CN112174732A - Multifunctional nutrient fluid additive and preparation method thereof - Google Patents
Multifunctional nutrient fluid additive and preparation method thereof Download PDFInfo
- Publication number
- CN112174732A CN112174732A CN202011041435.2A CN202011041435A CN112174732A CN 112174732 A CN112174732 A CN 112174732A CN 202011041435 A CN202011041435 A CN 202011041435A CN 112174732 A CN112174732 A CN 112174732A
- Authority
- CN
- China
- Prior art keywords
- medium
- nutrient
- trace element
- solvent
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C11/00—Other nitrogenous fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/20—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for preventing the fertilisers being reduced to powder; Anti-dusting additives
-
- 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
- C05G3/30—Anti-agglomerating additives; Anti-solidifying additives
-
- 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
- C05G5/20—Liquid fertilisers
-
- 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
- C05G5/20—Liquid fertilisers
- C05G5/27—Dispersions, e.g. suspensions or emulsions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Dispersion Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a multifunctional nutrient fluid additive and a preparation method thereof, wherein the multifunctional nutrient fluid additive consists of 10-89.9% of medium and trace element-containing nutrient substances, 10-30.3% of a solvent and 0.01-60% of organic matters, wherein the medium and trace element-containing nutrient substances are solvent-free fluid substances containing medium and trace elements, and the organic matters are one or a mixture of more than two of amino acids, humic acids and biological stimulin. The preparation method comprises the following steps: firstly, the treating agent is used for carrying out surface treatment on the micro-particles containing the medium and trace element nutrient substances, and then the solvent and the organic matter are sequentially added to prepare the multifunctional nutrient fluid additive. The fluid additive has high and complete nutrient content, meets the requirements of crops on required medium trace elements and organic matters, and has the effects of increasing the crop yield and improving the crop quality; can improve the utilization rate of the fertilizer, ensure the healthy growth of crops, simultaneously insist on exerting the fertilizer efficiency of the soil to the maximum and reduce the damage to the soil.
Description
Technical Field
The invention relates to a multifunctional nutrient fluid additive and a preparation method thereof, and is particularly applied to the field of fertilizers.
Background
The physical mixing of powdered or granular micronutrients with solid fertilisers provides more flexibility in manufacturing but has some drawbacks in the final product. These differences in particle size and density of the different component particles can lead to uneven differentiation during storage and handling, resulting in uneven application to the soil and crops. Another disadvantage, in particular the powdery trace elements, is that they require a dust removal treatment during transport and use. This not only results in uneven usage, but also presents potential environmental or health and safety hazards.
It is also often desirable to satisfy crop trace element fertilizer products in solid particulate form. This can be achieved by mixing the trace elements during the beading or granulating process. Patent WO9915480 discloses how trace elements can be coated outside of particulate fertilizers by the application of an acid and a mineral-based aqueous solution, which is problematic in that the coated particulate fertilizers are prone to moisture absorption and caking after long-term storage, and the caking of fertilizer granules is aggravated by the reaction of inorganic acids such as phosphoric acid, sulfuric acid and nitric acid with improper use of the inorganic acids. Patent CN105050982A application discloses a fertilizer coating containing trace elements, which comprises applying a unidirectional fluid to particulate solid fertilizer raw materials at room temperature without chemical reaction or chelating action, wherein the unidirectional fluid comprises a suspension of one or more trace element raw materials in oil, but the problem of dispersant selection is that the system has high viscosity and bottom deposition when stored for a long time or at high temperature, and the system has low trace element content and needs more coating amount for coating fertilizers with high trace element content. Patent WO03071855 discloses a method for applying a fertilizer to be wrapped in trace elements in the form of fine dry powder, which claims the production of a low-dust product. Patent US3692529 discloses the treatment of solid carried particles with adhering oils and pigments or colorants, which is problematic in that if the granular solid used is prone to generate dust, further treatment steps are required to suppress the dust, the process is cumbersome and the production cost is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a multifunctional nutritional fluid additive and a preparation method thereof. The production process is simple, and the prepared multifunctional nutrient fluid additive has complete nutrient contents of various nutrient components, meets the requirements of crops on required medium trace elements and organic matters, can quickly promote the growth of the crops, and has the effects of increasing the yield of the crops and improving the quality of the crops; can improve the utilization rate of the fertilizer, ensure the healthy growth of crops, simultaneously insist on exerting the fertilizer efficiency of the soil to the maximum and reduce the damage to the soil. The multifunctional nutrient fluid additive does not have the phenomenon of layering in the long-term storage process.
The technical scheme of the invention is as follows:
the multifunctional nutrient fluid additive is characterized by comprising the following components in percentage by weight: the nutrient solution consists of 10 to 89.9 percent of medium and trace element-containing nutrient substances, 10 to 30.3 percent of solvent and 0.01 to 60 percent of organic matter, wherein the medium and trace element-containing nutrient substances are solvent-free fluid substances containing medium and trace elements, and the organic matter is one or a mixture of more than two of amino acids, humic acids and biostimulant.
The humic acid is a mixture of fulvic acid, fulvic acid and fulvic acid, and the mass content ratio of fulvic acid is as follows: brown humic acid: 50-90 parts of humic acid: 10-40:1-10.
The molecular weight range of the fulvic acid is 1-3 ten thousand.
The molecular weight range of the fulvic acid is 5-50 ten thousand.
The molecular weight range of the humic acid is 50-200 ten thousand.
The medium trace element-containing nutrient substance is a simple substance containing calcium, magnesium, sulfur, zinc, boron, manganese, copper, iron and molybdenum or a mixture containing one or more than two of calcium, magnesium, sulfur, zinc, boron, manganese, copper, iron and molybdenum compounds.
The preparation method of the multifunctional nutritional fluid additive is characterized by comprising the following steps of:
firstly, surface treatment is carried out on medium and trace element nutrient substance-containing micro-particles by adopting a treating agent to prepare a solvent-free medium and trace element nutrient substance-containing micro-particle fluid;
adding the solvent-free medium and trace element nutrient substance micro-particle fluid prepared in the step I into a solvent for dispersion to prepare a medium and trace element nutrient substance dispersion system;
and thirdly, adding organic matters into the medium and trace element-containing nutrient substance dispersion system obtained in the second step, and uniformly dispersing to obtain the multifunctional nutrient fluid additive.
The size range of the micro-particle fluid containing medium and trace element nutrient substances in the solvent-free medium is 50-200 mu m.
The treating agent adopted in the step I is one or a mixture of more than two of octadecyl mercaptan, octadecyl amine and potassium nonylphenol polyoxyethylene ether sulfonate.
The mass ratio of the treating agent to the medium and trace element-containing nutrient substances in the step (i) is as follows: 0.1-20% of medium trace element nutrient simple substance: 100, respectively; treating agent: medium and trace element nutrient compound 0.05-30: 100.
due to the adoption of the technical scheme, the multifunctional nutrient fluid additive prepared by the invention has the following advantages:
1. according to the invention, the surface of the fertilizer granules is coated by adopting a fluid emulsion coating mode, compared with the combination of particle elements in the granulation or balling process, the production flexibility is better, the addition of trace elements is accurately controlled, the fertilizer can be widely applied to coating rollers, discs, fertilizer mixing machines, mixers and the like, and a manufacturer does not need to add new equipment in the using process;
2. the medium and trace element-containing nutrient substance particles are prepared into solvent-free fluid, so that the dispersing performance of the fluid can be effectively improved. Humic acid, amino acid and/or biological stimulin are added into a medium and trace element-containing nutrient substance/organic matter composite system, the multifunctional nutrient fluid additive is uniformly dispersed, and can be prepared by simple mechanical stirring. Therefore, the preparation process flow is shortened, the preparation method of the multifunctional nutrient fluid additive obtained by the invention has short flow, is simple and convenient and is easy to operate, and simultaneously, the energy consumption and the production cost are reduced;
3. the multifunctional nutrient fluid additive prepared by the invention has the advantages that various nutrient substances are uniformly dispersed, the addition amounts of trace elements and organic matters can be accurately controlled during coating, the surface of each fertilizer can be better covered, and layering and dust generated in the process of mixing compared with dry materials are eliminated;
4. compared with a water-based system, the multifunctional nutrient fluid additive reduces the hardening tendency of a final product solid fertilizer, coats the surfaces of fertilizer particles, can well play a role in preventing and preventing dust, and can replace the traditional fertilizer additive;
5. the multifunctional nutrient fluid additive prepared by the invention has good fluidity at 20 ℃, so that the multifunctional nutrient fluid additive does not need to be heated when the surface of the granulated fertilizer is coated, has more advantages compared with some high-boiling-point nutrient coating additives, and simultaneously greatly reduces the production cost;
Detailed Description
The present invention will be described in further detail with reference to specific examples. The raw materials of the embodiments of the invention are all purchased directly.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Example 1
Carrying out surface treatment on 100g of borocalcite microparticles by using 10g of octadecyl mercaptan to prepare a solvent-free borocalcite microparticle fluid, wherein the size of the microparticle fluid is 50 mu m;
secondly, adding the solvent-free borocalcite microparticle fluid prepared in the step I into 40g of peanut oil solvent for dispersing to prepare a solvent-free borocalcite microparticle fluid dispersion system;
thirdly, adding 6g of fulvic acid, 3g of fulvic acid, 1g of fulvic acid, 4.99g of amino acid and 0.01g of chitosan oligosaccharide into the solvent-free borocalcite microparticle fluid dispersion system obtained in the second step, and uniformly dispersing by adopting mechanical stirring to prepare the multifunctional nutrient fluid additive.
The multifunctional nutrient fluid additive is prepared, and has no precipitate and less than 5% oil precipitation after being placed for 30 days at the temperature of 55 ℃.
Example 2
Carrying out surface treatment on 100g of borocalcite microparticles by using 20g of octadecyl mercaptan to prepare a solvent-free borocalcite microparticle fluid, wherein the size of the microparticle fluid is 100 micrometers;
secondly, adding the solvent-free borocalcite microparticle fluid prepared in the step I into 40g of peanut oil solvent for dispersing to prepare a solvent-free borocalcite microparticle fluid dispersion system;
thirdly, adding 6g of fulvic acid, 3g of fulvic acid, 1g of fulvic acid, 4.99g of amino acid and 0.01g of chitosan oligosaccharide into the solvent-free borocalcite microparticle fluid dispersion system obtained in the second step, and uniformly dispersing by adopting mechanical stirring to prepare the multifunctional nutrient fluid additive.
The multifunctional nutrient fluid additive is prepared, and has no precipitate after being placed for 40 days at the temperature of 55 ℃, and the oil precipitation is less than 5 percent.
Example 3
Carrying out surface treatment on 100g of borocalcite microparticles by using 30g of octadecyl mercaptan to prepare a solvent-free borocalcite microparticle fluid, wherein the size of the microparticle fluid is 200 mu m;
secondly, adding the solvent-free borocalcite microparticle fluid prepared in the step I into 40g of peanut oil solvent for dispersing to prepare a solvent-free borocalcite microparticle fluid dispersion system;
thirdly, adding 6g of fulvic acid, 3g of fulvic acid, 1g of fulvic acid, 4.99g of amino acid and 0.01g of chitosan oligosaccharide into the dispersion system of the solvent-free borocalcite microparticle fluid dispersion system obtained in the second step, and uniformly dispersing by adopting mechanical stirring to prepare the multifunctional nutrient fluid additive.
The multifunctional nutrient fluid additive is prepared, and has no precipitate after being placed for 40 days at the temperature of 55 ℃, and the oil precipitation is less than 5 percent.
Example 4
Carrying out surface treatment on 100g of borocalcite microparticles by using 20g of octadecyl mercaptan to prepare a solvent-free borocalcite microparticle fluid, wherein the size of the microparticle fluid is 200 mu m;
adding the solvent-free borocalcite microparticle fluid prepared in the step one into 50g of peanut oil solvent for dispersing to prepare a solvent-free borocalcite microparticle fluid dispersion system;
thirdly, adding 6g of fulvic acid, 3g of fulvic acid, 1g of fulvic acid, 4.99g of amino acid and 0.01g of chitosan oligosaccharide into the dispersion system of the solvent-free borocalcite microparticle fluid dispersion system obtained in the second step, and uniformly dispersing by adopting mechanical stirring to prepare the multifunctional nutrient fluid additive.
The multifunctional nutrient fluid additive is prepared, and has no precipitate and less than 2% oil precipitation after being placed for 45 days at the temperature of 55 ℃.
Example 5
Carrying out surface treatment on 100g of elemental sulfur microparticles by using 10g of octadecylamine to prepare a solvent-free sulfur microparticle fluid, wherein the size of the microparticle fluid is 150 microns;
secondly, adding the solvent-free sulfur microparticle fluid prepared in the first step into 300g of soybean oil solvent for dispersion to prepare a solvent-free sulfur microparticle fluid dispersion system;
thirdly, adding 50g of fulvic acid, 30g of fulvic acid, 10g of fulvic acid, 500g of amino acid and 10g of chitosan oligosaccharide into the solvent-free sulfur microparticle fluid dispersion system obtained in the second step, and mechanically stirring and uniformly dispersing to obtain the multifunctional nutritional fluid additive.
The multifunctional nutrient fluid additive is prepared, and has no precipitate after being placed for 30 days at the temperature of 55 ℃, and the oil precipitation is less than 3 percent.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The multifunctional nutrient fluid additive is characterized by comprising the following components in percentage by weight: the nutrient solution consists of 10 to 89.9 percent of medium and trace element-containing nutrient substances, 10 to 30.3 percent of solvent and 0.01 to 60 percent of organic matter, wherein the medium and trace element-containing nutrient substances are solvent-free fluid substances containing medium and trace elements, and the organic matter is one or a mixture of more than two of amino acids, humic acids and biostimulant.
2. The multi-functional nutritional fluid aid of claim 1, wherein: the humic acid is a mixture of fulvic acid, fulvic acid and fulvic acid, and the mass content ratio of fulvic acid is as follows: brown humic acid: 50-90 parts of humic acid: 10-40:1-10.
3. The multi-functional nutritional fluid aid of claim 2, wherein: the molecular weight range of the fulvic acid is 1-3 ten thousand.
4. The multi-functional nutritional fluid aid of claim 2, wherein: the molecular weight range of the fulvic acid is 5-50 ten thousand.
5. The multi-functional nutritional fluid aid of claim 2, wherein: the molecular weight range of the humic acid is 50-200 ten thousand.
6. The multi-functional nutritional fluid aid of claim 1, wherein: the medium trace element-containing nutrient substance is a simple substance containing calcium, magnesium, sulfur, zinc, boron, manganese, copper, iron and molybdenum or a mixture containing one or more than two of calcium, magnesium, sulfur, zinc, boron, manganese, copper, iron and molybdenum compounds.
7. A process for the preparation of a multi-functional nutritional fluid aid according to any one of claims 1 to 6, comprising the steps of:
firstly, surface treatment is carried out on medium and trace element nutrient substance-containing micro-particles by adopting a treating agent to prepare a solvent-free medium and trace element nutrient substance-containing micro-particle fluid;
adding the solvent-free medium and trace element nutrient substance micro-particle fluid prepared in the step I into a solvent for dispersion to prepare a medium and trace element nutrient substance dispersion system;
and thirdly, adding organic matters into the medium and trace element-containing nutrient substance dispersion system obtained in the second step, and uniformly dispersing to obtain the multifunctional nutrient fluid additive.
8. The method of claim 7, wherein the multifunctional nutritional fluid aid comprises: the size range of the micro-particle fluid containing medium and trace element nutrient substances in the solvent-free medium is 50-200 mu m.
9. The method of claim 7, wherein the multifunctional nutritional fluid aid comprises: the treating agent adopted in the step I is one or a mixture of more than two of octadecyl mercaptan, octadecyl amine and potassium nonylphenol polyoxyethylene ether sulfonate.
10. The method of claim 7, wherein the multifunctional nutritional fluid aid comprises: the mass ratio of the treating agent to the medium and trace element-containing nutrient substances in the step (i) is as follows: 0.1-20% of medium trace element nutrient simple substance: 100, respectively; treating agent: medium and trace element nutrient compound 0.05-30: 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041435.2A CN112174732A (en) | 2020-09-28 | 2020-09-28 | Multifunctional nutrient fluid additive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041435.2A CN112174732A (en) | 2020-09-28 | 2020-09-28 | Multifunctional nutrient fluid additive and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112174732A true CN112174732A (en) | 2021-01-05 |
Family
ID=73943875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011041435.2A Pending CN112174732A (en) | 2020-09-28 | 2020-09-28 | Multifunctional nutrient fluid additive and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112174732A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499233A (en) * | 1983-05-03 | 1985-02-12 | Nl Industries, Inc. | Water dispersible, modified polyurethane and a thickened aqueous composition containing it |
| AU9822698A (en) * | 1997-12-24 | 1999-07-15 | Dante C. Dizon | Biostimulant type of fertiliser for various crops and method of use thereof |
| US20150376076A1 (en) * | 2013-02-20 | 2015-12-31 | Yara Uk Limited | Fertiliser coating containing micronutrients |
| CN109438086A (en) * | 2018-12-27 | 2019-03-08 | 湖北富邦科技股份有限公司 | A kind of oil body plant nutrient auxiliary agent and preparation method and purposes |
| CN109665907A (en) * | 2018-12-27 | 2019-04-23 | 湖北富邦科技股份有限公司 | A kind of aqueous plant nutrient auxiliary agent and preparation method and purposes |
| CN111315712A (en) * | 2017-11-06 | 2020-06-19 | 罗地亚经营管理公司 | Fertilizer composition |
-
2020
- 2020-09-28 CN CN202011041435.2A patent/CN112174732A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499233A (en) * | 1983-05-03 | 1985-02-12 | Nl Industries, Inc. | Water dispersible, modified polyurethane and a thickened aqueous composition containing it |
| AU9822698A (en) * | 1997-12-24 | 1999-07-15 | Dante C. Dizon | Biostimulant type of fertiliser for various crops and method of use thereof |
| US20150376076A1 (en) * | 2013-02-20 | 2015-12-31 | Yara Uk Limited | Fertiliser coating containing micronutrients |
| CN111315712A (en) * | 2017-11-06 | 2020-06-19 | 罗地亚经营管理公司 | Fertilizer composition |
| CN109438086A (en) * | 2018-12-27 | 2019-03-08 | 湖北富邦科技股份有限公司 | A kind of oil body plant nutrient auxiliary agent and preparation method and purposes |
| CN109665907A (en) * | 2018-12-27 | 2019-04-23 | 湖北富邦科技股份有限公司 | A kind of aqueous plant nutrient auxiliary agent and preparation method and purposes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2018256607B2 (en) | Fertiliser Coating Containing Micronutrients | |
| AU2019232821B2 (en) | Multi-purpose lignin-carbohydrate binding system | |
| CN100575312C (en) | Handle the method for fire-fighting medium powder wastes and the fertilizer that from these class methods, obtains | |
| US9409827B2 (en) | Fertilizer composition containing sulfur and boron | |
| CN110198779A (en) | Polyhalite method of granulating | |
| CN101570455B (en) | Method for preparing particle ammonium sulfate product by organic-inorganic binder | |
| WO2020034372A1 (en) | Medium trace element mixture and preparation method of medium trace element-wrapped fertilizer | |
| CN105367235A (en) | Fertilizer composition containing micronutrients and methods of making same | |
| EP3114097B1 (en) | Method for incorporating micronutrients in the outer shell of urea-based particles | |
| CN101037365A (en) | Production technique of carbamide microelement fertilizer | |
| US20160304410A1 (en) | Coatings and additives containing fatty acids, salts of fatty acids, or similar compounds, for use as de-dust and/or anti-caking agents for granular products | |
| CN103880558A (en) | Salt-resistant soil-improving slow release fertilizer and preparation method thereof | |
| WO2021103940A1 (en) | Superabsorbent medium trace element mixture and application thereof | |
| WO2021103942A1 (en) | Secondary and trace element mixture and application thereof | |
| WO2021103941A1 (en) | Environmental-friendly medium trace element mixing agent and application | |
| CN104418637A (en) | Colorful slowly-releasing compound fertilizer and preparation method thereof | |
| CN104447010B (en) | Humic acid type functional blended fertilizer and preparation method thereof | |
| RU2728859C2 (en) | Composition of powdered calcium nitrate for fertilizer reflux, which includes nutritional microorganisms based on nitrates, and a method for production thereof | |
| CN112174732A (en) | Multifunctional nutrient fluid additive and preparation method thereof | |
| KR102580733B1 (en) | Ammonium sulfate fertilizer containing water-soluble micronutrients | |
| CN1293176A (en) | Process for preparing granular composite N-K fertilizer | |
| CN100383091C (en) | Granulating Method in tower type for producing complex fertilizer of nitrogen, phosphor and potass | |
| CN1280971A (en) | Process for preparing high-concentration granular urine-base composite N-K fertilizer | |
| GB2571914A (en) | A process for producing a fertiliser containing boron | |
| CN203639360U (en) | Slow/controlled-release fertilizer production system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210105 |