CN106748133B - Fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms and preparation method and application thereof - Google Patents
Fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms and preparation method and application thereof Download PDFInfo
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- CN106748133B CN106748133B CN201611189574.3A CN201611189574A CN106748133B CN 106748133 B CN106748133 B CN 106748133B CN 201611189574 A CN201611189574 A CN 201611189574A CN 106748133 B CN106748133 B CN 106748133B
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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
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
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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
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
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Abstract
The invention discloses a fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms, and a preparation method and application thereof, wherein the fertilizer synergistic wrapping agent comprises the water-soluble organic matters and a microorganism bacterium agent, the weight ratio of the water-soluble organic matters to the microorganisms is (3-100) to 1, and the water-soluble organic matters are selected from substances formed by drying fermentation liquor which is generated in the preparation process of amino acid and/or ethanol and is completely dissolved in water. The fertilizer synergistic wrapping agent belongs to an anhydrous wrapping agent, and can improve the wrapping rate of the fertilizer synergistic wrapping agent in the process of coating microbial fertilizer; in addition, the fertilizer synergistic wrapping agent contains the strain protective agent, so that the survival rate of microorganisms can be improved, the number of effective viable bacteria in soil can be increased within a certain time, and the soil condition can be improved.
Description
Technical Field
The invention belongs to the field of fertilizers, and particularly relates to a fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms, and a preparation method and application thereof.
Background
Agriculture is the foundation of national economy, and the application of chemical fertilizers is improved without departing from the yield and income increase of agricultural economic crops. However, due to the long-term application of a large amount of chemical fertilizers singly or partially, various problems of soil in China occur, such as hardening, acidification, salinization and soil microbial diversification are damaged, the soil fertility is directly reduced, a large amount of field diseases and insect pests occur, the agricultural yield is not obviously increased, a series of problems of environmental pollution and the like are brought, the ecological environment of the soil is increasingly worsened, and the sustainable development of agriculture is seriously challenged. The problem of the improper application of the fertilizers is not negligible, and researchers are forced to continuously search and explore ways for improving the utilization rate of the chemical fertilizers to achieve balanced fertilization and reasonable fertilization so as to overcome the defects of the chemical fertilizers.
CN 104262062A discloses coated urea, which comprises urea and a coating agent, wherein the coating agent is degradable low-density polyethylene and oxidized starch, the oxidized starch is oxidized starch oxidized by hydrogen peroxide, the utilization rate of the coated urea is high, the loss of the urea can be reduced, and ammonia generated by urea decomposition can be stored in soil for a long time; the preparation method is simple and the operation is simple. CN 102838420B discloses a selenium-rich slow-release coated urea, which is a particulate matter formed by wrapping a fertilizer core by using cold-soluble polyvinyl alcohol as a binder and bentonite as a coating material; the bentonite accounts for 2-5% of the mass of the fertilizer core, and the fertilizer core comprises, by weight, 15-35 parts of urea, 5-10 parts of antibacterial peptide and 10-20 parts of chelated selenium. The fertilizer can obviously improve the absorption and utilization effect of crops on nitrogen, enhance the absorption of plants on nitrogen and other nutrient elements, obviously improve the utilization rate of the fertilizer, improve the utilization rate of the fertilizer to 30-40 percent and reduce the using amount of the fertilizer by 20-33 percent. Under the condition of equal amount of fertilizer, the yield of grains can be increased by 15-30%, the yield of vegetables can be increased by 20-50%, and the yield of cash crops can be increased by more than 20%.
In such a harsh soil ecology, soil and plant researchers recommend applying microbial agents to soil to improve soil properties, thereby improving soil ecology and increasing crop yield and quality. The microorganisms can dissolve fixed mineral elements in soil, increase nutrient effectiveness, degrade pollutants in soil, remove the harm of heavy metals and pesticides, secrete hormone substances to stimulate and regulate the growth of crops, generate volatile or non-volatile substances for inhibiting the growth of pathogenic bacteria, limit the growth or metabolism of the pathogenic bacteria, improve plant resistance, have dual effects of protection and treatment, and can effectively prevent and treat soil-borne diseases. Therefore, from the perspective of ecological agriculture, the microorganisms have a wide application prospect in agriculture.
In the existing microbial fertilizer preparation process, a microbial agent is mainly added in the granulation process, a large number of microbes die due to high-temperature treatment, and the microbial agent is short in effectiveness time, poor in repeatability and stability after being applied. In addition, since the microorganisms in the microbial fertilizer cannot directly contact with the chemical fertilizer, the microbial fertilizer has the problems of low survival rate of the microorganisms, poor activity and the like, and therefore, the microbial fertilizer with high survival rate of the microorganisms and simple preparation process needs to be developed to improve the current situation that the soil ecological environment is continuously worsened at present.
Disclosure of Invention
In order to solve the problems, the inventor of the invention finds that the microbial agent and the water-soluble organic matter are mixed and then coated on the surface of the fertilizer particles through repeated experiments, so that the direct contact of microorganisms and chemical fertilizers is avoided, the survival rate of the microorganisms cannot be influenced by the high-salt environment of the chemical fertilizers, the effective viable count in soil can be increased when the chemical fertilizers are applied to the soil, the soil fertility is improved, the soil structure is improved, the cooperation effect between the microorganisms and the compound fertilizer can be fully exerted, and the yield and the efficiency of crops are increased.
In the first aspect of the invention, a fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms is provided, which comprises water-soluble organic matters and a microorganism bacterium agent and is characterized in that the weight ratio of the water-soluble organic matters to the microorganisms is (3-100):1, wherein the water-soluble organic matters are selected from substances formed by drying all water-soluble fermentation liquor generated in the preparation process of amino acid and/or ethanol.
Preferably, in the fertilizer efficiency-enhancing coating agent containing water-soluble organic matter and microorganisms, the weight percentage of the water-soluble organic matter based on the weight of the substance formed by drying the whole water-soluble fermentation broth generated in the amino acid and/or ethanol preparation process is 40% or more and the pH value of the substance formed by drying is 2 to 6.
In the invention, the weight of the water-soluble organic matter is determined according to NYT 1976-2010 determination of the content of the organic matter in the water-soluble fertilizer.
Preferably, in the fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms, the microbial agent is a compound microbial agent.
Preferably, in the fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms, the water content of the microbial agent is less than 5%.
Preferably, in the fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms, the effective active bacteria number of the microbial agent is 1-400 hundred million/gram.
Preferably, in the fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms, the microbial agent is two or more selected from bacillus, paecilomyces, gliocladium virens and verticillium.
Preferably, the fertilizer synergistic coating agent containing water-soluble organic matters and microorganisms further comprises one or more of a strain protective agent, a lubricant and an alkaline oxide.
Preferably, in the fertilizer synergistic coating agent containing water-soluble organic matters and microorganisms, the strain protective agent is selected from one or more of attapulgite, light calcium carbonate and diatomite.
More preferably, the fineness of the strain protective agent is 200 meshes or more.
In the present invention, the light calcium carbonate is chemically processed and is called light calcium carbonate because its sedimentation volume (2.4-2.8mL/g) is larger than that (1.1-1.9mL/g) of heavy calcium carbonate produced by a mechanical method.
Preferably, in the fertilizer efficiency enhancing wrapper containing water-soluble organic matter and microorganisms, the alkaline oxide is selected from one or more of calcium oxide, magnesium oxide and zinc oxide.
Preferably, in the fertilizer synergistic coating agent containing water-soluble organic matters and microorganisms, the lubricant is a powdery substance selected from one or more of molybdenum disulfide, titanium dioxide, mica powder and talcum powder.
Preferably, the fertilizer synergistic coating agent containing water-soluble organic matters and microorganisms comprises the following substances in parts by weight:
wherein the fineness of the strain protective agent is more than 200 meshes.
In a second aspect of the present invention, there is also provided a method for preparing the above fertilizer efficiency-enhancing coating agent containing water-soluble organic matter and microorganisms, comprising the steps of:
(1) uniformly mixing the water-soluble organic matter, the strain protective agent, the lubricant and the alkaline oxide according to the proportion and sieving;
(2) adding the microbial inoculum into the mixture obtained after sieving in the step (1) and mixing the mixture evenly,
wherein, the mesh number of the sieve used for sieving in the step (1) is 200-.
In a third aspect of the invention, the invention also provides a microbial fertilizer containing the fertilizer synergistic wrapping agent, which comprises a chemical fertilizer granule core layer and a microbial coating layer on the surface of the chemical fertilizer core layer, and is characterized in that the microbial fertilizer is prepared by wrapping the fertilizer synergistic wrapping agent on the surface of the chemical fertilizer core layer.
Preferably, in the microbial fertilizer containing the fertilizer synergistic wrapping agent, the weight ratio of the chemical fertilizer particle core layer to the microbial coating layer is (10-300): 1.
preferably, in the microbial fertilizer comprising the fertilizer synergistic coating agent, the chemical fertilizer granule core layer is a commercially available chemical fertilizer granule.
Preferably, in the microbial fertilizer containing the fertilizer synergistic coating agent, the chemical fertilizer granule core layer contains one or more of a nitrogen fertilizer, a phosphate fertilizer, a potassium fertilizer, a secondary element fertilizer and a trace element fertilizer. Wherein the nitrogen fertilizer is one or more of ammonium sulfate, ammonium nitrate, ammonium phosphate, ammonia water, ammonium chloride and urea; the phosphate fertilizer is one or more of phosphoric acid, ammonium phosphate, calcium magnesium phosphate, calcium superphosphate, diammonium phosphate, monoammonium phosphate and ammonium polyphosphate; the potassium fertilizer is one or more of potassium phosphate, potassium chloride and potassium nitrate; the secondary element fertilizer is a fertilizer containing one or more of silicon, calcium, magnesium and sulfur, such as sodium silicate, gypsum, magnesium sulfate and the like; the microelement fertilizer is one or more of iron, manganese, boron, zinc, copper, and molybdenum, such as ferrous sulfate, manganese sulfate, borax, zinc sulfate, copper sulfate, and ammonium molybdate.
Preferably, the microbial fertilizer containing the fertilizer efficiency-enhancing coating agent is prepared by uniformly spraying the fertilizer efficiency-enhancing coating agent on the surface of chemical fertilizer particles in a coating machine for coating, wherein the coating time is 5-8 minutes, and the coating temperature is 30-70 ℃, so that the microbial compound fertilizer can be obtained.
By coating the fertilizer synergistic wrapping agent, the high survival rate of microorganisms in a high-concentration chemical fertilizer environment can be ensured, and the preparation process is simple and efficient.
Compared with the prior art, the invention has the following beneficial effects:
(1) the fertilizer synergistic wrapping agent belongs to an anhydrous wrapping agent, and can improve the wrapping rate of the fertilizer synergistic wrapping agent in the process of coating microbial fertilizer; in addition, the fertilizer synergistic wrapping agent contains a strain protective agent, so that the survival rate of microorganisms can be improved, and the number of effective viable bacteria in soil can be increased within a certain time, so that the soil condition can be improved;
(2) the microbial coating layer coated on the surface of the chemical fertilizer particles in the microbial fertilizer disclosed by the invention contains water-soluble organic matters, and an organic buffer layer is formed around the fertilizer after the microbial coating layer is released into soil, so that an excellent propagation environment can be provided for the survival of microbes after the microbial coating layer is applied to a crop growth environment, a high-salt environment formed by fertilizers such as nitrogen, phosphorus and potassium in the fertilizer can be inhibited, the required energy and a proper environment are provided for the rapid propagation of the microbes, and meanwhile, the microbes in the microbial fertilizer can compete with harmful microbes for living space, and the propagation of the harmful microbes is inhibited;
(3) the chemical fertilizer core layer in the microbial fertilizer can provide necessary nutrient elements for plant growth, and the water-soluble organic matters in the microbial coating layer form an organic buffer layer around the fertilizer to accelerate the decomposition and conversion of the chemical fertilizer core layer in the soil, and the microbial fertilizer has complementary advantages with the microbial fertilizer, has comprehensive, balanced and lasting nutrients, is highly efficient, has strong advantages in the aspects of improving the fertilizing structure, improving the soil fertility, improving the soil hardening condition, improving the fertilizer utilization rate, protecting the environment, promoting the sustainable development of agriculture and the like, and has good economic, social and ecological benefits.
Detailed Description
In order to make the objects and advantages of the invention more concise, the invention will be described in more detail with reference to the following examples, to which it is in no way limited. The following examples are merely preferred examples of the present invention and are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Preparation examples
Preparation of example 1
1) Preparation of fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms
The fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms is prepared by the steps of drying a substance formed by drying a whole water-soluble fermentation liquid generated in the preparation process of 1kg of amino acid (the weight of the water-soluble organic matters is 50 percent based on the weight of the dried substance), sieving the substance with a 300-mesh sieve, and then uniformly mixing the sieved substance with 0.05kg of bacillus subtilis and 0.05kg of paecilomyces lilacinus.
2) Preparation of microbial fertilizer
And (3) putting 30kg of urea into a coating machine, spraying the prepared fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms into the coating machine, and staying for 5 minutes to obtain the microbial fertilizer.
Preparation of example 2
1) Preparation of fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms
The fertilizer synergistic wrapping agent is prepared by uniformly mixing 1kg of a substance formed by drying a fermentation liquor which is generated in the preparation process of amino acid and is completely dissolved in water (the weight of the water-soluble organic matter is 50 percent based on the weight of the dried substance), 0.2kg of attapulgite (the fineness of the attapulgite is 250 meshes), 80g of mica powder and 50g of magnesium oxide, then sieving the mixture by a 300-mesh sieve, and then uniformly mixing the sieved substance with 0.05kg of bacillus subtilis and 0.05kg of paecilomyces lilacinus.
2) Preparation of microbial fertilizer
And (3) putting 30kg of urea into a coating machine, spraying the prepared fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms into the coating machine, and staying for 5 minutes to obtain the microbial fertilizer.
Preparation of example 3
1) Preparation of fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms
The fertilizer synergistic wrapping agent is prepared by uniformly mixing 1kg of a substance formed by drying a fermentation liquor which is generated in the preparation process of amino acid and is completely dissolved in water (the weight of the water-soluble organic matter is 50 percent based on the weight of the dried substance), 0.1kg of attapulgite (the fineness of the attapulgite is 250 meshes), 50g of mica powder and 30g of magnesium oxide, then sieving the mixture by a 300-mesh sieve, and then uniformly mixing the sieved substance with 0.05kg of bacillus subtilis and 0.05kg of paecilomyces lilacinus.
2) Preparation of microbial fertilizer
And (3) putting 30kg of urea into a coating machine, spraying the prepared fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms into the coating machine, and staying for 5 minutes to obtain the microbial fertilizer.
Preparation of example 4
1) Preparation of fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms
The fertilizer synergistic wrapping agent is prepared by uniformly mixing 1kg of a substance formed by drying a water-soluble fermentation broth generated in the preparation process of amino acid (the weight of the water-soluble organic matter is 50 percent based on the weight of the dried substance), 0.1kg of attapulgite (the fineness of the attapulgite is 250 meshes), 50g of mica powder and 30g of magnesium oxide, then sieving the mixture by a 300-mesh sieve, and then uniformly mixing the sieved substance with 0.025kg of bacillus subtilis and 0.025kg of paecilomyces lilacinus.
2) Preparation of microbial fertilizer
And (3) putting 30kg of urea into a coating machine, spraying the prepared fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms into the coating machine, and staying for 5 minutes to obtain the microbial fertilizer.
Comparative examples
Comparative example 1
1kg of substances formed by drying the fermentation liquor which is not filtered and generated in the amino acid preparation process (the fermentation liquor which is not filtered and generated in the amino acid preparation process contains substances which are insoluble in the fermentation liquor) pass through a 300-mesh sieve, and then the sieved substances are uniformly mixed with 0.05kg of bacillus subtilis and 0.05kg of paecilomyces lilacinus to prepare the fertilizer synergistic wrapping agent containing the water-soluble organic matters and the microorganisms.
And (3) putting 30kg of urea into a coating machine, spraying the prepared fertilizer synergistic coating agent containing the water-soluble organic matters and the microorganisms into the coating machine, and staying for 5 minutes to obtain the fertilizer.
Comparative example 2
The material formed by drying the whole water-soluble fermentation broth produced in the production of 1kg of amino acid (the weight of the water-soluble organic matter is 50% based on the weight of the material formed by drying) was sieved through a 300-mesh sieve.
And (3) putting 30kg of urea into a coating machine, spraying the substance obtained after the urea passes through a 300-mesh sieve into the coating machine, and staying for 5 minutes to obtain the fertilizer.
Comparative example 3
1kg of a substance formed by drying a fermentation liquor which is generated in the preparation process of amino acid and is completely dissolved in water (the weight of the water-soluble organic matter is 50 percent based on the weight of the substance formed by drying), 0.2kg of attapulgite (the fineness of the attapulgite is 250 meshes), 80g of mica powder and 50g of magnesium oxide are uniformly mixed, and then the mixture is sieved by a 300-mesh sieve.
And (3) putting 30kg of urea into a coating machine, spraying the mixture obtained after the urea passes through a 300-mesh sieve into the coating machine, and staying for 5 minutes to obtain the fertilizer.
Experiment in field (cabbage)
Experiments were performed with 8 treatments, in a randomized block arrangement, in triplicate. And ridges are arranged between each experimental area and each block to prevent water and fertilizer from flowing, a 2m protective row is arranged on the experimental ground, and the soil in each experimental area is sterilized. And (4) topdressing is carried out in each area of the experiment according to the requirement of a scheme, and other management measures are the same. Fertilizing: the fertilizer to be tested was applied all at the bottom after sowing.
Treatment 1: 3kg of the microbial fertilizer prepared in preparation example 1 was applied;
and (3) treatment 2: 3kg of the microbial fertilizer prepared in preparation example 2 was applied;
and (3) treatment: 3kg of the microbial fertilizer prepared in preparation example 3 was applied;
and (4) treatment: 3kg of the microbial fertilizer prepared in preparation example 4 was applied;
and (4) treatment 5: 3kg of the fertilizer prepared in comparative example 1 was applied;
and (6) treatment: 3kg of the fertilizer prepared in comparative example 2 was applied;
and (7) treatment: 3kg of the fertilizer prepared in comparative example 3 was applied;
and (4) treatment 8: 3kg of commercially available urea was added.
After one week of fertilization, digging out soil samples in root areas of the Chinese cabbage, shaking off soil around the roots, taking the soil samples tightly attached to the root surfaces as rhizosphere soil, and determining the microbial quantity by adopting a flat gradient dilution method, wherein a beef extract peptone agar culture medium is adopted as bacteria, a tiger red culture medium is adopted as fungi, a Gao's 1 agar culture medium is adopted as actinomycetes, so that the influence of different treatments on the effective microbial viable count of the rhizosphere soil is carried out, and soil samples are taken for 3 times respectively in each treatment area, and the result is shown in table 1.
And (3) measuring the dispersion diameter of the effective viable bacteria: after fertilization for 1 week, the effective viable bacteria dispersion range was measured and expressed as the effective viable bacteria dispersion circle diameter, and the repetition was 3 times, and the results are shown in table 1.
And (3) counting the soil hardening condition: after fertilizing for 2 weeks, observing the soil hardening condition of each group, and classifying the soil hardening condition into no hardening, light hardening and general hardening according to the soil hardening degree, wherein the results are shown in table 1.
TABLE 1 microbiological indicators and hardening conditions in the soil after fertilization
As can be seen from the table above, the fertilizers without microorganisms are applied in the treatments 6, 7 and 8, the number of effective viable bacteria in the soil is small, the distribution range is small, and the hardening condition is severe hardening; the fertilizer applied in the treatment 5 is slightly different from the fertilizers applied in the treatments 6, 7 and 8, contains microorganisms, has more effective viable bacteria in soil than the fertilizers applied in the treatments 6, 7 and 8, improves the hardening condition, and shows that water-soluble organic matters are beneficial to the propagation of the microorganisms in the soil; after 1-4 treatments, the microbial fertilizer of the invention is applied, because the fermentation liquor which is generated in the preparation process of containing the microorganisms and amino acid and is completely dissolved in water is dried to form a substance, namely water-soluble organic matter, the number of effective viable bacteria in the soil is obviously increased, the viable bacteria range is also increased, and the soil hardening is improved.
After one month of fertilization, the cabbages were harvested and ripened, and the yield and disease resistance of each treated cabbages were compared, and the results are shown in table 2 below.
TABLE 2 yield and disease resistance of each treated cabbage
As can be seen from Table 2, compared with treatments 5, 6, 7 and 8, treatments 1, 2, 3 and 4 significantly increase the acre yield of Chinese cabbage, have significant yield-increasing effect and significantly reduce the morbidity due to the application of the microbial fertilizer of the invention, and the microbial fertilizer of the invention can achieve the purpose of increasing the yield and the efficiency and simultaneously improve the disease resistance of crops.
The analysis of the table 1 and 2 shows that the microbial fertilizer of the invention can obviously improve the soil hardening condition and the microbial number in the soil, and simultaneously realize the effects of increasing the yield and improving the disease resistance of crops due to the fact that the fertilizer synergistic wrapping agent containing water-soluble organic matters and microbes is coated on the surfaces of the chemical fertilizer particles.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention are also intended to fall within the scope of the appended claims. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (4)
1. A preparation method of a fertilizer synergistic wrapping agent containing water-soluble organic matters and microorganisms is characterized by comprising the following steps:
(1) uniformly mixing the water-soluble organic matter, the strain protective agent, the lubricant and the alkaline oxide according to the proportion and sieving;
(2) adding the microbial inoculum into the mixture obtained after sieving in the step (1) and mixing the mixture evenly,
wherein, the mesh number of the sieve used for sieving in the step (1) is 200-;
the fertilizer synergistic wrapping agent comprises water-soluble organic matters and a microbial agent, wherein the weight ratio of the water-soluble organic matters to the microbes is (3-100) to 1,
wherein the water-soluble organic matter is selected from substances formed by drying a fermentation liquor which is completely dissolved in water and is generated in the preparation process of amino acid and/or ethanol; the microbial agent is a compound microbial agent; the microbial agent is two or more selected from Bacillus, Paecilomyces, Gliocladium, and Verticillium.
2. The preparation method of the fertilizer synergistic coating agent according to claim 1, characterized by comprising the following positions in parts by weight:
50-80 parts of water-soluble organic matters,
1-10 parts of a microbial agent,
5-20 parts of a strain protective agent,
5-10 parts of a lubricating agent,
3-8 parts of alkaline oxide, namely,
wherein the fineness of the strain protective agent is more than 200 meshes.
3. A microbial fertilizer comprising the fertilizer efficiency-enhancing coating agent of any one of claims 1-2, which comprises a chemical fertilizer granule core layer and a microbial coating layer on the surface of the chemical fertilizer core layer, characterized in that the microbial fertilizer is prepared by coating the fertilizer efficiency-enhancing coating agent of any one of claims 1-2 on the surface of the chemical fertilizer core layer.
4. A microbial fertilizer according to claim 3, wherein the chemical fertilizer granule core layer comprises one or more of a nitrogen fertilizer, a phosphate fertilizer, a potassium fertilizer, a medium element fertilizer and a trace element fertilizer.
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