CN110963842A - Foliar fertilizer rich in organic acid and preparation method thereof - Google Patents
Foliar fertilizer rich in organic acid and preparation method thereof Download PDFInfo
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- CN110963842A CN110963842A CN201911175238.7A CN201911175238A CN110963842A CN 110963842 A CN110963842 A CN 110963842A CN 201911175238 A CN201911175238 A CN 201911175238A CN 110963842 A CN110963842 A CN 110963842A
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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 relates to a foliar fertilizer rich in organic acid and a preparation method thereof. The foliar fertilizer rich in organic acid comprises the following compound raw materials in parts by weight: 800 parts of lignite extracting solution, 20-30 parts of monopotassium phosphate, 20-25 parts of urea, 5-8 parts of magnesium sulfate, 5-8 parts of ammonium molybdate, 5-8 parts of boric acid, 5-8 parts of zinc sulfate, 3-5 parts of copper sulfate and 2-3 parts of amine fresh grease. The beneficial effects are as follows: the foliar fertilizer disclosed by the invention can provide comprehensive nutrient elements for plant growth, regulate the immune system of plants, promote the plant growth, can be used in the whole growth cycle of crops, and has the advantages of cost reduction, efficiency improvement, simple preparation process and reduction of production cost. After being compounded, the raw materials have the functions of improving quality and enhancing efficiency of fertilizer efficiency.
Description
Technical Field
The invention relates to the technical field of agricultural fertilizers, in particular to a foliar fertilizer rich in organic acid and a preparation method thereof.
Background
There are two main ways of absorbing nutrient elements during plant growth and development, namely roots and leaves. The crop can absorb the nutrition from soil or nutrient solution through root to supply the nutrition to plant, besides root, the crop can also absorb the nutrition through stem and leaf (especially leaf), the phenomenon that the non-root absorbs the nutrition during the growth of the crop is the nutrition outside the root of the crop, and the measure of applying the fertilizer to the surface of the nutrient absorber except the root of the crop is the foliar fertilizer. However, the existing foliar fertilizer mainly improves the commodity of crops, is deficient in adjusting plant metabolism, avoiding insect pests, inhibiting diseases and improving the quality of crops, and has the disadvantages of large application amount, multiple times, high cost of manpower and material resources and high production cost of crops. And when the foliar fertilizer is prepared and produced, the process is complex, the steps are multiple, the production cost is increased, and the popularization is not facilitated.
Lignite is mineral coal with a relatively low coalification degree, is an initial product of organic biogenic rock which is transformed by dehydration and compaction after peat deposition, and is named because the appearance is brown or dark brown. The lignite storage capacity is large, but the defects of high moisture and high ash content are undoubtedly revealed and are difficult to utilize all the time, the key point is that the heat generation efficiency is influenced by the overhigh water content, so the lignite can be utilized only after being upgraded, the existing lignite drying and upgrading system directly uses the lignite as electric coal after drying the lignite, the water smoke after drying and upgrading the lignite is discharged after reaching the discharge standard, and the liquid is used as a byproduct of drying and upgrading the lignite. The applicant researches lignite drying and upgrading and agricultural fertilizers for a long time and finds that the lignite extracting solution has great utilization value in the field of fertilizers.
Disclosure of Invention
The foliar fertilizer rich in organic acid and the preparation method thereof are provided for overcoming the defects of the prior art and based on the lignite extracting solution in the lignite drying and upgrading process. After being compounded, the raw materials have the functions of improving quality and enhancing efficiency of fertilizer efficiency.
The invention provides a foliar fertilizer rich in organic acid, which has the technical scheme that:
the foliar fertilizer rich in organic acid comprises the following compound raw materials in parts by weight: 800 parts of lignite extracting solution, 20-30 parts of monopotassium phosphate, 20-25 parts of urea, 5-8 parts of magnesium sulfate, 5-8 parts of ammonium molybdate, 5-8 parts of boric acid, 5-8 parts of zinc sulfate, 3-5 parts of copper sulfate and 2-3 parts of amine fresh grease.
Preferably, the foliar fertilizer comprises the following compound raw materials in parts by weight: 750 parts of lignite extracting solution, 20-30 parts of monopotassium phosphate, 20-25 parts of urea, 6-8 parts of magnesium sulfate, 6-8 parts of ammonium molybdate, 6-8 parts of boric acid, 6-8 parts of zinc sulfate, 3-5 parts of copper sulfate and 2-3 parts of amine fresh grease.
Preferably, the lignite extracting solution comprises organic acid, and the organic matter components comprise acid, lipid, phenol and nitrogen-containing heterocyclic compound.
Preferably, the content of acetic acid in the lignite extract is >100 mg/kg, measured by gas chromatography.
Preferably, the total acid (in terms of acetic acid) of the lignite extract is >600 mg/kg, the measurement method is a potentiometric titration method, and the lignite extract and water are mixed according to the weight ratio of 1: 250, the pH value after mixing is 4.0-6.0.
Preferably, the lignite extract is rated as practically non-toxic by acute oral toxicity classification criteria.
Preferably, the lignite extract comprises one or more of acetic acid, formic acid, propionic acid, butyric acid, 2, 4, 6-trimethylpyridine, benzyl alcohol, phenol, p-cresol, m-cresol, diethyl sulfite, 4-volkonyl butyrate acetyl ester, ethyl dichloroacetate, 2, 4, 5-trimethylpyridine, diethylene glycol, volkonyl acetone, 4-methylquinoline, 3-methylquinoline, 7-methylquinoline, p-volkonyl anisole, quinoline, isoquinoline, 2, 6-volkonyl copper phenelate, 2, 4-volkonyl copper phenelate, vinyl acetic acid or cyclopropanecarboxylic acid.
Preferably, the lignite extracting solution is obtained by condensing water smoke after lignite is upgraded by drying through high-temperature smoke.
The invention also provides a preparation method of the foliar fertilizer rich in organic acid, which comprises the following steps:
s1, preparing compound raw materials in parts by weight as follows: 800 parts of lignite extracting solution, 20-30 parts of monopotassium phosphate, 20-25 parts of urea, 5-8 parts of magnesium sulfate, 5-8 parts of ammonium molybdate, 5-8 parts of boric acid, 5-8 parts of zinc sulfate, 3-5 parts of copper sulfate and 2-3 parts of amine fresh fat;
s2, sequentially adding potassium dihydrogen phosphate and urea into the lignite extracting solution, completely dissolving, and obtaining a liquid a when the temperature reaches the room temperature;
s3, sequentially and respectively adding boric acid, magnesium sulfate, copper sulfate, zinc sulfate and ammonium molybdate into the liquid a, wherein when the next component is added, the previous component needs to be completely mixed and dissolved; obtaining a liquid b;
and S4, adding the amine fresh fat into the liquid b to obtain the foliar fertilizer.
Preferably, the preparation method of the lignite extracting solution comprises the following steps: the method comprises the following steps of leading powdery lignite and high-temperature hot air with low oxygen content into a cavity of a drying device in a cocurrent manner, depolymerizing and dispersing the powdery lignite at high speed in the drying device and directly contacting the powdery lignite with the hot air to perform high-efficiency heat exchange, arranging an induced draft fan at the tail end of an air outlet of the drying device to enable the cavity of the drying device to generate negative pressure, leading out water smoke in the drying device under the action of the negative pressure, and condensing the water smoke to obtain lignite extracting solution after dedusting the water smoke.
Preferably, the temperature of the hot air flow is 600-.
The implementation of the invention comprises the following technical effects:
the foliar fertilizer rich in organic acid can provide comprehensive nutrient elements for plant growth, regulate the immune system of plants, promote the plant growth, can be used in the whole growth cycle of crops, and has the advantages of cost reduction, efficiency improvement, simple preparation process and production cost reduction. The biological characters of crops can be obviously improved, the growth vigor and the growth phase are improved, and the plant height, the crown diameter and the weight average of single plants are obviously increased; can remarkably improve the yield of crops and has obvious benefits of increasing both production and income. After being compounded, the raw materials have the functions of improving quality and enhancing efficiency of fertilizer efficiency. The foliar liquid fertilizer is easy to be absorbed by plants, and is beneficial to sterilizing, expelling parasites, inhibiting plant diseases and insect pests, promoting the autoimmune system of the plants, strengthening roots, promoting seedlings, promoting the absorption of the plants, regulating the metabolism of the plants, and improving the quality and stress resistance of the crops; can be widely used for grain, vegetable, melon and fruit, tea, edible fungus, garden plant, Chinese herbal medicine and other economic crops.
According to the invention, the lignite extract contains rich organic acid, is compounded and applied, can provide comprehensive nutrient elements for plant growth, improve crop disease resistance, improve the content of nutrient substances of products, regulate the growth and development state of plants, increase the crop side root quantity, improve the utilization rate of fertilizers, reduce the usage amount of pesticides, improve crop stress resistance, improve crop yield, can be sprayed on leaf surfaces and micro-sprayed, can also be used as top dressing for roots, and is convenient to apply.
The lignite extracting solution is obtained by condensing water smoke after lignite is dried and upgraded by high-temperature smoke, lignite is complex in component and has available high-value components, a lot of natural substances such as organic acid are blended in dried water smoke due to the high-temperature effect of lignite, and the foliar fertilizer rich in the organic acid is prepared by compounding the lignite extracting solution and other components, so that the foliar fertilizer can promote root growth and plant growth, sterilize and expel insects, inhibit plant diseases and insect pests, promote plant absorption, regulate plant metabolism and have a synergistic effect in the aspect of improving crop quality.
The main compound raw materials of the invention utilize the lignite with high natural reserves as the raw material, the cost is low, and the lignite can be dehydrated and upgraded, and the coal with economic value can be obtained.
Detailed Description
The present invention will be described in detail with reference to the following examples, which are intended to facilitate the understanding of the present invention and should not be construed as limiting in any way.
Example 1
The preparation method of the foliar fertilizer rich in organic acid of the embodiment comprises the following steps:
s1, preparing compound raw materials in parts by weight as follows: 500 parts of lignite extracting solution, 20 parts of monopotassium phosphate, 20 parts of urea, 5 parts of magnesium sulfate, 5 parts of ammonium molybdate, 5 parts of boric acid, 5 parts of zinc sulfate, 3 parts of copper sulfate and 2 parts of amine fresh fat;
s2, sequentially adding potassium dihydrogen phosphate and urea into the lignite extracting solution, completely dissolving, and obtaining a liquid a when the temperature reaches the room temperature;
s3, sequentially and respectively adding boric acid, magnesium sulfate, copper sulfate, zinc sulfate and ammonium molybdate into the liquid a, wherein when the next component is added, the previous component needs to be completely mixed and dissolved; obtaining a liquid b;
s4, adding the amine fresh fat into the liquid b to obtain a foliar fertilizer;
and S5, packaging the foliar fertilizer and warehousing, and placing the foliar fertilizer in a shade place for storage.
It is noted that the feeding sequence and method of the fertilizer can ensure that the compounded raw materials do not influence each other.
Specifically, the preparation method of the lignite extracting solution comprises the following steps: the lignite raw material is crushed by the crusher and then conveyed to a vibrating screen through the scraper conveyor, and the vibrating screen screens out powdery lignite with set particle size; the method comprises the following steps of leading powdery lignite and high-temperature hot air with low oxygen content into a cavity of a drying device in a cocurrent manner, depolymerizing and dispersing the powdery lignite at high speed in the drying device and directly contacting the powdery lignite with the hot air to perform high-efficiency heat exchange, arranging an induced draft fan at the tail end of an air outlet of the drying device to enable the cavity of the drying device to generate negative pressure, leading out water smoke in the drying device under the action of the negative pressure, and condensing the water smoke to obtain lignite extracting solution after dedusting the water smoke. Furthermore, the lignite extracting solution is kept stand for later use after being kept stand for a period of time, water smoke can be condensed through a shift sprinkling technology, and the water smoke is condensed into liquid after flowing through a shift sprinkling plate. And discharging the dried lignite from the drying device to obtain the lignite high-efficiency coal powder. The temperature of the hot air flow is 600-1300 ℃, the oxygen content is less than 12 percent, and the negative pressure in the cavity of the drying device is 900-6000 Pa. According to the above description, the skilled person can select the existing lignite drying and upgrading equipment according to the above steps, and the details are not repeated herein.
The lignite extract comprises organic acid, and the organic matter comprises acid, lipid, phenol, nitrogen-containing heterocyclic compound and the like. The content of acetic acid in the lignite extracting solution is more than 100 mg/kg, and the measuring method is gas chromatography. The total acid (calculated by acetic acid) of the lignite extracting solution is more than 600 mg/kg, the measuring method is a potentiometric titration method, and the lignite extracting solution and water are mixed according to the weight ratio of 1: 250, the pH value after mixing is 4.0-6.0. The lignite extracting solution comprises one, more or all of acetic acid, formic acid, propionic acid, butyric acid, 2, 4, 6-trimethylpyridine, benzyl alcohol, phenol, p-cresol, m-cresol, diethyl sulfite, 4-volkonyl butyrate acetyl ester, ethyl dichloroacetate, 2, 4, 5-trimethylpyridine, diethylene glycol, volkonone, 4-methylquinoline, 3-methylquinoline, 7-methylquinoline, p-volkonyl anisole, quinoline, isoquinoline, 2, 6-volkonyl copper phenate, 2, 4-volkonyl copper phenate, vinyl acetic acid or cyclopropanecarboxylic acid. The lignite extracting solution is evaluated to be actually nontoxic through an acute oral toxicity grading standard.
Example 2
The preparation method of the foliar fertilizer rich in organic acid of the embodiment comprises the following steps:
s1, preparing compound raw materials in parts by weight as follows: 800 parts of lignite extracting solution, 30 parts of monopotassium phosphate, 25 parts of urea, 8 parts of magnesium sulfate, 8 parts of ammonium molybdate, 8 parts of boric acid, 8 parts of zinc sulfate, 5 parts of copper sulfate and 3 parts of amine fresh fat;
s2, sequentially adding potassium dihydrogen phosphate and urea into the lignite extracting solution, completely dissolving, and obtaining a liquid a when the temperature reaches the room temperature;
s3, sequentially and respectively adding boric acid, magnesium sulfate, copper sulfate, zinc sulfate and ammonium molybdate into the liquid a, wherein when the next component is added, the previous component needs to be completely mixed and dissolved; obtaining a liquid b;
s4, adding the amine fresh fat into the liquid b to obtain a foliar fertilizer;
and S5, packaging the foliar fertilizer and warehousing, and placing the foliar fertilizer in a shade place for storage.
It is noted that the feeding sequence and method of the fertilizer can ensure that the compounded raw materials do not influence each other.
Example 3
The preparation method of the foliar fertilizer rich in organic acid of the embodiment comprises the following steps:
s1, preparing compound raw materials in parts by weight as follows: 600 parts of lignite extracting solution, 25 parts of monopotassium phosphate, 23 parts of urea, 7 parts of magnesium sulfate, 7 parts of ammonium molybdate, 7 parts of boric acid, 7 parts of zinc sulfate, 4 parts of copper sulfate and 3 parts of amine fresh fat;
s2, sequentially adding potassium dihydrogen phosphate and urea into the lignite extracting solution, completely dissolving, and obtaining a liquid a when the temperature reaches the room temperature;
s3, sequentially and respectively adding boric acid, magnesium sulfate, copper sulfate, zinc sulfate and ammonium molybdate into the liquid a, wherein when the next component is added, the previous component needs to be completely mixed and dissolved; obtaining a liquid b;
s4, adding the amine fresh fat into the liquid b to obtain a foliar fertilizer;
and S5, packaging the foliar fertilizer and warehousing, and placing the foliar fertilizer in a shade place for storage.
It is noted that the feeding sequence and method of the fertilizer can ensure that the compounded raw materials do not influence each other.
Example 4
The preparation method of the foliar fertilizer rich in organic acid of the embodiment comprises the following steps:
s1, preparing compound raw materials in parts by weight as follows: 750 parts of lignite extracting solution, 25 parts of monopotassium phosphate, 23 parts of urea, 6 parts of magnesium sulfate, 6 parts of ammonium molybdate, 6 parts of boric acid, 6 parts of zinc sulfate, 4 parts of copper sulfate and 3 parts of amine fresh fat; only consists of the raw materials, and no other raw materials are added;
s2, sequentially adding potassium dihydrogen phosphate and urea into the lignite extracting solution, completely dissolving, and obtaining a liquid a when the temperature reaches the room temperature;
s3, sequentially and respectively adding boric acid, magnesium sulfate, copper sulfate, zinc sulfate and ammonium molybdate into the liquid a, wherein when the next component is added, the previous component needs to be completely mixed and dissolved; obtaining a liquid b;
s4, adding the amine fresh fat into the liquid b to obtain a foliar fertilizer;
and S5, packaging the foliar fertilizer and warehousing, and placing the foliar fertilizer in a shade place for storage.
It is noted that the feeding sequence and method of the fertilizer can ensure that the compounded raw materials do not influence each other.
The foliar fertilizer rich in organic acid obtained by the invention is subjected to a specific field application popularization test, and the result is as follows.
On the premise of consistent high yield cultivation management measures, the test adopts a random block arrangement test design, one foliar fertilizer treatment group rich in organic acid is arranged, two control groups (control 1 and control 2) are arranged, each group is repeated for three times, the results are averaged, the area of a cell is 20 square meters (2.00m multiplied by 10.00m), the planting row spacing is 20cm multiplied by 20cm, 500 plants are planted in each cell, 16667 raw vegetables are planted per mu, and protective rows are arranged on the periphery.
TABLE 1 biological and economic Properties of lettuce treated according to the invention and those treated according to the control
Table 2 real yield table of the cell treated by the present invention and the control example
TABLE 3 comparison of the least significant range of different process yields
TABLE 4 table of the yield and economic benefits of the inventive and comparative treatments
TABLE 5 lettuce quality tables treated according to the invention and the comparative example
In conclusion, based on habitual fertilization, the lettuce is taken as an example, and the organic acid-containing foliar fertilizer applied to the lettuce can obviously improve the biological properties of the lettuce, improve the growth vigor and growth phase, and obviously increase the plant height, the crown diameter and the weight average of single plants; can remarkably improve the yield of lettuce and has obvious benefits of increasing both production and income. The yield of the foliar fertilizer rich in organic acid is increased by 1095.32kg per mu compared with the foliar fertilizer rich in organic acid treated by clear water, the amplification is 24.10 percent, and the yield difference reaches an extremely obvious level; the net income increase of the fertilizer per mu is 1497.00 yuan compared with the conventional fertilizer application treatment, and the yield-input ratio is 4.27: 1.
According to the invention, the lignite extract contains rich organic acid, is applied by matching with a large amount of, medium amount of and trace elements of plants, can provide comprehensive nutrient elements for plant growth, improves crop disease resistance, improves product nutrient content, adjusts plant growth and development states, increases crop side root amount, improves fertilizer utilization rate, reduces pesticide usage amount, improves crop stress resistance, improves crop yield, can be sprayed on leaf surfaces and micro-sprayed, can also be used as root topdressing, and is convenient to apply.
The applicant tests the four embodiments of the invention on different crops, the effect is very obvious, and the invention can be widely used for grain, vegetable, melon and fruit, tea, edible fungi, garden plants, Chinese herbal medicine and other economic crops. The above describes a set of data for lettuce experiments to support the unexpected technical effect of the present invention.
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, 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. An organic acid-rich foliar fertilizer, which is characterized in that: the foliar fertilizer comprises the following compound raw materials in parts by weight: 800 parts of lignite extracting solution, 20-30 parts of monopotassium phosphate, 20-25 parts of urea, 5-8 parts of magnesium sulfate, 5-8 parts of ammonium molybdate, 5-8 parts of boric acid, 5-8 parts of zinc sulfate, 3-5 parts of copper sulfate and 2-3 parts of amine fresh grease.
2. The organic acid-rich foliar fertilizer of claim 1, wherein: the foliar fertilizer comprises the following compound raw materials in parts by weight: 750 parts of lignite extracting solution, 20-30 parts of monopotassium phosphate, 20-25 parts of urea, 6-8 parts of magnesium sulfate, 6-8 parts of ammonium molybdate, 6-8 parts of boric acid, 6-8 parts of zinc sulfate, 3-5 parts of copper sulfate and 2-3 parts of amine fresh grease.
3. The organic acid-rich foliar fertilizer according to claim 1 or 2, characterized in that: the lignite extracting solution comprises organic acid, and the organic matter components comprise acid, grease, phenol and nitrogen-containing heterocyclic compounds.
4. The organic acid-rich foliar fertilizer of claim 1, wherein: the content of acetic acid in the lignite extracting solution is more than 100 mg/kg, and the measuring method is gas chromatography.
5. The organic acid-rich foliar fertilizer of claim 1, wherein: the total acid of the lignite extracting solution is more than 600 mg/kg calculated by acetic acid, and the measuring method is a potentiometric titration method; mixing the lignite extract and water according to the weight ratio of 1: 250, the pH value after mixing is 4.0-6.0.
6. The organic acid-rich foliar fertilizer of claim 1, wherein: the lignite extracting solution comprises one or more of acetic acid, formic acid, propionic acid, butyric acid, 2, 4, 6-trimethylpyridine, benzyl alcohol, phenol, p-cresol, m-cresol, diethyl sulfite, 4-volkonyl butyrate acetyl ester, ethyl dichloroacetate, 2, 4, 5-trimethylpyridine, diethylene glycol, volkonone, 4-methylquinoline, 3-methylquinoline, 7-methylquinoline, p-vollyanisole, quinoline, isoquinoline, 2, 6-vollylphenyl copper, 2, 4-vollylphenyl copper, vinylacetic acid or cyclopropanecarboxylic acid.
7. The organic acid-rich foliar fertilizer according to any one of claims 1 to 6, wherein: the lignite extracting solution is liquid obtained by condensing water smoke after lignite is dried and upgraded by high-temperature smoke.
8. The preparation method of the foliar fertilizer rich in organic acid is characterized by comprising the following steps:
s1, preparing compound raw materials in parts by weight as follows: 800 parts of lignite extracting solution, 20-30 parts of monopotassium phosphate, 20-25 parts of urea, 5-8 parts of magnesium sulfate, 5-8 parts of ammonium molybdate, 5-8 parts of boric acid, 5-8 parts of zinc sulfate, 3-5 parts of copper sulfate and 2-3 parts of amine fresh fat;
s2, sequentially adding potassium dihydrogen phosphate and urea into the lignite extracting solution, completely dissolving, and obtaining a liquid a when the temperature reaches the room temperature;
s3, sequentially and respectively adding boric acid, magnesium sulfate, copper sulfate, zinc sulfate and ammonium molybdate into the liquid a, wherein when the next component is added, the previous component needs to be completely mixed and dissolved; obtaining a liquid b;
and S4, adding the amine fresh fat into the liquid b to obtain the foliar fertilizer.
9. The method for preparing the organic acid-rich foliar fertilizer of claim 8, wherein: the preparation method of the lignite extract comprises the following steps: the method comprises the following steps of leading powdery lignite and high-temperature hot air with low oxygen content into a cavity of a drying device in a cocurrent manner, depolymerizing and dispersing the powdery lignite at high speed in the drying device and directly contacting the powdery lignite with the hot air to perform high-efficiency heat exchange, arranging an induced draft fan at the tail end of an air outlet of the drying device to enable the cavity of the drying device to generate negative pressure, leading out water smoke in the drying device under the action of the negative pressure, and condensing the water smoke to obtain lignite extracting solution after dedusting the water smoke.
10. The method for preparing the organic acid-rich foliar fertilizer of claim 9, wherein: the temperature of the hot air flow is 600-1300 ℃, the oxygen content is less than 12 percent, and the negative pressure in the cavity of the drying device is 900-6000 Pa.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111548225A (en) * | 2020-06-15 | 2020-08-18 | 云南中翼鼎东投资集团生物科技开发有限公司 | Water-soluble fertilizer suitable for household green plants and preparation method thereof |
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| CN109090142A (en) * | 2018-08-13 | 2018-12-28 | 云南中翼鼎东能源科技开发有限公司 | The method and system of natural and multi-functional plant growth regulator are prepared using lignite |
| CN109503253A (en) * | 2018-11-21 | 2019-03-22 | 云南中翼鼎东能源科技开发有限公司 | A kind of natural biological medicine fertilizer, preparation method and its application method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109090142A (en) * | 2018-08-13 | 2018-12-28 | 云南中翼鼎东能源科技开发有限公司 | The method and system of natural and multi-functional plant growth regulator are prepared using lignite |
| CN109503253A (en) * | 2018-11-21 | 2019-03-22 | 云南中翼鼎东能源科技开发有限公司 | A kind of natural biological medicine fertilizer, preparation method and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111548225A (en) * | 2020-06-15 | 2020-08-18 | 云南中翼鼎东投资集团生物科技开发有限公司 | Water-soluble fertilizer suitable for household green plants and preparation method thereof |
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