-deserts to deserts. Aeolian sandy soil has low fertility, poor structure, and is prone to water and fertilizer. It is a low-yielding soil type. To obtain high and stable yields, it is necessary to improve the aeolian sandy soil and apply more fertilizers, especially organic fertilizers. [0003] The sandy soil amendments in the prior art cannot improve the soil structure of the sandy soil, the carbon sequestration effect is not good, the moisture in the sandy soil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05B1/02C05D1/00C05G3/80C05G5/12C05D9/00C05C9/00C05D1/02C05F3/00C05F11/00
Inventor 郑庆福杨恒山
Owner INNER MONGOLIA UNIV FOR THE NATITIES
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