CN111574283A - Microbial fertilizer and preparation method thereof - Google Patents
Microbial fertilizer and preparation method thereof Download PDFInfo
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- CN111574283A CN111574283A CN202010409522.2A CN202010409522A CN111574283A CN 111574283 A CN111574283 A CN 111574283A CN 202010409522 A CN202010409522 A CN 202010409522A CN 111574283 A CN111574283 A CN 111574283A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
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- 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
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- 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
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- 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
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- 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
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- 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
Abstract
The invention discloses a microbial fertilizer and a preparation method thereof, wherein the microbial fertilizer is prepared from the following raw materials in parts by weight: 2-8 parts of bacillus subtilis, 0.5-5 parts of bacillus licheniformis, 1-6 parts of bacillus amyloliquefaciens, 0.01-0.2 part of bacillus mucilaginosus and 0.05-0.6 part of bacillus methylotrophicus. Has the advantages that: the invention adopts a microbial formula, can solve a plurality of soil problems of soil hardening, soil-borne diseases, high acid, high alkali, high salt and the like, can avoid the excessive problem after the application of chemical fertilizers, effectively inhibits plant diseases and the breeding of harmful bacteria to plants or crops, and has long fertilizer effect period and wide application range.
Description
Technical Field
The invention relates to the technical field of fertilizers, in particular to a microbial fertilizer and a preparation method thereof.
Background
China has more population and less cultivated land, and the cultivated land is gradually reduced year by year along with the growth of population and the development of industry and cities. According to statistics of relevant departments, the population of China averagely increases by 1600 ten thousand per year, and cultivated land decreases by 400 ten thousand mu per year. 5.5 hundred million population in 1950, 16.5 hundred million cultivated land, 2.99 mu per capita cultivated land, 1.51 mu per capita cultivated land in 1980, and 1.1 mu per capita cultivated land in 1990, which is greatly lower than the level of 4.03 mu per capita cultivated land in the world and 2.1 mu per capita cultivated land in Asia. Therefore, the only feasible way for increasing the yield of agricultural products in China is to improve the yield per unit area. Can meet the requirements of industrial development and population increase on agricultural products, and the chemical fertilizer is also widely applied.
The problems of soil hardening, soil fertility reduction, ecological destruction, environmental pollution and agricultural and sideline product quality reduction caused by unreasonable use of chemical fertilizers for a long time are highly valued by relevant departments of China and the agricultural science and technology field. The large application of the chemical fertilizer causes the disadvantages of reduced soil fertility, soil hardening and continuously increased agricultural production cost. In recent decades, China has been struggling to explore effective ways of reasonably applying fertilizer, overcoming the disadvantages of chemical fertilizers and improving the utilization rate of chemical fertilizers.
The agricultural fertilizer comprises chemical fertilizer and biological fertilizer, and is an important production material which can not be replaced by agricultural production in China. Among them, biofertilizers, which are important branches of the agricultural bioengineering disciplines and important components of soil fertilization, have been rapidly developed in both basic research and application research in recent decades. The role of the microbial fertilizer (belonging to one of the biological fertilizers) in the agricultural fertilizer as an important agricultural technical measure in the development of high-yield, high-quality and high-efficiency agriculture is increasingly recognized, so that a considerable development space is provided for the development, popularization and application of the microbial fertilizer, particularly the irreplaceability in the development of organic agriculture and the production of A-grade and AA-grade green foods, and the potential charm of the microbial fertilizer is fully reflected.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a microbial fertilizer.
The invention realizes the purpose through the following technical scheme:
a microbial fertilizer is composed of the following raw materials in parts by weight: 2-8 parts of bacillus subtilis, 0.5-5 parts of bacillus licheniformis, 1-6 parts of bacillus amyloliquefaciens, 0.01-0.2 part of bacillus mucilaginosus and 0.05-0.6 part of bacillus methylotrophicus.
Further, the feed additive is composed of the following raw materials in parts by weight: 5 parts of bacillus subtilis, 2 parts of bacillus licheniformis, 3 parts of bacillus amyloliquefaciens, 0.05 part of bacillus mucilaginosus and 0.2 part of bacillus methylotrophicus.
Further, the microbial fertilizer also comprises phosphorus-solubilizing bacillus megaterium and aspergillus niger.
Furthermore, the microbial fertilizer is added with chelating biotransformation element, active agent, continuous cropping resistant agent, water-retaining agent, bacteriostat, disease-resistant factor, multiple trace elements or other additives.
The invention also provides a preparation method for preparing the microbial fertilizer, which comprises the following steps:
s1, selecting microbial strains according to the proportion and propagating;
s2, respectively introducing bacillus subtilis, bacillus licheniformis, bacillus amyloliquefaciens, bacillus mucilaginosus, bacillus methylotrophicus, bacillus megaterium phosphate and aspergillus niger into a fermentation tank for fermentation culture to obtain a microorganism fermentation liquid;
s3, pumping the microbial fermentation liquor into a mixing and precipitating tank, and flocculating and precipitating the microbial fermentation liquor by using a flocculating agent;
s4, centrifuging the microbial fermentation liquor flocculated and precipitated by the flocculating agent by using a centrifugal machine to obtain concentrated microbial fermentation liquor;
s5, pumping the concentrated microbial fermentation liquor obtained in the step S4 into a mixing tank for adsorption treatment, adding a proper amount of bentonite, chelating biotransformation elements, active agents, continuous cropping resistant agents, water retention agents, bacteriostats, disease-resistant factors, trace elements and other additives into the adsorbed microbial fermentation liquor, and uniformly stirring;
s6, drying the mixture mixed by the mixing tank until the water content is lower than 3%, and then putting the mixture into a granulator for granulation to obtain microbial fertilizer granules;
s7, or pumping the concentrated microbial fermentation liquid obtained in the step S4 into a mixing tank for adsorption, mixing and powder making, and drying the powder mixed in the mixing tank at medium temperature through a dryer to obtain the powder microbial fertilizer.
Further, in the step S2, the fermentation condition is that the mixture is heated to 30-40 ℃, and the fermentation is continued for 3-5 days, and the mixture is stirred once every 8-10 h.
Further, in the step S3, the flocculant is a mixture of polyferric phosphate sulfate and polyacrylamide.
Furthermore, in the step S5, the ratio of the bentonite to the concentrated microorganism fermentation liquor is (7-10): 1.
Further, in the step S6, the diameter of the particles is 3-7 mm.
The raw material analysis of the present invention is as follows:
b, bacillus subtilis: the bacillus subtilis successfully colonizes the rhizosphere, the body surface or the body of the plant, competes with pathogenic bacteria for nutrition around the plant, secretes antibacterial substances to inhibit the growth of the pathogenic bacteria, and induces a plant defense system to resist the invasion of the pathogenic bacteria, thereby achieving the purpose of biological control. The bacillus subtilis can mainly inhibit various plant diseases caused by plant pathogenic bacteria such as filamentous fungi. The reported bacillus subtilis strains separated and screened from rhizosphere soil, root surfaces, plants and leaves of crops have antagonistic action on a plurality of fungal and bacterial diseases of different crops. Such as rice sheath blight disease, rice blast, wheat sheath blight disease, and bean root rot in food crops. Tomato leaf disease, fusarium wilt, cucumber fusarium wilt, downy mildew, eggplant gray mold and powdery mildew, pepper phytophthora blight and the like in vegetable diseases. The bacillus subtilis can also control various epidemic diseases of picked fruits such as apple mildew, citrus penicilliosis, nectarine brown rot, strawberry gray mold and powdery mildew, banana wilt, crown rot, anthracnose, apple pear penicilliosis, black spot, canker and golden flower pear fruit rot. In addition, the bacillus subtilis also has better control effects on poplar canker, rot, tree black spot, anthracnose, tea leaf spot, tobacco anthracnose, black shank, alternaria alternate, root rot, cotton rhizoctonia rot, fusarium wilt and the like.
B, bacillus licheniformis: can regulate dysbacteriosis to achieve therapeutic effect, and can promote organism to produce antibacterial active substance and kill pathogenic bacteria. Can produce active resisting matter, has unique biological oxygen-taking action mechanism and can inhibit the growth and propagation of pathogenic bacteria.
B, bacillus amyloliquefaciens: the bacillus subtilis is a bacterium with high affinity with bacillus subtilis, can generate a series of metabolites capable of inhibiting the activity of fungi and bacteria in the growth process, can inhibit pathogenic bacteria, and can keep fruits and vegetables fresh.
B, Bacillus mucilaginosus: decomposing potassium and silicon in minerals such as feldspar, mica and the like, decomposing phosphorus in apatite, having the functions of dissolving phosphorus, releasing potassium and fixing nitrogen, and simultaneously generating substances such as organic acid, amino acid, polysaccharide, hormone and the like which are beneficial to plant absorption and utilization in the growth and propagation processes; the product can secrete plant growth hormone and multiple enzymes after propagating in soil to enhance the resistance of crops to some diseases; also inhibit the growth of other pathogenic bacteria; after the dead bacteria, the potassium in the bacteria is dissociated and can be absorbed and utilized by plants. As an important functional bacterium in microbial fertilizer, the fertilizer can improve the content of quick-acting potassium and phosphorus in soil, and improve the yield and quality of crops.
Bacillus methylotrophicus: one or more bacteriostatic metabolites produced by the growth and reproduction of the bacteria, and the bacteriostatic metabolites play a role similar to antibiotics and have broad-spectrum antibacterial property.
B, phosphate-solubilizing bacillus megaterium: decomposing the organic phosphorus in the soil into quick-acting phosphorus available for plants.
Aspergillus niger: aspergillus niger has the characteristic of producing high-activity cellulase, and the cellulase is favorable for decomposition and conversion of organic matters in soil, formation of humus and formation and release of carbonized humus.
Chelating biotransformation hormone: has super-strong moisture retention and adsorptivity, and can improve the comprehensive utilization rate of nitrogen, phosphorus and potassium.
Active agent(s): can activate the nitrogen, phosphorus and potassium fixed by cations, thereby being fully absorbed and utilized by crops
Anti-continuous cropping agent: the microbial agent is used for treating the problems of unbalanced soil microbial state, low fertilizer utilization rate, soil hardening and the like caused by long-term continuous cropping and single fertilizer application in the traditional agricultural production.
The invention has the beneficial effects that: the invention adopts a microbial formula, can solve a plurality of soil problems of soil hardening, soil-borne diseases, high acid, high alkali, high salt and the like, can avoid the excessive problem after the application of chemical fertilizers, effectively inhibits plant diseases and the breeding of harmful bacteria to plants or crops, and has long fertilizer effect period and wide application range.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a microbial fertilizer is composed of the following raw materials in parts by weight: 5 parts of bacillus subtilis, 2 parts of bacillus licheniformis, 3 parts of bacillus amyloliquefaciens, 0.05 part of bacillus mucilaginosus, 0.2 part of bacillus methylotrophicus, 2 parts of bacillus megaterium phosphate solubilizing, 0.5 part of aspergillus niger, 0.2 part of chelating biotransformation element, 0.3 part of active agent, 0.1 part of continuous cropping resistant agent, 0.4 part of water-retaining agent, 0.2 part of bacteriostatic element, 0.1 part of disease-resistant factor and 0.05 part of trace element.
Example two:
a microbial fertilizer is composed of the following raw materials in parts by weight: 3 parts of bacillus subtilis, 1 part of bacillus licheniformis, 2 parts of bacillus amyloliquefaciens, 0.03 part of bacillus mucilaginosus, 0.5 part of bacillus methylotrophicus, 2 parts of bacillus megaterium phosphate solubilizing, 0.5 part of aspergillus niger, 0.2 part of chelating biotransformation element, 0.3 part of active agent, 0.1 part of continuous cropping resistant agent, 0.4 part of water-retaining agent, 0.2 part of bacteriostatic element, 0.1 part of disease-resistant factor and 0.05 part of trace element.
Example three:
a microbial fertilizer is composed of the following raw materials in parts by weight: 8 parts of bacillus subtilis, 4 parts of bacillus licheniformis, 5.5 parts of bacillus amyloliquefaciens, 0.15 part of bacillus mucilaginosus, 0.3 part of bacillus methylotrophicus, 2 parts of bacillus megaterium phosphate solubilizing, 0.5 part of aspergillus niger, 0.2 part of chelating biotransformation element, 0.3 part of active agent, 0.1 part of continuous cropping resistant agent, 0.4 part of water retention agent, 0.2 part of bacteriostat, 0.1 part of disease-resistant factor and 0.05 part of trace element.
0.2 part of rooting agent can also be added into the fertilizer.
The invention also provides a preparation method for preparing the microbial fertilizer, which comprises the following steps:
s1, selecting microbial strains according to the proportion and propagating;
s2, respectively introducing bacillus subtilis, bacillus licheniformis, bacillus amyloliquefaciens, bacillus mucilaginosus, bacillus methylotrophicus, bacillus megaterium phosphate and aspergillus niger into a fermentation tank for fermentation culture to obtain a microorganism fermentation liquid;
s3, pumping the microbial fermentation liquor into a mixing and precipitating tank, and flocculating and precipitating the microbial fermentation liquor by using a flocculating agent;
s4, centrifuging the microbial fermentation liquor flocculated and precipitated by the flocculating agent by using a centrifugal machine to obtain concentrated microbial fermentation liquor;
s5, pumping the concentrated microorganism fermentation liquor obtained in the step S4 into a mixing tank for adsorption treatment, adding a proper amount of bentonite, chelating biotransformation element, an active agent, a continuous cropping resistant agent, a water-retaining agent, bacteriostat, a disease-resistant factor, trace elements, a rooting agent and other additives into the adsorbed microorganism fermentation liquor, and uniformly stirring;
s6, drying the mixture mixed by the mixing tank until the water content is lower than 3%, and then putting the mixture into a granulator for granulation to obtain microbial fertilizer granules;
s7, or pumping the concentrated microbial fermentation liquid obtained in the step S4 into a mixing tank for adsorption, mixing and powder making, and drying the powder mixed in the mixing tank at medium temperature through a dryer to obtain the powder microbial fertilizer.
In this embodiment, in step S2, the fermentation conditions are heating to 30-40 ℃, and continuing the fermentation for 3-5 days, with stirring once every 8-10 h.
In this embodiment, in the step S3, the flocculant is a mixture of polyferric phosphate sulfate and polyacrylamide.
In this embodiment, in the step S5, the ratio of the bentonite to the concentrated microbial fermentation broth is 8: 1.
In this embodiment, in step S6, the diameter of the particles is 3 to 7 mm.
The usage and dosage are as follows:
80-160kg of grain crops such as corn, rice, soybean, wheat and the like per hectare.
160-240kg of economic crops such as melons, fruits, vegetables, fruit trees, cotton and the like per hectare.
Field crops: 120kg of microbial fertilizer (320 kg of mixed fertilizer) prepared by the formula per hectare.
Note:
1. the microbial fertilizer prepared by the formula is mixed with compound fertilizer, mixed fertilizer diammonium and the like in advance, and is not dissolved or deliquesced;
2. is suitable for any soil (saline-alkali soil, sandy soil, red loam soil, black land, etc.), can be mixed with various fertilizers for use, and can be applied in bottom, top dressing, water flush, hole application and top dressing.
3. The dosage of the microbial fertilizer prepared by the formula can be properly increased.
The microbial fertilizer of the first embodiment is prepared according to the weight ratio and is subjected to experiments.
Experiment 1 Effect on corn
5 kg of the fertilizer prepared in example 1 and 5 kg of Stahly compound fertilizer (nitrogen 15%, phosphorus 15%, potassium 15%) were applied per mu as experimental groups. Meanwhile, 10 kg of stahly compound fertilizer (nitrogen 15%, phosphorus 15%, potassium 15%) per mu was used as a control group. The experimental group and the control group are five mu each. The fertilization time is as follows: before planting, in the growing period and in the fruiting period.
On day 23 after fertilization, maize jointing of the experimental group began; while the control group of corn did not begin jointing.
On 46 th day after fertilization, the experimental group began to extract maize filament and appeared male pollen at the top; in the control group, the straws of the experimental group are obviously stronger than those of the control group in the growth period.
Harvesting: the yield per mu of the experimental group is 959 kg, while the yield per mu of the control group is 870 kg, which is increased by 10%.
And (4) conclusion: the invention can obviously improve the yield of the corn.
Experiment 2 Effect on Soybean
5 kg of the fertilizer prepared in example 1 and 5 kg of Stahly compound fertilizer (nitrogen 15%, phosphorus 15%, potassium 15%) were applied per mu as experimental groups. Meanwhile, 10 kg of stahly compound fertilizer (nitrogen 15%, phosphorus 15%, potassium 15%) per mu was used as a control group. The experimental group and the control group are five mu each. The fertilization time is as follows: before planting, in the growing period and in the fruiting period.
On the 40 th day after fertilization, the soybeans of the experimental group are branched, the buds of the top stems are dense, and the flowers begin to form; while the soybean of the control group showed shoots and no flowers.
At day 55 after fertilization, both the experimental and control groups began to pod and the pod size in the experimental group was significantly larger than that in the control group.
Harvesting: the yield per mu of the experimental group is 492 kilograms, while the yield per mu of the control group is 420 kilograms, which is increased by 17 percent.
And (4) conclusion: the invention can obviously improve the yield of soybean.
Experiment 3 Effect on Rice
5 kg of the fertilizer prepared in example 1 and 5 kg of Stahly compound fertilizer (nitrogen 15%, phosphorus 15%, potassium 15%) were applied per mu as experimental groups. Meanwhile, 10 kg of stahly compound fertilizer (nitrogen 15%, phosphorus 15%, potassium 15%) per mu was used as a control group. The experimental group and the control group are five mu each. The fertilization time is as follows: before planting, in the growing period and in the fruiting period.
And (3) tillering the paddy rice of the experimental group and the paddy rice of the control group 30 days after the fertilization, tillering 1-2 more paddy rice plants of the experimental group than the paddy rice of the control group, and developing the paddy rice root system of the experimental group obviously than that of the control group.
80 days after fertilization, the rice in the experimental group is mature, and the seedling stems are strong and lodging resistant; while the control group was in the grouting phase.
Harvesting: the yield per mu of the experimental group is 1175 kg, while the yield per mu of the control group is 923 jin, which increases 27%.
And (4) conclusion: the invention can obviously improve the yield of rice.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (9)
1. A microbial fertilizer is characterized in that: the composition is characterized by comprising the following raw materials in parts by weight: 2-8 parts of bacillus subtilis, 0.5-5 parts of bacillus licheniformis, 1-6 parts of bacillus amyloliquefaciens, 0.01-0.2 part of bacillus mucilaginosus and 0.05-0.6 part of bacillus methylotrophicus.
2. A microbial fertilizer according to claim 1, wherein: the composition is characterized by comprising the following raw materials in parts by weight: 5 parts of bacillus subtilis, 2 parts of bacillus licheniformis, 3 parts of bacillus amyloliquefaciens, 0.05 part of bacillus mucilaginosus and 0.2 part of bacillus methylotrophicus.
3. A microbial fertilizer according to claim 1 or 2, wherein: the microbial fertilizer also comprises phosphorus-solubilizing bacillus megaterium and aspergillus niger.
4. A microbial fertilizer according to claim 1 or 2, wherein: the microbial fertilizer is added with chelating biotransformation element, active agent, continuous cropping resisting agent, water-retaining agent, bacteriostat, disease-resistant factor, multiple trace elements or other additives.
5. A process for the preparation of a microbial fertilizer according to any one of claims 1 or 2, characterized in that: the method comprises the following steps:
s1, selecting microbial strains according to the proportion and propagating;
s2, respectively introducing bacillus subtilis, bacillus licheniformis, bacillus amyloliquefaciens, bacillus mucilaginosus, bacillus methylotrophicus, bacillus megaterium phosphate and aspergillus niger into a fermentation tank for fermentation culture to obtain a microorganism fermentation liquid;
s3, pumping the microbial fermentation liquor into a mixing and precipitating tank, and flocculating and precipitating the microbial fermentation liquor by using a flocculating agent;
s4, centrifuging the microbial fermentation liquor flocculated and precipitated by the flocculating agent by using a centrifugal machine to obtain concentrated microbial fermentation liquor;
s5, pumping the concentrated microbial fermentation liquor obtained in the step S4 into a mixing tank for adsorption treatment, adding a proper amount of bentonite, chelating biotransformation elements, active agents, continuous cropping resistant agents, water retention agents, bacteriostats, disease-resistant factors, trace elements and other additives into the adsorbed microbial fermentation liquor, and uniformly stirring;
s6, drying the mixture mixed by the mixing tank until the water content is lower than 3%, and then putting the mixture into a granulator for granulation to obtain microbial fertilizer granules;
s7, or pumping the concentrated microbial fermentation liquid obtained in the step S4 into a mixing tank for adsorption, mixing and powder making, and drying the powder mixed in the mixing tank at medium temperature through a dryer to obtain the powder microbial fertilizer.
6. A microbial fertilizer according to claim 5, wherein: in the step S2, the fermentation condition is that the mixture is heated to 30-40 ℃ and continuously fermented for 3-5 days, and the mixture is stirred once every 8-10 h.
7. A microbial fertilizer according to claim 5, wherein: in the step S3, the flocculant is a mixture of polyferric phosphate sulfate and polyacrylamide.
8. A microbial fertilizer according to claim 5, wherein: in the step S5, the ratio of the bentonite to the concentrated microorganism fermentation liquor is (7-10): 1.
9. A microbial fertilizer according to claim 5, wherein: in the step S6, the diameter of the particles is 3-7 mm.
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| CN112759433A (en) * | 2021-03-16 | 2021-05-07 | 河南新仰韶生物科技有限公司 | Compound bacterium for strawberries as well as preparation method and application thereof |
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