CN111333460A - Fulvic acid chelated fertilizer and preparation method thereof - Google Patents
Fulvic acid chelated fertilizer and preparation method thereof Download PDFInfo
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- CN111333460A CN111333460A CN202010156193.5A CN202010156193A CN111333460A CN 111333460 A CN111333460 A CN 111333460A CN 202010156193 A CN202010156193 A CN 202010156193A CN 111333460 A CN111333460 A CN 111333460A
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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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Abstract
The invention provides a fulvic acid chelated fertilizer which comprises the following raw materials in parts by weight: 20-50 parts of urea, 20-40 parts of monoammonium phosphate, 15-30 parts of potassium chloride or potassium sulfate, 18.75-25 parts of fulvic acid, 0.1-0.3 part of chelating agent and 0.4-0.8 part of anti-caking agent. The invention also provides a preparation method of the fulvic acid chelated fertilizer. The fulvic acid chelate fertilizer has rich fulvic acid content, and is added with a strong chelating agent, so that the fertilizer really plays a role in chelation, and crops can absorb various trace metal nutrient elements more easily; and the fertilizer contains major elements of nitrogen, phosphorus and potassium required by plant growth, can supplement the major elements, the medium elements and the trace elements required by the growth of crops, has the effects of resisting diseases and insects, lodging, continuous cropping, cold and drought, improving the quality of the crops, increasing the unit weight of fruits and the like, and finally achieves the purposes of increasing yield and income and improving the soil.
Description
Technical Field
The invention relates to the technical field of fertilizers, and particularly relates to a fulvic acid chelated fertilizer and a preparation method thereof.
Background
According to the call of China and the rural area of agriculture, beautiful China is built to restore soil, and organic green agricultural products are achieved from soil to dining tables. In agricultural planting, the use amount of large fertilizers is reduced, and organic fertilizers are advocated. Nitrogen, phosphorus and potassium are essential elements for plant growth, but the content of nitrogen, phosphorus and potassium in the organic fertilizer is low, and if the organic fertilizer is used by field farmers in a large scale to replace large fertilizers, the planting yield is greatly reduced.
Therefore, the chelate fertilizer can be produced at once, most of the chelate fertilizers circulating in the market are singly added with substances such as humic acid and the like, the humic acid has a certain chelation effect, but the action rate is low, and the content of the humic acid in the fertilizer is not high, so that the chelate effect which can be really played is very little. There is an urgent need for a fertilizer that can truly chelate trace metal nutrients and make crops more easily absorb the trace metal nutrients.
Disclosure of Invention
The invention overcomes the defects in the prior art and provides the fulvic acid chelated fertilizer capable of supplementing a large amount of trace elements, medium amount of trace elements and a preparation method thereof.
The specific technical scheme of the invention is as follows:
the fulvic acid chelated fertilizer comprises the following raw materials in parts by weight: 20-50 parts of urea, 20-40 parts of monoammonium phosphate, 15-30 parts of potassium chloride or potassium sulfate, 18.75-25 parts of fulvic acid, 0.1-0.3 part of chelating agent and 0.4-0.8 part of anti-caking agent.
Fulvic acid is an organic matter and is an organic substance containing a vital function, and all substances (main elements are carbon, hydrogen and oxygen) which are alive or left after the life is ended in soil (which is expanded to the whole natural world) belong to the category of organic matters. Fulvic acid, amino acids, humic acids, alginic acids are of life origin (plants, animals and microorganisms), while proteins, fats, starches, cellulose, tannins, gums, resins, etc., also from living matter, are organic matter. If the content of organic matters in the fulvic acid is less than or equal to 80 percent, the content of organic matters in the produced fulvic acid chelated fertilizer is lower, and the ideal effect required by the fulvic acid chelated fertilizer cannot be achieved. Preferably, the content of organic matters in the fulvic acid is more than or equal to 80%.
Preferably, the chelating agent is disodium ethylene diamine tetraacetate; is a good complexing agent in chemistry, and has six coordination atoms, and the formed coordination compound is called chelate, which is a hexadentate ligand and can chelate a plurality of metal ions. The 4 acid and 2 amine parts of the chelate can be used as teeth of a ligand to form a chelate with metal ions such as manganese (II), copper (II), iron (III), cobalt (II) and the like, has wide coordination performance, can almost form a stable chelate with all metal ions, and has good effect.
The fulvic acid chelated fertilizer disclosed by the invention adopts a proper amount of anti-hardening agent, so that the drying effect, moisture resistance and mildew resistance can be realized, the particle size consistency of fertilizer particles can be ensured, and the mixed powder of the product is reduced.
The invention also relates to a preparation method of the fulvic acid chelated fertilizer, which comprises the following steps:
(1) uniformly stirring urea, monoammonium phosphate, potassium chloride or potassium sulfate, fulvic acid and a chelating agent to obtain a mixture;
(2) granulating and sieving the mixture to obtain a semi-finished product;
(3) heating the semi-finished product, and then cooling to obtain qualified granules;
(4) carrying out primary coating on the qualified granules by adopting fulvic acid as a coating material to obtain primary coated granules;
(5) and carrying out secondary coating on the primary coated particles by adopting a plate-proofing agent to prepare the fulvic acid chelated fertilizer.
Fulvic acid is an organic matter, is an organic substance with a vital function, and is a microbial food. The preparation method comprises the steps of coating qualified granular semi-finished products twice to prepare fulvic acid chelated fertilizer, applying the fulvic acid chelated fertilizer into soil, when the temperature of the soil reaches above 5-10 ℃ and the relative humidity is above 60%, the fertilizer starts to decompose, and microbial groups in the soil start to revive. The purpose of adopting the anti-caking agent for secondary coating is to reduce the loss of the fulvic acid, the appearance of the granules is beautiful, and the fertilizer is slowly released when being applied to soil, thereby achieving the effect of controlled release.
Preferably, in the step (2), the mixture is granulated, then heated for 5-7 minutes at 210-230 ℃, cooled and sieved to obtain a semi-finished product; so as to control the humidity of the semi-finished product to be about 20-30% and facilitate subsequent fulvic acid coating.
Preferably, in the step (3), the semi-finished product is heated for 5-7 minutes at 40-60 ℃, and then cooled to obtain qualified granules; the purpose of heating the semi-finished product is to control the moisture and the particle hardness of the fertilizer, so that the subsequent mechanical fertilization is facilitated.
When fulvic acid is used as a coating material for coating, the content of fulvic acid is more, so that the coating cannot be covered, and waste is caused, and the preferable weight ratio of fulvic acid added in the step (1) to fulvic acid added in the step (4) is 7: 3. The fulvic acid in the fertilizer has reasonable internal and external contents.
The chelating agent of the invention can selectively capture certain metal ions in plant cells and release the metal ions in a proper amount if necessary. The chelating agent has the capability of catching (swallowing or capturing) and longitudinally (spitting or releasing) metal ions, so that the crops can absorb nutrition more easily and more fully and reasonably. Therefore, it plays the role of a command part in the plant body, balances the nutrition supply among roots, stems, leaves, flowers and fruits and enables the plant to thrive.
The fulvic acid chelate fertilizer has rich fulvic acid content, and is added with a strong chelating agent, so that the fertilizer really plays a role in chelation, and crops can absorb various trace metal nutrient elements more easily; and the fertilizer contains major elements of nitrogen, phosphorus and potassium required by plant growth, can supplement the major elements, the medium elements and the trace elements required by the growth of crops, has the effects of resisting diseases and insects, lodging, continuous cropping, cold and drought, improving the quality of the crops, increasing the unit weight of fruits and the like, and finally achieves the purposes of increasing yield and income and improving the soil. The continuous use for more than three years can greatly improve the soil environment of the saline-alkali soil.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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. The invention is not mentioned in part as prior art.
The organic matter content of the fulvic acid used in the examples is more than or equal to 80%.
Example 1
A fulvic acid chelated fertilizer (nitrogen phosphorus potassium formula 22-8-10) comprises the following raw materials in parts by weight: 38.3 parts of urea, 22.3 parts of monoammonium phosphate, 16.2 parts of potassium chloride, 18.9 parts of fulvic acid, 0.2 part of disodium ethylenediamine tetraacetic acid and 0.6 part of an anti-hardening agent.
The method for preparing the fulvic acid chelated fertilizer by adopting the raw materials comprises the following steps:
(1) adding urea, monoammonium phosphate, potassium chloride, fulvic acid and disodium ethylene diamine tetraacetate into a stirrer, and uniformly stirring to obtain a mixture.
(2) And (3) granulating the mixture in a granulator, heating the mixture in a first dryer to 210-230 ℃ for 5-7 minutes, cooling, screening by using a fine powder screen and a large particle screen, enabling the qualified granules to enter the next procedure, and enabling the unqualified granules to enter a pulverizer for continuous pulverization to obtain a semi-finished product.
(3) And (4) placing the semi-finished product in a second dryer for secondary heating to 40-60 ℃ for 5-7 minutes, and then cooling to obtain qualified granules.
(4) And (4) feeding the qualified granules into a coating machine, and performing primary coating by using fulvic acid as a coating material to obtain primary coated granules.
(5) And carrying out secondary coating on the primary coated particles by adopting a plate-proofing agent to prepare the fulvic acid chelated fertilizer.
(6) And filling and sealing the fulvic acid chelated fertilizer to obtain a finished product.
Wherein the weight ratio of the fulvic acid added in the step (1) to the fulvic acid added in the step (4) is 7: 3.
Example 2
A fulvic acid chelated fertilizer (nitrogen phosphorus potassium formula 25-8-9) comprises the following raw materials in parts by weight: 41.5 parts of urea, 17.8 parts of monoammonium phosphate, 16.2 parts of potassium chloride, 20.2 parts of fulvic acid, 0.2 part of disodium ethylenediamine tetraacetic acid and 0.7 part of an anti-hardening agent.
The method for preparing fulvic acid chelated fertilizer by using the raw materials is shown in example 1.
Wherein the weight ratio of the fulvic acid added in the step (1) to the fulvic acid added in the step (4) is 7: 3.
Example 3
A fulvic acid chelated fertilizer (nitrogen phosphorus and potassium formula 16-10-14) comprises the following raw materials in parts by weight:
20.9 parts of urea, 33.4 parts of monoammonium phosphate, 21 parts of potassium chloride, 20.4 parts of fulvic acid, 0.2 part of disodium ethylenediamine tetraacetic acid and 0.6 part of an antiplatelet agent.
The method for preparing fulvic acid chelated fertilizer by using the raw materials is shown in example 1.
Wherein the weight ratio of the fulvic acid added in the step (1) to the fulvic acid added in the step (4) is 7: 3.
Example 4
A fulvic acid chelated fertilizer (nitrogen, phosphorus and potassium formula 16-12-12) comprises the following raw materials in parts by weight: 36.7 parts of urea, 20 parts of monoammonium phosphate, 17.8 parts of potassium chloride, 19.6 parts of fulvic acid, 0.2 part of disodium ethylenediamine tetraacetic acid and 0.7 part of an anti-hardening agent.
The method for preparing fulvic acid chelated fertilizer by using the raw materials is shown in example 1.
Wherein the weight ratio of the fulvic acid added in the step (1) to the fulvic acid added in the step (4) is 7: 3.
Example 5
A fulvic acid chelated fertilizer (nitrogen phosphorus potassium formula 12-16-14) comprises the following raw materials in parts by weight: 19.2 parts of urea, 31.2 parts of monoammonium phosphate, 22.6 parts of potassium sulfate, 20.1 parts of fulvic acid, 0.2 part of disodium ethylenediamine tetraacetic acid and 0.8 part of an anti-hardening agent.
The method for preparing fulvic acid chelated fertilizer by using the raw materials is shown in example 1.
Wherein the weight ratio of the fulvic acid added in the step (1) to the fulvic acid added in the step (4) is 7: 3.
Example 6
A fulvic acid chelated fertilizer (nitrogen phosphorus potassium formula 13-17-15) comprises the following raw materials in parts by weight: 20.2 parts of urea, 32.2 parts of monoammonium phosphate, 23.6 parts of potassium sulfate, 20.2 parts of fulvic acid, 0.2 part of disodium ethylenediamine tetraacetic acid and 0.7 part of an anti-hardening agent.
The method for preparing fulvic acid chelated fertilizer by using the raw materials is shown in example 1.
Wherein the weight ratio of the fulvic acid added in the step (1) to the fulvic acid added in the step (4) is 7: 3.
The test of planting corn, rice, peanut, soybean, sorghum and other crops and various lands by using the fulvic acid chelated fertilizer is carried out. The test result shows that the fertilizer can greatly enhance the effects of continuous cropping resistance, low temperature resistance, drought resistance, lodging resistance and the like of crops, so that farmers do not need to use fertilizers and medicines for two times after using common fertilizers and can also achieve the same effect; the farmers save time and labor and reduce the cost expenditure at the same time. The pesticide is reduced, and the environment is protected. The fulvic acid chelated fertilizer can effectively improve the yield, and the yield can be improved by 3-8% for various crops under the same seed, the same fertilizing amount and the same planting conditions. The usage of the fulvic acid chelated fertilizer can improve the soil environment.
Common land: after one year of planting in the same land, the soil is deepened, softened and hardened by using the fertilizer and the common fertilizer, and the soil is more thoroughly diffused. Saline-alkali soil: after continuous use for more than three years, the saline-alkali condition is obviously reduced, and the pH value can be reduced by about 0.3-1.0.
Test examples:
the first test case is as follows:
a place: the area of the northern village of five tree town trees in Jilin province, white city, Zhen 361699: 300 mu
Planting the variety: rice (Oryza sativa L.) with improved resistance to stress
Land conditions: the experimental process and the result of the severe saline-alkali soil are as follows: the test is carried out on a paddy field in five tree towns, and the soil condition before the test is as follows: the pH value of the severe saline-alkali soil is 9.7, the soil is seriously cracked and the surface of the severe saline-alkali soil is saltish in a non-planting period, and obvious 'white frost', namely saline-alkali powder, is formed on the surface of the severe saline-alkali soil. During planting, the soil has large viscosity, difficult land turning, large block, easy slipping when meeting water on the surface and low water absorption capacity. The yield of the planted rice per hectare is 4000 jin. After three years of continuous use of fulvic acid chelated fertilizer (nitrogen phosphorus potassium formula 16-12-12), the fertilizing amount per mu is 30kg, the saline-alkali degree of soil is obviously reduced, severe saline-alkali is changed into moderate saline-alkali, the soil viscosity is reduced, and no obvious white frost is generated during drought. The yield is increased to 8000 jin per hectare, and the pH value is reduced to 8.6. Therefore, the fulvic acid chelated fertilizer is very effective for improving the saline-alkali soil by continuous use.
Test case two:
a place: zhachen village on front post in rural and agricultural county of Jilin province
The using area is as follows: 4 hectare
Planting the variety: corn (corn)
Land conditions: general plot
Remarking: the profit is calculated according to the corn purchase price of 0.65 yuan/jin in 10 months in 2019
Compared with the common fertilizer, the fulvic acid chelated fertilizer is used for planting the corn, and the yield increase amplitude reaches 8.1 percent. The comparison plot discovers slight plant diseases and insect pests in the planting period, and sprays pesticides about 100 yuan, and the comparison shows that the product brings net income to farmers in the area of 700 yuan per hectare, and no plant diseases and insect pests occur in the test plot, so that the spraying of pesticides is reduced, and the environment protection is facilitated.
Test case three:
a place: country of China in Songyuan city
The using area is as follows: 2 hectare
Planting the variety: peanut
Land conditions: general plot
Compared with the common fertilizer, the fulvic acid chelated fertilizer is used for planting peanuts, and the yield increase amplitude reaches 16.2%. Due to remarks: the profit is calculated according to the purchasing price of 2 yuan/jin of peanuts in 2019 and 10 months, the peanuts are planted in the plot in successive years, the continuous cropping phenomenon and the soil-borne diseases are serious, the diseases occur in the test plot and the comparison plot, but the diseases in the test plot are slight, the diseases in the comparison plot are serious, and the yield is influenced. Both plots were sprayed with pesticide and foliar fertilizer. By contrast, the product is found to bring about 3000 net income per hectare for farmers in the area, and the benefit is very great.
Test case four:
a place: xingan Jianzhao 361699. Teqi Gaoluzhen
The using area is as follows: 1.3 hectare
Planting the variety: conventional Rice Yulong No. 2
Land conditions: general plot
The fertilizing method is that the same seeds are used in the same land, the same mechanical cultivation is carried out, the same person manages and applies fertilizer by the same amount of jin, and the specific amount can be flexibly mastered according to the local conventional fertilizing amount, the soil fertility level and the yield level according to local conditions. The fertilizer application amount is about: 30kg of base fertilizer per mu, 8kg of striking root fertilizer and 5kg of tillering fertilizer.
Fertilizer test farming questionnaire
Fertilizer test farming questionnaire
Compared with the common fertilizer, the fulvic acid chelated fertilizer is used for planting the rice, and the yield increase amplitude reaches 8.5 percent.
Claims (7)
1. The fulvic acid chelated fertilizer is characterized by comprising the following raw materials in parts by weight: 20-50 parts of urea, 20-40 parts of monoammonium phosphate, 15-30 parts of potassium chloride or potassium sulfate, 18.75-25 parts of fulvic acid, 0.1-0.3 part of chelating agent and 0.4-0.8 part of anti-caking agent.
2. The fulvic acid chelated fertilizer of claim 1, wherein the fulvic acid has an organic matter content of 80% or more.
3. The fulvic acid chelate fertilizer according to claim 1 or 2, wherein the chelating agent is disodium ethylenediaminetetraacetate.
4. A process for preparing a fulvic acid chelate fertilizer according to any one of claims 1 to 3, comprising the steps of:
(1) uniformly stirring urea, monoammonium phosphate, potassium chloride or potassium sulfate, fulvic acid and a chelating agent to obtain a mixture;
(2) granulating and sieving the mixture to obtain a semi-finished product;
(3) heating the semi-finished product, and then cooling to obtain qualified granules;
(4) carrying out primary coating on the qualified granules by adopting fulvic acid as a coating material to obtain primary coated granules;
(5) and carrying out secondary coating on the primary coated particles by adopting a plate-proofing agent to prepare the fulvic acid chelated fertilizer.
5. The preparation method according to claim 4, wherein in the step (2), the mixture is granulated, then heated at 210-230 ℃ for 5-7 minutes, cooled and sieved to obtain a semi-finished product.
6. The preparation method according to claim 4, wherein in the step (3), the semi-finished product is heated at 40-60 ℃ for 5-7 minutes, and then cooled to obtain qualified granules.
7. The method according to claim 4, wherein the fulvic acid is added in step (1) and step (4) in a weight ratio of 7: 3.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113439519A (en) * | 2021-06-24 | 2021-09-28 | 山东万物新农业科技有限公司 | Topdressing fertilizer production and application method for crop topdressing-free fertilizer, pesticide saving by 30%, yield increasing, quality improving and efficiency increasing |
| CN114478113A (en) * | 2022-01-13 | 2022-05-13 | 清远市美村生物技术有限公司 | Special stress-resistant fertilizer for golf turfgrass and preparation method thereof |
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| CN102731209A (en) * | 2012-06-27 | 2012-10-17 | 河南农飞生物科技有限公司 | Amino acid humic acid organic and inorganic compound mixing fertilizer and production method thereof |
| CN108530213A (en) * | 2018-07-13 | 2018-09-14 | 四川盛世中农农资有限公司 | A kind of efficient compound fertilizer and preparation method thereof |
| CN109734511A (en) * | 2019-02-21 | 2019-05-10 | 西安唯拓尔农业科技有限公司 | A kind of degradable composite coating material and its application |
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2020
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102731209A (en) * | 2012-06-27 | 2012-10-17 | 河南农飞生物科技有限公司 | Amino acid humic acid organic and inorganic compound mixing fertilizer and production method thereof |
| CN108530213A (en) * | 2018-07-13 | 2018-09-14 | 四川盛世中农农资有限公司 | A kind of efficient compound fertilizer and preparation method thereof |
| CN109734511A (en) * | 2019-02-21 | 2019-05-10 | 西安唯拓尔农业科技有限公司 | A kind of degradable composite coating material and its application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113439519A (en) * | 2021-06-24 | 2021-09-28 | 山东万物新农业科技有限公司 | Topdressing fertilizer production and application method for crop topdressing-free fertilizer, pesticide saving by 30%, yield increasing, quality improving and efficiency increasing |
| CN114478113A (en) * | 2022-01-13 | 2022-05-13 | 清远市美村生物技术有限公司 | Special stress-resistant fertilizer for golf turfgrass and preparation method thereof |
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