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Method for preparing biological carbon based slow-release fertilizer by using pecan shells/torreya grandis fruit shells

A pecan husk and slow-release fertilizer technology, applied in the field of bio-carbon-based fertilizer preparation, can solve the problems of agricultural product quality decline, increase of production cost, soil property change, etc., achieve low production cost, increase utilization rate, and improve soil quality Effect

Inactive Publication Date: 2015-03-25
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The loss of chemical fertilizers not only increases production costs, but also causes eutrophication of lakes, reservoirs, rivers and other water bodies, changes in soil properties, decline in productivity, and decline in the quality of agricultural products, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Preparation of biological carbon-based slow-release fertilizer

[0037] The raw materials of bio-carbon-based slow-release fertilizers include the following components in mass proportions:

[0038] Modified biological carbon 30, cattle manure and biogas residue (30 mesh) 30, chemical fertilizer 31, a 1:1 mixed solution of hydroquinone and cipyridine by mass 3, and bentonite 6.

[0039] Among them, the chemical fertilizer is a mixture of urea, superphosphate and potassium sulfate in a mass ratio of 1:2:2.

[0040] Preparation method: mixing the ingredients in the above proportions, extruding and granulating in a mold, sieving the granulated materials, putting them in an oven for drying, and cooling to obtain a biological carbon-based slow-release fertilizer.

[0041] 2. Preparation method of modified biological carbon:

[0042] (1) Crush the collected pecan and torreya husks through an 80-mesh sieve.

[0043] (2) Take 100g of the above-mentioned crushed pecan husk and torreya hus...

Embodiment 2

[0048] 1. Preparation of biological carbon-based slow-release fertilizer

[0049] The raw materials of bio-carbon-based slow-release fertilizers include the following components in mass proportions:

[0050] Modified biological carbon 32, cow manure and biogas residue (30 mesh) 30, chemical fertilizer 33, a 1:1 mixed solution of hydroquinone and cipyridine by mass 3, and bentonite 6.

[0051] Among them, the chemical fertilizer is a mixture of urea, superphosphate and potassium sulfate in a mass ratio of 1:2:2.

[0052] Preparation method: mixing the ingredients in the above proportions, extruding and granulating in a mold, sieving the granulated materials, putting them in an oven for drying, and cooling to obtain a biological carbon-based slow-release fertilizer.

[0053] 2. Preparation method of modified biological carbon:

[0054] (1) Crush the collected pecan husks and torreya husks through an 80-mesh sieve.

[0055] (2) Take 100g of the above crushed pecan husk and torreya husk mixed...

Embodiment 3

[0060] 1. Preparation of biological carbon-based slow-release fertilizer

[0061] The raw materials of bio-carbon-based slow-release fertilizers include the following components in mass proportions:

[0062] Modified biological carbon 32, cow manure and biogas residue (30 mesh) 27, fertilizer 33, a 1:1 mixed solution of hydroquinone and cipyridine by mass 3, and bentonite 5.

[0063] Among them, the chemical fertilizer is a mixture of urea, superphosphate and potassium sulfate in a mass ratio of 1:2:2.

[0064] Preparation method: mixing the ingredients in the above proportions, extruding and granulating in a mold, sieving the granulated materials, putting them in an oven for drying, and cooling to obtain a biological carbon-based slow-release fertilizer.

[0065] 2. Preparation method of modified biological carbon:

[0066] (1) Crush the collected pecan husks and torreya husks through an 80-mesh sieve.

[0067] (2) Take 100g of the above crushed pecan husk and torreya husk mixed in a 2:...

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Abstract

The invention discloses a method for preparing a biological carbon based slow-release fertilizer by using pecan shells / torreya grandis fruit shells. The method comprises the following steps: by taking pecan shells / torreya grandis fruit shells as a raw material, preparing modified biological carbon through anaerobic pyrolysis, and mixing with cow dung biogas residues, chemical fertilizers, a urease inhibitor and a nitrification inhibitor to prepare a high-efficiency slow-release fertilizer. The slow-release fertilizer prepared by using the method is simple in production process, easy in obtaining raw materials, low in production cost and beneficial for benign development of agriculture ecological systems as not only is the utilization rate of nitrogen, phosphorus and potassium effectively increased and is the nutrient loss reduced, but also the soil quality is improved, and the quality of agriculture products is improved.

Description

technical field [0001] The invention relates to the technical field of preparation of biochar-based fertilizers, in particular to a method for preparing biochar-based slow-release fertilizers by using pecan husks / torreya husks. Background technique [0002] According to statistics, the annual consumption of chemical fertilizers in my country has reached 42.14 million tons, with an average of 368 kg / hm 2 , and there is still an irrational structure in the application process of chemical fertilizers, and the utilization rate of chemical fertilizers is extremely low. According to data, the average utilization rate of nitrogen fertilizer in my country is only 30% to 40%, phosphate fertilizer is only 10% to 20%, and potassium fertilizer is only 35% to 50%. The loss of chemical fertilizers not only increases production costs, but also causes eutrophication of lakes, reservoirs, rivers and other water bodies, changes in soil properties, decline in productivity, and decline in the ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/08C05G3/90
CPCC05F7/00C05F11/00C05G3/80C05G3/90Y02A40/22Y02E50/30Y02P60/21
Inventor 朱启红夏红霞
Owner CHONGQING UNIV OF ARTS & SCI
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