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Acid soil conditioner and preparation method thereof

A technology for acidic soils and amendments, applied in soil conditioning materials, carbon preparation/purification, chemical instruments and methods, etc., can solve problems such as increasing agricultural production costs, consuming mineral resources, and aggravating soil compaction.

Inactive Publication Date: 2020-09-18
INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, long-term application of lime tends to aggravate soil compaction, which in turn causes soil re-acidification. While consuming mineral resources, it also increases the cost of agricultural production.

Method used

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  • Acid soil conditioner and preparation method thereof
  • Acid soil conditioner and preparation method thereof
  • Acid soil conditioner and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the preparation of acid soil conditioner

[0026] Carbonize rice husks under anaerobic conditions at 350°C for 3 hours, take them out and cool them, crush them, and pass through a 100-mesh sieve to obtain biochar powder. Weigh 100g of biomass charcoal powder, 200g of calcium magnesium phosphate fertilizer through a 60-mesh sieve, 200g of ammonium humate through a 200-mesh sieve, 200g of ammonium bicarbonate through a 60-mesh sieve, and 300g of bentonite through a 100-mesh sieve. Granulate in the disc granulator, the speed of the granulator is set at 60r / min, the inclination of the disc is 45°, the external heating plate is used for heating, the temperature is set at 50°C, the pressure is 0.5MPa high-pressure nozzle, and the mass The gelatin aqueous solution with a fraction of 1.5% is taken out after the particle size reaches 1-2 mm and stabilized, and dried at low temperature.

Embodiment 2

[0027] Embodiment 2: the preparation of acidic soil amendment:

[0028] Carbonize rice husks under anaerobic conditions at 350°C for 3 hours, take them out and cool them, crush them, and pass through a 100-mesh sieve to obtain biochar powder. Weigh 200g of biomass charcoal powder, 200g of calcium magnesium phosphate fertilizer through a 60-mesh sieve, 200g of ammonium humate through a 200-mesh sieve, 200g of ammonium bicarbonate through a 60-mesh sieve, and 200g of bentonite through a 100-mesh sieve. Granulate in the disc granulator, the speed of the granulator is set at 60r / min, the inclination of the disc is 45°, the external heating plate is used for heating, the temperature is set at 50°C, the pressure is 0.5MPa high-pressure nozzle, and the mass The gelatin aqueous solution with a fraction of 1.5% is taken out after the particle size reaches 1-2 mm and stabilized, and dried at low temperature.

Embodiment 3

[0029] Embodiment 3: the preparation of acid soil conditioner:

[0030] Carbonize rice husks under anaerobic conditions at 350°C for 3 hours, take them out and cool them, crush them, and pass through a 100-mesh sieve to obtain biochar powder. Weigh 300g of biomass charcoal powder, 200g of calcium magnesium phosphate fertilizer through a 60-mesh sieve, 200g of ammonium humate through a 200-mesh sieve, 200g of ammonium bicarbonate through a 60-mesh sieve, and 100g of bentonite through a 100-mesh sieve. Granulate in the disc granulator, the speed of the granulator is set at 60r / min, the inclination of the disc is 45°, the external heating plate is used for heating, the temperature is set at 50°C, the pressure is 0.5MPa high-pressure nozzle, and the mass The gelatin aqueous solution with a fraction of 1.5% is taken out after the particle size reaches 1-2 mm and stabilized, and dried at low temperature.

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Abstract

The invention provides a conditioner suitable for acid soil, and a preparation method thereof. The soil conditioner is prepared by taking biomass charcoal powder as an additive material, mixing the biomass charcoal powder with an alkaline fertilizer and then granulating. After the soil conditioner is applied to a field parcel with serious soil acidification, the pH and CEC of soil can be effectively improved, the porosity of the soil can be increased, the storage capacity of the soil to moisture and nutrients can be enhanced, and meanwhile, due to the addition of chemical fertilizers, nutrientsubstances required by growth can be provided for crops. The soil conditioner is simple in preparation method, convenient to apply and low in environmental risk, and is an efficient and environment-friendly soil conditioner.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a preparation method of an acidic soil conditioner and the acidic soil conditioner. Background technique [0002] Appropriate soil pH is an important guarantee for high crop yield, but in recent years, the problem of soil acidification caused by the irrational use of chemical fertilizers and pesticides has become very serious. Soil acidification will cause soil compaction, deterioration of soil physical and chemical properties, reduction of arability, and destruction of soil microbial community structure. [0003] For the improvement of acidic soil, the more common practice is to apply quicklime. Studies have shown that the application of quicklime can significantly increase soil pH and promote the growth of barley (Hu Min, Xiang Yongsheng, Lu Jianwei. The effect of lime application on the acidity of acidic soil and the growth of barley seedlings[J]. Chinese Agricultu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/80C05G5/12C05G3/00C09K17/40C01B32/05C09K101/00C09K109/00
CPCC05G3/80C05G5/12C05G3/00C09K17/40C05B13/02C01B32/05C09K2101/00C09K2109/00C05C3/00C05D9/00
Inventor 王家宝孙义祥袁嫚嫚邬刚
Owner INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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