CN102584426A - Organic and inorganic multi-element water-soluble water flush fertilizer for glasshouse culture and preparation method thereof - Google Patents
Organic and inorganic multi-element water-soluble water flush fertilizer for glasshouse culture and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an organic and inorganic multi-element water-soluble water flush fertilizer for glasshouse culture. The fertilizer comprises the components in part by weight: 20 to 40 parts of sodium ligninsulfonate, 10 to 20 parts of urea, 15 to 20 parts of potassium chloride, 30 to 40 parts of ammonium sulphate, 3 to 7 parts of monoammonium phosphate, 1 to 2 parts of magnesium sulfate, 1 to 2 parts of zinc sulfate, 0.5 to 1 part of borax, 1 to 2 parts of calcium nitrate, 0.4 to 1 part of compound chelator and 0.4 to 1 part of acidity regulator, wherein the organic substances account for 15 to 20% of the gross weight, the combination of nitrogen, phosphorus, potassium nutrients account for 70 to 75% of the gross weight, and the secondary and micro elements account for 5 to 10% of the gross weight. In the implementation, at first, sodium ligninsulfonate is dissolved, then is chelated with various secondary and micro-element fertilizer raw materials and is treated through cooling crystallization, and a large amount of secondary and micro-element fertilizer raw materials are added, the smashing and the packing are conducted, and finally the organic and inorganic multi-element water-soluble water flush fertilizer is manufactured. The fertilizer can be rapidly dissolved in the water, is used in coordination with a drop-irrigation and spray-irrigation device, contains comprehensive nutrition and the nutrition proportion suitable for vegetable growth, can achieve the water and fertilizer coupling, and promotes the good quality and high yield of vegetable crops. The invention has the advantages that the composition mixture ratio is reasonable, and the preparation method is simple.
Description
Technical field
The present invention relates to a kind of water-soluble flushing and spreading fertilizer and preparation method, particularly a kind of plain water-soluble flushing and spreading fertilizer of organic-inorganic polyvalent and preparation method who is used for greenhouse production.
Background technology
In recent years, along with China's " two-supremes one is excellent " Agricultural Development, industrialized agriculture protection ground cultivation have obtained developing rapidly, at present in protection ground produces; Booth vegetable is the methods that adopt big flood furrow irrigation flushing and spreading fertilizer in the fertilising of watering more, because existing fertilizer solubility is poor, dissolution rate is slow; Remain in soil surface mostly, perhaps unreasonable towards the mode of executing, perhaps because the high volatility of fertilizer; Not only caused a large amount of wastes of fertilizer and water resources, chemical fertilizer utilization ratio reduces, but also has caused vegetable crop low; Poor quality, soil compaction are prone to problems such as sick.
But flushing and spreading fertilizer is still very commercioganic, because: the first, most of areas is not also promoted the drip irrigation facility fully at present; The second, flushing and spreading fertilizer is simple to operate, saving of work and time; The 3rd, if good dash fertilising, plant absorbing is fast, instant effect; The 4th, the flushing and spreading fertilizer low price is convenient to the recognition and acceptance by the peasant mostly.
Because the liquid flushing and spreading fertilizer is relatively easy aborning, but the liquid fertilizer production cost is high, volume big, transportation is difficult, big area is promoted relatively difficulty.Therefore be badly in need of development solid flushing and spreading fertilizer at present, and require it to have the dissolving of being easy to, nutrient is complete, reasonable ratio, and key element water-soluble fertilizers such as utilization rate of fertilizer height are very important.
Therefore, provide a kind of technology simple, be widely used, environment friendly and pollution-free plain water-soluble flushing and spreading fertilizer of the organic-inorganic polyvalent that is used for greenhouse production and preparation method, be one of these those skilled in the art problem that should address.
Summary of the invention
Difficult problems such as the objective of the invention is to overcome above-mentioned weak point, particularly effectively solve the drip irrigation facility that above-mentioned area exists and block, flushing and spreading fertilizer is poorly soluble, and water resource waste is serious, and utilization rate of fertilizer is low, hypotrophy face, facility problems are outstanding; A kind of reasonable ratio, comprehensive nutrition be provided, instantly separate, the plain water-soluble flushing and spreading fertilizer of the organic-inorganic polyvalent that is used for greenhouse production and the preparation method of CL, obvious effect of increasing production.
Following for realizing the embodiment that above-mentioned purpose the present invention adopted:
A kind of plain water-soluble flushing and spreading fertilizer of organic-inorganic polyvalent that is used for greenhouse production is characterized in that this flushing and spreading fertilizer is to be prepared from following composition, by weight: 20～40 parts of sodium lignosulfonates, 10～20 parts in urea; 15～20 parts in Repone K, 30～40 parts in ammonium sulfate, 3～7 parts of monoammonium phosphates; 1～2 part in sal epsom, 1～2 part in zinc sulfate, 0.5～1 part of borax; 1～2 part in nitrocalcite, 0.4～1 part of compound intercalating agent, 0.4～1 part of acidity regulator.
Said compound intercalating agent is EDTA Disodium and acetate by weight 1: 0.3～0.5 combination.
Said acidity regulator is phosphoric acid and Hydrocerol A by weight 1: 0.5～1 combination.
A kind of preparation method who is used for the plain water-soluble flushing and spreading fertilizer of organic-inorganic polyvalent of greenhouse production, the practical implementation step is following:
(1) chelatropic reaction
Sodium lignosulfonate with said weight part; Add 8-10 times of aqueous solution dissolving; Then composite chelate agent, acidity regulator, zinc sulfate, nitrocalcite, sal epsom, borax are joined in the reaction kettle by weight successively, the limit edged stirs, in the process of adding reaction raw materials; Heat up gradually, until 90 ℃; The capping still is controlled 90 ℃ of steady temperatures then, and the reaction times is 30～50 minutes;
(2) condensing crystal
Huge legendary turtle applies-0.75～-0.85 normal atmosphere 15～20 minutes to reaction kettle after closing the reaction end, removes the moisture of reactant, forms crystalline material;
(3) RM in the reaction kettle is discharged, place in the stirrer, mix urea, ammonium sulfate, Repone K and the monoammonium phosphate of said weight part, thorough mixing is even in stirrer;
(4) pulverize
The compounding substances of step (3) is pulverized in the kibbler of 2mm screen cloth, pack.
The main effect and the synthesis mechanism of the various components of this fertilizer:
Sodium lignosulfonate: be the organic composition in the fertilizer, improve the soil organism; Be that ammonium salt process papermaking wastewater process concentrates, the sub product (this field those of ordinary skill all can obtain by ordinary method) that potential of hydrogen, crystallization etc. form is regulated in sulfonation, is nontoxic product.
Urea: crop nitrogen nutrition is provided.
Repone K: the crop potassium nutrition is provided.
Ammonium sulfate: crop nitrogen and sulphur nutrition are provided.
Monoammonium phosphate: provide crop nitrogen and phosphorus plain nutrition.
Sal epsom: the crop magnesium nutrition is provided, and magnesium is the essential middle amount nutritive element of crop.
Zinc sulfate: the crop zinc nutrition is provided, and zinc is the essential micronutrient element of crop.
Borax: the crop boron nutrition is provided, and boron is the essential micronutrient element of crop.
Nitrocalcite: provide crop nitrogen and calcium plain nutrition, nitrogen is macroelement, and calcium is moderate-element.
Compound intercalating agent: chelated microelement, avoid precipitating.
Acidity regulator: regulate fertilizer pH, make it between 6～7.5.
The invention has the beneficial effects as follows: the present invention is a kind of sub product of paper and plain water-soluble fertilizer of organic-inorganic polyvalent that agricultural fertilizer generates through steps such as chelating, crystallization, blending of utilizing.This fertilizer is used for vegetables in day-light greenhouse, can economize on water 10～20%, and joint fertilizer 15～20% improves output about 20%; Effectively improve water and fertilizer coupling and liquid manure utilising efficiency, guarantee that crop continues high yield, reduce labor intensity, significantly enhance productivity, keep and improve the ecological environment.Prescription reasonable ratio of the present invention, obvious application effect; This fertilizer cost is low, and proterties is stable, and is easy and simple to handle, and is convenient to apply on a large scale.
Embodiment
Below in conjunction with preferred embodiment, to details are as follows according to embodiment provided by the invention:
Embodiment 1: (every part 1kg meter) by weight
A kind of plain water-soluble flushing and spreading fertilizer of organic-inorganic polyvalent that is used for greenhouse production is to be prepared from following composition, by weight: 20～40 parts of sodium lignosulfonates, 10～20 parts in urea; 15～20 parts in Repone K, 30～40 parts in ammonium sulfate, 3～7 parts of monoammonium phosphates; 1～2 part in sal epsom, 1～2 part in zinc sulfate, 0.5～1 part of borax; 1～2 part in nitrocalcite, 0.4～1 part of compound intercalating agent, 0.4～1 part of acidity regulator.Wherein organic type of material accounts for 15～20% of gross weight, and nitrogen, phosphorus, potassium nutrition combination account for 70～75% of gross weight, and middle trace element accounts for 5～10% of gross weight.
Said compound intercalating agent is EDTA Disodium and acetate by weight 1: 0.3～0.5 combination.
Said acidity regulator is phosphoric acid and Hydrocerol A by weight 1: 0.5～1 combination.
Said sodium lignosulfonate is the sub product that imines method papermaking wood pulp forms through concentrated, sulfonation, the drying of dusting; Wherein the lignosulfonic acid sodium content is 85%, and water cut is less than 5%, and reduzate content is less than 8%, and pH value of water solution is 6.5～8.5, and water insoluble matter content is less than 0.5%.
This fertilizer can be dissolved in water rapidly, cooperates drip irrigation and rainer to use, and contains the nutritive props of full nutrition and suitable vegetable growth, can realize water and fertilizer coupling and vegetable crop good quality and high output.
The practical implementation step of this flushing and spreading fertilizer preparation is following:
(1) chelatropic reaction
Sodium lignosulfonate with said weight part; Add 8-12 times of aqueous solution dissolving; Then composite chelate agent, acidity regulator, zinc sulfate, nitrocalcite, sal epsom, borax are joined in the reaction kettle by weight successively, the limit edged stirs, in the process of adding reaction raw materials; Heat up gradually, until 90 ℃; The capping still is controlled 90 ℃ of steady temperatures then, and the reaction times is 30～50 minutes;
(2) condensing crystal
Huge legendary turtle applies-0.75～-0.85 normal atmosphere 15～20 minutes to reaction kettle after closing the reaction end, removes the moisture of reactant, forms crystalline material;
(3) RM in the reaction kettle is discharged, place in the stirrer, mix urea, ammonium sulfate, Repone K and the monoammonium phosphate of said weight part, thorough mixing is even in stirrer;
(4) pulverize
The compounding substances of step (3) is pulverized in the kibbler of 2mm screen cloth, pack.
Embodiment 2:
30 parts of sodium lignosulfonates are added 300 parts in water, add 0.3 part of EDTA (EDTA Disodium) then, 0.1 part of acetate, 0.4 part of phosphoric acid; 0.2 part of Hydrocerol A, 1 part in zinc sulfate, 1 part in nitrocalcite, 1 part in sal epsom; Borax joins in the reaction kettle for 1 part by weight successively, and the limit edged stirs, and temperature is 90 ℃, condensing crystal after 50 minutes; Add 12 parts of urea then, 39 parts of ammonium sulfate, 20 parts of Repone K, 7 parts of monoammonium phosphates.
The practical implementation step of this flushing and spreading fertilizer preparation is following:
(1) chelatropic reaction
Sodium lignosulfonate with said weight part; Add 8-12 times of aqueous solution dissolving; Then composite chelate agent, acidity regulator, zinc sulfate, nitrocalcite, sal epsom, borax are joined in the reaction kettle by weight successively, the limit edged stirs, in the process of adding reaction raw materials; Heat up gradually, until 90 ℃; The capping still is controlled 90 ℃ of steady temperatures then, and the reaction times is 30～50 minutes;
(2) condensing crystal
Huge legendary turtle applies-0.75～-0.85 normal atmosphere 15～20 minutes to reaction kettle after closing the reaction end, removes the moisture of reactant, forms crystalline material;
(3) RM in the reaction kettle is discharged, place in the stirrer, mix urea, ammonium sulfate, Repone K and the monoammonium phosphate of said weight part, thorough mixing is even in stirrer;
(4) pulverize
The compounding substances of step (3) is pulverized in the kibbler of 2mm screen cloth, pack.
Other is with embodiment 1.
Embodiment 3:
30 parts of sodium lignosulfonates are added 300 parts in water, add 0.3 part of EDTA (EDTA Disodium) then, 0.1 part of acetate, 0.4 part of phosphoric acid; 0.2 part of Hydrocerol A, 1 part in zinc sulfate, 1 part in nitrocalcite, 1 part in sal epsom; Borax joins in the reaction kettle for 1 part by weight successively, and the limit edged stirs, and temperature is 90 ℃, condensing crystal after 50 minutes; Add 20 parts of urea then, 40 parts of ammonium sulfate, 17 parts of Repone K, 3 parts of monoammonium phosphates; Mixing is pulverized, pack.
Other is with embodiment 1,2.
Embodiment 4:
30 parts of sodium lignosulfonates are added 300 parts in water, add 0.4 part of EDTA (EDTA Disodium) then, 0.2 part of acetate, 0.2 part of phosphoric acid; 0.2 part of Hydrocerol A, 1 part in zinc sulfate, 1 part in nitrocalcite, 1 part in sal epsom; Borax joins in the reaction kettle for 1 part by weight successively, and the limit edged stirs, and temperature is 90 ℃, condensing crystal after 50 minutes; Add 12 parts of urea then, 38 parts of ammonium sulfate, 19 parts of Repone K, 7 parts of monoammonium phosphates; Mixing is pulverized, pack.
Other is with embodiment 1,2.
Embodiment 5:
30 parts of sodium lignosulfonates are added 300 parts in water, add 0.4 part of EDTA then, 0.2 part of acetate, 0.2 part of phosphoric acid; 0.2 part of Hydrocerol A, 1 part in zinc sulfate, 1 part in nitrocalcite, 1 part in sal epsom; Borax joins in the reaction kettle for 1 part by weight successively, and the limit edged stirs, and temperature is 90 ℃, condensing crystal after 50 minutes; Add 20 parts of urea then, 40 parts of ammonium sulfate, 17 parts of Repone K, 3 parts of monoammonium phosphates; Mixing is pulverized, pack.
Other is with embodiment 1,2.
Embodiment 6:
40 parts of sodium lignosulfonates are added 300 parts in water, add 0.4 part of EDTA (EDTA Disodium) then, 0.2 part of acetate, 0.2 part of phosphoric acid; 0.2 part of Hydrocerol A, 1.5 parts in zinc sulfate, 1 part in nitrocalcite, 1 part in sal epsom; Borax joins in the reaction kettle for 0.5 part by weight successively, and the limit edged stirs, and temperature is 90 ℃, condensing crystal after 50 minutes; Add 12 parts of urea then, 30 parts of ammonium sulfate, 20 parts of Repone K, 7 parts of monoammonium phosphates; Mixing is pulverized, pack.
Other is with embodiment 1,2.
Embodiment 7:
35 parts of sodium lignosulfonates are added 300 parts in water, add 0.5 part of EDTA then, 0.2 part of acetate, 0.4 part of phosphoric acid; 0.4 part of Hydrocerol A, 1.5 parts in zinc sulfate, 1 part in nitrocalcite, 1.5 parts in sal epsom; Borax joins in the reaction kettle for 1 part by weight successively, and the limit edged stirs, and temperature is 90 ℃, condensing crystal after 50 minutes; Add 16 parts of urea then, 35 parts of ammonium sulfate, 17 parts of Repone K, 3.5 parts of monoammonium phosphates; Mixing is pulverized, pack.
Other is with embodiment 1,2.
Embodiment 8:
40 parts of sodium lignosulfonates are added 480 parts in water, add 0.7 part of EDTA then, 0.3 part of acetate, 0.6 part of phosphoric acid; 0.4 part of Hydrocerol A, 2 parts in zinc sulfate, 2 parts in nitrocalcite, 2 parts in sal epsom; Borax joins in the reaction kettle for 1 part by weight successively, and the limit edged stirs, and temperature is 90 ℃, condensing crystal after 50 minutes; Add 20 parts of urea then, 40 parts of ammonium sulfate, 17 parts of Repone K, 3 parts of monoammonium phosphates; Mixing is pulverized, pack.
Other is with embodiment 1,2.
Application example 1:
The plain water-soluble flushing and spreading fertilizer of organic-inorganic polyvalent of the present invention is to the influence of tomato yield and quality
This fertilizer has carried out the tomato test in vegetables base, the blue or green town of Tianjin Xiqing District willow, adopt the plain flushing and spreading fertilizer of organic-inorganic polyvalent and peasant's conventional fertilizer application of equal consumption to carry out tomato yield and quality simultaneous test; Handle 1 be peasant's conventional fertilizer application as control group, peasant's conventional fertilizer application is a N22.4kg/ mu, P
2O
56.4kg/ mu, K
2O 19.2kg/ mu.Handle 2 for using the plain flushing and spreading fertilizer of organic-inorganic polyvalent of the present invention, nutrient content is same, and its test-results is seen table 1.
Table 1 liquid fertilizer material of the present invention is to the influence of tomato yield, quality and utilization rate of fertilizer
Application example 2:
The plain water-soluble flushing and spreading fertilizer of organic-inorganic polyvalent of the present invention is to the influence of cauliflower yield and quality
This fertilizer has carried out the tomato test in vegetables base, the blue or green town of Tianjin willow, adopt the plain flushing and spreading fertilizer of organic-inorganic polyvalent and peasant's conventional fertilizer application of equal consumption to carry out tomato yield and quality simultaneous test; Handle 1 be peasant's conventional fertilizer application as control group, peasant's conventional fertilizer application is a N28.8kg/ mu, P
2O
53.2kg/ mu, K
2O 16.0kg/ mu; Handle 2 for using the plain water-soluble flushing and spreading fertilizer of organic-inorganic polyvalent of the present invention, nutrient content is same, and its test-results is seen table 2.
Table 2 liquid fertilizer material of the present invention is to the influence of cauliflower output and utilization rate of fertilizer
Above-mentioned detailed description of the plain water-soluble flushing and spreading fertilizer of the organic-inorganic polyvalent that is used for greenhouse production and preparation method being carried out with reference to embodiment; Be illustrative rather than determinate; Can enumerate several embodiment according to set of dispense than qualification scope; Therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.
Claims (4)
1. the plain water-soluble flushing and spreading fertilizer of organic-inorganic polyvalent that is used for greenhouse production is characterized in that this flushing and spreading fertilizer is to be prepared from following composition, by weight: 20 ~ 40 parts of sodium lignosulfonates, 10 ~ 20 parts in urea; 15 ~ 20 parts in Repone K, 30 ~ 40 parts in ammonium sulfate, 3 ~ 7 parts of monoammonium phosphates; 1 ~ 2 part in sal epsom, 1 ~ 2 part in zinc sulfate, 0.5 ~ 1 part of borax; 1 ~ 2 part in nitrocalcite, 0.4 ~ 1 part of compound intercalating agent, 0.4 ~ 1 part of acidity regulator.
2. the plain water-soluble flushing and spreading fertilizer of the organic-inorganic polyvalent that is used for greenhouse production as claimed in claim 1 is characterized in that said compound intercalating agent is the combination by weight 1:0.3 ~ 0.5 of EDTA Disodium and acetate.
3. the plain water-soluble flushing and spreading fertilizer of the organic-inorganic polyvalent that is used for greenhouse production as claimed in claim 1 is characterized in that said acidity regulator is the combination by weight 1:0.5 ~ 1 of phosphoric acid and Hydrocerol A.
4. the preparation method of the plain water-soluble flushing and spreading fertilizer of the organic-inorganic polyvalent that is used for greenhouse production as claimed in claim 1, the practical implementation step is following:
(1) chelatropic reaction
Sodium lignosulfonate with said weight part; Add 8-12 times of aqueous solution dissolving; Then composite chelate agent, acidity regulator, zinc sulfate, nitrocalcite, sal epsom, borax are joined in the reaction kettle by weight successively, the limit edged stirs, in the process of adding reaction raw materials; Heat up gradually, until 90 ℃; The capping still is controlled 90 ℃ of steady temperatures then, and the reaction times is 30 ~ 50 minutes;
(2) condensing crystal
Huge legendary turtle applies-0.75 ~-0.85 normal atmosphere 15 ~ 20 minutes to reaction kettle after closing the reaction end, removes the moisture of reactant, forms crystalline material;
(3) RM in the reaction kettle is discharged, place in the stirrer, mix urea, ammonium sulfate, Repone K and the monoammonium phosphate of said weight part, thorough mixing is even in stirrer;
(4) pulverize
The compounding substances of step (3) is pulverized in the kibbler of 2mm screen cloth, pack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100174413A CN102584426A (en) | 2012-01-19 | 2012-01-19 | Organic and inorganic multi-element water-soluble water flush fertilizer for glasshouse culture and preparation method thereof |
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| CN2012100174413A CN102584426A (en) | 2012-01-19 | 2012-01-19 | Organic and inorganic multi-element water-soluble water flush fertilizer for glasshouse culture and preparation method thereof |
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| CN102924182A (en) * | 2012-11-19 | 2013-02-13 | 山东省农业科学院农业资源与环境研究所 | Environment-friendly soil-improving liquid fertilizer and preparing method thereof |
| CN103601578A (en) * | 2013-11-15 | 2014-02-26 | 烟台富迪康生物科技有限公司 | Water-retaining soil-loosening fertilizer |
| CN103771965A (en) * | 2013-09-28 | 2014-05-07 | 西南大学柑桔研究所 | Special fertilizer for navel oranges at red soil regions and precise-variable fertilizing method |
| CN103964929A (en) * | 2014-05-22 | 2014-08-06 | 天津市农业资源与环境研究所 | Special-purpose trickle irrigation fertilizer formula for seed-production cucumbers and application method thereof |
| CN105272601A (en) * | 2015-10-22 | 2016-01-27 | 湖北祥云(集团)化工股份有限公司 | Secondary element containing water soluble fertilizer for promoting fruit expansion and preparation method of water soluble fertilizer |
| CN105481581A (en) * | 2015-12-31 | 2016-04-13 | 王丰登 | Water soluble calcium multi-element fertilizer composition |
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| RU2660929C2 (en) * | 2016-05-04 | 2018-07-11 | Николай Николаевич Рыжков | Organic component of the nutrient mixture for plants |
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| CN102924182B (en) * | 2012-11-19 | 2014-04-30 | 山东省农业科学院农业资源与环境研究所 | Environment-friendly soil-improving liquid fertilizer and preparing method thereof |
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| CN103771965B (en) * | 2013-09-28 | 2015-12-23 | 西南大学柑桔研究所 | A kind of special fertilizer of khoai navel orange and accurate variable fertilization method thereof |
| CN103771965A (en) * | 2013-09-28 | 2014-05-07 | 西南大学柑桔研究所 | Special fertilizer for navel oranges at red soil regions and precise-variable fertilizing method |
| CN103601578B (en) * | 2013-11-15 | 2015-12-02 | 烟台富迪康生物科技有限公司 | A kind of water conservation loosens the soil fertilizer |
| CN103601578A (en) * | 2013-11-15 | 2014-02-26 | 烟台富迪康生物科技有限公司 | Water-retaining soil-loosening fertilizer |
| CN103964929A (en) * | 2014-05-22 | 2014-08-06 | 天津市农业资源与环境研究所 | Special-purpose trickle irrigation fertilizer formula for seed-production cucumbers and application method thereof |
| CN105272601A (en) * | 2015-10-22 | 2016-01-27 | 湖北祥云(集团)化工股份有限公司 | Secondary element containing water soluble fertilizer for promoting fruit expansion and preparation method of water soluble fertilizer |
| CN105272601B (en) * | 2015-10-22 | 2018-12-25 | 湖北祥云(集团)化工股份有限公司 | A kind of water soluble fertilizer and preparation method thereof promoting Fruit containing moderate-element |
| CN105481581A (en) * | 2015-12-31 | 2016-04-13 | 王丰登 | Water soluble calcium multi-element fertilizer composition |
| RU2660929C2 (en) * | 2016-05-04 | 2018-07-11 | Николай Николаевич Рыжков | Organic component of the nutrient mixture for plants |
| CN106748430A (en) * | 2016-12-06 | 2017-05-31 | 北京天极视讯科技发展有限公司 | A kind of humic acid Water soluble fertilizer and preparation method thereof |
| CN109265219A (en) * | 2018-11-13 | 2019-01-25 | 广东新维生物科技股份有限公司 | A kind of lignin fertilizer and preparation method of chelated microelement |
| CN113321545A (en) * | 2021-06-10 | 2021-08-31 | 山东农业大学 | Special water-soluble fertilizer for chemically synthesized corn and preparation method thereof |
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Application publication date: 20120718 |