CN105819951A - Water soluble fertilizer and preparation method thereof - Google Patents
Water soluble fertilizer and preparation method thereof Download PDFInfo
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- CN105819951A CN105819951A CN201610142294.0A CN201610142294A CN105819951A CN 105819951 A CN105819951 A CN 105819951A CN 201610142294 A CN201610142294 A CN 201610142294A CN 105819951 A CN105819951 A CN 105819951A
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- parts
- water
- sulfate
- water soluble
- soluble 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
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a water soluble fertilizer, which is composed of the following raw materials in parts by weight: 10 to 15 parts of calcium superphosphate, 10 to 15 parts of urea, 3 to 6 parts of ammonium sulfate, 10 to 15 parts of potassium dihydrogen phosphate, 5 to 7 parts of potassium sulfate, 1 to 2 parts of ferrous sulfate, 1 to 2 parts of zinc sulfate, 2 to 5 parts of ferrous gluconate, 5 to 8 parts of liquid composite enzyme preparation, 9 to 17 parts of promoter, and 100 to 200 parts of water. The invention also discloses a preparation method of the water soluble fertilizer. The water soluble fertilizer has the advantages that the nutrients are comprehensive; the water soluble fertilizer is in a solid state, is convenient to store and transport, can be well dispersed in water, is capable of being dissolved rapidly and completely, does not obstruct the pipeline, can guarantee the fertilizing effect, and at the same time, can prevent soil hardening and increase the dispersity of soil; so the quality and cultivating property of soil are both improved, the water and the fertilizer can be applied to the fields at the same time, the water soluble fertilizer is user-friendly, and the labor cost is reduced.
Description
Technical field
The invention belongs to Water soluble fertilizer technical field, be specifically related to a kind of Water soluble fertilizer and preparation method thereof.
Background technology
Water soluble fertilizer is a kind of water-soluble polyelement composite fertilizer, is a kind of new-type fertilizer of rising in recent years, and it can be fast
Being dissolved in the water of speed, it is easier to absorbed by crops, and absorption rate is of a relatively high, it is achieved water-fertilizer integral, reach
Water-saving saves the effect of fertile saving of labor.China is a large agricultural country, populous, and water resource famine, occupancy volume per person is suitable
In the 1/4 of world occupancy volume per person, the share for agricultural production is also constantly declining, and has formed asks the severeest
Topic, agriculturally, greatly developing of water-saving fertilizer urgently can not be treated.
China greatly develops modern agriculture at present, increasing to the demand of new-type fertilizer, and requires more and more higher.
Along with the rise of water-saving agriculture, the especially full water-soluble fertilizer of water-soluble fertilizer obtains development opportunity.The life of concentration is compared at fruit and vegerable
Producing base, the popularizing area of water-soluble fertilizer is big, peasant household's degree of recognition is high.Owing to conventional composite fertilizer raw material scarcely possesses the most water-soluble
Feature, the fertilizer commonly used in agricultural such as ground phosphate rock, calcium superphosphate, calcium magnesium phosphate etc., owing to dissolubility is limited, it is impossible to as water
The raw material of molten fertilizer；Even if select dissolubility preferably ammonium dihydrogen phosphate, potassium nitrate, potassium sulfate etc. as Water soluble fertilizer raw material, due to
Limited purity, it is also difficult to meet the most water-soluble requirement.Existing conventional fertilizers raw material becomes Water soluble fertilizer to be needed constantly to purify, not only
Causing energy consumption to raise, cost increases, and nutrient change is single.
Furthermore, Water soluble fertilizer is typically the complex of various nutrient elements, due to the performance of different fertilizer raw material in compound
There are differences, the Water soluble fertilizer being made up of plurality of raw materials self performance and change of environment in storage, use, cause fertilizer water-soluble
Property be deteriorated, react to each other time the most water-soluble generation precipitation, this is serious defect to the use of Water soluble fertilizer, it is impossible to adapt to water completely
The requirement of fertile Integrated fertilizer application, not only can result in blockage pipeline, and fertilizer efficiency can heavy losses.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, the invention provides a kind of good dispersion, rapid solution in water, do not block up
The Water soluble fertilizer of plug pipeline, it is adaptable to the requirement of water-fertilizer integral fertilising.
Present invention also offers the preparation method of a kind of Water soluble fertilizer.
It is an object of the invention to be achieved through the following technical solutions:
A kind of Water soluble fertilizer, is made up of the raw material of following weight portion: calcium superphosphate 10-15 part, carbamide 10-15 part, sulfur ammonium 3-6
Part, potassium dihydrogen phosphate 10-15 part, potassium sulfate 5-7 part, ferrous sulfate 1-2 part, zinc sulfate 1-2 part, Ferrous gluconate 2-5 part,
Liquid complex enzyme preparation 5-8 part, accelerator 9-17 part, water 100-200 part；
Described accelerator is kojic acid, garlicin, hyaluronate sodium and the pulullan polysaccharide weight according to 1:0.5-1.5:2-3:3-4
Than composition；
Described liquid complex enzyme preparation is by fosterage of plants enzyme 10%, azotase 22%, phosphorus decomposing enzyme 22%, potassium decomposing enzyme 16%, xylan
Enzyme 13% and cellulase 17%.
Preferably, a kind of Water soluble fertilizer, it is made up of the raw material of following weight portion: calcium superphosphate 13 parts, 12 parts of carbamide, sulfur
Ammonium 4 parts, potassium dihydrogen phosphate 13 parts, potassium sulfate 6 parts, 1.5 parts of ferrous sulfate, 1.5 parts of zinc sulfate, Ferrous gluconate 4 parts, liquid
Compound enzymic preparation 7 parts, accelerator 13 parts, 150 parts of water.
The preparation method of a kind of Water soluble fertilizer, is prepared by following steps:
1) weigh following raw material according to weight portion: calcium superphosphate, carbamide, sulfur ammonium, potassium dihydrogen phosphate, potassium sulfate, ferrous sulfate,
Zinc sulfate, Ferrous gluconate, liquid complex enzyme preparation, accelerator, water；
2) by calcium superphosphate, carbamide, sulfur ammonium, potassium dihydrogen phosphate, potassium sulfate, ferrous sulfate, zinc sulfate, Ferrous gluconate and water
Add in reactor, stirring and dissolving, obtain solution 1；
3) accelerator is added in solution 1, stir 10 minutes, add liquid complex enzyme preparation, stir 5 minutes, obtain solution 2；
4) solution 2 is sent into homogenizing in high pressure homogenizer, each raw material is refined to nanoscale further, obtain solution 3；
5) by solution 3 condensing crystallizing, being spray-dried, crushing packing can be prepared by Water soluble fertilizer.
The pressure of described high pressure homogenizer is 150MPa, and temperature is 40 DEG C, and the time is 15 minutes.
The Water soluble fertilizer of the present invention is after research and development, and in Shandong, the demonstration result of multiple counties and cities all obtains extraordinary effect.
Beneficial effects of the present invention:
1. the Water soluble fertilizer of the present invention, by dissolving rapidly, improves the utilization rate of available nutrient in fertilizer, improves fertilizer efficiency 10%-
30%, chemical fertilizer raw material is used directly for Water soluble fertilizer raw material without purifying, and reduces Water soluble fertilizer cost.
2. the Water soluble fertilizer nutrient of the present invention is complete, and is solid, convenient storage and transport；Good dispersion in water, quickly
It is completely dissolved, not blocking pipeline, while ensureing fertilizer efficiency, soil block can be prevented, increase the dispersibility of soil, thus improve
The soil texture and Drafting Ability, reach the requirement of water-fertilizer integral fertilising, easy to use, saves labour cost.
3. the Water soluble fertilizer of the present invention uses accelerator, can promote the dissolving of fertilizer, store, carries and absorb, and exists simultaneously
The root hair of plant, top layer forms thin film, and protection root hair also promotes that cell grows, and connects with root hair for nutrient, moisture in soil
The delivery platform touched, it is also possible to reduce the generation of pest and disease damage, promotes the breeding of microorganism;Liquid complex enzyme preparation, various enzymes are assisted
Same-action, is greatly saved time and energy that crops oneself's synzyme needs, can not only accelerate growth and the maturation of plant,
And energy needed for being greatly saved crops oneself's synzyme or be greatly saved the chemical fertilizer by providing these energy to be consumed
Amount；Accelerator and the common effect of liquid complex enzyme preparation, improve fertilizer efficiency, the real fertile potentiation of realization joint.
Detailed description of the invention
Below by way of detailed description of the invention, the present invention is described in further detail, but this should be interpreted as the present invention
Scope be only limitted to Examples below.In the case of without departing from said method thought of the present invention, according to ordinary skill
Various replacements that knowledge and customary means are made or change, should be included in the scope of the present invention.
The garlicin of the present invention is 25% garlicin that Weifang bio tech ltd produces.
Raw material used by the present invention is what market was commercially available.
Embodiment 1
A kind of Water soluble fertilizer, is made up of the raw material of following weight portion: calcium superphosphate 10 parts, 15 parts of carbamide, sulfur ammonium 3 parts, phosphoric acid
Potassium dihydrogen 15 parts, potassium sulfate 5 parts, 1 part of ferrous sulfate, 1 part of zinc sulfate, Ferrous gluconate 2 parts, 5 parts of liquid complex enzyme preparation,
Accelerator 9 parts, 200 parts of water；
Described accelerator is that kojic acid, garlicin, hyaluronate sodium and pulullan polysaccharide form according to the weight ratio of 1:0.5:2:4
's；
Described liquid complex enzyme preparation is by fosterage of plants enzyme 10%, azotase 22%, phosphorus decomposing enzyme 22%, potassium decomposing enzyme 16%, xylan
Enzyme 13% and cellulase 17%.
The preparation method of a kind of Water soluble fertilizer, is prepared by following steps:
1) weigh following raw material according to weight portion: calcium superphosphate, carbamide, sulfur ammonium, potassium dihydrogen phosphate, potassium sulfate, ferrous sulfate,
Zinc sulfate, Ferrous gluconate, liquid complex enzyme preparation, accelerator, water；
2) by calcium superphosphate, carbamide, sulfur ammonium, potassium dihydrogen phosphate, potassium sulfate, ferrous sulfate, zinc sulfate, Ferrous gluconate and water
Add in reactor, stirring and dissolving, obtain solution 1；
3) accelerator is added in solution 1, stir 10 minutes, add liquid complex enzyme preparation, stir 5 minutes, obtain solution 2；
4) solution 2 is sent into homogenizing in high pressure homogenizer, each raw material is refined to nanoscale further, obtain solution 3；
5) by solution 3 condensing crystallizing, being spray-dried, crushing packing can be prepared by Water soluble fertilizer.
The pressure of described high pressure homogenizer is 150MPa, and temperature is 40 DEG C, and the time is 15 minutes.
Embodiment 2
A kind of Water soluble fertilizer, is made up of the raw material of following weight portion: calcium superphosphate 12 parts, 14 parts of carbamide, sulfur ammonium 4 parts, phosphoric acid
Potassium dihydrogen 14 parts, potassium sulfate 6 parts, 1.5 parts of ferrous sulfate, 1.5 parts of zinc sulfate, Ferrous gluconate 3 parts, liquid complex enzyme preparation
6 parts, accelerator 11 parts, 180 parts of water.
Described accelerator is kojic acid, garlicin, hyaluronate sodium and the pulullan polysaccharide weight ratio according to 1:1:2.5:3.5
Composition.
Remaining is with embodiment 1.
Embodiment 3
A kind of Water soluble fertilizer, is made up of the raw material of following weight portion: calcium superphosphate 13 parts, 12 parts of carbamide, sulfur ammonium 4 parts, phosphoric acid
Potassium dihydrogen 13 parts, potassium sulfate 6 parts, 1.5 parts of ferrous sulfate, 1.5 parts of zinc sulfate, Ferrous gluconate 4 parts, liquid complex enzyme preparation
7 parts, accelerator 13 parts, 150 parts of water.
Described accelerator is kojic acid, garlicin, hyaluronate sodium and the pulullan polysaccharide weight ratio according to 1:1:2.5:3.5
Composition.
Remaining is with embodiment 1.
Embodiment 4
A kind of Water soluble fertilizer, is made up of the raw material of following weight portion: calcium superphosphate 14 parts, 11 parts of carbamide, sulfur ammonium 5 parts, phosphoric acid
Potassium dihydrogen 12 parts, potassium sulfate 6 parts, 1.5 parts of ferrous sulfate, 1.5 parts of zinc sulfate, Ferrous gluconate 4 parts, liquid complex enzyme preparation
7 parts, accelerator 15 parts, 120 parts of water.
Described accelerator is kojic acid, garlicin, hyaluronate sodium and the pulullan polysaccharide weight ratio according to 1:1:2.5:3.5
Composition.
Remaining is with embodiment 1.
Embodiment 5
A kind of Water soluble fertilizer, is made up of the raw material of following weight portion: calcium superphosphate 15 parts, 10 parts of carbamide, sulfur ammonium 6 parts, phosphoric acid
Potassium dihydrogen 10 parts, potassium sulfate 7 parts, 2 parts of ferrous sulfate, 2 parts of zinc sulfate, Ferrous gluconate 5 parts, 8 parts of liquid complex enzyme preparation,
Accelerator 17 parts, 100 parts of water.
Described accelerator is kojic acid, garlicin, hyaluronate sodium and the pulullan polysaccharide weight ratio group according to 1:1.5:3:3
Become.
Remaining is with embodiment 1.
Matched group 1
Water soluble fertilizer is prepared by following steps: weigh following raw material according to weight portion: calcium superphosphate 13 parts, carbamide 12
Part, sulfur ammonium 4 parts, potassium dihydrogen phosphate 13 parts, potassium sulfate 6 parts, 1.5 parts of ferrous sulfate, 1.5 parts of zinc sulfate, Ferrous gluconate 4
Part, 150 parts of water, add in reactor, stirring and dissolving, 150MPa in rear high pressure homogenizer, homogenizing 15 minutes under the conditions of 40 DEG C, will
Each raw material is refined to nanoscale, then condensing crystallizing further, is spray-dried, and crushing packing can be prepared by Water soluble fertilizer.
Semen Tritici aestivi fertilizer efficiency is tested
This experimental establishment, in Jining City in Shandong Province, uses embodiment of the present invention 1-5 and matched group 1 in seedling stage to the pustulation period of Semen Tritici aestivi
The Water soluble fertilizer of preparation 3 times, dilutes 500 times and sprays by each 200 grams.Matched group 2 sprays equivalent clear water simultaneously.Give birth to before results
Character investigation subregion note are produced.Experimental result is as shown in table 1:
The impact on wheat growth of table 1 Water soluble fertilizer
Chinese cabbage fertilizer efficiency is tested
This experimental establishment is in Jining City in Shandong Province, and it is experimental group that the Water soluble fertilizer of embodiment 1-5 and matched group 1 preparation dilutes 500 times
1-5 and matched group 1；If clear water is matched group 2.
Experimental technique is as follows:
1) Chinese cabbage seed is respectively with matched group 1-2 and experimental group 1-5 seed soaking 10h, and in 25 DEG C of constant incubators, conventional accelerating germination measures
Its germination percentage；
2) choose each group of soaking and each 25 of the good Chinese cabbage seed that germinates respectively, be seeded in hole tray, 25 DEG C of constant temperature culture
Cellar culture in case, measures plant height, root length after 7 days；
3) hole tray in constant incubator is taken out, grow under natural conditions, within every 7 days, spray embodiment 1-5 and matched group 1
The water-soluble fertilizer of preparation, it is comparison that matched group 2 sprays clear water, sprays continuously 3 times, gathers after 45 days, calculates its yield.Result such as table
Shown in 2.
The impact that Chinese cabbage is grown by table 2 Water soluble fertilizer
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention.Every real according to inventive technique
Any simple modification, change and the equivalence change that confrontation above example is made, all still falls within the guarantor of technical solution of the present invention
In the range of protecting.
Claims (4)
1. a Water soluble fertilizer, it is characterised in that be made up of the raw material of following weight portion: calcium superphosphate 10-15 part, carbamide
10-15 part, sulfur ammonium 3-6 part, potassium dihydrogen phosphate 10-15 part, potassium sulfate 5-7 part, ferrous sulfate 1-2 part, zinc sulfate 1-2 part, Portugal
Grape saccharic acid ferrous iron 2-5 part, liquid complex enzyme preparation 5-8 part, accelerator 9-17 part, water 100-200 part；
Described accelerator is kojic acid, garlicin, hyaluronate sodium and the pulullan polysaccharide weight according to 1:0.5-1.5:2-3:3-4
Than composition；
Described liquid complex enzyme preparation is by fosterage of plants enzyme fosterage of plants enzyme 10%, azotase 22%, phosphorus decomposing enzyme 22%, potassium decomposing enzyme
16%, xylanase 13% and cellulase 17%.
Water soluble fertilizer the most according to claim 1, it is characterised in that be made up of the raw material of following weight portion: peroxophosphoric acid
Calcium 13 parts, 12 parts of carbamide, sulfur ammonium 4 parts, potassium dihydrogen phosphate 13 parts, potassium sulfate 6 parts, 1.5 parts of ferrous sulfate, 1.5 parts of zinc sulfate, Portugal
Ferrous 4 parts of grape saccharic acid, 7 parts of liquid complex enzyme preparation, accelerator 13 parts, 150 parts of water.
3. the preparation method of the Water soluble fertilizer described in a claim 1 or 2, it is characterised in that be to be prepared by following steps
:
1) weigh following raw material according to weight portion: calcium superphosphate, carbamide, sulfur ammonium, potassium dihydrogen phosphate, potassium sulfate, ferrous sulfate,
Zinc sulfate, Ferrous gluconate, liquid complex enzyme preparation, accelerator, water；
2) by calcium superphosphate, carbamide, sulfur ammonium, potassium dihydrogen phosphate, potassium sulfate, ferrous sulfate, zinc sulfate, Ferrous gluconate and water
Add in reactor, stirring and dissolving, obtain solution 1；
3) accelerator is added in solution 1, stir 10 minutes, add liquid complex enzyme preparation, stir 5 minutes, obtain solution 2；
4) solution 2 is sent into homogenizing in high pressure homogenizer, each raw material is refined to nanoscale further, obtain solution 3；
5) by solution 3 condensing crystallizing, being spray-dried, crushing packing can be prepared by Water soluble fertilizer.
Preparation method the most according to claim 3, it is characterised in that the pressure of described high pressure homogenizer is 150MPa, temperature
Degree is 40 DEG C, and the time is 15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142294.0A CN105819951A (en) | 2016-03-14 | 2016-03-14 | Water soluble fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142294.0A CN105819951A (en) | 2016-03-14 | 2016-03-14 | Water soluble fertilizer and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105819951A true CN105819951A (en) | 2016-08-03 |
Family
ID=56987338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610142294.0A Pending CN105819951A (en) | 2016-03-14 | 2016-03-14 | Water soluble fertilizer and preparation method thereof |
Country Status (1)
| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827594A (en) * | 2017-11-30 | 2018-03-23 | 贵阳开磷化肥有限公司 | A kind of humic acid Water soluble fertilizer of long-acting stabilization and preparation method thereof |
| CN107892617A (en) * | 2017-11-29 | 2018-04-10 | 佛山科学技术学院 | A kind of composite foliage fertilizer and preparation method thereof |
| CN108034426A (en) * | 2017-12-20 | 2018-05-15 | 袁阔 | A kind of agent for preserving soil moisture and its preparation method and application |
| CN108191580A (en) * | 2018-03-12 | 2018-06-22 | 苏英伟 | A kind of Water soluble fertilizer suitable for water-fertilizer integral |
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| CN102603391A (en) * | 2012-03-30 | 2012-07-25 | 广西宇鑫生物科技有限公司 | Compound amino acid organic fertilizer and production method of compound amino acid organic fertilizer |
| CN103708964A (en) * | 2013-12-30 | 2014-04-09 | 成都新柯力化工科技有限公司 | Instant chelated solid water-soluble fertilizer |
| CN103964932A (en) * | 2013-01-24 | 2014-08-06 | 邵光萍 | Water-soluble fertilizer containing a large number of elements, and preparation method thereof |
| CN104961527A (en) * | 2015-07-01 | 2015-10-07 | 江苏中农肥业有限公司 | Macro-element water-soluble fertilizer and preparation method thereof |
| CN105016910A (en) * | 2015-08-25 | 2015-11-04 | 罗跃东 | Water and fertilizer integrated water-soluble fertilizer and preparation method thereof |
-
2016
- 2016-03-14 CN CN201610142294.0A patent/CN105819951A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603391A (en) * | 2012-03-30 | 2012-07-25 | 广西宇鑫生物科技有限公司 | Compound amino acid organic fertilizer and production method of compound amino acid organic fertilizer |
| CN103964932A (en) * | 2013-01-24 | 2014-08-06 | 邵光萍 | Water-soluble fertilizer containing a large number of elements, and preparation method thereof |
| CN103708964A (en) * | 2013-12-30 | 2014-04-09 | 成都新柯力化工科技有限公司 | Instant chelated solid water-soluble fertilizer |
| CN104961527A (en) * | 2015-07-01 | 2015-10-07 | 江苏中农肥业有限公司 | Macro-element water-soluble fertilizer and preparation method thereof |
| CN105016910A (en) * | 2015-08-25 | 2015-11-04 | 罗跃东 | Water and fertilizer integrated water-soluble fertilizer and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107892617A (en) * | 2017-11-29 | 2018-04-10 | 佛山科学技术学院 | A kind of composite foliage fertilizer and preparation method thereof |
| CN107827594A (en) * | 2017-11-30 | 2018-03-23 | 贵阳开磷化肥有限公司 | A kind of humic acid Water soluble fertilizer of long-acting stabilization and preparation method thereof |
| CN108034426A (en) * | 2017-12-20 | 2018-05-15 | 袁阔 | A kind of agent for preserving soil moisture and its preparation method and application |
| CN108191580A (en) * | 2018-03-12 | 2018-06-22 | 苏英伟 | A kind of Water soluble fertilizer suitable for water-fertilizer integral |
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