CN116836024A - Biogas slurry biological fertilizer and preparation method and application thereof - Google Patents
Biogas slurry biological fertilizer and preparation method and application thereof Download PDFInfo
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- 239000002002 slurry Substances 0.000 title claims abstract description 66
- 239000003337 fertilizer Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000010902 straw Substances 0.000 claims abstract description 25
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 claims abstract description 23
- 241000723346 Cinnamomum camphora Species 0.000 claims abstract description 23
- 240000000233 Melia azedarach Species 0.000 claims abstract description 23
- 229960000846 camphor Drugs 0.000 claims abstract description 23
- 229930008380 camphor Natural products 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 230000000813 microbial effect Effects 0.000 claims abstract description 20
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 17
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 210000003608 fece Anatomy 0.000 claims abstract description 17
- 239000010871 livestock manure Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 17
- 239000010457 zeolite Substances 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 10
- 230000035558 fertility Effects 0.000 claims abstract description 9
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 6
- 230000000749 insecticidal effect Effects 0.000 claims abstract description 6
- 239000000706 filtrate Substances 0.000 claims description 20
- 238000000855 fermentation Methods 0.000 claims description 12
- 230000004151 fermentation Effects 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 241000228245 Aspergillus niger Species 0.000 claims description 10
- 244000063299 Bacillus subtilis Species 0.000 claims description 10
- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000003895 organic fertilizer Substances 0.000 claims description 7
- 125000001741 organic sulfur group Chemical group 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000008394 flocculating agent Substances 0.000 claims description 5
- 238000000643 oven drying Methods 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 235000010149 Brassica rapa subsp chinensis Nutrition 0.000 claims description 4
- 229920002261 Corn starch Polymers 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 4
- 240000008042 Zea mays Species 0.000 claims description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 4
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 235000005822 corn Nutrition 0.000 claims description 4
- 239000008120 corn starch Substances 0.000 claims description 4
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 4
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 4
- 229940100445 wheat starch Drugs 0.000 claims description 4
- 235000000536 Brassica rapa subsp pekinensis Nutrition 0.000 claims description 3
- 235000012216 bentonite Nutrition 0.000 claims description 3
- 235000021049 nutrient content Nutrition 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 241000499436 Brassica rapa subsp. pekinensis Species 0.000 claims 1
- 235000015099 wheat brans Nutrition 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000002045 lasting effect Effects 0.000 abstract description 3
- 239000010815 organic waste Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 240000007124 Brassica oleracea Species 0.000 description 3
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 description 3
- 235000011301 Brassica oleracea var capitata Nutrition 0.000 description 3
- 235000001169 Brassica oleracea var oleracea Nutrition 0.000 description 3
- 244000221633 Brassica rapa subsp chinensis Species 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 230000006806 disease prevention Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- 229930192334 Auxin Natural products 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- PNNCWTXUWKENPE-UHFFFAOYSA-N [N].NC(N)=O Chemical compound [N].NC(N)=O PNNCWTXUWKENPE-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 239000002363 auxin Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000010796 biological waste Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- SEOVTRFCIGRIMH-UHFFFAOYSA-N indole-3-acetic acid Chemical compound C1=CC=C2C(CC(=O)O)=CNC2=C1 SEOVTRFCIGRIMH-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002068 microbial inoculum Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Tropical Medicine & Parasitology (AREA)
- Plant Pathology (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The application discloses a biogas slurry biological fertilizer and a preparation method and application thereof, and belongs to the technical field of agricultural organic waste resource utilization. The biogas slurry biological fertilizer is prepared from the following raw materials in parts by weight: 50-80 parts of biogas slurry, 30-55 parts of biogas residues, 0.1-2 parts of microbial agent, 0.5-2 parts of zeolite powder, 10-30 parts of pig manure, 10-20 parts of chinaberry leaves, 10-20 parts of camphor leaves, 0.5-2 parts of bran, 0.2-1 part of vinasse, 10-20 parts of crop straws and 1-5 parts of forming auxiliary agent. The biogas slurry biological fertilizer prepared by adopting the specific preparation method utilizes a large amount of waste biogas slurry, biogas residue, bran, vinasse and crop straws, improves the waste utilization rate and reduces the environmental pollution. The fertilizer has simple preparation method, can effectively improve the fertility of soil, has the antibacterial and insecticidal effects, has lasting and efficient fertility and is harmless to human bodies and the environment.
Description
The application relates to a divisional application of which the application date is 2018, 01, 22 and the application number is 201810060489.X, and the application name is biogas slurry biological fertilizer and a preparation method thereof.
Technical Field
The application relates to the technical field of agricultural organic waste resource utilization, in particular to a biogas slurry biological fertilizer and a preparation method and application thereof.
Background
The biogas slurry is waste liquid generated in the process of fermenting biogas by biological waste, contains rich nutrient elements, amino acids, humic acid, auxin, hydrolase, vitamins and other bioactive substances, realizes the comprehensive utilization of the biogas slurry, and has important significance.
The existing biogas slurry biological fertilizer has complex preparation process and poor disease prevention effect, and cannot meet the agricultural requirements.
Therefore, the biogas slurry biological fertilizer which has simple preparation process, can improve soil fertility and has disease prevention effect and the preparation method thereof have great practical value.
Disclosure of Invention
The application provides a biogas slurry biological fertilizer which can solve the problems in the prior art.
The application provides a biogas slurry biological fertilizer which is prepared from the following raw materials in parts by weight: 50-80 parts of biogas slurry, 30-55 parts of biogas residues, 0.1-2 parts of microbial agent, 0.5-2 parts of zeolite powder, 10-30 parts of pig manure, 10-20 parts of chinaberry leaves, 10-20 parts of camphor leaves, 0.5-2 parts of bran, 0.2-1 part of vinasse, 10-20 parts of crop straws and 1-5 parts of forming auxiliary agent.
Preferably, the biogas slurry bio-fertilizer is prepared from the following raw materials in parts by weight: 60 parts of biogas slurry, 45 parts of biogas residues, 1 part of microbial agent, 1 part of zeolite powder, 24 parts of pig manure, 15 parts of chinaberry leaves, 15 parts of camphor leaves, 1 part of bran, 0.5 part of vinasse, 18 parts of crop straw and 3 parts of forming auxiliary agent.
Preferably, the biogas slurry bio-fertilizer is prepared from the following raw materials in parts by weight: 55 parts of biogas slurry, 40 parts of biogas residues, 0.8 part of microbial agent, 1.2 parts of zeolite powder, 20 parts of pig manure, 12 parts of chinaberry leaves, 15 parts of camphor leaves, 1.5 parts of bran, 1 part of vinasse, 15 parts of crop straws and 2 parts of forming auxiliary agent.
Preferably, the biogas slurry bio-fertilizer is prepared from the following raw materials in parts by weight: 65 parts of biogas slurry, 50 parts of biogas residues, 1.2 parts of microbial agent, 0.8 part of zeolite powder, 16 parts of pig manure, 12 parts of chinaberry leaves, 18 parts of camphor leaves, 1.8 parts of bran, 0.5 part of vinasse, 13 parts of crop straws and 4 parts of forming auxiliary agent.
Preferably, the microbial agent comprises bacillus subtilis or aspergillus niger or a combination of both.
Preferably, the forming aid comprises one or a combination of several of bentonite, sodium carboxymethyl cellulose, corn starch or wheat starch.
The application also provides a preparation method of the biogas slurry biological fertilizer, which comprises the following steps:
a. firstly, filtering biogas slurry to obtain filtrate, adding a flocculating agent into the filtrate, adding organic sulfur TMT-15, fully stirring, and then precipitating to remove precipitate to obtain treated biogas slurry;
b. crushing: crushing chinaberry leaves, camphor leaves and crop straws;
c. adding crushed chinaberry leaves, camphor leaves, bran, vinasse, crop straws and pig manure into the treated biogas slurry, then adding a microbial agent, and fermenting at 15-40 ℃ to obtain a fermentation mixture;
d. c, adding biogas residues, zeolite powder and forming aids into the fermentation mixture obtained in the step c, and uniformly stirring;
e. granulating with a granulator, shaping, and oven drying.
Preferably, in the step a, the addition amount of the flocculating agent is 0.5-5% of the mass of the filtrate, and the addition amount of the organic sulfur TMT-15 is 0.5-1.5% of the mass of the filtrate.
Preferably, the fermentation temperature in step c is 18-35 ℃.
In the application, the biogas slurry organic fertilizer has total nutrient content of more than or equal to 200 g.L based on dry basis -1 The organic matter content is 43.6-52.5 g.L -1 The total nitrogen content is 141-161 g.L -1 The total phosphorus content is 22.7-26.1 g.L -1 The total potassium content is 58.5-62.7g.L -1 The effective viable count is 0.297-0.323 hundred million g -1 The pH value is 6.92-7.66.
The application provides application of the biogas slurry organic fertilizer in one or more than two of the following (1) - (4):
(1) The yield of the Chinese cabbage is improved;
(2) The corn yield is improved;
(3) Improving fertility of soil;
(4) Antibacterial and insecticidal.
Compared with the prior art, the application has the beneficial effects that: the biogas slurry bio-fertilizer disclosed by the application utilizes a large amount of waste biogas slurry, biogas residues, bran, vinasse and crop straws, so that the waste utilization rate is improved, and the environmental pollution is reduced. The combination of the chinaberry leaves and the camphor leaves has good insecticidal and bactericidal effects, and the bran, the vinasse and the like not only provide good nutrients for microorganisms, but also have the effect of promoting the fertilizer efficiency to play. The preparation method of the fertilizer not only removes a large amount of harmful heavy metals, but also is environment-friendly and does not produce secondary pollution. The fertilizer has simple preparation method, can effectively improve the fertility of soil, has the antibacterial and insecticidal effects, has lasting and efficient fertility and is harmless to human bodies and the environment.
Detailed Description
The following detailed description of specific embodiments of the application is, but it should be understood that the application is not limited to specific embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The microbial inoculum used in the application is a commercial product, and the purchase sources of bacillus subtilis and aspergillus niger are Beijing Ten technical Limited liability company.
Example 1:
the application provides a biogas slurry biological fertilizer which is prepared from the following raw materials in parts by weight: 60 parts of biogas slurry, 45 parts of biogas residues, 1 part of microbial agent, 1 part of zeolite powder, 24 parts of pig manure, 15 parts of chinaberry leaves, 15 parts of camphor leaves, 1 part of bran, 0.5 part of vinasse, 18 parts of crop straw, and 3 parts of corn starch or wheat starch. The mass ratio of the bacillus subtilis to the aspergillus niger in the microbial agent is 1:1.
Example 2:
the application provides a biogas slurry biological fertilizer which is prepared from the following raw materials in parts by weight: 55 parts of biogas slurry, 40 parts of biogas residues, 0.8 part of microbial agent, 1.2 parts of zeolite powder, 20 parts of pig manure, 12 parts of chinaberry leaves, 15 parts of camphor leaves, 1.5 parts of bran, 1 part of vinasse, 15 parts of crop straws, 1 part of bentonite and 1 part of sodium carboxymethylcellulose. The mass ratio of the bacillus subtilis to the aspergillus niger in the microbial agent is 1:1.
Example 3:
the application provides a biogas slurry biological fertilizer which is prepared from the following raw materials in parts by weight: 65 parts of biogas slurry, 50 parts of biogas residues, 1.2 parts of microbial agent, 0.8 part of zeolite powder, 16 parts of pig manure, 12 parts of chinaberry leaves, 18 parts of camphor leaves, 1.8 parts of bran, 0.5 part of vinasse, 13 parts of crop straws and 4 parts of bentonite. The mass ratio of the bacillus subtilis to the aspergillus niger in the microbial agent is 1:1.
Example 4:
wherein the microbial agent is prepared by mixing bacillus subtilis and aspergillus niger in any proportion.
Example 5:
the preparation method of the biogas slurry biological fertilizer comprises the following steps:
a. firstly, filtering biogas slurry to obtain filtrate, adding flocculant with the mass of 3% of the filtrate into the filtrate, adding organic sulfur TMT-15 with the mass of 1.2%o, fully stirring, and then precipitating to remove precipitate to obtain treated biogas slurry;
b. crushing: crushing chinaberry leaves, camphor leaves and crop straws;
c. adding crushed chinaberry leaves, camphor leaves, bran, vinasse, crop straws and pig manure into the treated biogas slurry, then adding bacillus subtilis and aspergillus niger, and fermenting at 18 ℃ to obtain a fermentation mixture;
d. c, adding biogas residues, zeolite powder and forming aids into the fermentation mixture obtained in the step c, and uniformly stirring;
e. granulating with a granulator, shaping, and oven drying.
Example 6:
the preparation method of the biogas slurry biological fertilizer comprises the following steps:
a. firstly, filtering biogas slurry to obtain filtrate, adding flocculant with the mass of 1% of the filtrate into the filtrate, adding organic sulfur TMT-15 with the mass of 0.8 per mill of the filtrate, fully stirring, and then precipitating to remove precipitate to obtain treated biogas slurry;
b. crushing: crushing chinaberry leaves, camphor leaves and crop straws;
c. adding crushed chinaberry leaves, camphor leaves, bran, vinasse, crop straws and pig manure into the treated biogas slurry, then adding bacillus subtilis and aspergillus niger, and fermenting at 25 ℃ to obtain a fermentation mixture;
d. c, adding biogas residues, zeolite powder and forming aids into the fermentation mixture obtained in the step c, and uniformly stirring;
e. granulating with a granulator, shaping, and oven drying.
Example 7:
the preparation method of the biogas slurry biological fertilizer comprises the following steps:
a. firstly, filtering biogas slurry to obtain filtrate, adding a flocculating agent accounting for 2% of the filtrate mass into the filtrate, adding organic sulfur TMT-15 accounting for 1.0% of the filtrate mass, fully stirring, and then precipitating to remove precipitate to obtain treated biogas slurry;
b. crushing: crushing chinaberry leaves, camphor leaves and crop straws;
c. adding crushed chinaberry leaves, camphor leaves, bran, vinasse, crop straws and pig manure into the treated biogas slurry, then adding bacillus subtilis and aspergillus niger, and fermenting at 35 ℃ to obtain a fermentation mixture;
d. b, adding biogas residues, zeolite powder and forming aids into the fermentation mixture obtained in the step b, and uniformly stirring;
e. granulating with a granulator, shaping, and oven drying.
Wherein the forming auxiliary agent comprises one or a combination of a plurality of bentonite, sodium carboxymethyl cellulose, corn starch or wheat starch.
Wherein, the addition amount of the flocculating agent is generally 0.5-5% of the mass of the filtrate, the addition amount of the organic sulfur TMT-15 is 0.5-1.5 per mill, and the specific addition amount in actual operation is based on the removal rate of the required metal.
Example 1 of the present application sample 1, example 2, example 3, example 7, was prepared according to the preparation method of example 5, example 2, example 6, and example 3. The fertilizer nutrient composition detection analysis of samples 1, 2 and 3 is shown in table 1:
table 1 samples 1, 2, 3 nutrient content of fertilizer
The effect evaluation was performed by potting, applying samples 1, 2 and 3 to the soil, with urea nitrogen fertilizer as control, and 3 replicates per treatment, with the test crop selected from chinese cabbage (Brassica chinensis l.). The soil samples are collected after the cabbage is planted for 40 days to be ripe and harvested, a five-point sampling method is adopted for uniformly mixing, the collected soil samples are used for removing root residues of vegetables, natural air drying and grinding are carried out, and the obtained soil samples are sieved by a 100-mesh sieve and are used for measuring physical and chemical properties of soil.
The changes in physical and chemical indexes of the soil after the samples 1 to 3 and the control group were applied are shown in Table 2.
TABLE 2 physical and chemical indicators of soil after application of biofertilizer
The fertilizer of the sample 1 is used for planting the cabbages in a fertilizing amount of 9t/ha, so that the yield of the cabbages is increased by more than 55%, and the plant diseases and insect pests are greatly reduced.
The fertilizer of sample 2 of the present application was used for corn planting at a fertilizing amount of 7t/ha, resulting in an increase in corn yield of more than 15%.
The technical indexes of the fertilizer and the heavy metal limiting technical index meet the standard of NY-884-201 biological organic fertilizer.
The biogas slurry bio-fertilizer disclosed by the application utilizes a large amount of waste biogas slurry, biogas residues, bran, vinasse and crop straws, so that the waste utilization rate is improved, and the environmental pollution is reduced. The fertilizer has simple preparation method, can effectively improve the fertility of soil, has the antibacterial and insecticidal effects, has lasting and efficient fertility and is harmless to human bodies and the environment. The non-illustrated portions of the present application are the same as or implemented using prior art techniques.
The foregoing disclosure is merely illustrative of some embodiments of the application, but the embodiments are not limited thereto and variations within the scope of the application will be apparent to those skilled in the art.
Claims (10)
1. The preparation method of the biogas slurry biological fertilizer is characterized by comprising the following steps:
a. firstly, filtering biogas slurry to obtain filtrate, adding a flocculating agent into the filtrate, adding organic sulfur TMT-15, fully stirring, and then precipitating to remove precipitate to obtain treated biogas slurry;
b. crushing: crushing chinaberry leaves, camphor leaves and crop straws;
c. adding crushed chinaberry leaves, camphor leaves, crop straws, wheat bran, vinasse and pig manure into the treated biogas slurry, then adding a microbial agent, and fermenting at 15-40 ℃ to obtain a fermentation mixture;
d. c, adding biogas residues, zeolite powder and forming aids into the fermentation mixture obtained in the step c, and uniformly stirring;
e. granulating with a granulator, shaping, and oven drying;
the biogas slurry bio-fertilizer is prepared from the following raw materials in parts by weight: 50-80 parts of biogas slurry, 30-55 parts of biogas residues, 0.1-2 parts of microbial agent, 0.5-2 parts of zeolite powder, 10-30 parts of pig manure, 10-20 parts of chinaberry leaves, 10-20 parts of camphor leaves, 0.5-2 parts of bran, 0.2-1 part of vinasse, 10-20 parts of crop straws and 1-5 parts of forming auxiliary agent.
2. The preparation method of claim 1, wherein the biogas slurry biofertilizer is prepared from the following raw materials in parts by weight: 60 parts of biogas slurry, 45 parts of biogas residues, 1 part of microbial agent, 1 part of zeolite powder, 24 parts of pig manure, 15 parts of chinaberry leaves, 15 parts of camphor leaves, 1 part of bran, 0.5 part of vinasse, 18 parts of crop straw and 3 parts of forming auxiliary agent.
3. The preparation method of claim 1, wherein the biogas slurry biofertilizer is prepared from the following raw materials in parts by weight: 55 parts of biogas slurry, 40 parts of biogas residues, 0.8 part of microbial agent, 1.2 parts of zeolite powder, 20 parts of pig manure, 12 parts of chinaberry leaves, 15 parts of camphor leaves, 1.5 parts of bran, 1 part of vinasse, 15 parts of crop straws and 2 parts of forming auxiliary agent.
4. The preparation method of claim 1, wherein the biogas slurry biofertilizer is prepared from the following raw materials in parts by weight: 65 parts of biogas slurry, 50 parts of biogas residues, 1.2 parts of microbial agent, 0.8 part of zeolite powder, 16 parts of pig manure, 12 parts of chinaberry leaves, 18 parts of camphor leaves, 1.8 parts of bran, 0.5 part of vinasse, 13 parts of crop straws and 4 parts of forming auxiliary agent.
5. The method of any one of claims 1-4, wherein the microbial agent comprises bacillus subtilis or aspergillus niger or a combination of both.
6. The method of any one of claims 1-4, wherein the forming aid comprises one or a combination of several of bentonite, sodium carboxymethylcellulose, corn starch and wheat starch.
7. The process according to claim 1, wherein in step a, the flocculant is added in an amount of 0.5 to 5% by mass of the filtrate and the organosulfur TMT-15 is added in an amount of 0.5 to 1.5% by mass of the filtrate.
8. The process according to claim 1, wherein the fermentation temperature in step c is 18-35 ℃.
9. The biogas slurry organic fertilizer prepared by the preparation method of any one of claims 1 to 8, which is characterized in that the total nutrient content of the biogas slurry organic fertilizer is more than or equal to 200 g.L on a dry basis -1 The organic matter content is 43.6-52.5 g.L -1 The total nitrogen content is 141-161 g.L -1 The total phosphorus content is 22.7-26.1 g.L -1 The total potassium content is 58.5-62.7g.L -1 The effective viable count is 0.297-0.323 hundred million g -1 The pH value is 6.92-7.66.
10. The biogas slurry organic fertilizer according to claim 9, wherein the biogas slurry organic fertilizer is used in one or more of the following (1) to (4):
(1) The yield of the Chinese cabbage is improved;
(2) The corn yield is improved;
(3) Improving fertility of soil;
(4) Antibacterial and insecticidal.
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