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Method for preparing biochar-base fertilizer from cotton straws

A cotton straw and biochar technology, applied in fertilizer mixtures, applications, fertilization devices, etc., can solve problems such as pests and diseases, and achieve the effects of slowing down global warming, reducing air pollution, and reducing secondary pests and diseases

Active Publication Date: 2013-12-25
INST OF SOIL & FERTILIZER XINJIANG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing biochar-based chemical fertilizers from cotton stalks, so as to solve the problems of plant diseases and insect pests caused by the direct return of cotton stalks to the field

Method used

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  • Method for preparing biochar-base fertilizer from cotton straws
  • Method for preparing biochar-base fertilizer from cotton straws
  • Method for preparing biochar-base fertilizer from cotton straws

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The biochar-based fertilizer of this embodiment is a special biochar-based fertilizer for cotton

[0031] Crush the gypsum, bentonite and cotton straw biochar, pass the gypsum and bentonite through a 100-mesh sieve, and pass the cotton straw biochar through a 40-mesh sieve.

[0032] The addition amount of every 100 kilograms of cotton-specific biochar-based fertilizer raw materials is as follows: 18.2 kilograms of ammonium phosphate (P 2 o 5 -44, N-11), 8.7 kg of urea, 8 kg of potassium sulfate (K 2 O-50), 1.5 kg of zinc sulfate, 1.5 kg of boric acid, 8.1 kg of nitrohumic acid, 30 kg of cotton straw biochar, 12 kg of gypsum and 12 kg of bentonite were mixed together and stirred evenly to obtain a fertilizer mixture. Heat to make the temperature of the fertilizer mixture at 60°C, and the water content of the fertilizer mixture is 4-10%.

[0033] The fertilizer mixture is firstly granulated with a drum granulator, and then shaped and granulated with a disc granulator t...

Embodiment 2

[0036] The biochar-based fertilizer of this embodiment is a special biochar-based fertilizer for cotton

[0037] Crush the gypsum, bentonite and cotton straw biochar, pass the gypsum and bentonite through a 100-mesh sieve, and pass the cotton straw biochar through a 40-mesh sieve.

[0038] The addition amount of every 100 kilograms of cotton-specific biochar-based fertilizer raw materials is as follows: 18.2 kilograms of ammonium phosphate (P 2 o 5 -44, N-11), 8.7 kilograms of urea, 8.1 kilograms of potassium sulfate (K 2 O-50), 1.5 kg of zinc sulfate, 1.5 kg of boric acid, 8.1 kg of nitrohumic acid, 35 kg of cotton straw biochar, 9.5 kg of gypsum and 9.5 kg of bentonite were mixed together and stirred uniformly to obtain a fertilizer mixture. Heat to make the temperature of the fertilizer mixture at 65°C, and the water content of the fertilizer mixture is 4-10%.

[0039] The fertilizer mixture is firstly granulated with a drum granulator, and then shaped and granulated wit...

Embodiment 3

[0042] The biochar-based fertilizer of this embodiment is a special biochar-based fertilizer for cotton

[0043] Crush the gypsum, bentonite and cotton straw biochar, pass the gypsum and bentonite through a 100-mesh sieve, and pass the cotton straw biochar through a 40-mesh sieve.

[0044] The addition amount of every 100 kilograms of cotton-specific biochar-based fertilizer raw materials is as follows: 18.2 kilograms of ammonium phosphate (P 2 o 5 -44, N-11), 8.7 kg of urea, 8 kg of potassium sulfate (K 2 O-50), 1.5 kg of zinc sulfate, 1.5 kg of boric acid, 8.1 kg of nitrohumic acid, 40 kg of cotton straw biochar, 7 kg of gypsum and 7 kg of bentonite were mixed together and stirred evenly to obtain a fertilizer mixture. Heat to make the temperature of the fertilizer mixture at 70°C, and the water content of the fertilizer mixture is 4-10%.

[0045]The fertilizer mixture is firstly granulated with a drum granulator, and then shaped and granulated with a disc granulator to o...

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Abstract

The invention discloses a method for preparing a biochar-base fertilizer from cotton straws, which comprises the following steps: 1. preparing cotton straw biochar from cotton straws; 2. pulverizing gypsum, bentonite and cotton straw biochar, respectively passing the gypsum and bentonite through a 100-mesh screen, and passing the cotton straw biochar through a 40-mesh screen; 3. mixing 16-19 parts of weight of ammonium phosphate, 7-9 parts of weight of urea, 7-9 parts of weight of potassium sulfate, 1-2 parts of weight of zinc sulfate, 1-2 parts of weight of boric acid, 7-9 parts of weight of nitrohumic acid, 30-40 parts of weight of cotton straw biochar, 7-12 parts of weight of gypsum and 7-12 parts of weight of bentonite together, and stirring uniformly to obtain a fertilizer mixture; 4. carrying out primary granulation on the fertilizer mixture with a rotating drum granulator, and carrying out reshaping granulation with a disk granulator to obtain fertilizer granules; and 5. drying the fertilizer granules with a drying machine to obtain the biochar-base fertilizer.

Description

technical field [0001] The invention relates to the technical field of biochar-based fertilizer preparation, in particular to a method for preparing biochar-based fertilizer with cotton stalks. Background technique [0002] In the northern part of our country, many places where cotton is planted have been continuously cropped for a long time, and in some places the continuous cropping time has reached more than 10 years. The cotton growth process absorbs a certain amount of mineral elements in the soil according to the nutritional characteristics of cotton. It is right to return the cotton stalks to the soil. The organic matter and mineral elements lost in the soil are better replenished, but the cotton straw returning to the field in the cotton cropping area for a long time has brought certain diseases and insect pests to the soil. Soil quality has seriously declined. In my country's major cotton areas, there is a large amount of cotton stalks. In order to prevent pests and d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 孙宁川徐万里唐光木马海刚葛春辉
Owner INST OF SOIL & FERTILIZER XINJIANG ACAD OF AGRI SCI
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