CN112794769A - Multi-element fertilizer additive and preparation method thereof - Google Patents
Multi-element fertilizer additive and preparation method thereof Download PDFInfo
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- CN112794769A CN112794769A CN202110236849.9A CN202110236849A CN112794769A CN 112794769 A CN112794769 A CN 112794769A CN 202110236849 A CN202110236849 A CN 202110236849A CN 112794769 A CN112794769 A CN 112794769A
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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
- 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
- C05G3/80—Soil conditioners
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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
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
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Abstract
The invention discloses a multi-element fertilizer additive and a preparation method thereof, wherein the multi-element fertilizer additive comprises the following components in parts by weight: NTA1-3 parts, polyaspartic acid 0.5-1.5 parts, potassium hydroxide 3-9 parts, urea 5-20 parts, diammonium phosphate 10-26 parts, potassium nitrate 6-12 parts, magnesium nitrate hexahydrate 0.5-2 parts, calcium ammonium nitrate 0.5-2 parts, ferrous sulfate heptahydrate 0.2-0.5 part, copper sulfate pentahydrate 0.1-0.3 part, zinc sulfate heptahydrate 0.1-0.3 part, and boric acid 0.2-0.5 part. The multi-element fertilizer additive prepared by the invention provides comprehensive nutrients for the growth and development of crops, is not easy to be fixed or lost by soil, and has the advantages of easy absorption by crops, higher fertilizer utilization rate, reduction of environmental pollution and the like.
Description
Technical Field
The invention relates to the field of fertilizers, in particular to a multi-element fertilizer additive and a preparation method thereof.
Background
China is the country with the most population in the world, and is also a big agricultural country and a big fertilizer production and consumption country. The fertilizer is an important production material of agriculture, and plays an important role in the development of agricultural production, particularly grain production. Chen wen fu ji expressed: "I use less than 10% of cultivated land in the world, and live 22% of the population in the world, which is not separated from the contribution of fertilizer. However, in actual production, unreasonable fertilization leads to extremely low nutrient utilization rate of fertilizer farmlands in China, and particularly the nitrogen utilization rate is only about 30%. The unreasonable fertilization structure mainly shows that: heavy fertilizer and light organic fertilizer; heavy nitrogen fertilizer, light phosphorus potassium; heavy major elements, light medium trace elements. Therefore, scientific and reasonable fertilization is an important factor for ensuring high quality and high yield of crops. At present, various multi-element compound fertilizers, trace element fertilizers, organic fertilizers and the like with different proportions are available on the market, and can provide comprehensive nutrients for crop growth. However, with the proposal of zero growth action of chemical fertilizers and pesticides, the development of green fertilizer products and the improvement of the utilization rate of fertilizers are the future fertilizer development directions.
Besides nitrogen, phosphorus and potassium, the medium trace elements are also necessary nutrient elements for the growth and development of crops, and have promotion effects on improving the effective nutrients of soil, reducing the toxicity of crops, enhancing the resistance of crops and the like. However, if the medium trace elements in the fertilizer are applied to the soil in the form of metal salts, the medium trace elements are easily fixed or lost by the soil and cannot be effectively absorbed by crops, and the effectiveness of other nutrients can be influenced. According to the report, the utilization rate of the fertilizer can be remarkably improved by 2-5 times after the medium elements are chelated, and the utilization rate of the fertilizer can be higher when the fertilizer is used with a large-amount element nitrogen-phosphorus-potassium formula according to the fertilizer requirement rule of crops and the fertilizer supply capacity of soil. For example, CN1194964A 'multielement chelate fertilizer and manufacturing method', CN107226733A 'novel multielement ecological chelate fertilizer and manufacturing method', the chelating agent is applied in the fertilizer, the utilization rate of the fertilizer is improved to a certain extent, and the crop yield is increased. Compared with EDTA, humic acid, amino acid and the like which are widely applied at present, the aminocarboxylic acid chelating agent NTA has good biodegradability, small environmental load, no phosphorus, no concern of eutrophication to water bodies, strong chelating capacity, high cost performance and environmental friendliness.
Therefore, in combination with the above problems, providing a safe, environment-friendly, green and ecological multi-element fertilizer additive and a preparation method thereof is one of the important measures for improving the quality and efficiency of crops and reducing agricultural non-point source pollution, and is also a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a multi-element fertilizer auxiliary agent and a preparation method thereof, the invention mixes a fertilizer synergistic agent polyaspartic acid with a biodegradable chelating agent NTA, then the mixture is chelated with medium trace elements to form water-soluble chelates and is properly compatible with a large number of elements to prepare the novel multi-element fertilizer synergistic agent, thereby providing comprehensive nutrients for the growth and development of crops, avoiding the plant nutrient deficiency caused by nutrient deficiency, being not easy to be fixed or lost by soil, having the advantages of easy absorption by the crops, higher fertilizer utilization rate and environmental pollution reduction, and the multi-element fertilizer auxiliary agent provided by the invention is a comprehensive-nutrient and green ecological fertilizer synergistic agent.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a multi-element fertilizer additive comprises the following components in parts by weight: NTA1-3 parts, polyaspartic acid 0.5-1.5 parts, potassium hydroxide 3-9 parts, urea 5-20 parts, diammonium phosphate 10-26 parts, potassium nitrate 6-12 parts, magnesium nitrate hexahydrate 0.5-2 parts, calcium ammonium nitrate 0.5-2 parts, ferrous sulfate heptahydrate 0.2-0.5 part, copper sulfate pentahydrate 0.1-0.3 part, zinc sulfate heptahydrate 0.1-0.3 part, and boric acid 0.2-0.5 part.
Preferably, the multi-element fertilizer additive comprises the following components in parts by weight: 1 parts of NTA, 0.5 part of polyaspartic acid, 3 parts of potassium hydroxide, 5 parts of urea, 18 parts of diammonium phosphate, 12 parts of potassium nitrate, 0.5 part of magnesium nitrate hexahydrate, 0.5 part of calcium ammonium nitrate, 0.2 part of ferrous sulfate heptahydrate, 0.1 part of copper sulfate pentahydrate, 0.1 part of zinc sulfate heptahydrate and 0.2 part of boric acid.
Preferably, the multi-element fertilizer additive comprises the following components in parts by weight: NTA3 parts, polyaspartic acid 1.5 parts, potassium hydroxide 9 parts, urea 18 parts, diammonium phosphate 18 parts, potassium nitrate 6 parts, magnesium nitrate hexahydrate 2 parts, calcium ammonium nitrate 2 parts, ferrous sulfate heptahydrate 0.5 parts, copper sulfate pentahydrate 0.3 parts, zinc sulfate heptahydrate 0.3 parts, and boric acid 0.5 parts.
Preferably, the potassium hydroxide contains KOH of more than or equal to 90 percent, the urea contains N of more than or equal to 46 percent, the diammonium phosphate contains N of more than or equal to 20 percent and P2O5 of more than or equal to 53 percent, the potassium nitrate contains N of more than or equal to 13 percent and K2O of more than or equal to 46 percent, the magnesium nitrate hexahydrate contains MgO of more than or equal to 16 percent and N of more than or equal to 11 percent, the calcium ammonium nitrate contains CaO of more than or equal to 25 percent and N of more than or equal to 15 percent, the ferrous sulfate heptahydrate contains Fe of more than or equal to 20 percent, the copper sulfate pentahydrate contains Cu of more than or equal to 25 percent.
A preparation method of a multi-element fertilizer additive comprises the following specific steps:
s1, preparation of NTA salt solution: weighing distilled water, placing the distilled water into a beaker, adding NTA into the beaker, uniformly stirring, adding solid potassium hydroxide, and stirring until the mixed solution is clear and transparent, wherein the stirring speed is 100 plus 120rpm, and the stirring time is 1-1.2h, so as to obtain an NTA salt solution with the mass fraction of 5% -15%;
s2, preparation of the compound chelating agent: keeping the stirring state, adding polyaspartic acid into NTA salt solution, wherein the weight ratio of polyaspartic acid to NTA is 1:2, the stirring speed is 100 and 120rpm, and stirring for 10-20min at the temperature of 60-80 ℃ to obtain a composite chelating agent;
s3, chelation reaction: keeping stirring state at 60rpm, sequentially adding magnesium nitrate hexahydrate, calcium ammonium nitrate, ferrous sulfate heptahydrate, copper sulfate pentahydrate, zinc sulfate heptahydrate and boric acid into the compound chelating agent, stirring for 40-60min, and keeping the temperature at 60-80 deg.C for 2-3h to obtain water-soluble chelating agent;
or cooling and crystallizing the obtained water-soluble chelating agent at 0-5 deg.C for 4-6h, filtering with centrifugal separator to obtain solid, drying in a dryer at 180-200 deg.C for 20min, and pulverizing in a pulverizer to obtain powdery chelate;
s4, weighing urea, diammonium phosphate and potassium nitrate, mixing, adding the chelating agent obtained in the step S3, uniformly mixing, placing into a roller granulator for granulation, drying, cooling, screening and packaging to obtain the multi-element fertilizer auxiliary agent.
By adopting the technical scheme, the invention has the following beneficial effects:
the chelating agent NTA added into the fertilizer auxiliary agent is an environment-friendly stable chelating agent, can form a stable metal chelate with various metals, is easy to biodegrade, has small load on the environment, does not contain phosphorus, and cannot cause eutrophication to a water body; the polyaspartic acid has good biodegradability and chelation effect on metal ions, and the polyaspartic acid with certain molecular mass can enrich nitrogen, phosphorus, potassium and medium and trace elements to supply to plants, so that the plants can more effectively utilize fertilizers, the yield and the quality of crops are improved, and the soil quality can be improved; the fertilizer additive contains various medium and trace elements necessary for crop growth, is applied to agricultural production in a chelated state, is not easy to be fixed or lost by soil, and simultaneously contains a large amount of nutrient elements, so that the nutrient deficiency of plants caused by the lack of the nutrient elements can be avoided.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment 1 of the invention discloses a multi-element fertilizer additive which comprises the following components in parts by weight:
1 parts of NTA, 0.5 part of polyaspartic acid, 3 parts of potassium hydroxide, 5 parts of urea, 18 parts of diammonium phosphate, 12 parts of potassium nitrate, 0.5 part of magnesium nitrate hexahydrate, 0.5 part of calcium ammonium nitrate, 0.2 part of ferrous sulfate heptahydrate, 0.1 part of copper sulfate pentahydrate, 0.1 part of zinc sulfate heptahydrate and 0.2 part of boric acid.
Wherein, by mass fraction, KOH in potassium hydroxide is more than or equal to 90 percent, N in urea is more than or equal to 46 percent, N in diammonium phosphate is more than or equal to 20 percent, and P is2O5Not less than 53%, and N not less than 13% and K in the potassium nitrate2O is more than or equal to 46 percent, MgO in the magnesium nitrate hexahydrate is more than or equal to 16 percent, and N is more than or equal to 1 percent1 percent, CaO in the calcium ammonium nitrate is more than or equal to 25 percent, N is more than or equal to 15 percent, Fe in the ferrous sulfate heptahydrate is more than or equal to 20 percent, Cu in the copper sulfate pentahydrate is more than or equal to 25 percent, Zn in the zinc sulfate heptahydrate is more than or equal to 21 percent, and B in the boric acid is more than or equal to 17 percent.
A preparation method of a multi-element fertilizer additive comprises the following steps of weighing all components according to a formula ratio for later use:
s1, preparation of NTA salt solution: weighing distilled water, putting the distilled water into a beaker, adding NTA into the beaker, uniformly stirring, adding potassium hydroxide, and stirring until a mixed solution is clear and transparent, wherein the stirring speed is 110rpm, and the stirring time is 1h, so as to obtain an NTA salt solution with the mass fraction of 5%;
s2, preparation of the compound chelating agent: keeping the stirring state, adding polyaspartic acid into NTA salt solution, stirring at 110rpm, and stirring at 75 deg.C for 15min to obtain compound chelating agent;
s3, chelation reaction: keeping stirring state at 60rpm, sequentially adding magnesium nitrate hexahydrate, calcium ammonium nitrate, ferrous sulfate heptahydrate, copper sulfate pentahydrate, zinc sulfate heptahydrate and boric acid into the composite chelating agent, stirring for 40-60min, and keeping the temperature at 75 deg.C for 2h to obtain water-soluble chelating agent;
s4, weighing urea, diammonium phosphate and potassium nitrate, mixing, adding the chelating agent obtained in the step S3, uniformly mixing, placing into a roller granulator for granulation, drying, cooling, screening and packaging to obtain the multi-element fertilizer auxiliary agent.
Example 2
The embodiment 2 of the invention discloses a multi-element fertilizer additive which comprises the following components in parts by weight:
NTA3 parts, polyaspartic acid 1.5 parts, potassium hydroxide 9 parts, urea 18 parts, diammonium phosphate 18 parts, potassium nitrate 6 parts, magnesium nitrate hexahydrate 2 parts, calcium ammonium nitrate 2 parts, ferrous sulfate heptahydrate 0.5 parts, copper sulfate pentahydrate 0.3 parts, zinc sulfate heptahydrate 0.3 parts, and boric acid 0.5 parts.
Wherein, by mass fraction, KOH in potassium hydroxide is more than or equal to 90 percent, N in urea is more than or equal to 46 percent, N in diammonium phosphate is more than or equal to 20 percent, and P is2O5Not less than 53 percent, saidN in potassium nitrate is more than or equal to 13 percent and K2O is more than or equal to 46 percent, MgO is more than or equal to 16 percent in the magnesium nitrate hexahydrate, N is more than or equal to 11 percent, CaO is more than or equal to 25 percent in the calcium ammonium nitrate, N is more than or equal to 15 percent, Fe is more than or equal to 20 percent in the ferrous sulfate heptahydrate, Cu is more than or equal to 25 percent in the copper sulfate pentahydrate, Zn is more than or equal to 21 percent in the zinc sulfate heptahydrate, and B is more than or equal.
A preparation method of a multi-element fertilizer additive comprises the following steps of weighing all components according to a formula ratio for later use:
s1, preparation of NTA salt solution: weighing distilled water, putting the distilled water into a beaker, adding NTA into the beaker, uniformly stirring, adding potassium hydroxide, and stirring until a mixed solution is clear and transparent, wherein the stirring speed is 115rpm, and the stirring time is 1.2h, so as to obtain an NTA salt solution with the mass fraction of 15%;
s2, preparation of the compound chelating agent: keeping the stirring state, adding polyaspartic acid into NTA salt solution, stirring at 115rpm for 20min at 75 ℃ to obtain a compound chelating agent;
s3, chelation reaction: keeping stirring state at 60rpm, sequentially adding magnesium nitrate hexahydrate, calcium ammonium nitrate, ferrous sulfate heptahydrate, copper sulfate pentahydrate, zinc sulfate heptahydrate and boric acid into the composite chelating agent, stirring for 40-60min, and keeping the temperature at 75 deg.C for 2.5h to obtain water-soluble chelating agent;
cooling and crystallizing the obtained water-soluble chelating agent at 0-5 deg.C for 4-6h, filtering with centrifugal separator to obtain solid, drying in a dryer at 180-200 deg.C for 20min, and pulverizing in a pulverizer to obtain powdered chelate
S4, weighing urea, diammonium phosphate and potassium nitrate, mixing, adding the chelating agent obtained in the step S3, uniformly mixing, placing into a roller granulator for granulation, drying, cooling, screening and packaging to obtain the multi-element fertilizer auxiliary agent.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The multi-element fertilizer additive is characterized by comprising the following components in parts by weight: NTA1-3 parts, polyaspartic acid 0.5-1.5 parts, potassium hydroxide 3-9 parts, urea 5-20 parts, diammonium phosphate 10-26 parts, potassium nitrate 6-12 parts, magnesium nitrate hexahydrate 0.5-2 parts, calcium ammonium nitrate 0.5-2 parts, ferrous sulfate heptahydrate 0.2-0.5 part, copper sulfate pentahydrate 0.1-0.3 part, zinc sulfate heptahydrate 0.1-0.3 part, and boric acid 0.2-0.5 part.
2. The multi-element fertilizer additive as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 1 parts of NTA, 0.5 part of polyaspartic acid, 3 parts of potassium hydroxide, 5 parts of urea, 18 parts of diammonium phosphate, 12 parts of potassium nitrate, 0.5 part of magnesium nitrate hexahydrate, 0.5 part of calcium ammonium nitrate, 0.2 part of ferrous sulfate heptahydrate, 0.1 part of copper sulfate pentahydrate, 0.1 part of zinc sulfate heptahydrate and 0.2 part of boric acid.
3. The multi-element fertilizer additive as claimed in claim 1, which is characterized by comprising the following components in parts by weight: NTA3 parts, polyaspartic acid 1.5 parts, potassium hydroxide 9 parts, urea 18 parts, diammonium phosphate 18 parts, potassium nitrate 6 parts, magnesium nitrate hexahydrate 2 parts, calcium ammonium nitrate 2 parts, ferrous sulfate heptahydrate 0.5 parts, copper sulfate pentahydrate 0.3 parts, zinc sulfate heptahydrate 0.3 parts, and boric acid 0.5 parts.
4. The multi-element fertilizer additive as claimed in any one of claims 1-3, wherein KOH in said potassium hydroxide is 90% or more, N in said urea is 46% or more, N in said diammonium phosphate is 20% or more, and P is 20% or more, by mass2O5Not less than 53%, and N not less than 13% and K in the potassium nitrate2O is more than or equal to 46 percent, MgO in the magnesium nitrate hexahydrate is more than or equal to 16 percent, N is more than or equal to 11 percent, CaO in the calcium ammonium nitrate is more than or equal to 25 percent, and N is more than or equal to 15 percentFe in the ferrous sulfate heptahydrate is more than or equal to 20 percent, Cu in the copper sulfate pentahydrate is more than or equal to 25 percent, Zn in the zinc sulfate heptahydrate is more than or equal to 21 percent, and B in the boric acid is more than or equal to 17 percent.
5. The method for preparing the multi-element fertilizer additive according to claim 1, comprising the following steps:
s1, preparation of NTA salt solution: weighing distilled water, placing the distilled water into a beaker, adding NTA into the beaker, uniformly stirring, adding solid potassium hydroxide, and stirring until the mixed solution is clear and transparent, wherein the stirring speed is 100 plus 120rpm, and the stirring time is 1-1.2h, so as to obtain an NTA salt solution with the mass fraction of 5% -15%;
s2, preparation of the compound chelating agent: keeping the stirring state, adding polyaspartic acid into NTA salt solution, wherein the weight ratio of polyaspartic acid to NTA is 1:2, the stirring speed is 100 and 120rpm, and stirring for 10-20min at the temperature of 60-80 ℃ to obtain a composite chelating agent;
s3, chelation reaction: keeping stirring state at 60rpm, sequentially adding magnesium nitrate hexahydrate, calcium ammonium nitrate, ferrous sulfate heptahydrate, copper sulfate pentahydrate, zinc sulfate heptahydrate and boric acid into the compound chelating agent, stirring for 40-60min, and keeping the temperature at 60-80 deg.C for 2-3h to obtain water-soluble chelating agent;
or cooling and crystallizing the obtained water-soluble chelating agent at 0-5 deg.C for 4-6h, filtering with centrifugal separator to obtain solid, drying in a dryer at 180-200 deg.C for 20min, and pulverizing in a pulverizer to obtain powdery chelate;
s4, weighing urea, diammonium phosphate and potassium nitrate, mixing, adding the chelating agent obtained in the step S3, uniformly mixing, placing into a roller granulator for granulation, drying, cooling, screening and packaging to obtain the multi-element fertilizer auxiliary agent.
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Citations (5)
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|---|---|---|---|---|
| CN1093078A (en) * | 1994-03-15 | 1994-10-05 | 王英斌 | Synergistic additives for recompounded fertilizer and production method thereof |
| CN1248564A (en) * | 1999-09-25 | 2000-03-29 | 孙国庆 | Multicomponent fertilizer [powder (containing additives), liquid] and preparation process |
| CN1289743A (en) * | 2000-11-17 | 2001-04-04 | 解俊峰 | Composite organic liquid fertilizer |
| CN107586209A (en) * | 2017-10-30 | 2018-01-16 | 成都云图控股股份有限公司 | A kind of instant chelating solid Water soluble fertilizer and preparation method thereof |
| CN108911874A (en) * | 2018-08-24 | 2018-11-30 | 无为县良峰苗木花卉种植专业合作社 | Dedicated fertilizer is used in a kind of wide yulan cultivation of environmental protection |
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2021
- 2021-03-03 CN CN202110236849.9A patent/CN112794769A/en active Pending
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|---|---|---|---|---|
| CN1093078A (en) * | 1994-03-15 | 1994-10-05 | 王英斌 | Synergistic additives for recompounded fertilizer and production method thereof |
| CN1248564A (en) * | 1999-09-25 | 2000-03-29 | 孙国庆 | Multicomponent fertilizer [powder (containing additives), liquid] and preparation process |
| CN1289743A (en) * | 2000-11-17 | 2001-04-04 | 解俊峰 | Composite organic liquid fertilizer |
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