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Biochar-based organic fertilizer, preparation method thereof, and application of biochar-based organic fertilizer to crop planting

A biochar and organic fertilizer technology, applied in the preparation of organic fertilizers, the treatment of biological organic parts, organic fertilizers, etc., can solve the problems of lack of innovative support for the utilization of corn straw resources, the effect of fertilizer application is not obvious, and the straw resources are not fully utilized. , to achieve the effect of improving rhizosphere environment, high added value of products, improving structure and porosity

Inactive Publication Date: 2019-06-14
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past, only a few beer residues were used as roughage, and most of them were discarded as waste residues, which not only caused waste of resources but also polluted the environment
In the planting industry, taking corn stalks as an example, due to the lack of innovative support for the utilization of corn stalk resources, the rich straw resources have not played their due role
The total utilization rate is less than 50%, and the rest are discarded or incinerated, resulting in waste of resources and environmental pollution
Although there are a large number of biomass raw materials in industry and agriculture, due to the current biomass raw material conversion technology that needs to be improved, the simple conversion and application of biomass raw materials to the land is prone to difficulty in utilization and the effect of fertilizer application is not obvious.
At the same time, the application of traditional chemical fertilizers in crop planting will lead to low corn yields due to fertilization methods, and excessive application of chemical fertilizers will also cause technical problems such as soil quality degradation and environmental pollution

Method used

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  • Biochar-based organic fertilizer, preparation method thereof, and application of biochar-based organic fertilizer to crop planting

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preparation example Construction

[0029] The raw materials of the biochar-based organic fertilizer provided by the invention include graphene / Mn / biomass charcoal. In parts by weight, the graphene / Mn / biomass char is preferably 16-19 parts, more preferably 17-18 parts. The preparation method of described graphene / Mn / biomass charcoal, comprises the following steps:

[0030] 1) mixing corn stalk residue powder and graphene to obtain a mixture;

[0031] 2) heating the mixture at 90-110° C. for 0.5-2 hours to obtain a heated product;

[0032] 3) mixing the heated product with manganese chloride, and carbonizing at 500-600° C. for 3-5 hours to obtain the primary graphene-modified biochar;

[0033] 4) removing the ash from the graphene-modified biochar primary product to obtain graphene / Mn / biomass charcoal.

[0034] In the present invention, the corn stalk residue powder is preferably obtained by removing attachments from corn stalks, crushing and sieving. The method for removing attachments from corn stalks is pr...

Embodiment 1

[0060] Raw material preparation

[0061] 1) Beer dregs pretreatment: Dehydrate and dry the beer dregs until the water content is less than 10%, put them in a pulverizer to pulverize them, and pass through a 20-mesh sieve to obtain pretreated beer dregs.

[0062] 2) Preparation method of corn stalk biochar

[0063] After the corn stalks were washed 4 times with water to remove surface adherents, they were air-dried for 2 days and dried overnight in an oven at 70°C. After crushing, they were passed through a 100 sieve and put in brown bottles for later use.

[0064] Instrument: Program-controlled muffle furnace.

[0065] Method: Oxygen-limited and temperature-controlled carbonization. Mix the above-mentioned corn stalk residue powder and graphene at a mass ratio of 200:1 and put them in a crucible to obtain a mixture; heat at 110°C for 0.5h, and the mass ratio of the heated product to manganese chloride is 100-1 Manganese chloride was added in the proportion, mixed evenly, an...

Embodiment 2

[0075] Raw material preparation:

[0076] 1) Beer dregs are decomposed: dehydrating and drying the beer dregs until the water content is less than 10%, putting them in a pulverizer to pulverize them, and passing through a 20-mesh sieve to obtain pretreated beer dregs.

[0077] 2) The preparation of corn stalk biochar, that is, the preparation of modified biochar. The preparation method is as follows: the corn stalks are washed 4 times with water to remove surface adherents, then air-dried for 2 days, dried overnight in an oven at 80°C, crushed, and dried for 80 Mesh sieve, put in a brown bottle and set aside.

[0078] Instrument: Program-controlled muffle furnace. Method: Oxygen-limited and temperature-controlled carbonization. Corn stalk residue powder and graphene passed through an 80-mesh sieve were mixed in a crucible at a mass ratio of 200:1 to obtain a mixture; heated at 110°C for 0.5h, and then mixed according to the mass ratio of the heated product to manganese chlor...

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Abstract

The invention provides biochar-based organic fertilizer, a preparation method thereof, and application of the biochar-based organic fertilizer to crop planting, and belongs to the technical field of fertilizer. The biochar-based organic fertilizer is prepared from the following raw materials in parts by weight: 15-20 parts of graphene / Mn / biochar, 25-40 parts of beer residue, 5-8 parts of zinc andpotassium fulvate, 3-5 parts of beet molasses, 10-20 parts of peanut shell powder, 6-8 parts of an EM microbial agent, 10-30 parts of corn stalk and 50-70 parts of pig manure in a fermentation mode. The preparation method of the graphene / the Mn / the biochar comprises the steps that corn stalk residue powder and the graphene are mixed, heating is conducted for 0.5 h to 2 h at 90 DEG C to 110 DEG C,a product is mixed with a manganese chloride solution, carbonizing is conducted for 3 h to 5 h at 500 DEG C to 600 DEG C, and the graphene / the Mn / the biochar is prepared after ash is removed. The biochar-based organic fertilizer achieves the effects of maintaining the land and increasing production and is an optimal fertilizer source for organic cultivation of corn; and meanwhile, the preparationcost is low, the technology is advanced, and scale production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a biochar-based organic fertilizer, a preparation method thereof and its application in crop planting. Background technique [0002] Although my country is rich in biomass resources, the waste of biomass resources is serious due to the backward technology of preservation and transformation, which not only pollutes the environment, but also causes a huge waste of biomass resources. In the livestock and poultry breeding industry, with the rapid development of the livestock and poultry breeding industry and planting industry, the amount of livestock and poultry manure produced is increasing. According to statistics, the total annual discharge of livestock and poultry manure in my country is as high as 3.8 billion tons. A large amount of livestock and poultry manure The random stacking and inefficient treatment of waste also put a lot of pressure on environmental gover...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05F17/00C05G3/80
CPCY02W30/40
Inventor 柳新伟宋宁宁王凯荣崔德杰
Owner QINGDAO AGRI UNIV
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