A kind of modified biochar, biochar-based organic fertilizer and its preparation method and application

A technology of biochar and organic fertilizer, applied in the field of organic fertilizer, can solve the problems of declining soil quality of chemical fertilizers, low crop yield, environmental pollution, etc., and achieves the improvement of corn's ability to resist diseases and insect pests, good ventilation and water permeability, and increased water and fertilizer storage capacity. Effect

Active Publication Date: 2020-06-23
QINGDAO AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a kind of modified biochar, biochar-based organic fertilizer and its preparation method and application thereof. The characteristics of strong synergistic ability, combined with other raw materials to solve the technical problems of low crop yield caused by the fertilization method of organic fertilizer in the process of crop planting in the prior art, excessive application of chemical fertilizers caused soil quality decline, and environmental pollution.

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  • A kind of modified biochar, biochar-based organic fertilizer and its preparation method and application
  • A kind of modified biochar, biochar-based organic fertilizer and its preparation method and application

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preparation example Construction

[0051] The raw material of the biochar-based organic fertilizer provided by the present invention includes Rhodotorula japonicus starter. In parts by weight, the rhodotorula japonicus starter is 3 to 5 parts, preferably 4 parts. The preservation number of the Rhodotorula gum OP11 is CGMCCNo.13540; the viable count of the Rhodotorula gum starter is preferably 3×10 8 ~1×10 9 CFU / g. The function of the rhodotorula japonicus starter is to accelerate the decomposing of the compost material, increase the temperature, control the odor, and increase the beneficial microorganisms in the finished compost. In the embodiment of the present invention, the preparation method of described Rhodotorula japonicus starter preferably comprises the following steps:

[0052] The original strain of strain OP11 was inoculated on wort solid medium under aseptic conditions, and cultured at 30°C for 2 days for activation; the activated strain was inoculated in wort liquid medium under aseptic conditi...

Embodiment 1

[0066] Preparation method of modified biochar

[0067] The peach wood biomass was washed 4 times with water to remove surface adherents, air-dried for 2 days, then dried overnight in an oven at 80°C, crushed, passed through a 100-mesh sieve, and collected under the sieve and packed in bottles for later use.

[0068] The carbonization equipment is a program-controlled muffle furnace.

[0069] Method: The peach wood residue powder and graphene oxide prepared above were mixed in a crucible according to the mass ratio of 100:1, and slowly heated in a muffle furnace at 600°C under the protection of a nitrogen atmosphere (atmosphere flow rate was controlled at 300mL / min). Pyrolysis for 2 hours, peach wood residue powder to produce biochar. Take 5.0g biochar with 50mL KMnO 4 (0.079M) solution, and then pyrolyzed at 600 °C for 0.5 h to produce crude modified biochar. The obtained crude modified biochar was thoroughly washed with deionized (DI) water to remove impurities. The washe...

Embodiment 2

[0072] A preparation method of modified biochar and distiller's grains fermented organic fertilizer, comprising the following steps:

[0073] Raw materials weighing the following weights: 30kg of modified biochar prepared in Example 1, 60kg of cow dung, 15kg of distiller's grains, 10kg of peanut shell powder, 6kg of wood vinegar, 4kg of sugar beet molasses, 4kg of Rhodotorula ferment, 4kg of compound cellulase 0.1kg (sourced from Aspergillus niger, enzyme activity ranges from 100,000 to 200,000 U / g).

[0074] Decomposition of distiller's grains: dehydrate and dry the distiller's grains until the water content is less than 10%, fully stir, and carry out natural fermentation for 12 days. The decomposed distiller's grains are naturally air-dried to normal temperature, dried, pulverized in a pulverizer, and passed through a 20-mesh sieve to obtain decomposed distiller's grains.

[0075] Primary fermentation: Weigh the modified biochar, cow dung, peanut shell powder, and decompose...

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Abstract

The invention provides modified biochar, a biochar-based organic fertilizer, and a preparation method and application thereof, and belongs to the technical field of organic fertilizers. The preparation method of the modified biochar comprises the following steps: crushing and sieving peach wood residues; mixing the obtained peach wood residue powder with graphene oxide, and pyrolyzing the mixturefor 2-3 hours at 550-600 DEG C under the protection of nitrogen; soaking the pyrolyzed product with a potassium permanganate solution, pyrolyzing the product again for 0.4-0.6 h at 550-600 DEG C; andwater-washing the pyrolysis product to remove impurities. The biochar-based organic fertilizer is obtained by fermenting the following raw materials in parts by weight: 30-40 parts of the modified biochar, 60-80 parts of cow dung, 15-25 parts of decomposed distiller grain, 10-20 parts of peanut shell powder, 6-8 parts of pyroligneous liquor, 4-6 parts of beet molasses, 3-5 parts of rhodotorula mucilaginosa fermenting agent and 0.08-0.12 part of compound cellulase. The biochar-based organic fertilizer has the effects of land nourishing and yield increasing. The method has the advantages of easily available raw materials, low cost and advanced process, and can implement large-scale production.

Description

technical field [0001] The invention belongs to the technical field of organic fertilizers, and in particular relates to a modified biochar, a biochar-based organic fertilizer, a preparation method and an application thereof. Background technique [0002] Although our 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 environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05C05G3/40C05G3/80C05G3/60A01G22/20
Inventor 刘君宋宁宁王凯荣宗海英
Owner QINGDAO AGRI UNIV
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