CN107337538A - A kind of gardens slow release fertilizer and preparation method thereof - Google Patents
A kind of gardens slow release fertilizer and preparation method thereof Download PDFInfo
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- CN107337538A CN107337538A CN201710690522.2A CN201710690522A CN107337538A CN 107337538 A CN107337538 A CN 107337538A CN 201710690522 A CN201710690522 A CN 201710690522A CN 107337538 A CN107337538 A CN 107337538A
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- slow release
- release fertilizer
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- 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
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
Abstract
The invention discloses a kind of gardens slow release fertilizer, it is made up of following raw material according to parts by weight：5 10 parts of 38 parts of perlite, 25 40 parts of medical stone, 0.6 2 parts of dandelion, 13 parts of the fruit of Chinese wolfberry, 6 10 parts of animal wastes, 14 18 parts of molasses, 36 parts of amino acid, 6 12 parts of diatom, 12 parts of microorganism fungus kind, 1.5 4 parts of dregs of beans, 20 32 parts of sewage plant sludge, 48 parts of potassium chloride, 8 12 parts of fruit tree discarded object and Diammonium phosphate (DAP).The present invention also disclosed the preparation method of the fertilizer.The product is rich in organic matter, and fertilizer slowly dilutes, and extends fertilizer efficiency, can meet the green nutrition for planting growth needs, and the product can play a part of chesson after, improve soil ventilation light transmission condition, have wide market prospects.
Description
Technical field
The present invention relates to a kind of chemical fertilizer, specifically a kind of gardens slow release fertilizer.
Background technology
Gardens are in certain region application engineering technology and artistic media, and (or mountain, folded is further built by transforming landform
Stone, Li Shui), the beautiful natural environment that forms of plantation trees flowers and plants, the approach creation such as constructing architecture and arrangement garden road and border of strolling about or have a rest
Domain, it is known as gardens.Gardens are taken the course of its own in Chinese traditional architecture, and have significant achievement is historic gardens building.
Green plants are the important components in gardens, are suitable for various scenic spot, leisure healing resort and city
The plant of all types of garden greenery patches applications in township.Green plants need to use chemical fertilizer ability riotous growth, the utilization rate ratio of slow release chemical fertilizer
Common chemical fertilizer will it is high more than half, can largely reduce fertilizer amount, reduce cost, excessive fertilization is avoided using slow release fertilizer
Caused by a large amount of nitrogen and phosphorus elements loss, reduce the pollution to soil, its economic, society, environmental benefit are fairly obvious.But
It is the slow release fertilizer that ornamental plant not yet occurs in China, it has wide market prospects.
The content of the invention
It is an object of the invention to provide a kind of gardens slow release fertilizer, is asked with solve to propose in above-mentioned background technology
Topic.
To achieve the above object, the present invention provides following technical scheme：
A kind of gardens slow release fertilizer, is made up of following raw material according to parts by weight：Perlite 3-8 parts, medical stone 25-40
Part, dandelion 0.6-2 parts, fruit of Chinese wolfberry 1-3 parts, animal wastes 6-10 parts, molasses 14-18 parts, amino acid 3-6 parts, diatom 6-12
Part, microorganism fungus kind 1-2 parts, dregs of beans 1.5-4 parts, sewage plant sludge 20-32 parts, potassium chloride 4-8 parts, fruit tree discarded object 8-12 parts
With Diammonium phosphate (DAP) 5-10 parts.
As the further scheme of the present invention：Animal wastes use at least one of cow dung, sheep manure, pig manure and chicken manure,
Fruit tree discarded object includes pericarp, rhizome, flower and branches and leaves.
As the further scheme of the present invention：Microorganism fungus kind is using saccharomycete, acetic acid bacteria, lactic acid bacteria, huge gemma bar
Bacterium, rhizobium, the compound bacteria of nitrogen-fixing bacteria and phosphobacteria, it is saccharomycete, acetic acid bacteria, lactic acid bacteria, bacillus megaterium, rhizobium, solid
The weight of nitrogen bacterium and phosphobacteria ratio is 6-8：1：2-3：2：1-2：1:2-4.
The preparation method of the gardens slow release fertilizer, is comprised the following steps that：
Step 1, dandelion and the fruit of Chinese wolfberry are individually positioned in immersion 2-4 hours in ethanol, are filtrated to get dandelion immersion
Liquid and fruit of Chinese wolfberry soak；
Step 2, perlite, medical stone and sewage plant sludge are mixed at room temperature and dry in the shade and be crushed to 200-400
Mesh, obtain the first mixture；
Step 3, antioxidant and methanol will be added in diatom, mixture is closed and stirred under dark room conditions, use
Methanol extraction, filtering, filtrate is concentrated by evaporation, obtains diatom auxin；
Step 4, by Diammonium phosphate (DAP), potassium chloride, animal wastes, molasses, amino acid, dregs of beans, fruit tree discarded object and appropriate
Water mixes, and adds microorganism fungus kind and stacks fermentation, fermentation process central temperature reaches 55-70 degrees Celsius, fermentation time 5-
10 days, it was less than 8% then to dry to moisture content, obtains tunning；
Step 5, the first mixture, diatom auxin and tunning are put into rotary pelleting machine, while spray dandelion
Soak and fruit of Chinese wolfberry soak, it is granulated while rotating, particle is by drying, sub-sieve, magnetization treatment and metering packing, you can
To finished product.
As the further scheme of the present invention：The temperature of ethanol is 40-50 degrees Celsius in step 1, in step 5 at magnetization
The magnetic field intensity of reason is 600-800A/m, the magnetizing time 4-12 seconds, power 2-8KW.
Compared with prior art, the beneficial effects of the invention are as follows：The products material wide material sources, production cost is low, equipment
Invest small, easy to operate, manageability, product quality easily ensures, environmentally friendly, non-secondary pollution；The product is rich in organic matter, fertilizer
Material slowly dilution, extends fertilizer efficiency, can meet the green nutrition for planting growth needs, and the product can play chesson after
Effect, improve soil ventilation light transmission condition, there are wide market prospects.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Embodiment 1
A kind of gardens slow release fertilizer, is made up of following raw material according to parts by weight：3 parts of perlite, 25 parts of medical stone, Pu Gong
0.6 part of English, 1 part of the fruit of Chinese wolfberry, 6 parts of animal wastes, 14 parts of molasses, 3 parts of amino acid, 6 parts of diatom, 1 part of microorganism fungus kind, dregs of beans
5 parts of 1.5 parts, 20 parts of sewage plant sludge, 4 parts of potassium chloride, 8 parts of fruit tree discarded object and Diammonium phosphate (DAP).Animal wastes using cow dung and
The mixture of chicken manure, fruit tree discarded object include pericarp, rhizome, flower and branches and leaves.
The preparation method of the gardens slow release fertilizer, is comprised the following steps that：
Step 1, dandelion and the fruit of Chinese wolfberry are individually positioned in ethanol and soaked 3 hours, is filtrated to get dandelion soak
With fruit of Chinese wolfberry soak；
Step 2, perlite, medical stone and sewage plant sludge are mixed at room temperature and dry in the shade and be crushed to 280 mesh, is obtained
To the first mixture；
Step 3, antioxidant and methanol will be added in diatom, mixture is closed and stirred under dark room conditions, use
Methanol extraction, filtering, filtrate is concentrated by evaporation, obtains diatom auxin；
Step 4, by Diammonium phosphate (DAP), potassium chloride, animal wastes, molasses, amino acid, dregs of beans, fruit tree discarded object and appropriate
Water mixes, and adds microorganism fungus kind and stacks fermentation, and fermentation process central temperature reaches 60 degrees Celsius, and fermentation time is 8 days,
Then it is less than 8% to dry to moisture content, obtains tunning；
Step 5, the first mixture, diatom auxin and tunning are put into rotary pelleting machine, while spray dandelion
Soak and fruit of Chinese wolfberry soak, it is granulated while rotating, particle is by drying, sub-sieve, magnetization treatment and metering packing, you can
To finished product.
Embodiment 2
A kind of gardens slow release fertilizer, is made up of following raw material according to parts by weight：6 parts of perlite, 34 parts of medical stone, Pu Gong
1.4 parts of English, 2 parts of the fruit of Chinese wolfberry, 8 parts of animal wastes, 16 parts of molasses, 4.5 parts of amino acid, 10 parts of diatom, 1.5 parts of microorganism fungus kind,
8 parts of 3 parts of dregs of beans, 28 parts of sewage plant sludge, 6 parts of potassium chloride, 11 parts of fruit tree discarded object and Diammonium phosphate (DAP).Microorganism fungus kind uses
Saccharomycete, acetic acid bacteria, lactic acid bacteria, bacillus megaterium, rhizobium, the compound bacteria of nitrogen-fixing bacteria and phosphobacteria, saccharomycete, acetic acid
Bacterium, lactic acid bacteria, bacillus megaterium, rhizobium, the weight ratio of nitrogen-fixing bacteria and phosphobacteria are 7：1：2：2：1：1:3.
The preparation method of the gardens slow release fertilizer, is comprised the following steps that：
Step 1, dandelion and the fruit of Chinese wolfberry are individually positioned in the ethanol that temperature is 46 degrees Celsius and soaked 4 hours, is filtered
Obtain dandelion soak and fruit of Chinese wolfberry soak；
Step 2, perlite, medical stone and sewage plant sludge are mixed at room temperature and dry in the shade and be crushed to 320 mesh, is obtained
To the first mixture；
Step 3, antioxidant and methanol will be added in diatom, mixture is closed and stirred under dark room conditions, use
Methanol extraction, filtering, filtrate is concentrated by evaporation, obtains diatom auxin；
Step 4, by Diammonium phosphate (DAP), potassium chloride, animal wastes, molasses, amino acid, dregs of beans, fruit tree discarded object and appropriate
Water mixes, and adds microorganism fungus kind and stacks fermentation, and fermentation process central temperature reaches 58 degrees Celsius, and fermentation time is 9 days,
Then it is less than 8% to dry to moisture content, obtains tunning；
Step 5, the first mixture, diatom auxin and tunning are put into rotary pelleting machine, while spray dandelion
Soak and fruit of Chinese wolfberry soak, it is granulated while rotating, particle is by drying, sub-sieve, magnetization treatment and metering packing, you can
To finished product, the magnetic field intensity of magnetization treatment is 730A/m, magnetizing time 8 seconds, power 6KW.
Embodiment 3
A kind of gardens slow release fertilizer, is made up of following raw material according to parts by weight：8 parts of perlite, 40 parts of medical stone, Pu Gong
2 parts of English, 3 parts of the fruit of Chinese wolfberry, 10 parts of animal wastes, 18 parts of molasses, 6 parts of amino acid, 12 parts of diatom, 2 parts of microorganism fungus kind, dregs of beans 4
Part, 32 parts of sewage plant sludge, 8 parts of potassium chloride, 12 parts of fruit tree discarded object and 10 parts of Diammonium phosphate (DAP).Animal wastes are using cow dung, sheep
The mixture of excrement, pig manure and chicken manure, fruit tree discarded object include pericarp, rhizome, flower and branches and leaves.Microorganism fungus kind using saccharomycete,
Acetic acid bacteria, lactic acid bacteria, bacillus megaterium, rhizobium, the compound bacteria of nitrogen-fixing bacteria and phosphobacteria, saccharomycete, acetic acid bacteria, lactic acid
Bacterium, bacillus megaterium, rhizobium, the weight ratio of nitrogen-fixing bacteria and phosphobacteria are 6：1：3：2：2：1:4.
The preparation method of the gardens slow release fertilizer, is comprised the following steps that：
Step 1, dandelion and the fruit of Chinese wolfberry are individually positioned in the ethanol that temperature is 48 degrees Celsius and soaked 2 hours, is filtered
Obtain dandelion soak and fruit of Chinese wolfberry soak；
Step 2, perlite, medical stone and sewage plant sludge are mixed at room temperature and dry in the shade and be crushed to 360 mesh, is obtained
To the first mixture；
Step 3, antioxidant and methanol will be added in diatom, mixture is closed and stirred under dark room conditions, use
Methanol extraction, filtering, filtrate is concentrated by evaporation, obtains diatom auxin；
Step 4, by Diammonium phosphate (DAP), potassium chloride, animal wastes, molasses, amino acid, dregs of beans, fruit tree discarded object and appropriate
Water mixes, and adds microorganism fungus kind and stacks fermentation, and fermentation process central temperature reaches 70 degrees Celsius, and fermentation time is 8 days,
Then it is less than 8% to dry to moisture content, obtains tunning；
Step 5, the first mixture, diatom auxin and tunning are put into rotary pelleting machine, while spray dandelion
Soak and fruit of Chinese wolfberry soak, it is granulated while rotating, particle is by drying, sub-sieve, magnetization treatment and metering packing, you can
To finished product, the magnetic field intensity of magnetization treatment is 760A/m, magnetizing time 10 seconds, power 5KW.
The fruit of Chinese wolfberry is containing sugar, also containing substantial amounts of selenium element, by filtered fluid of the fruit of Chinese wolfberry after ethanol soaks, and spray on plants,
Plant growth can be promoted.Medical stone is a kind of pure natural micro- warehouse, can be provided for crops abundant potassium, sodium,
The several mineral materials such as calcium, magnesium, phosphorus, zinc and inorganic salts, while the growth for accelerating plant is also helped, improve the quality of plant, tool
There are good antibacterial, purifying plant growing environment.Molasses are the byproducts of sugar industry, largely may be used wherein mainly containing
Sugar fermentation (mainly sucrose), thus be good fermentation raw material, also containing protein, amino acid, vitamin, nitrogen, phosphorus, potassium,
The inorganic salts such as calcium, magnesium, potassium content is high, and nontoxic, harmless, these are all the nutrients needed for plant, has after molasses fermented and bonds
Property, beneficial to granulation, make the fertiliser granulates after processing that there is slow-release function, extend fertilizer efficiency.Dandelion contains taraxol, dandelion
A variety of health-nutrition compositions such as element, choline, organic acid, synanthrin.The composition of sewage plant sludge is mainly soluble organic-biological,
The organic nutrient substance for needing to consume including some biomass.Gross protein value is up to 30-50% in dregs of beans, is that animal is main
One of protein feeds.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (5)
1. a kind of gardens slow release fertilizer, it is characterised in that be made up of following raw material according to parts by weight：Perlite 3-8 parts, wheat meal
Stone 25-40 parts, dandelion 0.6-2 parts, fruit of Chinese wolfberry 1-3 parts, animal wastes 6-10 parts, molasses 14-18 parts, amino acid 3-6 parts, silicon
Algae 6-12 parts, microorganism fungus kind 1-2 parts, dregs of beans 1.5-4 parts, sewage plant sludge 20-32 parts, potassium chloride 4-8 parts, fruit tree discarded object
8-12 parts and Diammonium phosphate (DAP) 5-10 parts.
2. gardens slow release fertilizer according to claim 1, it is characterised in that the animal wastes using cow dung, sheep manure,
At least one of pig manure and chicken manure, fruit tree discarded object include pericarp, rhizome, flower and branches and leaves.
3. gardens slow release fertilizer according to claim 1 or 2, it is characterised in that the microorganism fungus kind uses yeast
Bacterium, acetic acid bacteria, lactic acid bacteria, bacillus megaterium, rhizobium, the compound bacteria of nitrogen-fixing bacteria and phosphobacteria, saccharomycete, acetic acid bacteria, breast
Sour bacterium, bacillus megaterium, rhizobium, the weight ratio of nitrogen-fixing bacteria and phosphobacteria are 6-8：1：2-3：2：1-2：1:2-4.
A kind of 4. preparation method of gardens slow release fertilizer as described in claim 1-3 is any, it is characterised in that specific steps
It is as follows：
Step 1, dandelion and the fruit of Chinese wolfberry are individually positioned in ethanol immersion 2-4 hours, be filtrated to get dandelion soak and
Fruit of Chinese wolfberry soak；
Step 2, perlite, medical stone and sewage plant sludge are mixed at room temperature and dry in the shade and be crushed to 200-400 mesh, is obtained
To the first mixture；
Step 3, antioxidant and methanol will be added in diatom, mixture is closed and stirred under dark room conditions, use methanol
Extraction, filtering, filtrate is concentrated by evaporation, obtains diatom auxin；
Step 4, Diammonium phosphate (DAP), potassium chloride, animal wastes, molasses, amino acid, dregs of beans, fruit tree discarded object and appropriate water are mixed
To close, add microorganism fungus kind and stack fermentation, fermentation process central temperature reaches 55-70 degrees Celsius, and fermentation time is 5-10 days,
Then it is less than 8% to dry to moisture content, obtains tunning；
Step 5, the first mixture, diatom auxin and tunning are put into rotary pelleting machine, while spray dandelion immersion
Liquid and fruit of Chinese wolfberry soak, it is granulated while rotating, particle is by drying, sub-sieve, magnetization treatment and metering packing, you can obtains into
Product.
5. the preparation method of gardens slow release fertilizer according to claim 4, it is characterised in that ethanol in the step 1
Temperature be 40-50 degrees Celsius, the magnetic field intensity of magnetization treatment is 600-800A/m in step 5, the magnetizing time 4-12 seconds, work(
Rate is 2-8KW.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710690522.2A CN107337538A (en) | 2017-08-14 | 2017-08-14 | A kind of gardens slow release fertilizer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710690522.2A CN107337538A (en) | 2017-08-14 | 2017-08-14 | A kind of gardens slow release fertilizer and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107915536A (en) * | 2017-12-22 | 2018-04-17 | 苏州斯尔斯特新材料科技有限公司 | A kind of special fertilizer for promoting fruit tree growth and preparation method thereof |
| CN108794108A (en) * | 2018-02-06 | 2018-11-13 | 安徽新安古建园林建设股份有限公司 | A kind of afforestation organic fertilizer and preparation method thereof |
| CN111072423A (en) * | 2020-01-16 | 2020-04-28 | 北海宝农农业科技有限公司 | Fertilizer prepared from shell powder and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402574A (en) * | 2014-09-11 | 2015-03-11 | 六安市绿都园林绿化有限责任公司 | Slow release fertilizer for jasmine plantation and preparation method thereof |
| CN106748075A (en) * | 2016-12-11 | 2017-05-31 | 镇江常青园林工程有限公司 | The slow release fertilizer of efficient absorption |
| CN106883078A (en) * | 2017-04-17 | 2017-06-23 | 芜湖绿艺园林工程有限公司 | A kind of Nursery Stock environmentally friendly slow release fertilizer and its production method |
-
2017
- 2017-08-14 CN CN201710690522.2A patent/CN107337538A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402574A (en) * | 2014-09-11 | 2015-03-11 | 六安市绿都园林绿化有限责任公司 | Slow release fertilizer for jasmine plantation and preparation method thereof |
| CN106748075A (en) * | 2016-12-11 | 2017-05-31 | 镇江常青园林工程有限公司 | The slow release fertilizer of efficient absorption |
| CN106883078A (en) * | 2017-04-17 | 2017-06-23 | 芜湖绿艺园林工程有限公司 | A kind of Nursery Stock environmentally friendly slow release fertilizer and its production method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107915536A (en) * | 2017-12-22 | 2018-04-17 | 苏州斯尔斯特新材料科技有限公司 | A kind of special fertilizer for promoting fruit tree growth and preparation method thereof |
| CN108794108A (en) * | 2018-02-06 | 2018-11-13 | 安徽新安古建园林建设股份有限公司 | A kind of afforestation organic fertilizer and preparation method thereof |
| CN111072423A (en) * | 2020-01-16 | 2020-04-28 | 北海宝农农业科技有限公司 | Fertilizer prepared from shell powder and preparation method thereof |
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