CN114716278A - Bulk blend fertilizer and preparation method thereof - Google Patents
Bulk blend fertilizer and preparation method thereof Download PDFInfo
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- CN114716278A CN114716278A CN202110406447.9A CN202110406447A CN114716278A CN 114716278 A CN114716278 A CN 114716278A CN 202110406447 A CN202110406447 A CN 202110406447A CN 114716278 A CN114716278 A CN 114716278A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- 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
- C05G3/80—Soil conditioners
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
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Abstract
The invention belongs to the technical field of fertilizers, and particularly relates to a bulk blend fertilizer and a preparation method thereof; the bulk blend fertilizer preparation raw material comprises the following components: 20-40 parts of organic fertilizer, 50-82 parts of inorganic fertilizer and 0.2-2 parts of biological fungus material; in the preparation method, the inorganic fertilizer is coated and completely isolated from the biological microbial inoculum after coating treatment, so that the dormant state of biological strains in the biological microbial inoculum is ensured at normal temperature; the organic-inorganic-biological bulk blend fertilizer provided by the invention not only can fully absorb nutrients of the organic-inorganic-biological bulk blend fertilizer by crops, but also can decompose and utilize solidified nutrients in soil, so that the contents of organic matters and biological flora in the soil are increased, and the structural environment of the soil is improved.
Description
Technical Field
The invention belongs to the technical field of fertilizers, and particularly relates to a bulk blend fertilizer and a preparation method thereof.
Background
In agricultural production, fertilizers are indispensable materials. Fertilizers, which can be divided into inorganic fertilizers and organic fertilizers; the inorganic fertilizer is a mineral substance or a fertilizer processed by inorganic chemical reaction; the organic fertilizer is prepared by processing animal manure, natural plant fermentation, industrial waste residues or domestic wastes.
In Chinese patent CN104447107A, an inorganic fertilizer containing plant ash is disclosed, and the technical proposal mentions that the inorganic fertilizer has the advantages of high nutrient content, quick fertilizer effect and convenient storage, transportation and application, but long-term use of the inorganic fertilizer can cause a great reduction in the amount of organic matters and beneficial bacteria in soil, resulting in hardening and acidification of the soil.
At present, the state advocates the use of organic fertilizers, thereby changing the soil structure; however, the quality of crops can be improved by singly using the organic fertilizer, but the yield is obviously reduced; although the application of the straws in the farmland can increase the organic matters of the soil, a large amount of inorganic elements are also needed in the straw decomposition process, so that the straws can be better and more quickly converted into nutrients which can be absorbed by crops.
The Chinese patent CN103992163B discloses the use of biological bacteria in organic and inorganic compound fertilizers, but in the technical scheme, the biological bacteria only play a role in the fermentation process of straws and do not play a role in improving the structure of soil after fertilization.
Therefore, the organic-inorganic-biological bulk blend fertilizer is provided, solves the problems of soil hardening and acidification, improves the soil structure and improves the quality and yield of crops, and is the problem to be solved at present.
Disclosure of Invention
In order to solve the problems, the invention provides a bulk blending fertilizer which comprises the following components in parts by weight: 20-40 parts of organic fertilizer, 50-82 parts of inorganic fertilizer and 0.2-2 parts of biological bacteria material.
Preferably, the content of organic matter in the organic fertilizer accounts for 15-50% of the weight of the organic fertilizer.
Preferably, the inorganic fertilizer comprises one or more of a nitrogen fertilizer, a phosphorus fertilizer and a potassium fertilizer.
Preferably, the nitrogen content in the nitrogen fertilizer is 10-40 wt%.
Preferably, the phosphorus content in the phosphorus fertilizer is 10-40 wt%.
Preferably, the phosphorus fertilizer is monoammonium phosphate.
Preferably, the potassium content in the potassium fertilizer is 40-80 wt%.
Preferably, the potash fertilizer comprises potassium chloride.
The invention provides a preparation method of a bulk blend fertilizer, which comprises the following steps:
s1, adding an inorganic fertilizer into a stirrer;
s2, adding the coating agent and the curing agent into a stirrer, and stirring for 5-20 min;
s3, packaging the stirred fertilizer to obtain a coated inorganic fertilizer;
s4, adding the coated inorganic fertilizer and the organic fertilizer into stirring, and mixing and stirring for 1-10min to obtain a bulk blended fertilizer A;
s5, weighing and packaging the biological fungus material and the bulk blend fertilizer A to obtain the bulk blend fertilizer.
Preferably, the coating agent in S2 includes a resin.
Advantageous effects
1. The organic-inorganic-biological blended fertilizer disclosed by the invention is adopted, so that the using amount of the fertilizer is reduced, the contents of organic matters and biological flora in soil are increased, and the soil structure is improved.
2. The organic-inorganic-biological bulk blend fertilizer can improve the quality of crops and increase the yield of the crops.
3. The organic-inorganic-biological bulk blended fertilizer is prepared by blending the raw materials at normal temperature by a dry method, and the inorganic raw material coating treatment is completely isolated from the biological microbial inoculum, so that the dormant state of biological strains in the biological microbial inoculum at normal temperature is ensured.
4. The organic-inorganic-biological bulk blend fertilizer not only can fully absorb nutrients of the organic-inorganic-biological bulk blend fertilizer by crops, but also can decompose and utilize solidified nutrients in soil, so that beneficial floras are gradually increased, and the soil structure is fully improved.
Detailed Description
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.
The words "preferred", "more preferred", and the like, in the present invention refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
The invention provides a bulk blend fertilizer which comprises the following raw materials in parts by weight: 20-40 parts of organic fertilizer, 50-82 parts of inorganic fertilizer and 0.2-2 parts of biological fungus material.
In one embodiment, the organic matter content of the organic matter fertilizer is 15-50% by weight of the organic matter fertilizer.
In a preferred embodiment, the organic matter content of the organic matter fertilizer is 30-45% by weight of the organic matter fertilizer.
In a more preferred embodiment, the organic matter content of the organic matter fertilizer is 45% by weight of the organic matter fertilizer.
In a preferred embodiment, the organic fertilizer purchase manufacturer is Hengwang agriculture technology, Inc. of Zhengdingcounty, model number 01.
In one embodiment, the inorganic fertilizer comprises one or more of a nitrogen fertilizer, a phosphorous fertilizer, a potassium fertilizer.
In one embodiment, the inorganic fertilizer is a mixture of a nitrogen fertilizer, a phosphorus fertilizer, and a potassium fertilizer.
In one embodiment, the weight ratio of the nitrogen fertilizer, the phosphorus fertilizer and the potassium fertilizer is (30-40): (15-30): (5-12).
In a preferred embodiment, the weight ratio of the nitrogen fertilizer to the phosphorus fertilizer to the potassium fertilizer is (33-38): (20-28): (6-10).
In a more preferred embodiment, the weight ratio of the nitrogen fertilizer to the phosphorus fertilizer to the potassium fertilizer is 35: 23: 8.
in one embodiment, the nitrogen content of the nitrogen fertilizer is 10 to 40 wt%.
In a preferred embodiment, the nitrogen content of the nitrogen fertilizer is 22%.
In one embodiment, the nitrogen fertilizer purchase is jinxin fertilizer ltd, shijiazhuan.
In one embodiment, the phosphorus content of the phosphorus fertilizer is from 10 to 40 wt%.
In one embodiment, the phosphorous fertilizer is monoammonium phosphate.
In one embodiment, the monoammonium phosphate purchaser is biosciences, Inc. of Yibang, GmbH.
In one embodiment, the potassium content in the potassium fertilizer is 40-80 wt%.
In one embodiment, the potassium fertilizer is potassium chloride.
In one embodiment, the potassium chloride is purchased from Shandong Yunsheng chemical technology, Inc. under model number YS-26.
The invention provides a preparation method of a bulk blend fertilizer, which comprises the following steps:
s1, adding an inorganic fertilizer into a stirrer;
s2, adding the coating agent and the curing agent into a stirrer, and stirring for 5-20 min;
s3, packaging the stirred fertilizer to obtain a coated inorganic fertilizer;
s4, adding the coated inorganic fertilizer and the organic fertilizer into stirring, and mixing and stirring for 1-10min to obtain a bulk blended fertilizer A;
s5, weighing and packaging the biological fungus material and the bulk blend fertilizer A to obtain the bulk blend fertilizer.
In one embodiment, the biological bacterial material comprises viable bacillus subtilis bacteria.
In one embodiment, the number of effective viable bacteria of Bacillus subtilis in the biological bacterial material is more than or equal to 200 hundred million/g.
In one embodiment, the biological fimbrial purchaser is a pilot plant, model 545.
In one embodiment, the coating agent in S2 comprises resin, polyaspartic acid, and chelated trace element gelatin.
In one embodiment, the resin is an epoxy resin.
In one embodiment, the epoxy resin purchaser is ZG-009, a product of Beijing, Guangyong Chuangchu technology Ltd.
In one embodiment, the polyaspartic acid purchaser is Sinkiang magnificent Biotech, Inc. model L-aspartic acid 99% by mass.
In one embodiment, the curing agent is selected from one or more of fatty amines, polyamide-polyamines, cycloaliphatic polyamines.
In one embodiment, the aliphatic amine is one or more of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, diethylaminopropylamine, ethylenediamine.
In one embodiment, the cycloaliphatic polyamine is selected from bis (4-amino-3-methylcyclohexyl) methane or bis (4-aminocyclohexyl) methane.
In one embodiment, the curing agent is bis (4-amino-3-methylcyclohexyl) methane.
In one embodiment, the bis (4-amino-3-methylcyclohexyl) methane is purchased from Hubei Jiu Fenglong chemical Co., Ltd, in an amount of 99% by mass.
In one embodiment, the chelated trace element gelatin comprises the chelating agent EDTA, trace element zinc sulfate, ferrous sulfate, magnesium sulfate, copper sulfate, and the like.
The preparation method of the chelated trace element gelatin comprises the following steps:
step 1, adding trace elements zinc sulfate, ferrous sulfate, magnesium sulfate and copper sulfate into a stirring device;
and 2, adding the chelating agent into a stirring device, and stirring for 1-30min to obtain the chelated trace element gelatin.
In one embodiment, the chelating agent is disodium edetate.
The currently used organic fertilizer, whether granular or powdery, can kill biological viable bacteria at a high temperature of 60 ℃; and when the moisture in the fertilizer is relatively high and the humidity is 15-30%, biological bacteria in the fertilizer can actively propagate in the packaging bag in advance, and biological viable bacteria in a closed space are easy to die.
The applicant finds that after the surface of the inorganic fertilizer is coated by the coating agent, the moisture content of the inorganic fertilizer can be reduced, nitrogen, phosphorus and potassium in the inorganic fertilizer can be completely isolated from the biological microbial inoculum, high-temperature stirring is not needed in the processing process of the blended fertilizer, a dormant environment can be provided for biological strains, the biological strains in the biological microbial inoculum in the blended fertilizer are fully utilized in the soil, and the number of beneficial microbial communities in the soil is increased.
The applicant finds that the content of the inorganic fertilizer in the bulk blend fertilizer is high, but the organic fertilizer, the inorganic fertilizer and the biological agent are mutually fused, so that the effect is good when the bulk blend fertilizer is used in soil, the nutrients in the bulk blend fertilizer are fully absorbed in the soil, the solidified nutrients in the soil can be decomposed and utilized, beneficial bacteria groups in the soil are gradually increased, harmful bacteria are continuously reduced, and the soil is fully improved.
Examples
Example 1
The bulk blending fertilizer comprises the following components in parts by weight: 33 parts of organic fertilizer, 35 parts of nitrogenous fertilizer, 23 parts of monoammonium phosphate, 8 parts of potassium chloride and 1 part of biological fungus material.
A method for preparing a bulk blend fertilizer, comprising the steps of:
s1, adding 35 parts of nitrogenous fertilizer, 23 parts of monoammonium phosphate and 8 parts of potassium chloride into a stirrer;
s2, adding 4 parts of epoxy resin, 5 parts of polyaspartic acid, 8 parts of chelated trace element gelatin and 2 parts of bis (4-amino-3-methylcyclohexyl) methane into a stirrer, and stirring for 10 min;
s3, packaging the stirred fertilizer to obtain a coated inorganic fertilizer;
s4, adding 66 parts of coated inorganic fertilizer and 33 parts of organic fertilizer into the stirrer, and mixing and stirring for 5min to obtain blended fertilizer A;
s5, weighing and packaging 1 part of biological fungus material and the bulk blend fertilizer A to obtain the bulk blend fertilizer.
The preparation method of the chelated trace element gelatin comprises the following steps:
step 1, adding 2 parts of trace elements zinc sulfate, 3 parts of ferrous sulfate, 2.5 parts of magnesium sulfate and 3.5 parts of copper sulfate into a stirring device;
and 2, adding 2 parts of disodium ethylene diamine tetraacetate into a stirring device, and stirring for 1-30min to obtain the chelated trace element gelatin.
The effective viable count of the bacillus subtilis in the biological fungus material is 200 hundred million/g.
The biological bacterium material purchasing manufacturer is an Weifang agriculture biological technology limited company with the model of 545.
The organic fertilizer purchasing manufacturer is Hengwang agriculture science and technology company Limited in Zhengdingcounty, and the model is 01.
The nitrogen fertilizer purchasing manufacturer is Jinxin fertilizer industry Co Ltd in Shijiazhuan city, and the nitrogen content is 22%.
The monoammonium phosphate purchasing manufacturer is Wuhan Jixin Yibang Biotech Co.
The potassium chloride purchasing manufacturer is Shandong Yunsheng chemical technology Co., Ltd, and the model is YS-26.
The epoxy resin purchasing manufacturer is ZG-009, a light entrepreneurial science and technology company Limited, disputed in Beijing.
The bis (4-amino-3-methylcyclohexyl) methane was purchased from Hubei Jiu Fenglong chemical Co., Ltd.
The polyaspartic acid purchasing manufacturer is Sinkiang magnificent Biotech limited company, and the model is L-aspartic acid.
Example 2
The bulk blending fertilizer comprises the following components in parts by weight: 33 parts of organic fertilizer, 35 parts of nitrogenous fertilizer, 23 parts of monoammonium phosphate, 8 parts of potassium chloride and 1 part of biological fungus material.
A method for preparing a bulk blend fertilizer, comprising the steps of:
s1, adding 35 parts of nitrogenous fertilizer, 23 parts of monoammonium phosphate, 8 parts of potassium chloride and 33 parts of organic fertilizer into a stirrer, and stirring for 5min to obtain a mixed fertilizer A;
s2, weighing and packaging 1 part of the biological fungus material and the bulk blend fertilizer A to obtain the bulk blend fertilizer.
The effective viable count of the bacillus subtilis in the biological fungus material is 200 hundred million/g.
The biological bacterium material purchasing manufacturer is an Weifang agriculture biological technology limited company with the model of 545.
The organic fertilizer purchasing manufacturer is Hengwang agriculture science and technology company Limited in Zhengdingcounty, and the model is 01.
The nitrogen fertilizer purchasing manufacturer is Jinxin fertilizer industry Co Ltd in Shijiazhuan city, and the nitrogen content is 22%.
The monoammonium phosphate purchasing manufacturer is Wuhan Jixin Yibang Biotech Co.
The potassium chloride purchasing manufacturer is Shandong Yunsheng chemical technology Co., Ltd, and the model is YS-26.
Comparative example 1
The bulk blending fertilizer comprises the following components in parts by weight: 33 parts of organic fertilizer, 35 parts of nitrogenous fertilizer, 23 parts of monoammonium phosphate, 8 parts of potassium chloride and 1 part of biological fungus material.
A method for preparing a bulk blend fertilizer, comprising the steps of:
s1, adding 35 parts of nitrogenous fertilizer, 23 parts of monoammonium phosphate and 8 parts of potassium chloride into a stirrer;
s2, adding 4 parts of epoxy resin, 5 parts of polyaspartic acid, 2 parts of chelated trace element gelatin and 2 parts of bis (4-amino-3-methylcyclohexyl) methane into a stirrer, and stirring for 10 min;
s3, packaging the stirred fertilizer to obtain a coated inorganic fertilizer;
s4, adding 66 parts of coated inorganic fertilizer and 33 parts of organic fertilizer into the stirrer, and mixing and stirring for 5min to obtain blended fertilizer A;
s5, weighing and packaging 1 part of biological fungus material and the bulk blend fertilizer A to obtain the bulk blend fertilizer.
The preparation method of the chelated trace element gelatin comprises the following steps:
step 1, adding 2 parts of trace elements zinc sulfate, 3 parts of ferrous sulfate, 2.5 parts of magnesium sulfate and 3.5 parts of copper sulfate into a stirring device;
and 2, adding 2 parts of disodium ethylene diamine tetraacetate into a stirring device, and stirring for 1-30min to obtain the chelated trace element gelatin.
The effective viable count of the bacillus subtilis in the biological fungus material is 200 hundred million/g.
The biological bacterium material purchasing manufacturer is an Weifang agriculture biological technology limited company with the model of 545.
The organic fertilizer purchasing manufacturer is Hengwang agriculture science and technology company Limited in Zhengdingcounty, and the model is 01.
The nitrogen fertilizer purchasing manufacturer is Jinxin fertilizer industry Co Ltd in Shijiazhuan city, and the nitrogen content is 22%.
The monoammonium phosphate purchasing manufacturer is Wuhan Jixin Yibang Biotech Co.
The potassium chloride purchasing manufacturer is Shandong Yunsheng chemical technology Co., Ltd, and the model is YS-26.
The epoxy resin purchasing manufacturer is ZG-009, a science and technology company Limited of light entrepreneurial disputed in Beijing.
The bis (4-amino-3-methylcyclohexyl) methane was purchased from Hubei Jiu Fenglong chemical Co., Ltd.
The polyaspartic acid purchasing manufacturer is Sinkiang magnificent Biotech limited company, and the model is L-aspartic acid.
Comparative example 2
The bulk blending fertilizer comprises the following components in parts by weight: 33 parts of organic fertilizer, 35 parts of nitrogenous fertilizer, 23 parts of monoammonium phosphate, 8 parts of potassium chloride and 1 part of biological fungus material.
A method for preparing a bulk blend fertilizer, comprising the steps of:
s1, adding 35 parts of nitrogenous fertilizer, 23 parts of monoammonium phosphate and 8 parts of potassium chloride into a stirrer;
s2, adding 4 parts of epoxy resin, 5 parts of polyaspartic acid and 2 parts of bis (4-amino-3-methylcyclohexyl) methane into a stirrer, and stirring for 10 min;
s3, packaging the stirred fertilizer to obtain a coated inorganic fertilizer;
s4, adding 66 parts of coated inorganic fertilizer and 33 parts of organic fertilizer into the mixture, and mixing and stirring for 5min to obtain bulk blended fertilizer A;
s5, weighing and packaging 1 part of biological fungus material and the bulk blend fertilizer A to obtain the bulk blend fertilizer.
The effective viable count of the bacillus subtilis in the biological fungus material is 200 hundred million/g.
The biological bacterium material purchasing manufacturer is an Weifang agriculture biological technology limited company with the model of 545.
The organic fertilizer purchasing manufacturer is Hengwang agriculture science and technology company Limited in Zhengdingcounty, and the model is 01.
The nitrogen fertilizer purchasing manufacturer is Jinxin fertilizer industry Co Ltd in Shijiazhuan city, and the nitrogen content is 22%.
The monoammonium phosphate purchasing manufacturer is Wuhan Jixin Yibang Biotech Co.
The potassium chloride purchasing manufacturer is Shandong Yunsheng chemical technology Co., Ltd, and the model is YS-26.
The epoxy resin purchasing manufacturer is ZG-009, a light entrepreneurial science and technology company Limited, disputed in Beijing.
The bis (4-amino-3-methylcyclohexyl) methane was purchased from Hubei Jiu Fenglong chemical Co., Ltd.
The polyaspartic acid purchasing manufacturer is Sinkiang magnificent Biotech limited company, and the model is L-aspartic acid.
Performance testing
1. Soil organic matter determination
And measuring the content of organic matters in the soil by using a GB9834-88 soil organic matter measuring method.
2. pH value of soil
The soil pH value was measured using a portable pH meter, Mettler-Tolymany.
The blended fertilizers prepared in examples 1-2 and comparative examples 1-2 were applied to corn fields, and the growth conditions of corn, the organic matter content in soil and the pH value of soil were tested, and the test results are shown in Table 1.
TABLE 1
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (10)
1. The bulk blending fertilizer is characterized by comprising the following components in parts by weight:
20-40 parts of organic fertilizer, 50-82 parts of inorganic fertilizer and 0.2-2 parts of biological fungus material.
2. The bulk blend fertilizer of claim 1, wherein the organic matter content of said organic fertilizer is between 15% and 50% by weight of the organic fertilizer.
3. The bulk fertilizer of claim 1, wherein the inorganic fertilizer comprises one or more of a nitrogen fertilizer, a phosphorous fertilizer, and a potassium fertilizer.
4. The blended fertilizer of claim 3, wherein the nitrogen content of the nitrogen fertilizer is from 10 to 40 wt%.
5. The blended fertilizer of claim 3, wherein the phosphorus content of the phosphorus fertilizer is between 10 wt% and 40 wt%.
6. The bulk fertilizer of claim 5, wherein the phosphorous fertilizer is monoammonium phosphate.
7. The blended fertilizer of claim 3, wherein the potassium content of the potassium fertilizer is from 40 to 80 wt%.
8. The bulk blend fertilizer of claim 7, wherein said potassium fertilizer comprises potassium chloride.
9. A method of preparing a blended fertilizer according to any one of claims 1-8, comprising the steps of:
s1, adding an inorganic fertilizer into a stirrer;
s2, adding the coating agent and the curing agent into a stirrer, and stirring for 5-20 min;
s3, packaging the stirred fertilizer to obtain a coated inorganic fertilizer;
s4, adding the coated inorganic fertilizer and the organic fertilizer into stirring, and mixing and stirring for 1-10min to obtain a bulk blended fertilizer A;
s5, weighing and packaging the biological fungus material and the bulk blend fertilizer A to obtain the bulk blend fertilizer.
10. The method for preparing the blended fertilizer as claimed in claim 9, wherein the coating agent in S2 comprises a resin.
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