CN114195597A - Special organic fertilizer for saline-alkali soil improvement and preparation method thereof - Google Patents
Special organic fertilizer for saline-alkali soil improvement and preparation method thereof Download PDFInfo
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- CN114195597A CN114195597A CN202111618402.4A CN202111618402A CN114195597A CN 114195597 A CN114195597 A CN 114195597A CN 202111618402 A CN202111618402 A CN 202111618402A CN 114195597 A CN114195597 A CN 114195597A
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- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
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Abstract
The invention discloses a special organic fertilizer for saline-alkali soil improvement and a preparation method thereof, relating to the technical field of fertilizer preparation, wherein the organic fertilizer comprises the following raw materials: chicken manure, corn stalks, rice hulls, vinasse, plant ash, phosphogypsum, lemon residues, egg shell powder and a microbial decomposition agent. The preparation method of the organic fertilizer comprises the following steps: crushing and mixing corn straws, rice husks and egg shells, adding vinasse and lemon residues, crushing, and uniformly mixing with chicken manure, plant ash and phosphogypsum; adding a microbial decomposition agent, adding water and stirring uniformly to obtain a fermentation product; turning over the fermented material, inoculating microbial decomposition agent, fermenting at high temperature, aging and air drying to obtain the organic fertilizer product. According to the organic fertilizer prepared by the invention, chicken manure, corn straw and rice hull are added to provide rich nitrogen elements and carbon elements, and egg shells contain a large amount of calcium sources, proteins and trace elements; the organic fertilizer has complete nutrient elements and lasting fertilizer efficiency, improves the nutrient utilization efficiency, improves the saline-alkali soil and improves the crop quality.
Description
Technical Field
The invention relates to the technical field of fertilizer preparation, in particular to a special organic fertilizer for saline-alkali soil improvement and a preparation method thereof.
Background
The special organic fertilizer for improving the saline-alkali soil is prepared by fermenting raw materials of livestock and poultry manure, straws, rice hulls and other resource wastes, is natural and pollution-free, and has high nitrogen and organic matter contents. The organic fertilizer can improve soil hardening, loosen soil, increase porosity, promote soil air permeability, improve soil surface temperature and soil moisture, increase the variety and quantity of soil microbial communities, form dominant microbial communities, keep the balance of biological diversity, improve the utilization efficiency of organic fertilizer nutrients, and have the effects of water retention and fertilizer retention. In addition, organic acid generated in the organic fertilizer can neutralize free alkali in saline-alkali soil to replace sodium ions of the soil complex, egg shell powder added into the organic fertilizer enables free calcium ions and sodium ions to interact to replace exchangeable sodium ions, and the water and salt movement inhibition effect is stronger along with the increase of the content of organic matters.
According to the statistics of the textbook organization and the grain and agriculture organization of the united nations, the area of the saline-alkali area in China is as high as 9913 ten thousand hectares. The prior fertilizer is applied in large quantity, so that the soil salinization is serious, the soil hardening is caused, nutrient components are consolidated and precipitated, crops are not easy to absorb and utilize, the activity of microbial diversity is damaged, the content of organic matters is reduced, the utilization rate of the fertilizer is reduced, the growth and development of the crops are influenced, and the yield is low. Therefore, the saline-alkali soil improvement organic fertilizer without inorganic fertilizer is a key point of attention in a plurality of saline-alkali soil improvement fertilizers, is an important problem to be solved urgently in soil salinization, and is also a problem of shortage of cultivated area in the face of increasing food demand in China. Under the condition that the ecological environment is increasingly deteriorated, the soil environment is improved, and the sustainable benign development of the soil condition is realized. In the face of waiting for improvement of large-area salinized land in China, research and development of a special organic fertilizer for saline-alkali land is an important subject to be solved urgently in the process of improving saline-alkali land by using the fertilizer.
Disclosure of Invention
The invention aims to provide a special organic fertilizer for saline-alkali soil improvement and a preparation method thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a special organic fertilizer for saline-alkali soil improvement comprises the following raw materials in parts by weight: 55-65 parts of chicken manure, 10-20 parts of corn straw, 10-15 parts of rice hull, 1-3 parts of vinasse, 5-7 parts of plant ash, 15-20 parts of phosphogypsum, 20-40 parts of lemon residue, 8-10 parts of egg shell powder and 1.0-1.2 parts of microbial decomposition agent.
On the basis of the technical scheme, the invention also provides the following optional technical scheme:
in one alternative: the microbial decomposition agent comprises the following raw materials in parts by weight: 11 parts of aspergillus glaucus, 9 parts of polyporus pinus, 13 parts of lactobacillus rhamnosus, 10 parts of saccharomyces cerevisiae, 9 parts of bacillus megaterium and 5 parts of pseudomonas.
The preparation method of the organic fertilizer special for saline-alkali soil improvement comprises the following steps:
step 1: crushing dried corn straws and rice husks together, uniformly mixing, and sieving by a 40-60-mesh sieve to obtain a mixed material A for later use;
step 2: grinding and sieving 0.15mm of powder of egg shells, and putting the powder into the mixture A to be uniformly mixed to obtain a mixture B;
and step 3: crushing vinasse and lemon slag, uniformly mixing the crushed vinasse and lemon slag with chicken manure, plant ash and phosphogypsum, and standing for 4-6 hours to obtain a mixed material C;
and 4, step 4: uniformly mixing the mixed material B and the mixed material C to obtain a mixed material D;
and 5: adding the mixed material D into a microbial decomposition agent, adding water, uniformly stirring, keeping the water content of the raw materials at 50% -60% and the pH value at 5.5-7.0, stacking, naturally heating, and fermenting at low temperature; obtaining a fermentation product;
step 6: turning over the fermented material, inoculating microbial decomposing agent, mixing, and fermenting at high temperature;
and 7: after high-temperature fermentation, the fermented material is aged and air-dried to complete the fermentation and decomposition process of the organic fertilizer, so as to obtain a decomposed organic fertilizer;
and 8: and (3) continuously aging and air-drying the decomposed organic fertilizer until the humidity is 15%, and preparing the organic fertilizer into particles with the particle size of 1-3mm to obtain the organic fertilizer product.
In one alternative: mixing in the step 1, the step 2, the step 3 and the step 4 under stirring at the rotation speed of 300-500 r/min.
In one alternative: the fermentation tank temperature in the low-temperature fermentation is 20-35 ℃, the fermentation period is 7-10 days, and the pile is turned once every 2-3 days.
In one alternative: in the step 5, the microbial decay agent is diluted by water and then added into the raw materials which are stirred and mixed, and the weight ratio of the mixed raw materials to the microbes is 100: 1.0-100: 1.5.
In one alternative: in the high-temperature fermentation, the water content of the fermentation raw materials is 45-55%, the fermentation temperature is 40-70 ℃, the fermentation period is 15-20 days, and the pile is turned once every 2 days.
In one alternative: in the step 7, when the water content of the organic fertilizer is 30-35%, the internal temperature of the organic fertilizer is 28-32 ℃, and the organic fertilizer is fermented and decomposed.
Compared with the prior art, the invention has the following beneficial effects:
according to the organic fertilizer special for saline-alkali soil improvement, the added chicken manure, corn straws and rice hulls provide rich nitrogen elements and carbon elements for the organic fertilizer, and egg shells contain a large amount of calcium sources, 15% -17% of protein and trace elements (zinc, copper, manganese, iron and selenium). The organic fertilizer has complete nutrient elements and lasting fertilizer efficiency, improves the nutrient utilization efficiency, improves the saline-alkali soil and improves the crop quality. By using the organic fertilizer prepared by the invention, the application amount of the fertilizer is reduced, and the organic fertilizer is in a stable state under the action of microorganisms, so that the organic fertilizer is beneficial to absorption and utilization of crops, the utilization rate of the fertilizer is improved, and the pollution of the fertilizer entering lakes along with rainwater leaching to the environment is reduced; by applying the organic fertilizer, the physical properties of saline-alkali soil are improved, the soil granular structure is increased, the hole is increased by more than 80%, the internal small aperture is increased by more than 50%, and the looseness of the saline-alkali soil is improved.
Drawings
FIG. 1 is a schematic diagram of a preparation process of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments; in the drawings or the description, the same reference numerals are used for similar or identical parts, and the shape, thickness or height of each part may be enlarged or reduced in practical use. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Example one
A special organic fertilizer for saline-alkali soil improvement comprises the following raw materials in parts by weight: 55 parts of chicken manure, 10 parts of corn straw, 10 parts of rice hull, 1 part of vinasse, 5 parts of plant ash, 15 parts of phosphogypsum, 20 parts of lemon residue, 8 parts of egg shell powder and 1.0 part of microbial decomposition agent.
The microbial decomposition agent comprises the following raw materials in parts by weight: 11 parts of aspergillus glaucus, 9 parts of polyporus pinus, 13 parts of lactobacillus rhamnosus, 10 parts of saccharomyces cerevisiae, 9 parts of bacillus megaterium and 5 parts of pseudomonas.
The preparation method of the organic fertilizer special for saline-alkali soil improvement comprises the following steps:
step 1: crushing the dried corn straws and the rice hulls together, uniformly mixing, and sieving by a 40-mesh sieve to obtain a mixed material A for later use;
step 2: grinding and sieving 0.15mm of powder of egg shells, and putting the powder into the mixture A to be uniformly mixed to obtain a mixture B;
and step 3: crushing vinasse and lemon slag, uniformly mixing the crushed vinasse and lemon slag with chicken manure, plant ash and phosphogypsum, and standing for 4 hours to obtain a mixed material C;
and 4, step 4: uniformly mixing the mixed material B and the mixed material C to obtain a mixed material D;
and 5: adding a microbial decomposition agent into the mixed material D, adding water, stirring uniformly, keeping the water content of the raw materials at 50% and the pH value at 5.5, stacking, naturally heating, controlling the temperature of a fermentation tank at 20 ℃, controlling the fermentation period to be 7 days, and turning the piles once every 2 days until low-temperature fermentation is finished; obtaining a fermentation product;
step 6: turning the fermented material, inoculating microbial decomposition agent, mixing, and fermenting at high temperature at 40 deg.C for 15 days while maintaining the water content of the fermented material at 45% and once every 2 days;
and 7: after high-temperature fermentation, aging and air-drying the fermented material to finish the fermentation and decomposition process of the organic fertilizer, and when the water content of the organic fertilizer is 30%, the internal temperature of the organic fertilizer is 28 ℃ to obtain the decomposed organic fertilizer;
and 8: and (3) continuously aging and air-drying the decomposed organic fertilizer until the humidity is 15%, and preparing the organic fertilizer into particles with the particle size of 1mm to obtain the organic fertilizer product.
And mixing in the step 1, the step 2, the step 3 and the step 4 under stirring at the rotating speed of 300 r/min.
In the step 5, the microbial decay agent is diluted by water and then added into the raw materials which are stirred and mixed, and the weight ratio of the mixed raw materials to the microbes is 100:1.
Example two
A special organic fertilizer for saline-alkali soil improvement comprises the following raw materials in parts by weight: 58 parts of chicken manure, 12 parts of corn straw, 11 parts of rice hull, 1.5 parts of vinasse, 5.5 parts of plant ash, 16 parts of phosphogypsum, 25 parts of lemon slag, 8.5 parts of egg shell powder and 1.05 parts of microbial decomposition agent.
The microbial decomposition agent comprises the following raw materials in parts by weight: 11 parts of aspergillus glaucus, 9 parts of polyporus pinus, 13 parts of lactobacillus rhamnosus, 10 parts of saccharomyces cerevisiae, 9 parts of bacillus megaterium and 5 parts of pseudomonas.
A preparation method of the special organic fertilizer for saline-alkali soil improvement as claimed in claim 1, comprising the following steps:
step 1: crushing dried corn straws and rice husks together, uniformly mixing, and sieving by a 50-mesh sieve to obtain a mixed material A for later use;
step 2: grinding and sieving 0.15mm of powder of egg shells, and putting the powder into the mixture A to be uniformly mixed to obtain a mixture B;
and step 3: crushing vinasse and lemon slag, uniformly mixing the crushed vinasse and lemon slag with chicken manure, plant ash and phosphogypsum, and standing for 5 hours to obtain a mixed material C;
and 4, step 4: uniformly mixing the mixed material B and the mixed material C to obtain a mixed material D;
and 5: adding a microbial decomposition agent into the mixed material D, adding water, stirring uniformly, keeping the water content of the raw materials at 55% and the pH value at 6, stacking, naturally heating, allowing the fermentation tank to be at 25 ℃, allowing the fermentation period to be 8 days, and turning over the pile once every 3 days until low-temperature fermentation is completed; obtaining a fermentation product;
step 6: turning the fermented material, inoculating microbial decomposition agent, mixing, and fermenting at high temperature, wherein the water content of the fermented material is 50%, the fermentation temperature is 50 deg.C, the fermentation period is 17 days, and turning once every 2 days;
and 7: after high-temperature fermentation, aging and air-drying the fermented material to finish the fermentation and decomposition process of the organic fertilizer, and when the water content of the organic fertilizer is 32%, the internal temperature of the organic fertilizer is 29 ℃ to obtain the decomposed organic fertilizer;
and 8: and (3) continuously aging and air-drying the decomposed organic fertilizer until the humidity is 15%, and preparing the organic fertilizer into particles with the particle size of 2mm to obtain the organic fertilizer product.
And mixing in the step 1, the step 2, the step 3 and the step 4 under stirring at the rotating speed of 350 r/min.
In the step 5, the microbial decay agent is diluted by water and then added into the raw materials which are stirred and mixed, and the weight ratio of the mixed raw materials to the microbes is 100: 1.0.
EXAMPLE III
A special organic fertilizer for saline-alkali soil improvement comprises the following raw materials in parts by weight: 60 parts of chicken manure, 14 parts of corn straw, 12 parts of rice hull, 2 parts of vinasse, 3 parts of plant ash, 18 parts of phosphogypsum, 30 parts of lemon residue, 9 parts of egg shell powder and 1.1 parts of microbial decomposition agent.
The microbial decomposition agent comprises the following raw materials in parts by weight: 11 parts of aspergillus glaucus, 9 parts of polyporus pinus, 13 parts of lactobacillus rhamnosus, 10 parts of saccharomyces cerevisiae, 9 parts of bacillus megaterium and 5 parts of pseudomonas.
A preparation method of the special organic fertilizer for saline-alkali soil improvement as claimed in claim 1, comprising the following steps:
step 1: crushing the dried corn straws and the rice hulls together, uniformly mixing, and sieving by a 40-mesh sieve to obtain a mixed material A for later use;
step 2: grinding and sieving 0.15mm of powder of egg shells, and putting the powder into the mixture A to be uniformly mixed to obtain a mixture B;
and step 3: crushing vinasse and lemon slag, uniformly mixing the crushed vinasse and lemon slag with chicken manure, plant ash and phosphogypsum, and standing for 6 hours to obtain a mixed material C;
and 4, step 4: uniformly mixing the mixed material B and the mixed material C to obtain a mixed material D;
and 5: adding a microbial decomposition agent into the mixed material D, adding water, stirring uniformly, keeping the water content of the raw material at 60% and the pH value at 7.0, stacking, naturally heating, controlling the temperature of a fermentation tank at 30 ℃, controlling the fermentation period at 9 days, and turning the pile once every 3 days until low-temperature fermentation is completed; obtaining a fermentation product;
step 6: turning the fermented material, inoculating microbial decomposition agent, mixing, and fermenting at high temperature at 60 deg.C for 18 days while controlling water content of the fermented material at 50% and once every 2 days;
and 7: after high-temperature fermentation, aging and air-drying the fermented material to finish the fermentation and decomposition process of the organic fertilizer, and when the water content of the organic fertilizer is 33%, the internal temperature of the organic fertilizer is 30 ℃ to obtain the decomposed organic fertilizer;
and 8: and (3) continuously aging and air-drying the decomposed organic fertilizer until the humidity is 15%, and preparing the organic fertilizer into particles with the particle size of 1-3mm to obtain the organic fertilizer product.
And mixing in the step 1, the step 2, the step 3 and the step 4 under stirring at the rotating speed of 400 r/min.
In the step 5, the microbial decay agent is diluted by water and then added into the raw materials which are stirred and mixed, and the weight ratio of the mixed raw materials to the microbes is 100: 1.5.
Example four
A special organic fertilizer for saline-alkali soil improvement comprises the following raw materials in parts by weight: 63 parts of chicken manure, 17 parts of corn straw, 14 parts of rice hull, 2.5 parts of vinasse, 6.5 parts of plant ash, 19 parts of phosphogypsum, 35 parts of lemon slag, 9.5 parts of egg shell powder and 1.15 parts of microbial decomposition agent.
The microbial decomposition agent comprises the following raw materials in parts by weight: 11 parts of aspergillus glaucus, 9 parts of polyporus pinus, 13 parts of lactobacillus rhamnosus, 10 parts of saccharomyces cerevisiae, 9 parts of bacillus megaterium and 5 parts of pseudomonas.
A preparation method of the special organic fertilizer for saline-alkali soil improvement as claimed in claim 1, comprising the following steps:
step 1: crushing the dried corn straws and the rice hulls together, uniformly mixing, and sieving by a 40-mesh sieve to obtain a mixed material A for later use;
step 2: grinding and sieving 0.15mm of powder of egg shells, and putting the powder into the mixture A to be uniformly mixed to obtain a mixture B;
and step 3: crushing vinasse and lemon slag, uniformly mixing the crushed vinasse and lemon slag with chicken manure, plant ash and phosphogypsum, and standing for 4-6 hours to obtain a mixed material C;
and 4, step 4: uniformly mixing the mixed material B and the mixed material C to obtain a mixed material D;
and 5: adding a microbial decomposition agent into the mixed material D, adding water, stirring uniformly, keeping the water content of the raw material at 50% and the pH value at 5.5, stacking, naturally heating, keeping the temperature of a fermentation tank at 35 ℃, keeping the fermentation period at 7-10 days, and turning over once every 2-3 days until low-temperature fermentation is completed; obtaining a fermentation product;
step 6: turning the fermented material, inoculating microbial decomposition agent, mixing, and fermenting at high temperature at 60 deg.C for 19 days while maintaining the water content of the fermented material at 45% and once every 2 days;
and 7: after high-temperature fermentation, aging and air-drying the fermented material to finish the fermentation and decomposition process of the organic fertilizer, and when the water content of the organic fertilizer is 34%, the internal temperature of the organic fertilizer is 31 ℃ to obtain the decomposed organic fertilizer;
and 8: and (3) continuously aging and air-drying the decomposed organic fertilizer until the humidity is 15%, and preparing the organic fertilizer into particles with the particle size of 1mm to obtain the organic fertilizer product.
And mixing in the step 1, the step 2, the step 3 and the step 4 under stirring at the rotating speed of 450 r/min.
In the step 5, the microbial decay agent is diluted by water and then added into the raw materials which are stirred and mixed, and the weight ratio of the mixed raw materials to the microbes is 100: 1.0.
EXAMPLE five
A special organic fertilizer for saline-alkali soil improvement comprises the following raw materials in parts by weight: 65 parts of chicken manure, 20 parts of corn straw, 15 parts of rice hull, 3 parts of vinasse, 7 parts of plant ash, 20 parts of phosphogypsum, 40 parts of lemon residue, 10 parts of egg shell powder and 1.2 parts of microbial decomposition agent.
The microbial decomposition agent comprises the following raw materials in parts by weight: 11 parts of aspergillus glaucus, 9 parts of polyporus pinus, 13 parts of lactobacillus rhamnosus, 10 parts of saccharomyces cerevisiae, 9 parts of bacillus megaterium and 5 parts of pseudomonas.
A preparation method of the special organic fertilizer for saline-alkali soil improvement as claimed in claim 1, comprising the following steps:
step 1: crushing dried corn straws and rice husks together, uniformly mixing, and sieving by a 60-mesh sieve to obtain a mixed material A for later use;
step 2: grinding and sieving 0.15mm of powder of egg shells, and putting the powder into the mixture A to be uniformly mixed to obtain a mixture B;
and step 3: crushing vinasse and lemon slag, uniformly mixing the crushed vinasse and lemon slag with chicken manure, plant ash and phosphogypsum, and standing for 4-6 hours to obtain a mixed material C;
and 4, step 4: uniformly mixing the mixed material B and the mixed material C to obtain a mixed material D;
and 5: adding a microbial decomposition agent into the mixed material D, adding water, stirring uniformly, keeping the water content of the raw materials at 60% and the pH value at 7.0, stacking, naturally heating, keeping the temperature of a fermentation tank at 35 ℃, setting the fermentation period at 10 days, and turning the piles once every 3 days until low-temperature fermentation is completed; obtaining a fermentation product;
step 6: turning the fermented material, inoculating microbial decomposition agent, mixing, and fermenting at high temperature at 70 deg.C for 20 days while controlling water content of the fermented material at 55%, and turning once every 2 days;
and 7: after high-temperature fermentation, aging and air-drying the fermented material to finish the fermentation and decomposition process of the organic fertilizer, and when the water content of the organic fertilizer is 35%, the internal temperature of the organic fertilizer is 32 ℃ to obtain the decomposed organic fertilizer;
and 8: and (3) continuously aging and air-drying the decomposed organic fertilizer until the humidity is 15%, and preparing the organic fertilizer into particles with the particle size of 3mm to obtain the organic fertilizer product.
And mixing in the step 1, the step 2, the step 3 and the step 4 under stirring at the rotating speed of 500 r/min.
In the step 5, the microbial decay agent is diluted by water and then added into the raw materials which are stirred and mixed, and the weight ratio of the mixed raw materials to the microbes is 100: 1.5.
According to the organic fertilizer special for saline-alkali soil improvement, the added chicken manure, corn straws and rice hulls provide rich nitrogen elements and carbon elements for the organic fertilizer, and egg shells contain a large amount of calcium sources, 15% -17% of protein and trace elements (zinc, copper, manganese, iron and selenium). The organic fertilizer has complete nutrient elements and lasting fertilizer efficiency, improves the nutrient utilization efficiency, improves the saline-alkali soil and improves the crop quality. By using the organic fertilizer prepared by the invention, the application amount of the fertilizer is reduced, and the organic fertilizer is in a stable state under the action of microorganisms, so that the organic fertilizer is beneficial to absorption and utilization of crops, the utilization rate of the fertilizer is improved, and the pollution of the fertilizer entering lakes along with rainwater leaching to the environment is reduced; by applying the organic fertilizer, the physical properties of saline-alkali soil are improved, the soil granular structure is increased, the hole is increased by more than 80%, the internal small aperture is increased by more than 50%, and the looseness of the saline-alkali soil is improved.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (8)
1. The special organic fertilizer for saline-alkali soil improvement is characterized by comprising the following raw materials in parts by weight: 55-65 parts of chicken manure, 10-20 parts of corn straw, 10-15 parts of rice hull, 1-3 parts of vinasse, 5-7 parts of plant ash, 15-20 parts of phosphogypsum, 20-40 parts of lemon residue, 8-10 parts of egg shell powder and 1.0-1.2 parts of microbial decomposition agent.
2. The special organic fertilizer for improving saline-alkali soil according to claim 1, wherein the microbial decomposition agent comprises the following raw materials in parts by weight: 11 parts of aspergillus glaucus, 9 parts of polyporus pinus, 13 parts of lactobacillus rhamnosus, 10 parts of saccharomyces cerevisiae, 9 parts of bacillus megaterium and 5 parts of pseudomonas.
3. The preparation method of the special organic fertilizer for saline-alkali soil improvement according to claim 1, which is characterized by comprising the following steps: step 1: crushing dried corn straws and rice husks together, uniformly mixing, and sieving by a 40-60-mesh sieve to obtain a mixed material A for later use; step 2: grinding and sieving 0.15mm of powder of egg shells, and putting the powder into the mixture A to be uniformly mixed to obtain a mixture B; and step 3: crushing vinasse and lemon slag, uniformly mixing the crushed vinasse and lemon slag with chicken manure, plant ash and phosphogypsum, and standing for 4-6 hours to obtain a mixed material C; and 4, step 4: uniformly mixing the mixed material B and the mixed material C to obtain a mixed material D; and 5: adding the mixed material D into a microbial decomposition agent, adding water, uniformly stirring, keeping the water content of the raw materials at 50% -60% and the pH value at 5.5-7.0, stacking, naturally heating, and fermenting at low temperature; obtaining a fermentation product; step 6: turning over the fermented material, inoculating microbial decomposing agent, mixing, and fermenting at high temperature; and 7: after high-temperature fermentation, the fermented material is aged and air-dried to complete the fermentation and decomposition process of the organic fertilizer, so as to obtain a decomposed organic fertilizer; and 8: and (3) continuously aging and air-drying the decomposed organic fertilizer until the humidity is 15%, and preparing the organic fertilizer into particles with the particle size of 1-3mm to obtain the organic fertilizer product.
4. The method for preparing the organic fertilizer special for saline-alkali soil improvement as claimed in claim 3, wherein the mixing in the steps 1, 2, 3 and 4 is carried out under the stirring of the rotation speed of 300-500 r/min.
5. The preparation method of the organic fertilizer special for saline-alkali soil improvement, according to claim 3, is characterized in that the temperature of the fermentation tank in the low-temperature fermentation is 20-35 ℃, the fermentation period is 7-10 days, and the pile is turned over once every 2-3 days.
6. The preparation method of the special organic fertilizer for improving saline-alkali soil according to claim 3, wherein in the step 5, the microbial decomposition inoculant is diluted by water and then added into the raw materials which are stirred and mixed, and the weight ratio of the mixed raw materials to the direct microorganisms is 100: 1.0-100: 1.5.
7. The preparation method of the organic fertilizer special for saline-alkali soil improvement according to claim 3, wherein the water content of the fermentation raw materials in the high-temperature fermentation is 45-55%, the fermentation temperature is 40-70 ℃, the fermentation period is 15-20 days, and the pile turning is performed once every 2 days.
8. The preparation method of the organic fertilizer special for saline-alkali soil improvement according to claim 3, wherein in the step 7, when the water content of the organic fertilizer is 30-35%, the internal temperature of the organic fertilizer is 28-32 ℃, and the organic fertilizer is fermented and decomposed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115399173A (en) * | 2022-10-13 | 2022-11-29 | 兰州理工大学 | Ecological module for improving northwest saline-alkali soil and using method thereof |
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| CN105693395A (en) * | 2016-02-29 | 2016-06-22 | 赵洪军 | Organic fertilizer for improving saline soil and preparation method thereof |
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| CN105693395A (en) * | 2016-02-29 | 2016-06-22 | 赵洪军 | Organic fertilizer for improving saline soil and preparation method thereof |
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| CN115399173A (en) * | 2022-10-13 | 2022-11-29 | 兰州理工大学 | Ecological module for improving northwest saline-alkali soil and using method thereof |
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