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Method for preparing organic agriculture biochar compound fertilizer

A technology of biochar and compound fertilizer, applied in the preparation of organic fertilizer, organic fertilizer, agriculture, etc.

Active Publication Date: 2014-06-04
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been some reports on carbon-based slow-release fertilizers or carbon-based compound fertilizers in the Chinese patent inquiry system, these carbon-based fertilizers all contain chemically synthesized substances restricted by the Chinese National Standard for Organic Products (GB / T 19630.1-19630.4-2011). Cannot be used in organic fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Crack the air-dried corn stalks in a carbonization furnace at 500°C for 4 hours, collect the biochar after cooling, pass the biochar through a 60-mesh sieve after crushing, and wash the biochar for later use;

[0028] 2) Mix 15 parts by weight of biochar with 71 parts by weight of chicken manure (dry weight) and 5 parts by weight of phosphate rock powder, then add EM bacteria liquid, add water to control the moisture content to 40%, stir and mix well, pour it into the fermentation tank, and seal it Fermentation for 12 days; the EM bacterial liquid is obtained by diluting the EM stock solution of "Baiyibao" 50 times with water, and the amount of EM bacterial liquid added is 100 L of EM bacterial liquid per ton of material;

[0029] 3) Send the decomposed fermented product into a drum air dryer for drying at a drying temperature of 60-80°C until the water content is 20%;

[0030] 4) Mix the dried fermented product with 4 parts by weight of potassium mineral powder and ...

Embodiment 2

[0035] 1) Pyrolyze the air-dried chicken manure in a carbonization furnace at 450°C for 3 hours, collect the biochar after cooling, pass the biochar through a 60-mesh sieve after being crushed, and wash the biochar for later use;

[0036] 2) Mix 20 parts by weight of biochar with 70 parts by weight of chicken manure (dry weight) and 4 parts by weight of phosphate rock powder, then add EM bacteria liquid, add water to control the moisture content to 45%, stir and mix well, pour into the fermentation tank, and seal it Fermentation for 10 days; the EM bacterial liquid is obtained by diluting the EM stock solution of "Nongfukang" 50 times with water, and the amount of EM bacterial liquid added is 150 L of EM bacterial liquid per ton of material;

[0037] 3) Send the decomposed fermented product into a drum air dryer for drying at a drying temperature of 60-80°C until the water content is 30%;

[0038] 4) The fermented product after drying is mixed with 2 parts by weight of potassium...

Embodiment 3

[0043] 1) Crack the air-dried rice straw in a carbonization furnace at 400°C for 4 hours, collect the biochar after cooling, pass the biochar through a 60-mesh sieve after crushing, and wash the biochar for later use;

[0044] 2) Mix 10 parts by weight of biochar with 83 parts by weight of pig manure (dry weight) and 3 parts by weight of phosphate rock powder, then add EM bacteria liquid, add water to control the moisture content to 50%, stir and mix well, pour into the fermentation tank, and seal it Fermentation for 15 days; the EM bacterial liquid is obtained by diluting the "Rujin" EM bacterial liquid 50 times with water, and the amount of the EM bacterial liquid is to add 200 L of the EM bacterial liquid per ton of material;

[0045] 3) Send the decomposed fermented product into a drum air dryer for drying at a drying temperature of 60-80°C until the water content is 25%;

[0046] 4) Mix the dried fermented product with 5 parts by weight of potassium mineral powder and 2 p...

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Abstract

The invention relates to a method for preparing an organic agriculture biochar compound fertilizer. The method comprises the following steps: (1) performing high-temperature pyrolysis on air dried crop straws or excrements of poultry and livestock in a charring furnace, and collecting biochar after cooling; (2) mixing the biochar, excrements of poultry and livestock and powdered rock phosphate, adding an EM bacterium solution and water, controlling the moisture content to be 40-50 percent, uniformly stirring and mixing, and pouring the solution into a fermenting tank for performing closed fermentation; (3) drying the fermentation product which is thoroughly decomposed, so that the moisture content of the fermentation product is 20-30 percent; (4) mixing the dried fermentation product, potassium mineral powder and clay, uniformly mixing and crushing; (5) granulating the crushed materials, and drying to obtain the biochar compound fertilizer. Components contained in the biochar compound fertilizer disclosed by the invention are components allowed to be used in national standards of organic products in China, the compound fertilizer is processed in the physical process and can be used in organic farms, and the gap of biochar compound fertilizers in organic agriculture is filled.

Description

technical field [0001] The invention relates to a compound fertilizer, in particular to a biochar compound fertilizer, and more specifically to a method for preparing an organic agricultural biochar compound fertilizer that meets the standards of organic agriculture. Background technique [0002] Organic agriculture does not use chemical synthetic substances in the production process, which reduces the environmental pollution caused by the application of chemical products such as fertilizers and pesticides, and can provide humans with safer food. According to the statistics of FiBL~IFOAM (2013), from 1999 to 2011, the production area of ​​organic agriculture in the world was growing rapidly at an average annual growth rate of nearly 20%. In 2011, the production area of ​​organic agriculture in my country also reached 1.9 million hectares. However, most areas in my country have low soil organic matter content and low soil fertility, which has become one of the limiting factor...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05F17/00
CPCY02W30/40
Inventor 蔺兴武
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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