CN114133304A - Water-retention and fertilizer-retention composite microbial fertilizer and preparation method thereof - Google Patents
Water-retention and fertilizer-retention composite microbial fertilizer and preparation method thereof Download PDFInfo
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 39
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims description 6
- 206010016807 Fluid retention Diseases 0.000 title abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 36
- 241000894006 Bacteria Species 0.000 claims abstract description 34
- 150000001875 compounds Chemical class 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 244000063299 Bacillus subtilis Species 0.000 claims abstract description 26
- 235000014469 Bacillus subtilis Nutrition 0.000 claims abstract description 26
- 241000881860 Paenibacillus mucilaginosus Species 0.000 claims abstract description 26
- 239000007633 bacillus mucilaginosus Substances 0.000 claims abstract description 26
- 230000000243 photosynthetic effect Effects 0.000 claims abstract description 26
- 241000179039 Paenibacillus Species 0.000 claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 17
- 229960000892 attapulgite Drugs 0.000 claims abstract description 17
- 239000004202 carbamide Substances 0.000 claims abstract description 17
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 17
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims abstract description 17
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 17
- 239000010457 zeolite Substances 0.000 claims abstract description 17
- 229910000396 dipotassium phosphate Inorganic materials 0.000 claims abstract description 4
- 235000019797 dipotassium phosphate Nutrition 0.000 claims abstract description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
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- 238000012216 screening Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- -1 wormcast Substances 0.000 claims description 2
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- 239000011812 mixed powder Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 16
- 235000015097 nutrients Nutrition 0.000 abstract description 13
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 9
- 239000011591 potassium Substances 0.000 abstract description 9
- 229910052700 potassium Inorganic materials 0.000 abstract description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 8
- 239000011574 phosphorus Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
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- 235000013619 trace mineral Nutrition 0.000 abstract description 3
- 239000011573 trace mineral Substances 0.000 abstract description 3
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- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 17
- 235000002566 Capsicum Nutrition 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000047 product Substances 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 239000006002 Pepper Substances 0.000 description 4
- 241000722363 Piper Species 0.000 description 4
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- 238000002474 experimental method Methods 0.000 description 4
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- 240000008574 Capsicum frutescens Species 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 102000018997 Growth Hormone Human genes 0.000 description 2
- 108010051696 Growth Hormone Proteins 0.000 description 2
- 125000002619 bicyclic group Chemical group 0.000 description 2
- 239000001390 capsicum minimum Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000013401 experimental design Methods 0.000 description 2
- 239000000122 growth hormone Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 235000021049 nutrient content Nutrition 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000758706 Piperaceae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009044 synergistic interaction Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a water-retention and fertilizer-retention composite microbial fertilizer which comprises the following raw materials in percentage by mass: 10-15% of attapulgite powder, 10-15% of diatomite, 10-15% of zeolite powder, 15-20% of wormcast, 30% of compound microbial agent, 10-15% of urea and 10-15% of dipotassium phosphate; the compound microbial agent mainly comprises bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacterium and photosynthetic bacteria. The attapulgite powder containing various trace elements and the diatomite and zeolite powder with good water retention performance are utilized to form good synergistic effect by selecting proper raw materials and proportion, and meanwhile, nitrogen, phosphorus and potassium nutrient elements are added to adjust the physical and chemical environment of soil, provide excellent water retention, fertilizer retention and soil nutrient retaining capacity activation, enhance the disease resistance advantage of crops, and facilitate the growth of the crops and the improvement of the quality of the crops.
Description
Technical Field
The invention relates to the technical field of agricultural product planting, in particular to a water-retaining and fertilizer-retaining composite microbial fertilizer and a preparation method thereof.
Background
Water and nutrient are two most basic environmental factors for plant growth and development and are two very important influencing factors in agricultural production. The shortage of water and nutrients becomes a limiting factor of sustainable development of agriculture. The drought and farmland irrigation super-mining underground water worsens the ecological environment of many northern areas, the water and soil are lost in a large area, the soil fertility is reduced, the cultivated land is gradually degenerated, and even the land is desertified. In recent years, in order to rapidly improve the crop yield, a large amount of chemical fertilizers are applied in the agricultural production process, soil nutrient imbalance is caused by the large amount of chemical fertilizers, soil acidification and hardening are caused, the permeability of soil is reduced, the production capacity of the soil is reduced, the environment quality of farmland soil is reduced, the agricultural production and the grain safety are not facilitated, and the problems of water and soil loss, environmental pollution and the like are also increased.
The compound microbial fertilizer is a living microbial product which is formed by compounding specific microorganisms and nutrient substances, can provide, maintain or improve plant nutrition, and can improve the yield or quality of agricultural products, and belongs to one of novel fertilizers. There are two types of composite microbial fertilizers: one kind of composite microbial fertilizer is compounded with 2 or more kinds of microbes. The other is a compound microbial fertilizer of bacteria, various nutrient elements or additives and a synergist, namely the bacteria are compounded with a certain amount of nitrogen, phosphorus, potassium or 1-2 of the nitrogen, the phosphorus, the potassium or the potassium, a certain amount of trace elements are added into the bacteria, a certain amount of rare earth elements are added into the bacteria, and a certain amount of plant growth hormone is added into the bacteria. The microbial fertilizer can improve the supply of nutrient elements of plants through the life activities of microorganisms or generate plant growth hormone, promote the absorption and utilization of the nutrient elements by the plants, antagonize the pathogenic effects of certain pathogenic microorganisms, enhance the stress resistance of crops, promote the increase of the crop yield and improve the fruit quality of the crops.
Therefore, how to provide a water-retaining and fertilizer-retaining composite microbial fertilizer is a problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a water-retaining and fertilizer-retaining compound microbial fertilizer, which has little pollution to the environment, can remarkably promote the growth of crops and improve the yield of the crops.
In order to achieve the purpose, the invention adopts the following technical scheme:
a water-retention and fertilizer-retention composite microbial fertilizer comprises the following components in percentage by mass: 10-15% of attapulgite powder, 10-15% of diatomite, 10-15% of zeolite powder, 15-20% of wormcast, 30% of compound microbial agent, 10-15% of urea and 10-15% of dipotassium phosphate; the compound microbial agent mainly comprises bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacterium and photosynthetic bacteria.
As a preferable technical scheme of the technical scheme, the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1: 1.
The invention also provides a preparation method of the water-retaining and fertilizer-retaining composite microbial fertilizer, which is the same as the technical scheme in the invention concept and is characterized by comprising the following steps:
(1) fermenting bacillus subtilis, bacillus mucilaginosus, bacillus azotobacter and photosynthetic bacteria, centrifuging the fermentation liquor at 8000r/min for 15min, collecting thallus, and mixing to obtain compound microbial agent;
(2) weighing attapulgite powder, diatomite, zeolite powder, wormcast, urea and dipotassium hydrogen phosphate according to a proportion, mixing, crushing and sieving to obtain powder to obtain a mixture;
(3) and mixing the compound microbial agent and the mixture according to a proportion, screening and packaging to obtain a finished product.
According to the technical scheme, the attapulgite powder containing multiple trace elements, the diatomite and the zeolite powder with good water retention performance are utilized, the raw materials and the proportion are selected appropriately, so that a good synergistic effect is formed, the nitrogen, phosphorus and potassium nutrient elements are added, the physical and chemical environment of soil is adjusted, the excellent retention capacity of water retention, fertilizer retention and soil nutrient activation is provided, the disease resistance advantage of crops is enhanced, and the growth of the crops and the improvement of the quality of the crops are facilitated.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a water-retention and fertilizer-retention composite microbial fertilizer. The related microbial strains are purchased from the technical research and popularization center of the microbial fertilizer.
Example 1:
a water-retaining and fertilizer-retaining composite microbial fertilizer comprises: 10% of attapulgite powder, 12.5% of diatomite, 12.5% of zeolite powder, 15% of wormcast, 30% of compound microbial agent, 10% of urea and 10% of dipotassium phosphate; the composite microbial agent consists of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacteria and photosynthetic bacteria, and the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1: 1.
Example 2:
a water-retaining and fertilizer-retaining composite microbial fertilizer comprises: 15% of attapulgite powder, 10% of diatomite, 10% of zeolite powder, 15% of wormcast, 30% of compound microbial agent, 10% of urea and 10% of dipotassium hydrogen phosphate; wherein the compound microbial agent consists of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacteria and photosynthetic bacteria, and the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1
Example 3:
a water-retaining and fertilizer-retaining composite microbial fertilizer comprises: 11% of attapulgite powder, 10% of diatomite, 10% of zeolite powder, 16% of wormcast, 30% of compound microbial agent, 11% of urea and 12% of dipotassium hydrogen phosphate; wherein the compound microbial agent consists of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacteria and photosynthetic bacteria, and the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1
Example 4:
a water-retaining and fertilizer-retaining composite microbial fertilizer comprises: 10% of attapulgite powder, 10% of diatomite, 10% of zeolite powder, 15% of wormcast, 30% of compound microbial agent, 12.5% of urea and 12.5% of dipotassium hydrogen phosphate; the composite microbial agent consists of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacteria and photosynthetic bacteria, and the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1: 1.
Example 5
A water-retaining and fertilizer-retaining composite microbial fertilizer comprises: 10% of attapulgite powder, 10% of diatomite, 15% of zeolite powder, 15% of wormcast, 30% of compound microbial agent, 10% of urea and 10% of dipotassium hydrogen phosphate; the composite microbial agent consists of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacteria and photosynthetic bacteria, and the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1: 1.
Example 6
A water-retaining and fertilizer-retaining composite microbial fertilizer comprises: 10% of attapulgite powder, 10% of diatomite, 10% of zeolite powder, 20% of wormcast, 30% of compound microbial agent, 10% of urea and 10% of dipotassium hydrogen phosphate; the composite microbial agent consists of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacteria and photosynthetic bacteria, and the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1: 1.
Example 7
A water-retaining and fertilizer-retaining composite microbial fertilizer comprises: 10% of attapulgite powder, 10% of diatomite, 10% of zeolite powder, 15% of wormcast, 30% of compound microbial agent, 15% of urea and 10% of dipotassium hydrogen phosphate; the composite microbial agent consists of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacteria and photosynthetic bacteria, and the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1: 1.
Example 8
A water-retaining and fertilizer-retaining composite microbial fertilizer comprises: 10% of attapulgite powder, 10% of diatomite, 10% of zeolite powder, 15% of wormcast, 30% of compound microbial agent, 10% of urea and 15% of dipotassium hydrogen phosphate; the composite microbial agent consists of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacteria and photosynthetic bacteria, and the ratio of the bacillus mucilaginosus, the bacillus subtilis, the paenibacillus azotobacteria and the photosynthetic bacteria is 2:2:1: 1.
The preparation method of the water-retaining and fertilizer-retaining composite microbial fertilizer comprises the following steps:
(1) fermenting bacillus subtilis, bacillus mucilaginosus, bacillus azotobacter and photosynthetic bacteria, concentrating fermentation liquor, and mixing to obtain a compound microbial agent;
(2) weighing attapulgite powder, diatomite, zeolite powder, urea and dipotassium hydrogen phosphate according to a certain proportion, mixing, crushing and sieving to obtain a strain carrier;
(3) and mixing the compound microbial agent and a strain carrier in proportion, screening, and packaging to obtain a finished product.
Calculating the number of effective viable bacteria, the total nutrient content of nitrogen, phosphorus and potassium, the rate of mixed bacteria, the water content, the pH value and the product fineness in the water-retaining and fertilizer-retaining composite microbial fertilizer prepared in the examples 1 to 4; see table 1;
TABLE 1
Example 5
The compound microbial fertilizer consists of microbial bacteria, carriers and NPK nutrient elements, and in order to verify the synergistic interaction among the selected strain carriers, a contrast test is designed:
(1) land for test:
the test site is arranged in a test field opposite to a west dicyclic ecological garden in Baoding city, and the test site has moisture soil, 29.2g/kg of organic matter content, 1.6g/kg of total nitrogen content, 0.26g/kg of quick-acting phosphorus content and 0.75g/kg of quick-acting potassium content.
(2) And (3) experimental design:
the test was conducted in 5 treatments, each treatment was repeated in 3 times, and in 15 test plots, the test plots were randomly distributed, and the crop to be tested was capsicum.
Experimental group 1: 60kg of compound microbial fertilizer in the embodiment 1 is applied per mu
Experimental group 2: 60kg of compound microbial fertilizer applied to each mu of the fertilizer in the embodiment 2
Experimental group 3: 60kg of compound microbial fertilizer in the embodiment 3 is applied per mu
Experimental group 4: 60kg of compound microbial fertilizer applied in example 4 per mu
Control group: 10kg of urea and 15kg of dipotassium hydrogen phosphate
And field management is carried out according to a conventional pepper planting mode.
(3) Test results
In the pepper planting management process, compared with a control group, the water consumption of the experimental group 1, the experimental group 2, the experimental group 3 and the experimental group 4 is respectively reduced by 12%, 15% and 20%, and the disease incidence rate is reduced.
Compared with the control group, the experimental group 1, the experimental group 2, the experimental group 3 and the experimental group 4, the pepper blooms and fruits 2 days, 1 day, 2 days and 3 days earlier, and the yield is respectively improved by 15%, 19%, 16% and 20%.
After the peppers are harvested, 20cm plough layer soil is taken from 5 treated land blocks for nutrient detection, and compared with a control group, the content of organic matters, total nitrogen, quick-acting phosphorus and quick-acting potassium in the soil is obviously improved in the experiment group 1, the experiment group 2, the experiment group 3 and the experiment group 4. See table 2;
TABLE 2 variation of basic nutrient content of soil under different treatments
Example 6
(1) Land for test:
the test site is arranged in a test field opposite to a west dicyclic ecological garden in Baoding city, and the test site has moisture soil, 29.2g/kg of organic matter content, 1.6g/kg of total nitrogen content, 0.26g/kg of quick-acting phosphorus content and 0.75g/kg of quick-acting potassium content.
(2) And (3) experimental design:
the test was conducted in 5 treatments, each treatment was repeated in 3 times, and in 15 test plots, the test plots were randomly distributed, and the crop to be tested was capsicum.
Experimental group 1: 100% composite microbial agent (composed of Bacillus mucilaginosus, Bacillus subtilis, Paenibacillus azotoformans and photosynthetic bacteria, wherein the ratio of the Bacillus mucilaginosus, the Bacillus subtilis, the Paenibacillus azotoformans and the photosynthetic bacteria is 2:2:1: 1.)
Experimental group 2: 100% carrier (attapulgite powder 10%, diatomite 10%, zeolite powder 10%, wormcast 15%, urea 10%, dipotassium hydrogen phosphate 15%)
Experimental group 3: 70% of carrier and 30% of compound microbial agent
Control group: 10kg of urea and 15kg of dipotassium hydrogen phosphate
And field management is carried out according to a conventional pepper planting mode.
(3) The test results are shown in Table 3
TABLE 3
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The water-retaining and fertilizer-retaining composite microbial fertilizer is characterized by comprising the following raw materials in percentage by mass: 10-15% of attapulgite powder, 10-15% of diatomite, 10-15% of zeolite powder, 15-20% of wormcast, 30% of compound microbial agent, 10-15% of urea and 10-15% of dipotassium phosphate; the compound microbial agent mainly comprises bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacterium and photosynthetic bacteria.
2. The water-retaining and fertilizer-retaining composite microbial fertilizer as claimed in claim 1, wherein the volume ratio of bacillus mucilaginosus, bacillus subtilis, paenibacillus azotobacter and photosynthetic bacteria is 2:2:1: 1.
3. The preparation method of the water-retaining fertilizer-retaining compound microbial fertilizer as claimed in any one of claims 1-2, characterized by comprising the following steps:
(1) fermenting bacillus subtilis, bacillus mucilaginosus, bacillus azotobacter and photosynthetic bacteria, centrifuging the fermentation liquor at 8000r/min for 15min, collecting thallus, and mixing to obtain compound microbial agent;
(2) weighing attapulgite powder, diatomite, zeolite powder, wormcast, urea and dipotassium hydrogen phosphate according to a proportion, mixing, crushing and sieving into powder to obtain a mixture;
(3) and mixing the compound microbial agent with the mixture, screening to obtain uniformly mixed powder, and packaging to obtain a finished product.
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| 付毅菁等: "《地理环境与资源约束微利生态循环规划实践》", vol. 1, 31 January 2019, 黑龙江科学技术出版社, pages: 49 * |
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