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Biochar fertilizer and preparation method thereof

A biochar, potash fertilizer technology, applied in nitrogen fertilizer, potash fertilizer, phosphate fertilizer and other directions, can solve the problems of less microporous structure, low specific surface area, less nutrient elements, etc., and achieve high adsorption performance, large specific surface area, and increase the effect of organic matter content.

Inactive Publication Date: 2017-01-11
刘建伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although biochar can be used as a fertilizer, it has less microporous structure, lower specific surface area, and retains less nutrients including trace elements, so it is generally necessary to add other fertilizers when using it

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of biochar fertilizer, is made from the raw material of following weight part:

[0023] Biochar 60kg, compound fertilizer 20kg, additive 15kg.

[0024] The biochar is obtained by mixing corn stalks, wheat straws and rice straws in a mass ratio of 1:1:1, drying in the sun until the moisture content is 20%, and then extruding and granulating and carbonizing in a carbonization furnace. to make.

[0025] The compound fertilizer comprises 10kg of nitrogen fertilizer, 5kg of phosphate fertilizer and 5kg of potash fertilizer.

[0026] The nitrogen fertilizer includes urea and ammonium nitrate.

[0027] The phosphate fertilizer includes ammonium polyphosphate.

[0028] The potassium fertilizer includes potassium dihydrogen phosphate and potassium sulfate.

[0029] The additive is obtained by dissolving plant ash in water, adjusting the pH to 8.2 with ammonia water, filtering, and freeze-drying.

[0030] The preparation method of above-mentioned a kind of biochar fer...

Embodiment 2

[0036] A kind of biochar fertilizer, is made from the raw material of following weight part:

[0037] Biochar 70kg, compound fertilizer 35kg, additive 20.

[0038] The biochar is obtained by mixing corn stalks, wheat straws and rice straws in a mass ratio of 1:1:1, drying in the sun until the water content is 25%, extruding granulation and carbonizing in a carbonization furnace. to make.

[0039] The compound fertilizer comprises 20kg of nitrogen fertilizer, 8kg of phosphate fertilizer and 8kg of potash fertilizer.

[0040] The nitrogen fertilizer includes ammonium sulfate and ammonium chloride.

[0041] The phosphate fertilizer includes calcium magnesium phosphate fertilizer and nitrophosphate fertilizer.

[0042] The potassium fertilizer includes potassium chloride and potassium nitrate.

[0043] The additive is obtained by dissolving plant ash in water, adjusting the pH to 8.3 with ammonia water, filtering, and freeze-drying.

[0044] The preparation method of above-me...

Embodiment 3

[0050] A kind of biochar fertilizer, is made from the raw material of following weight part:

[0051] Biochar 80kg, compound fertilizer 50kg, additive 25kg.

[0052] The biochar is obtained by mixing corn stalks, wheat straws and rice straws in a mass ratio of 1:1:1, drying in the sun until the moisture content is 30%, extruding granulation and carbonizing in a carbonization furnace. to make.

[0053]The compound fertilizer comprises 30kg of nitrogen fertilizer, 10kg of phosphate fertilizer and 10kg of potash fertilizer.

[0054] The nitrogen fertilizer includes ammonium polyphosphate and ammonium bicarbonate.

[0055] The phosphate fertilizer includes potassium dihydrogen phosphate and calcium magnesium phosphate fertilizer.

[0056] The potassium fertilizer includes potassium sulfate and potassium chloride.

[0057] The additive is obtained by dissolving plant ash in water, adjusting the pH to 8.5 with ammonia water, filtering, and freeze-drying.

[0058] The preparatio...

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Abstract

The invention discloses a biochar fertilizer which is prepared from the following raw materials in parts by weight: 60-80 parts of biochar, 20-50 parts of compound fertilizers and 15-25 parts of additives. According to the biochar fertilizer disclosed by the invention, crop straws serve as raw material components, the adopted raw straws are low in cost and highly available in source, are subjected to dehydration and deoxygenation treatment and ground into biochar powder in a high temperature carbonization manner, the carbonization effect is good, the char content is 25% or higher, the carbonization rate of the straws is effectively improved, and the char fertilizer is high in yield, good in fertilization effect and capable of passivating heavy metals in soil and improving the activity of microbes in the soil. Moreover, the fertilizer has large specific surface area, and the content of organic matters in the soil is improved. As a low-cost non-chemical fertilizer, the product disclosed by the invention can provide a yield guarantee for organic agriculture and green agriculture, and the preparation method is simple, controllable and easy to implement.

Description

technical field [0001] The invention relates to the fields of high-value comprehensive utilization of biomass resources and environmental pollution control, in particular to a biochar fertilizer and a preparation method thereof. Background technique [0002] No matter in the fields of food crops or commercial crops, fertilization has been used for a long time to improve crop yield and quality. From the earliest application of farm organic fertilizers to the application of inorganic fertilizers, and then to the application of organic-inorganic compound fertilizers. Fertilizer type, fertilization amount and ratio have a great impact on the yield and quality of food crops or economic crops. Although traditional fertilizers, especially organic-inorganic compound fertilizers, have played a good role in increasing crop yields. However, traditional fertilizers have an unreasonable ratio of ingredients and nutrients, which can hardly restore soil fertility, improve soil structure,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05B7/00C05G3/80C05C1/00C05C9/00C05D1/00C05D1/02
Inventor 刘建伟
Owner 刘建伟
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