CN109279960A - A kind of wheat and corn coating controlled-release fertilizer and preparation method thereof - Google Patents
A kind of wheat and corn coating controlled-release fertilizer and preparation method thereof Download PDFInfo
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- CN109279960A CN109279960A CN201811263978.1A CN201811263978A CN109279960A CN 109279960 A CN109279960 A CN 109279960A CN 201811263978 A CN201811263978 A CN 201811263978A CN 109279960 A CN109279960 A CN 109279960A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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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
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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
Abstract
The invention belongs to coating controlled-release fertilizer domain variabilities to disclose a kind of wheat and corn coating controlled-release fertilizer and preparation method thereof；Raw material including following parts by weight: 124-158 parts of fertilizer core, the fertilizer core are made of urea, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, Diammonium phosphate (DAP), ammonium dihydrogen phosphate, potassium sulfate, potassium chloride, nitric acid phosphorus, calcium chloride, magnesium sulfate, sulfonic acid zinc, borax, ferrous sulfate, manganese sulfate, copper sulphate, ammonium molybdate, biological function bacterium, compound amino acid, seaweed extracted liquor, chitosan and water；1-2 parts of herbicide, the herbicide include one of glyphosate, butachlor or a variety of；1-4 parts of coated fertilizer, the coated fertilizer is as made by polyurethane, polyolefin, curing catalysts and organic solvent；Wheat and corn of the present invention is low with coating controlled-release fertilizer manufacturing cost, and the quality and effect of nutrient controlled release are good, and raw material used is small to environmental disruption, has significant production-increasing function to crop, is with a wide range of applications.
Description
Technical field
The present invention relates to coating controlled-release fertilizer technical fields, and in particular to a kind of wheat and corn coating controlled-release fertilizer and its preparation
Method.
Background technique
China's fertilizer consumption accounts for about the 20-30% of world Fertilizer total quantity consumed, ranks first in the world, developed country's chemical fertilizer
This season utilization rate average out to 50-60%, China's chemical fertilizer this season utilization rate are averagely only 30-35%.The loss of macronutrient
Waste not only brings huge economic loss to society, but also will cause serious environmental pollution.Currently, with fertilizer amount
Be continuously increased, devote exclusive attention to output and lay equal stress on quality and under environmental-friendly multiple target requires in agricultural product, the modification of fertilizer
Problem just seems even more important.Slow or controlled release fertilizer is developed, utilization rate of fertilizer is improved, reduces environmental pollution, be simple and easy
Measure is particularly suitable for the national conditions of China.China's chemical fertilizer utilization ratio is lower than one of the reason of developed country, is exactly in institute of developed country
The series taken applies fertilizers scientifically technology Chinese hard to work.The level of education of China peasant is low, and peasant household's land area is small and divides
It dissipates, planting system is complicated, and mechanization degree is low, and Agro-chemistry service system is difficult to set up and in place, rational application of fertilizers and other technologies are arranged
It applies and the convenient service of peasant's offer is provided；In addition, peasant has been unwilling on the agronomic conditions such as top dressing in developed area
It spends too much of his time and energy.Therefore, it is badly in need of a kind of materialization fertilizer product for integrating rational application of fertilizers, controlled-release technology.Newly
The appearance of type control release composite fertilizer can not only improve utilization rate of fertilizer, guarantee grain security, reduce environmental pollution, also meet
The actual demand of peasant.
Film-coated controlled release fertilizer is using granular chemical fertilizer as core, and surface layer coats the inorganic substances of one layer of low aqueous solubility or microsolubility
Or organic polymer, change the stripping property of chemical fertilizer nutrient, extends or control fertilizer nutrient discharges, make supply and the work of soil nutrient
Object needs fertilizer to require the new-type fertilizer dosage form coordinated.The type of film-coated controlled release fertilizer is divided from coated fertilizer, can be divided into inorganic matter packet
Film fertilizer and organic polymer coated fertilizer, the former majority are with the inorganic fertilizer containing certain nutrient or soil conditioner etc
Substance, the latter include organic synthesis object of organic polymer, low aqueous solubility or slightly solubility etc. as coated fertilizer.From coated release-controlled
From the point of view of the nutrient type of fertilizer, nitrogen, phosphorus, potassium a great number of elements and some microelements are in the column of research, still, main at present
If based on nitrogen, phosphorus, potassium coating fertilizer.
Currently, the research of coating controlled-release fertilizer both at home and abroad has had evolved to a height higher, technology is increasingly
The problem of maturation, nutrient controlled release properties are good, high production cost has obtained preliminary solution, and coated release-controlled fertilizer product is in crop field
Preliminary popularization has been obtained on crop, achieves phasic results.
What coating controlled-release fertilizer in the prior art mainly included is nitrogen-phosphorus-potassium compound fertilizer, includes for other microelements
It is fewer, therefore be not easy to absorption of the crop to microelement, plant easily caused to lack microelement；Meanwhile existing skill
Coating controlled-release fertilizer in art generally only coats once coating film, and at fertilising initial stage since coating film is than more complete, fertilizer efficiency is released
It is high-volume less；Over time, coating film is in atomization process, and the rate of fertilizer efficiency release can slowly be accelerated, this release
The rate that fertilizer absorbs is mismatched in mode and process of crop growth, it is contemplated that wheat and corn are two kinds of main grains in China
The harvest situation of food crop, wheat and corn has China's grain security important influence meaning.In consideration of it, how to provide one
Kind be suitable for that wheat and corn uses is that those skilled in the art need the technology that solves with coating controlled-release fertilizer and preparation method thereof
Problem.
Summary of the invention
The present invention is directed to above-mentioned problem in the prior art, and provides a kind of wheat and corn coating controlled-release fertilizer and its preparation
Method.
The present invention using following technical scheme in order to solve the above technical problems, realized:
A kind of wheat and corn coating controlled-release fertilizer is designed, the raw material including following parts by weight:
124-158 parts of fertilizer core, the fertilizer core by urea, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, Diammonium phosphate (DAP),
Ammonium dihydrogen phosphate, potassium sulfate, potassium chloride, nitric acid phosphorus, calcium chloride, magnesium sulfate, sulfonic acid zinc, borax, ferrous sulfate, manganese sulfate, sulphur
Sour copper, ammonium molybdate, biological function bacterium, compound amino acid, seaweed extracted liquor, chitosan and water are formed；
1-2 parts of herbicide, the herbicide include one of glyphosate, butachlor or a variety of；
1-4 parts of coated fertilizer, the coated fertilizer is by polyurethane, polyolefin, curing catalysts and organic solvent
It is made.
Preferably, in the fertilizer core each component parts by weight are as follows: 10-20 parts of urea, 10-20 parts of ammonium hydrogen carbonate,
10-20 parts of ammonium nitrate, 10-20 parts of ammonium sulfate, 10-20 parts of Diammonium phosphate (DAP), 10-20 parts of ammonium dihydrogen phosphate, 10-20 parts of potassium sulfate,
10-20 parts of potassium chloride, 10-20 parts of nitric acid phosphorus, 2-5 parts of calcium chloride, 2-5 parts of magnesium sulfate, 2-5 parts of sulfonic acid zinc, 2-5 parts of borax, sulphur
Sour 2-5 parts of ferrous iron, 2-5 parts of manganese sulfate, 2-5 parts of copper sulphate, 2-5 parts of ammonium molybdate, 2-5 parts of biological function bacterium, compound amino acid 2-5
Part, 2-5 parts of seaweed extracted liquor, 2-5 parts of chitosan, 10-50 parts of water.
Preferably, the polyurethane in the coating includes vegetable oil polyol based polyurethanes, the poly- ammonia of animal oil polyalcohol base
Ester, abandoned oil polyol based polyurethane, starch polyol based polyurethane, cellulose polyol based polyurethane, lignin polyalcohol
One or more of based polyurethanes.
Preferably, the polyolefin in the coated fertilizer includes one or more of polyethylene, polypropylene, polybutene.
Preferably, the curing catalysts in the coated fertilizer are triethanolamine, triethylenediamine, N, N- diformazan basic ring
One or more of hexylamine and organo-metallic catalyst.
Preferably, the organic solvent in the coated fertilizer includes one or more of turpentine oil, tetrachloro-ethylene.
Preferably, polyurethane, polyolefin, curing catalysts and the respective weight ratio of organic solvent in the coated fertilizer
Example are as follows: 4-6: 4-6: 1-2: 1.
The preparation method for designing a kind of wheat and corn coating controlled-release fertilizer, includes the following steps:
Step 1: firstly, fertilizer core each component solid material is carried out pulverization process respectively using pulverizer；Then by powder
Broken processing later solid material, other compositions and water, which are mixed together, uniformly just obtains the fertilizer core；
Step 2: it firstly, continuously adding herbicide in the fertilizer core prepared to step 1, and continuess to mix uniformly, obtains
Fertilizer core containing herbicide；Then, by no less than half weight and the fertilizer core containing herbicide be poured into granulator into
Row pelletization treatment；Then, it does not pelletize and fertilizer core containing herbicide drying and processing under the conditions of 40-60 DEG C, obtains by remaining
The powdered fertilizer core containing herbicide；
Step 3: coated fertilizer is prepared: by polyurethane, polyolefin, curing catalysts and organic solvent at 100-150 DEG C
Under the conditions of stirring and dissolving, coating solution is made；
Step 4: coating solution is added in seed-coating machine, carries out one layer of coating work to granular fertilizers core；
Step 5: being passed through the powdered fertilizer core containing herbicide to fluidized bed, using the spray head in fluidized bed by powder
The fertilizer core that shape contains herbicide is sprayed onto fertiliser granulates surface, completes one layer of packet fertilizer work；
Step 6: repeating step 4 and step 5 is multiple, achievable multilayer coating and the work of multilayer packet fertilizer, just
To the wheat and corn coating controlled-release fertilizer.
Preferably, the wheat and corn is nutty structure with coating controlled-release fertilizer, particle size range 2.0-6.0mm, always
Coating rate is the 1%-4% of total weight, and fertilizer releasing period is 4-8 months.
Preferably, the number of repetition of the step four is primary more than step 5 number of repetition.
A kind of wheat and corn coating controlled-release fertilizer proposed by the present invention and preparation method thereof, beneficial effect is:
(1) not only include NpK complex fertilizer in the fertilizer core of wheat and corn coating controlled-release fertilizer of the present invention, also wrap
Containing trace-element fertilizers such as calcareous fertilisers, fertiliser containing magnesium, zinc fertilizer, boron fertilizer, iron fertilizer, manganese fertilizer, function bacterium, amino acid, seaweed and chitosans,
The nutrition for making it be supplied to crop more balances, and is more conducive to plant growth；
It (2) include herbicide in the fertilizer core of wheat and corn coating controlled-release fertilizer of the present invention, by the controlled release of coating film,
It can play the role of killing weeds in the Life cycle of plant growth, persistently reduce absorption of the weeds to nutriment；
(3) wheat and corn of the present invention is coated with coating controlled-release fertilizer by the interval of coating and fertilizer, so that coating controlled-release fertilizer
Actually fertilising use process in, from outermost coating film successively dusting, release fertilizer efficiency, and then be able to maintain Controlled Release Fertilizer continue,
Evenly discharge fertilizer efficiency；Compared with coating controlled-release fertilizer in the prior art only has one layer of coating, multilayer coating can effective extended release
Time, the rate of release for balancing each stage fertilizer efficiency；
(4) wheat and corn of the present invention is mass produced with coating controlled-release fertilizer suitable for industrialization, and manufacturing cost is low, nutrient control
The quality and effect released are good, and raw material used is small to environmental disruption, have significant volume increase and synergistic effect to crop, have
Extremely wide application value.
Detailed description of the invention
The present invention is described in further detail for embodiment in reference to the accompanying drawing, but does not constitute to of the invention
Any restrictions.
Fig. 1 is N element cumulative release amount time history plot in inventive embodiments test result.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Embodiment one
A kind of wheat and corn coating controlled-release fertilizer of the invention, the raw material including following parts by weight:
124 parts of fertilizer core, the fertilizer core is by urea, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, Diammonium phosphate (DAP), phosphoric acid
Ammonium dihydrogen, potassium sulfate, potassium chloride, nitric acid phosphorus, calcium chloride, magnesium sulfate, sulfonic acid zinc, borax, ferrous sulfate, manganese sulfate, copper sulphate,
Ammonium molybdate, biological function bacterium, compound amino acid, seaweed extracted liquor, chitosan and water are formed；
1 part of herbicide, the herbicide include glyphosate, butachlor；
1 part of coated fertilizer, the coated fertilizer is by polyurethane, polyolefin, curing catalysts and organic solvent institute
It is made.
The parts by weight of each component in the fertilizer core are as follows: 10 parts of urea, 10 parts of ammonium hydrogen carbonate, 10 parts of ammonium nitrate, sulphur
10 parts of sour ammonium, 10 parts of Diammonium phosphate (DAP), 10 parts of ammonium dihydrogen phosphate, 10 parts of potassium sulfate, 10 parts of potassium chloride, 10 parts of nitric acid phosphorus, calcium chloride 2
Part, 2 parts of magnesium sulfate, 2 parts of sulfonic acid zinc, 2 parts of borax, 2 parts of ferrous sulfate, 2 parts of manganese sulfate, 2 parts of copper sulphate, 2 parts of ammonium molybdate, biology
2 parts of function bacterium, 2 parts of compound amino acid, 2 parts of seaweed extracted liquor, 2 parts of chitosan, 10 parts of water.
Polyurethane in the coating includes vegetable oil polyol based polyurethanes, animal oil polyol based polyurethane, discards
Oil polyalcohol based polyurethanes, starch polyol based polyurethane, cellulose polyol based polyurethane, the poly- ammonia of the polynary alcohol radical of lignin
Ester；Polyolefin in the coated fertilizer includes polyethylene, polypropylene, polybutene；Curing catalysts in the coated fertilizer
For triethanolamine, triethylenediamine, N, N- dimethyl cyclohexyl amine and organo-metallic catalyst；It is organic in the coated fertilizer
Solvent includes turpentine oil, tetrachloro-ethylene；Polyurethane, polyolefin, curing catalysts and organic solvent are each in the coated fertilizer
From weight ratio are as follows: 4: 4: 1: 1.
A kind of preparation method of wheat and corn coating controlled-release fertilizer of the invention, includes the following steps:
Step 1: firstly, fertilizer core each component solid material is carried out pulverization process respectively using pulverizer；Then by powder
Broken processing later solid material, other compositions and water, which are mixed together, uniformly just obtains the fertilizer core；
Step 2: it firstly, continuously adding herbicide in the fertilizer core prepared to step 1, and continuess to mix uniformly, obtains
Fertilizer core containing herbicide；Then, by half weight and fertilizer core containing herbicide is poured into granulator and pelletizes
Processing；Then, do not pelletize remaining and fertilizer core containing herbicide drying and processing under the conditions of 40 DEG C, obtain it is powdered containing
The fertilizer core of herbicide；
Step 3: coated fertilizer is prepared: by polyurethane, polyolefin, curing catalysts and organic solvent in 100 DEG C of conditions
Lower stirring and dissolving, is made coating solution；
Step 4: coating solution is added in seed-coating machine, carries out one layer of coating work to granular fertilizers core；
Step 5: being passed through the powdered fertilizer core containing herbicide to fluidized bed, using the spray head in fluidized bed by powder
The fertilizer core that shape contains herbicide is sprayed onto fertiliser granulates surface, completes one layer of packet fertilizer work；
Step 6: repeating step 4 and step 5 is multiple, achievable multilayer coating and the work of multilayer packet fertilizer, just
To the wheat and corn coating controlled-release fertilizer.
The wheat and corn is nutty structure with coating controlled-release fertilizer, and partial size 2.0mm, total coating rate is total weight
1%, fertilizer releasing period is 4 months；The number of repetition of the step four is that three times, step 5 number of repetition is twice.
Embodiment two
A kind of wheat and corn coating controlled-release fertilizer of the invention, the raw material including following parts by weight:
124 parts of fertilizer core, the fertilizer core is by urea, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, Diammonium phosphate (DAP), phosphoric acid
Ammonium dihydrogen, potassium sulfate, potassium chloride, nitric acid phosphorus, calcium chloride, magnesium sulfate, sulfonic acid zinc, borax, ferrous sulfate, manganese sulfate, copper sulphate,
Ammonium molybdate, biological function bacterium, compound amino acid, seaweed extracted liquor, chitosan and water are formed；
1 part of herbicide, the herbicide are glyphosate；
1 part of coated fertilizer, the coated fertilizer is by polyurethane, polyolefin, curing catalysts and organic solvent institute
It is made.
The parts by weight of each component in the fertilizer core are as follows: 10 parts of urea, 10 parts of ammonium hydrogen carbonate, 10 parts of ammonium nitrate, sulphur
10 parts of sour ammonium, 10 parts of Diammonium phosphate (DAP), 10 parts of ammonium dihydrogen phosphate, 10 parts of potassium sulfate, 10 parts of potassium chloride, 10 parts of nitric acid phosphorus, calcium chloride 2
Part, 2 parts of magnesium sulfate, 2 parts of sulfonic acid zinc, 2 parts of borax, 2 parts of ferrous sulfate, 2 parts of manganese sulfate, 2 parts of copper sulphate, 2 parts of ammonium molybdate, biology
2 parts of function bacterium, 2 parts of compound amino acid, 2 parts of seaweed extracted liquor, 2 parts of chitosan, 10 parts of water.
Polyurethane in the coating includes vegetable oil polyol based polyurethanes, animal oil polyol based polyurethane, discards
Oil polyalcohol based polyurethanes；Polyolefin in the coated fertilizer includes polyethylene, polypropylene；Solidification in the coated fertilizer
Catalyst is triethanolamine, triethylenediamine；Organic solvent in the coated fertilizer is turpentine oil；In the coated fertilizer
Polyurethane, polyolefin, curing catalysts and the respective weight ratio of organic solvent are as follows: 4: 4: 1: 1.
A kind of preparation method of wheat and corn coating controlled-release fertilizer of the invention, includes the following steps:
Step 1: firstly, fertilizer core each component solid material is carried out pulverization process respectively using pulverizer；Then by powder
Broken processing later solid material, other compositions and water, which are mixed together, uniformly just obtains the fertilizer core；
Step 2: it firstly, continuously adding herbicide in the fertilizer core prepared to step 1, and continuess to mix uniformly, obtains
Fertilizer core containing herbicide；Then, by 2/3rds weight and fertilizer core containing herbicide is poured into granulator and carries out
Pelletization treatment；Then, it does not pelletize and fertilizer core containing herbicide drying and processing under the conditions of 40 DEG C, obtains powdered by remaining
Fertilizer core containing herbicide；
Step 3: coated fertilizer is prepared: by polyurethane, polyolefin, curing catalysts and organic solvent in 100 DEG C of conditions
Lower stirring and dissolving, is made coating solution；
Step 4: coating solution is added in seed-coating machine, carries out one layer of coating work to granular fertilizers core；
Step 5: being passed through the powdered fertilizer core containing herbicide to fluidized bed, using the spray head in fluidized bed by powder
The fertilizer core that shape contains herbicide is sprayed onto fertiliser granulates surface, completes one layer of packet fertilizer work；
Step 6: repeating step 4 and step 5 is multiple, achievable multilayer coating and the work of multilayer packet fertilizer, just
To the wheat and corn coating controlled-release fertilizer.
The wheat and corn is nutty structure with coating controlled-release fertilizer, and partial size 2.0mm, total coating rate is total weight
1%, fertilizer releasing period is 4 months；The number of repetition of the step four is twice that step 5 number of repetition is primary.
Embodiment three
A kind of wheat and corn coating controlled-release fertilizer of the invention, the raw material including following parts by weight:
147 parts of fertilizer core, the fertilizer core is by urea, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, Diammonium phosphate (DAP), phosphoric acid
Ammonium dihydrogen, potassium sulfate, potassium chloride, nitric acid phosphorus, calcium chloride, magnesium sulfate, sulfonic acid zinc, borax, ferrous sulfate, manganese sulfate, copper sulphate,
Ammonium molybdate, biological function bacterium, compound amino acid, seaweed extracted liquor, chitosan and water are formed；
1.5 parts of herbicide, the herbicide include glyphosate, butachlor；
2 parts of coated fertilizer, the coated fertilizer is by polyurethane, polyolefin, curing catalysts and organic solvent institute
It is made.
The parts by weight of each component in the fertilizer core are as follows: 15 parts of urea, 15 parts of ammonium hydrogen carbonate, 10 parts of ammonium nitrate, sulphur
10 parts of sour ammonium, 10 parts of Diammonium phosphate (DAP), 10 parts of ammonium dihydrogen phosphate, 10 parts of potassium sulfate, 10 parts of potassium chloride, 10 parts of nitric acid phosphorus, calcium chloride 3
Part, 3 parts of magnesium sulfate, 3 parts of sulfonic acid zinc, 3 parts of borax, 3 parts of ferrous sulfate, 3 parts of manganese sulfate, 3 parts of copper sulphate, 3 parts of ammonium molybdate, biology
3 parts of function bacterium, 3 parts of compound amino acid, 3 parts of seaweed extracted liquor, 3 parts of chitosan, 15 parts of water.
Polyurethane in the coating includes vegetable oil polyol based polyurethanes, animal oil polyol based polyurethane, discards
Oil polyalcohol based polyurethanes, starch polyol based polyurethane, cellulose polyol based polyurethane, the poly- ammonia of the polynary alcohol radical of lignin
Ester；Polyolefin in the coated fertilizer includes polyethylene, polypropylene, polybutene；Curing catalysts in the coated fertilizer
For triethanolamine, triethylenediamine, N, N- dimethyl cyclohexyl amine and organo-metallic catalyst；It is organic in the coated fertilizer
Solvent includes turpentine oil, tetrachloro-ethylene；Polyurethane, polyolefin, curing catalysts and organic solvent are each in the coated fertilizer
From weight ratio are as follows: 5: 5: 1: 1.
A kind of preparation method of wheat and corn coating controlled-release fertilizer of the invention, includes the following steps:
Step 1: firstly, fertilizer core each component solid material is carried out pulverization process respectively using pulverizer；Then by powder
Broken processing later solid material, other compositions and water, which are mixed together, uniformly just obtains the fertilizer core；
Step 2: it firstly, continuously adding herbicide in the fertilizer core prepared to step 1, and continuess to mix uniformly, obtains
Fertilizer core containing herbicide；Then, by half weight and fertilizer core containing herbicide is poured into granulator and pelletizes
Processing；Then, do not pelletize remaining and fertilizer core containing herbicide drying and processing under the conditions of 50 DEG C, obtain it is powdered containing
The fertilizer core of herbicide；
Step 3: coated fertilizer is prepared: by polyurethane, polyolefin, curing catalysts and organic solvent in 120 DEG C of conditions
Lower stirring and dissolving, is made coating solution；
Step 4: coating solution is added in seed-coating machine, carries out one layer of coating work to granular fertilizers core；
Step 5: being passed through the powdered fertilizer core containing herbicide to fluidized bed, using the spray head in fluidized bed by powder
The fertilizer core that shape contains herbicide is sprayed onto fertiliser granulates surface, completes one layer of packet fertilizer work；
Step 6: repeating step 4 and step 5 is multiple, achievable multilayer coating and the work of multilayer packet fertilizer, just
To the wheat and corn coating controlled-release fertilizer.
The wheat and corn is nutty structure with coating controlled-release fertilizer, and particle size range 4.0mm, total coating rate is gross weight
The 2% of amount, fertilizer releasing period is 6 months；The number of repetition of the step four is three times that the number of repetition of the step 5 is
Twice.
Example IV
A kind of wheat and corn coating controlled-release fertilizer of the invention, the raw material including following parts by weight:
147 parts of fertilizer core, the fertilizer core is by urea, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, Diammonium phosphate (DAP), phosphoric acid
Ammonium dihydrogen, potassium sulfate, potassium chloride, nitric acid phosphorus, calcium chloride, magnesium sulfate, sulfonic acid zinc, borax, ferrous sulfate, manganese sulfate, copper sulphate,
Ammonium molybdate, biological function bacterium, compound amino acid, seaweed extracted liquor, chitosan and water are formed；
1.5 parts of herbicide, the herbicide include glyphosate, butachlor；
2 parts of coated fertilizer, the coated fertilizer is by polyurethane, polyolefin, curing catalysts and organic solvent institute
It is made.
The parts by weight of each component in the fertilizer core are as follows: 15 parts of urea, 15 parts of ammonium hydrogen carbonate, 10 parts of ammonium nitrate, sulphur
10 parts of sour ammonium, 10 parts of Diammonium phosphate (DAP), 10 parts of ammonium dihydrogen phosphate, 10 parts of potassium sulfate, 10 parts of potassium chloride, 10 parts of nitric acid phosphorus, calcium chloride 3
Part, 3 parts of magnesium sulfate, 3 parts of sulfonic acid zinc, 3 parts of borax, 3 parts of ferrous sulfate, 3 parts of manganese sulfate, 3 parts of copper sulphate, 3 parts of ammonium molybdate, biology
3 parts of function bacterium, 3 parts of compound amino acid, 3 parts of seaweed extracted liquor, 3 parts of chitosan, 15 parts of water.
Polyurethane in the coating includes vegetable oil polyol based polyurethanes, animal oil polyol based polyurethane, discards
Oil polyalcohol based polyurethanes, starch polyol based polyurethane；Polyolefin in the coated fertilizer includes polyethylene, polybutene；
Curing catalysts in the coated fertilizer are triethylenediamine, N, N- dimethyl cyclohexyl amine and organo-metallic catalyst；Institute
Stating the organic solvent in coated fertilizer is tetrachloro-ethylene；Polyurethane, polyolefin, curing catalysts and have in the coated fertilizer
The respective weight ratio of solvent is 5: 5: 1: 1.
A kind of preparation method of wheat and corn coating controlled-release fertilizer of the invention, includes the following steps:
Step 1: firstly, fertilizer core each component solid material is carried out pulverization process respectively using pulverizer；Then by powder
Broken processing later solid material, other compositions and water, which are mixed together, uniformly just obtains the fertilizer core；
Step 2: it firstly, continuously adding herbicide in the fertilizer core prepared to step 1, and continuess to mix uniformly, obtains
Fertilizer core containing herbicide；Then, by 3/4ths weight and fertilizer core containing herbicide is poured into granulator and carries out
Pelletization treatment；Then, it does not pelletize and fertilizer core containing herbicide drying and processing under the conditions of 50 DEG C, obtains powdered by remaining
Fertilizer core containing herbicide；
Step 3: coated fertilizer is prepared: by polyurethane, polyolefin, curing catalysts and organic solvent in 120 DEG C of conditions
Lower stirring and dissolving, is made coating solution；
Step 4: coating solution is added in seed-coating machine, carries out one layer of coating work to granular fertilizers core；
Step 5: being passed through the powdered fertilizer core containing herbicide to fluidized bed, using the spray head in fluidized bed by powder
The fertilizer core that shape contains herbicide is sprayed onto fertiliser granulates surface, completes one layer of packet fertilizer work；
Step 6: repeating step 4 and step 5 is multiple, achievable multilayer coating and the work of multilayer packet fertilizer, just
To the wheat and corn coating controlled-release fertilizer.
The wheat and corn is nutty structure with coating controlled-release fertilizer, and particle size range 4.0mm, total coating rate is gross weight
The 2% of amount, fertilizer releasing period is 6 months；The number of repetition of the step four is primary more than step 5 number of repetition.
Embodiment five
A kind of wheat and corn coating controlled-release fertilizer of the invention, the raw material including following parts by weight:
158 parts of fertilizer core, the fertilizer core is by urea, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, Diammonium phosphate (DAP), phosphoric acid
Ammonium dihydrogen, potassium sulfate, potassium chloride, nitric acid phosphorus, calcium chloride, magnesium sulfate, sulfonic acid zinc, borax, ferrous sulfate, manganese sulfate, copper sulphate,
Ammonium molybdate, biological function bacterium, compound amino acid, seaweed extracted liquor, chitosan and water are formed；
1-2 parts of herbicide, the herbicide include glyphosate, butachlor；
1-4 parts of coated fertilizer, the coated fertilizer is by polyurethane, polyolefin, curing catalysts and organic solvent
It is made.
The parts by weight of each component in the fertilizer core are as follows: 20 parts of urea, 10 parts of ammonium hydrogen carbonate, 10 parts of ammonium nitrate, sulphur
10 parts of sour ammonium, 20 parts of Diammonium phosphate (DAP), 10 parts of ammonium dihydrogen phosphate, 10 parts of potassium sulfate, 10 parts of potassium chloride, 10 parts of nitric acid phosphorus, calcium chloride 5
Part, 5 parts of magnesium sulfate, 2 parts of sulfonic acid zinc, 2 parts of borax, 2 parts of ferrous sulfate, 2 parts of manganese sulfate, 2 parts of copper sulphate, 2 parts of ammonium molybdate, biology
2 parts of function bacterium, 2 parts of compound amino acid, 2 parts of seaweed extracted liquor, 2 parts of chitosan, 18 parts of water.
Polyurethane in the coating includes vegetable oil polyol based polyurethanes, animal oil polyol based polyurethane, discards
Oil polyalcohol based polyurethanes, starch polyol based polyurethane, cellulose polyol based polyurethane, the poly- ammonia of the polynary alcohol radical of lignin
Ester；Polyolefin in the coated fertilizer includes polyethylene, polypropylene, polybutene；Curing catalysts in the coated fertilizer
For triethanolamine, triethylenediamine, N, N- dimethyl cyclohexyl amine and organo-metallic catalyst；It is organic in the coated fertilizer
Solvent includes turpentine oil, tetrachloro-ethylene；Polyurethane, polyolefin, curing catalysts and organic solvent are each in the coated fertilizer
From weight ratio be 6: 6: 2: 1.
A kind of preparation method of wheat and corn coating controlled-release fertilizer of the invention, includes the following steps:
Step 1: firstly, fertilizer core each component solid material is carried out pulverization process respectively using pulverizer；Then by powder
Broken processing later solid material, other compositions and water, which are mixed together, uniformly just obtains the fertilizer core；
Step 2: it firstly, continuously adding herbicide in the fertilizer core prepared to step 1, and continuess to mix uniformly, obtains
Fertilizer core containing herbicide；Then, by half weight and fertilizer core containing herbicide is poured into granulator and pelletizes
Processing；Then, it does not pelletize and fertilizer core containing herbicide drying and processing under the conditions of 40-60 DEG C, obtains powdered by remaining
Fertilizer core containing herbicide；
Step 3: coated fertilizer is prepared: by polyurethane, polyolefin, curing catalysts and organic solvent in 150 DEG C of conditions
Lower stirring and dissolving, is made coating solution；
Step 4: coating solution is added in seed-coating machine, carries out one layer of coating work to granular fertilizers core；
Step 5: being passed through the powdered fertilizer core containing herbicide to fluidized bed, using the spray head in fluidized bed by powder
The fertilizer core that shape contains herbicide is sprayed onto fertiliser granulates surface, completes one layer of packet fertilizer work；
Step 6: repeating step 4 and step 5 is multiple, achievable multilayer coating and the work of multilayer packet fertilizer, just
To the wheat and corn coating controlled-release fertilizer.
The wheat and corn is nutty structure with coating controlled-release fertilizer, and particle size range 6.0mm, total coating rate is gross weight
The 4% of amount, fertilizer releasing period is 8 months；The number of repetition of the step four is primary more than step 5 number of repetition.
Experimental verification
Choose the embodiment of the present invention one made by product, trial crops are wheat, during the plantation of wheat, monthly with
Machine tests the releasing curve diagram that nitrogen changes over time in its soil sample, it can be seen that this hair to the soil sample in wheat planting base
The coating controlled-release fertilizer of bright the proposed product of embodiment has very long deenergized period, and the rate holds steady of its release, makes
Obtain crop has relatively high rate of release within each deenergized period.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of wheat and corn coating controlled-release fertilizer, which is characterized in that the raw material including following parts by weight:
124-158 parts of fertilizer core, the fertilizer core is by urea, ammonium hydrogen carbonate, ammonium nitrate, ammonium sulfate, Diammonium phosphate (DAP), phosphoric acid
Ammonium dihydrogen, potassium sulfate, potassium chloride, nitric acid phosphorus, calcium chloride, magnesium sulfate, sulfonic acid zinc, borax, ferrous sulfate, manganese sulfate, copper sulphate,
Ammonium molybdate, biological function bacterium, compound amino acid, seaweed extracted liquor, chitosan and water are formed；
1-2 parts of herbicide, the herbicide include one of glyphosate, butachlor or a variety of；
1-4 parts of coated fertilizer, the coated fertilizer are made by polyurethane, polyolefin, curing catalysts and organic solvent
At.
2. a kind of wheat and corn coating controlled-release fertilizer according to claim 1, which is characterized in that each in the fertilizer core
The parts by weight of component are as follows: 10-20 parts of urea, 10-20 parts of ammonium hydrogen carbonate, 10-20 parts of ammonium nitrate, 10-20 parts of ammonium sulfate, phosphoric acid
10-20 parts of diammonium, 10-20 parts of ammonium dihydrogen phosphate, 10-20 parts of potassium sulfate, 10-20 parts of potassium chloride, 10-20 parts of nitric acid phosphorus, chlorination
2-5 parts of calcium, 2-5 parts of magnesium sulfate, 2-5 parts of sulfonic acid zinc, 2-5 parts of borax, 2-5 parts of ferrous sulfate, 2-5 parts of manganese sulfate, copper sulphate 2-5
Part, 2-5 parts of ammonium molybdate, 2-5 parts of biological function bacterium, 2-5 parts of compound amino acid, 2-5 parts of seaweed extracted liquor, 2-5 parts of chitosan, water
10-50 parts.
3. a kind of wheat and corn coating controlled-release fertilizer according to claim 1, which is characterized in that the poly- ammonia in the coating
Ester includes that vegetable oil polyol based polyurethanes, animal oil polyol based polyurethane, abandoned oil polyol based polyurethane, starch are polynary
One or more of alcohol based polyurethanes, cellulose polyol based polyurethane, lignin polyol based polyurethane.
4. a kind of wheat and corn coating controlled-release fertilizer according to claim 1, which is characterized in that in the coated fertilizer
Polyolefin includes one or more of polyethylene, polypropylene, polybutene.
5. a kind of wheat and corn coating controlled-release fertilizer according to claim 1, which is characterized in that in the coated fertilizer
Curing catalysts be triethanolamine, triethylenediamine, N, one of N- dimethyl cyclohexyl amine and organo-metallic catalyst or
It is several.
6. a kind of wheat and corn coating controlled-release fertilizer according to claim 1, which is characterized in that in the coated fertilizer
Organic solvent includes one or more of turpentine oil, tetrachloro-ethylene.
7. a kind of wheat and corn coating controlled-release fertilizer according to claim 1, which is characterized in that gather in the coated fertilizer
Urethane, polyolefin, curing catalysts and the respective weight ratio of organic solvent are as follows: 4-6: 4-6: 1-2: 1.
8. the preparation method of any one wheat and corn coating controlled-release fertilizer, feature as described in claim 1 to claim 7
It is, includes the following steps:
Step 1: firstly, fertilizer core each component solid material is carried out pulverization process respectively using pulverizer；It then will be at crushing
It manages later solid material, other compositions and water and is mixed together the fertilizer core described in uniformly just obtaining；
Step 2: it firstly, continuously adding herbicide in the fertilizer core prepared to step 1, and continuess to mix uniformly, is contained
The fertilizer core of herbicide；Then, by no less than half weight and the fertilizer core containing herbicide is poured into granulator and makes
Grain processing；Then, it does not pelletize remaining and fertilizer core containing herbicide drying and processing under the conditions of 40-60 DEG C, obtains powder
Shape contains the fertilizer core of herbicide；
Step 3: coated fertilizer is prepared: by polyurethane, polyolefin, curing catalysts and organic solvent in 100-150 DEG C of condition
Lower stirring and dissolving, is made coating solution；
Step 4: coating solution is added in seed-coating machine, carries out one layer of coating work to granular fertilizers core；
Step 5: it is passed through the powdered fertilizer core containing herbicide to fluidized bed, is contained using the spray head in fluidized bed by powdered
There is the fertilizer core of herbicide to be sprayed onto fertiliser granulates surface, completes one layer of packet fertilizer work；
Step 6: repeating step 4 and step 5 is multiple, and achievable multilayer coating and the work of multilayer packet fertilizer just obtain institute
The wheat and corn coating controlled-release fertilizer stated.
9. a kind of preparation method of wheat corn coating controlled-release fertilizer according to claim 8, which is characterized in that described is small
Wheat corn is nutty structure with coating controlled-release fertilizer, and particle size range 2.0-6.0mm, total coating rate is the 1%-4% of total weight,
Fertilizer releasing period is 4-8 months.
10. a kind of preparation method of wheat corn coating controlled-release fertilizer according to claim 8, which is characterized in that described
The number of repetition of step 4 is primary more than step 5 number of repetition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811263978.1A CN109279960A (en) | 2018-10-26 | 2018-10-26 | A kind of wheat and corn coating controlled-release fertilizer and preparation method thereof |
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| CN201811263978.1A CN109279960A (en) | 2018-10-26 | 2018-10-26 | A kind of wheat and corn coating controlled-release fertilizer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981603A (en) * | 2019-12-17 | 2020-04-10 | 中盐安徽红四方肥业股份有限公司 | Coated slow-release fertilizer for wheat and preparation method and application thereof |
| CN112159269A (en) * | 2020-09-23 | 2021-01-01 | 华南农业大学 | Vegetable oil-based polyurethane coated fertilizer and preparation method thereof |
-
2018
- 2018-10-26 CN CN201811263978.1A patent/CN109279960A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981603A (en) * | 2019-12-17 | 2020-04-10 | 中盐安徽红四方肥业股份有限公司 | Coated slow-release fertilizer for wheat and preparation method and application thereof |
| CN110981603B (en) * | 2019-12-17 | 2022-04-29 | 中盐安徽红四方肥业股份有限公司 | Coated slow-release fertilizer for wheat and preparation method and application thereof |
| CN112159269A (en) * | 2020-09-23 | 2021-01-01 | 华南农业大学 | Vegetable oil-based polyurethane coated fertilizer and preparation method thereof |
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