CN106748155A - A kind of organic mineral substance multi-element compound fertilizer and preparation method thereof - Google Patents
A kind of organic mineral substance multi-element compound fertilizer and preparation method thereof Download PDFInfo
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- CN106748155A CN106748155A CN201611210116.3A CN201611210116A CN106748155A CN 106748155 A CN106748155 A CN 106748155A CN 201611210116 A CN201611210116 A CN 201611210116A CN 106748155 A CN106748155 A CN 106748155A
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- 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
- C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- 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
-
- 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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- 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 organic mineral substance multi-element compound fertilizer and preparation method thereof, belong to agricultural fertilizer field.The raw material composition of the Chemical Mixed Fertilizer is birds excreta, ferrous sulfate, ammonium molybdate, N P and K NPK, sunflower seeds slag, ultra-fine wood powder, bone meal, frutus cnidii slag, Radix Astragali slag, white orchid squash seed meal, wheatgrass powder, blue algae powder, bamboo vinegar, microbial bacterial agent, ethylenediamine tetra-acetic acid, dodecyldimethylammonium hydroxide inner salt, humic acid, ultra-fine walnut powder, ultra-fine attapulgite, ultrafine chitin powder, ultra-fine sepiolite powder, monose, gluconic acid, betelnut extract, pepper extract, sodium alginate, hydroxypropyl cyclodextrin.Chemical Mixed Fertilizer of the invention also containing the trace mineral element needed for various plants and is beneficial to the probioticses of plant growth not only containing a great number of elements such as N P and K；Can improved soil, increase the soil organism, possess good efficiency slow release ability；Easy to use, using effect is good, free from environmental pollution.
Description
Technical field
The invention belongs to technical field of agricultural fertilizers, it is related to organic matter, azophoska and other mineral fertilizer material mixing system
Into the technology of agricultural fertilizer, specifically a kind of organic mineral substance multi-element compound fertilizer and preparation method thereof.
Background technology
At present, in agricultural includes cereal crops, each planting fruit-trees, the production of vegetables, chemical fertilizer need to be used.The use of chemical fertilizer is right
Great function has been played in the raising of grain yield.But a series of problems is also excessively brought using chemical fertilizer for a long time, soil is such as destroyed
Earth crumb structure, nutritive proportion is lacked of proper care in causing arable soil, and the content of organic matter declines, and causes soil seriously hardened；Dissolving speed
Degree is fast, and plant has little time to absorb just with depth of soils is seeped under water, and plant absorption rate is low, and only 3% or so, remaining chemical fertilizer enters
Superficial layer water system, severe contamination water environment threatens the life and health of the mankind；Without organic matter, nutritional ingredient is single, crops
Yield poorly, poor quality does not meet plant growth rule, plant disease-resistant ability.Chemical fertilizer growth is excessively applied in people's long-term consumption
Grain, water fruits and vegetables out etc., can cause somatic chronic to be poisoned, and be harmful to health, or even suffer from strange disease；Use
Often, usage amount is big, lavishes labor on resource.Although sustained-release and controlled release fertilizer can change traditional fertilization mode, but reduce chase after
Fertile number of times, realizes single fertilization, can increase substantially utilization rate of fertilizer, reduces rate of fertilizer, reduces labor intensity, and reduces
Cost, additional income.But according to the pertinent regulations of state, chemical fertilizer cannot function as producing the Fertilizer application used during pollution-free food.
And with the raising of our people's living standard, pollution-free food has been rooted in the hearts of the people.Therefore, seeking can be for plant growth be carried
For the nutrition enriched, soil regime can be improved again, moreover it is possible to which the fertilizer to the mankind and environmental beneficial is very urgent, with wide hair
Exhibition prospect.Although having occurred in that many organic fertilizers, mineral fertilizer currently on the market, fertilizer efficiency utilization rate and persistence still need to be carried
It is high.
The content of the invention
The technical problems to be solved by the invention are directed to prior art Shortcomings, there is provided a kind of excellent compound many
Functional slow-release organic mineral substance multi-element compound fertilizer and preparation method thereof.
In order to achieve the above object, the present invention uses following technical scheme.
A kind of organic mineral substance multi-element compound fertilizer, including the raw material of following weight portion is constituted：40-45 parts of birds excreta,
Ferrous sulfate 0.01-0.05 parts, ammonium molybdate 0.01-0.03 parts, 20-30 parts of N P and K NPK, 5-6 parts of sunflower seeds slag,
Ultra-fine wood powder 2-4 parts, bone meal 1-2 parts, 4-7 parts of frutus cnidii slag, 1-5 parts of Radix Astragali slag, 1-3 parts of white orchid squash seed meal, wheatgrass powder 10-15
Part, blue algae powder 2-5 parts, bamboo vinegar 1-3 parts, microbial bacterial agent 1-2 parts, ethylenediamine tetra-acetic acid 0.1-0.3 parts, dimethyl
0.1-0.2 parts of base glycine betaine, humic acid 0.5-1.5 parts, ultra-fine walnut powder 1.2-2.5 parts, ultra-fine attapulgite 6-10 parts, it is ultra-fine
1.5-2.5 parts of chitin powder, ultra-fine sepiolite powder 4-5 parts, monose 0.1-0.3 parts, gluconic acid 0.001-0.003 parts, betel nut carries
Take thing 0.1-0.2 parts, pepper extract 0.1-0.3 parts, sodium alginate 1-3 parts, hydroxypropyl cyclodextrin 3-5 parts.
Nitrogen element content is that 15%, phosphorus element content is that 15%, Determination of Potassium is in the N P and K NPK
15%；The microbial bacterial agent is EM bacteria agent.
The preparation method of described organic mineral substance multi-element compound fertilizer, comprises the following steps：
(1) birds excreta, wheatgrass powder, frutus cnidii slag, Radix Astragali slag input fermentation vat are taken, ferrous sulfate is sequentially added, mixed
Banked up after even and fermented 10-15 days, obtain first fermentation thing；100 times of microbial bacteria dilution agent is taken, monose, glucose is added thereto to
Acid, is sufficiently stirred for obtaining microbial inoculum；By first fermentation thing input secondary fermentation pond, white orchid squash seed meal, micro- is sequentially added
Biological bacterium solution, fermentation 5-10 days of being banked up after mixing thoroughly, obtains secondary fermentation thing；
(2) by secondary fermentation thing, N P and K NPK, sunflower seeds slag, ultra-fine wood powder, ultra-fine walnut powder, bone meal, indigo plant
Algae powder, humic acid, sequentially add blender, stir, the mixture for obtaining adds comminutor to be granulated；
(3) ultra-fine attapulgite, ultra-fine sepiolite powder, ultrafine chitin powder are well mixed, in the ultra-fine compound for obtaining
The water with its quality equivalent is added, 2-5min is stirred, ethylenediamine tetra-acetic acid, bamboo vinegar, molybdic acid are sequentially added in the slurry for obtaining
Ammonium, stirs 10-20min, and water is removed in drying, and ultra-fine grinding obtains the first slow release layer material；
(4) sodium alginate, hydroxypropyl cyclodextrin, dodecyldimethylammonium hydroxide inner salt are mixed, add appropriate amount of deionized water,
Stirring 5-15min, adds betelnut extract, pepper extract, stirs 5-10min, obtains the second slow release layer material；
(5) the particle surface obtained after (2) step is granulated sprays the first slow release layer material (3) obtained with step after a small amount of water
Together in input comminutor, dried after granulation, the second slow release layer material one that (4) particle after drying and step are obtained
Rise in input comminutor, dried after granulation, get product.
Advantageous Effects of the invention：Organic mineral substance multi-element compound fertilizer of the invention is not only a large amount of containing N P and K etc.
Element, different trace mineral elements needed for also containing various plants and is beneficial to the probioticses of plant growth；Can conditioned soil
Earth, increases the soil organism, possesses good efficiency slow release ability；Easy to use, using effect is good, free from environmental pollution.
Specific embodiment
Further make detailed elaboration to technical scheme with reference to embodiment, but it is not all of the invention in pairs
Scope is limited.
Embodiment 1
A kind of organic mineral substance multi-element compound fertilizer, including the raw material of following weight portion is constituted：40 parts of birds excreta, sulfuric acid
Ferrous 0.01 part, 0.01 part of ammonium molybdate, 20 parts of N P and K NPK, 5 parts of sunflower seeds slag, 2 parts of ultra-fine wood powder, 1 part of bone meal,
4 parts of frutus cnidii slag, 1 part of Radix Astragali slag, 1 part of white orchid squash seed meal, 10 parts of wheatgrass powder, 2 parts of blue algae powder, 1 part of bamboo vinegar, microbial bacterial agent
1 part, 0.1 part of ethylenediamine tetra-acetic acid, 0.1 part of dodecyldimethylammonium hydroxide inner salt, 0.5 part of humic acid, 1.2 parts of ultra-fine walnut powder,
6 parts of ultra-fine attapulgite, 1.5 parts of ultrafine chitin powder, 4 parts of ultra-fine sepiolite powder, 0.1 part of monose, 0.001 part of gluconic acid, Bin
0.1 part of bulky extract, 0.1 part of pepper extract, 1 part of sodium alginate, 3 parts of hydroxypropyl cyclodextrin.
Nitrogen element content is that 15%, phosphorus element content is that 15%, Determination of Potassium is in the N P and K NPK
15%；The microbial bacterial agent is EM bacteria agent.
The preparation method of described organic mineral substance multi-element compound fertilizer, comprises the following steps：
(1) birds excreta, wheatgrass powder, frutus cnidii slag, Radix Astragali slag input fermentation vat are taken, ferrous sulfate is sequentially added, mixed
Banked up after even and fermented 10 days, obtain first fermentation thing；100 times of microbial bacteria dilution agent is taken, monose, gluconic acid is added thereto to,
It is sufficiently stirred for obtaining microbial inoculum；By first fermentation thing input secondary fermentation pond, white orchid squash seed meal, microorganism are sequentially added
Bacterium solution, fermentation 5 days of being banked up after mixing thoroughly, obtains secondary fermentation thing；
(2) by secondary fermentation thing, N P and K NPK, sunflower seeds slag, ultra-fine wood powder, ultra-fine walnut powder, bone meal, indigo plant
Algae powder, humic acid, sequentially add blender, stir, the mixture for obtaining adds comminutor to be granulated；
(3) ultra-fine attapulgite, ultra-fine sepiolite powder, ultrafine chitin powder are well mixed, in the ultra-fine compound for obtaining
The water with its quality equivalent is added, 2min is stirred, ethylenediamine tetra-acetic acid, bamboo vinegar, ammonium molybdate is sequentially added in the slurry for obtaining,
Water is removed in stirring 10min, drying, and ultra-fine grinding obtains the first slow release layer material；
(4) sodium alginate, hydroxypropyl cyclodextrin, dodecyldimethylammonium hydroxide inner salt are mixed, add appropriate amount of deionized water,
Stirring 5min, adds betelnut extract, pepper extract, stirs 5min, obtains the second slow release layer material；
(5) the particle surface obtained after (2) step is granulated sprays the first slow release layer material (3) obtained with step after a small amount of water
Together in input comminutor, dried after granulation, the second slow release layer material one that (4) particle after drying and step are obtained
Rise in input comminutor, dried after granulation, get product.
Embodiment 2
A kind of organic mineral substance multi-element compound fertilizer, including the raw material of following weight portion is constituted：45 parts of birds excreta, sulfuric acid
Ferrous 0.05 part, 0.03 part of ammonium molybdate, 30 parts of N P and K NPK, 6 parts of sunflower seeds slag, 4 parts of ultra-fine wood powder, 2 parts of bone meal,
7 parts of frutus cnidii slag, 5 parts of Radix Astragali slag, 3 parts of white orchid squash seed meal, 15 parts of wheatgrass powder, 5 parts of blue algae powder, 3 parts of bamboo vinegar, microbial bacterial agent
2 parts, 0.3 part of ethylenediamine tetra-acetic acid, 0.2 part of dodecyldimethylammonium hydroxide inner salt, 1.5 parts of humic acid, 2.5 parts of ultra-fine walnut powder,
10 parts of ultra-fine attapulgite, 2.5 parts of ultrafine chitin powder, 5 parts of ultra-fine sepiolite powder, 0.3 part of monose, 0.003 part of gluconic acid, Bin
0.2 part of bulky extract, 0.3 part of pepper extract, 3 parts of sodium alginate, 5 parts of hydroxypropyl cyclodextrin.
Nitrogen element content is that 15%, phosphorus element content is that 15%, Determination of Potassium is in the N P and K NPK
15%；The microbial bacterial agent is EM bacteria agent.
The preparation method of described organic mineral substance multi-element compound fertilizer, comprises the following steps：
(1) birds excreta, wheatgrass powder, frutus cnidii slag, Radix Astragali slag input fermentation vat are taken, ferrous sulfate is sequentially added, mixed
Banked up after even and fermented 15 days, obtain first fermentation thing；100 times of microbial bacteria dilution agent is taken, monose, gluconic acid is added thereto to,
It is sufficiently stirred for obtaining microbial inoculum；By first fermentation thing input secondary fermentation pond, white orchid squash seed meal, microorganism are sequentially added
Bacterium solution, fermentation 10 days of being banked up after mixing thoroughly, obtains secondary fermentation thing；
(2) by secondary fermentation thing, N P and K NPK, sunflower seeds slag, ultra-fine wood powder, ultra-fine walnut powder, bone meal, indigo plant
Algae powder, humic acid, sequentially add blender, stir, the mixture for obtaining adds comminutor to be granulated；
(3) ultra-fine attapulgite, ultra-fine sepiolite powder, ultrafine chitin powder are well mixed, in the ultra-fine compound for obtaining
The water with its quality equivalent is added, 5min is stirred, ethylenediamine tetra-acetic acid, bamboo vinegar, ammonium molybdate is sequentially added in the slurry for obtaining,
Water is removed in stirring 20min, drying, and ultra-fine grinding obtains the first slow release layer material；
(4) sodium alginate, hydroxypropyl cyclodextrin, dodecyldimethylammonium hydroxide inner salt are mixed, add appropriate amount of deionized water,
Stirring 15min, adds betelnut extract, pepper extract, stirs 10min, obtains the second slow release layer material；
(5) the particle surface obtained after (2) step is granulated sprays the first slow release layer material (3) obtained with step after a small amount of water
Together in input comminutor, dried after granulation, the second slow release layer material one that (4) particle after drying and step are obtained
Rise in input comminutor, dried after granulation, get product.
Embodiment 3
A kind of organic mineral substance multi-element compound fertilizer, including the raw material of following weight portion is constituted：42.5 parts of birds excreta, sulphur
Sour ferrous 0.03 part, 0.02 part of ammonium molybdate, 25 parts of N P and K NPK, 5.5 parts of sunflower seeds slag, 3 parts of ultra-fine wood powder, bone meal
1.5 parts, 5.5 parts of frutus cnidii slag, 3 parts of Radix Astragali slag, 2 parts of white orchid squash seed meal, 12.5 parts of wheatgrass powder, 3.5 parts of blue algae powder, bamboo vinegar 2
It is part, 1.5 parts of microbial bacterial agent, 0.2 part of ethylenediamine tetra-acetic acid, 0.15 part of dodecyldimethylammonium hydroxide inner salt, 1 part of humic acid, super
Thin 2 parts of walnut powder, 8 parts of ultra-fine attapulgite, 2 parts of ultrafine chitin powder, 4.5 parts of ultra-fine sepiolite powder, 0.2 part of monose, glucose
0.002 part of acid, 0.15 part of betelnut extract, 0.2 part of pepper extract, 2 parts of sodium alginate, 4 parts of hydroxypropyl cyclodextrin.
Nitrogen element content is that 15%, phosphorus element content is that 15%, Determination of Potassium is in the N P and K NPK
15%；The microbial bacterial agent is EM bacteria agent.
The preparation method of described organic mineral substance multi-element compound fertilizer, comprises the following steps：
(1) birds excreta, wheatgrass powder, frutus cnidii slag, Radix Astragali slag input fermentation vat are taken, ferrous sulfate is sequentially added, mixed
Banked up after even and fermented 12 days, obtain first fermentation thing；100 times of microbial bacteria dilution agent is taken, monose, gluconic acid is added thereto to,
It is sufficiently stirred for obtaining microbial inoculum；By first fermentation thing input secondary fermentation pond, white orchid squash seed meal, microorganism are sequentially added
Bacterium solution, fermentation 7 days of being banked up after mixing thoroughly, obtains secondary fermentation thing；
(2) by secondary fermentation thing, N P and K NPK, sunflower seeds slag, ultra-fine wood powder, ultra-fine walnut powder, bone meal, indigo plant
Algae powder, humic acid, sequentially add blender, stir, the mixture for obtaining adds comminutor to be granulated；
(3) ultra-fine attapulgite, ultra-fine sepiolite powder, ultrafine chitin powder are well mixed, in the ultra-fine compound for obtaining
The water with its quality equivalent is added, 4min is stirred, ethylenediamine tetra-acetic acid, bamboo vinegar, ammonium molybdate is sequentially added in the slurry for obtaining,
Water is removed in stirring 15min, drying, and ultra-fine grinding obtains the first slow release layer material；
(4) sodium alginate, hydroxypropyl cyclodextrin, dodecyldimethylammonium hydroxide inner salt are mixed, add appropriate amount of deionized water,
Stirring 10min, adds betelnut extract, pepper extract, stirs 7min, obtains the second slow release layer material；
(5) the particle surface obtained after (2) step is granulated sprays the first slow release layer material (3) obtained with step after a small amount of water
Together in input comminutor, dried after granulation, the second slow release layer material one that (4) particle after drying and step are obtained
Rise in input comminutor, dried after granulation, get product.
Claims (3)
1. a kind of organic mineral substance multi-element compound fertilizer, it is characterised in that the raw material composition including following weight portion：Birds excreta
40-45 parts, ferrous sulfate 0.01-0.05 parts, ammonium molybdate 0.01-0.03 parts, 20-30 parts of N P and K NPK, sunflower seeds
Slag 5-6 parts, ultra-fine wood powder 2-4 parts, bone meal 1-2 parts, 4-7 parts of frutus cnidii slag, 1-5 parts of Radix Astragali slag, 1-3 parts of white orchid squash seed meal, ice
Grass meal 10-15 parts, blue algae powder 2-5 parts, bamboo vinegar 1-3 parts, microbial bacterial agent 1-2 parts, ethylenediamine tetra-acetic acid 0.1-0.3 parts, ten
0.1-0.2 parts of dialkyl dimethyl glycine betaine, humic acid 0.5-1.5 parts, ultra-fine walnut powder 1.2-2.5 parts, ultra-fine attapulgite
6-10 parts, 1.5-2.5 parts of ultrafine chitin powder, ultra-fine sepiolite powder 4-5 parts, monose 0.1-0.3 parts, gluconic acid 0.001-
0.003 part, betelnut extract 0.1-0.2 parts, pepper extract 0.1-0.3 parts, sodium alginate 1-3 parts, hydroxypropyl cyclodextrin 3-5
Part；The microbial bacterial agent is EM bacteria agent.
2. a kind of organic mineral substance multi-element compound fertilizer according to claim 1, it is characterised in that:The N P and K tri compound
Nitrogen element content is that 15%, phosphorus element content is that 15%, Determination of Potassium is 15% in fertilizer.
3. a kind of preparation method of organic mineral substance multi-element compound fertilizer according to claim 1, it is characterised in that including following
Step：
(1) birds excreta, wheatgrass powder, frutus cnidii slag, Radix Astragali slag input fermentation vat are taken, ferrous sulfate is sequentially added, after mixing thoroughly
Bank up and ferment 10-15 days, obtain first fermentation thing；100 times of microbial bacteria dilution agent is taken, monose, gluconic acid is added thereto to, filled
Stirring is divided to obtain microbial inoculum；By first fermentation thing input secondary fermentation pond, white orchid squash seed meal, microbial bacteria are sequentially added
Liquid, fermentation 5-10 days of being banked up after mixing thoroughly, obtains secondary fermentation thing；
By secondary fermentation thing, N P and K NPK, sunflower seeds slag, ultra-fine wood powder, ultra-fine walnut powder, bone meal, blue algae powder,
Humic acid, sequentially add blender, stir, the mixture for obtaining adds comminutor to be granulated；
(3) ultra-fine attapulgite, ultra-fine sepiolite powder, ultrafine chitin powder are well mixed, are added in the ultra-fine compound for obtaining
With the water of its quality equivalent, 2-5min is stirred, ethylenediamine tetra-acetic acid, bamboo vinegar, ammonium molybdate are sequentially added in the slurry for obtaining, stirred
10-20min is mixed, water is removed in drying, and ultra-fine grinding obtains the first slow release layer material；
(4) sodium alginate, hydroxypropyl cyclodextrin, dodecyldimethylammonium hydroxide inner salt are mixed, add appropriate amount of deionized water, stirring
5-15min, adds betelnut extract, pepper extract, stirs 5-10min, obtains the second slow release layer material；
(5) the particle surface obtained after (2) step is granulated is sprayed together with the first slow release layer material (3) obtained with step after a small amount of water
In input comminutor, dried after granulation, thrown together with the second slow release layer material that (4) particle after drying and step are obtained
Enter in comminutor, dried after granulation, get product.
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| CN107963934A (en) * | 2017-12-20 | 2018-04-27 | 芜湖新达园林绿化集团有限公司 | A kind of weeping willow transplants Special slow release fertilizer |
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