CN111978121B - Humic acid plant nutrition powder and preparation method thereof - Google Patents
Humic acid plant nutrition powder and preparation method thereof Download PDFInfo
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- CN111978121B CN111978121B CN202010891477.9A CN202010891477A CN111978121B CN 111978121 B CN111978121 B CN 111978121B CN 202010891477 A CN202010891477 A CN 202010891477A CN 111978121 B CN111978121 B CN 111978121B
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
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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
- 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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
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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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Abstract
The invention provides humic acid plant nutrition powder and a preparation method thereof, wherein the nutrition powder comprises the following raw materials in parts by weight: 3-6 parts of humic acid; 10-15 parts of apatite powder; 15-30 parts of gamma-polyglutamic acid modified potassium feldspar powder; 3-6 parts of urea; 50-90 parts of white gourds extract/porous mineral composite powder; 30-55 parts of activated carbon powder. The preparation method comprises the following steps: weighing the raw materials according to the formula ratio; and then putting humic acid, apatite powder, gamma-polyglutamic acid modified potassium feldspar powder and activated carbon powder into a stirring tank, uniformly mixing, then putting into a grinding machine for grinding, and then adding urea and the white gourd extract/porous mineral composite powder and uniformly stirring. The nutrient powder prepared by the invention has rich nutrient components, can promote the growth of plants, effectively improves the content of available phosphorus in soil, and has excellent effects of increasing the yield of crops and improving the quality of the crops.
Description
Technical Field
The invention relates to the technical field of plant nutrition powder, in particular to humic acid plant nutrition powder and a preparation method thereof.
Background
Humic acid is a macromolecular organic substance widely existing in nature, and is widely applied to various fields of agriculture, forestry, pasturing, petroleum, chemical industry, building materials, medicine, health, environmental protection and the like. Particularly, ecological agricultural construction, pollution-free agricultural production, green food, pollution-free and environment-friendly properties and the like are advocated at present, and humic acid is highly advocated. It has been proved that human life and survival cannot be separated from humic acid.
Humic acid is a kind of organic matter which is produced and accumulated by remains of animals and plants, mainly remains of plants, through decomposition and transformation of microorganisms and a series of processes of geochemistry. Its total amount is surprisingly large, measured in trillions of tons. The river, lake and sea, soil coal mine and most of the earth surface have its trace. Due to its wide existence, it has great influence on the earth, and relates to carbon circulation, mineral migration and accumulation, soil fertility, ecological balance and other aspects. The total amount of humic acid contained in the soil is the largest, but the content of the humic acid is less than one percent on average, and the total amount contained in the brackish water is not small, but the concentration is lower. The most promising humic acid resources are low calorific value coals such as peat, lignite and weathered coal. Among them, the humic acid content is 10-80%.
With the development of agricultural production, particularly the continuous improvement of crop yield, a large amount of nitrogen, phosphorus and potassium fertilizers are applied, so that the ecological environment of soil is changed. The humic acid fertilizer prepared by combining with elements such as nitrogen, phosphorus, potassium and the like has the functions of fertilizer synergism, crop growth stimulation, agricultural product quality improvement and the like.
The domestic patent with application number not CN 201811278559.5 discloses a humic acid water-soluble fertilizer, which comprises humic acid, potassium chloride, monopotassium phosphate, urea ammonium nitrate, ammonium polyphosphate, boric acid, proline, a soil leavening agent and a porous nano material, wherein the particle size of the porous nano material is less than 10 mu m. The fertilizer disclosed by the invention not only comprises various organic elements such as N, K and P in common planting soil, but also is added with a soil leavening agent, so that a granular structure of the soil can be formed. The humic acid and the porous nano material are added, the porous nano material can enable the granular structure of the soil to be formed quickly, a certain shape is kept after the granular structure is formed, the shape is not easy to change, the humic acid can be dispersed in the granular structure quickly and adhered to the porous nano material, and the loss caused by rainwater is reduced.
However, when the above humic acid water-soluble fertilizers are chemical fertilizers containing elements such as nitrogen, phosphorus, and potassium, the fertilizers tend to deteriorate soil properties, cause plant wilting and root burning necrosis after long-term application, and cause environmental pollution to some extent.
At present, fertilizers, especially nitrogen fertilizers, applied by farmers are used in serious excess. Because of the long-term single application of the nitrogen fertilizer, the proportion of nitrogen and phosphorus in the soil is imbalanced, the soil is hardened, the physical and chemical properties are destroyed, and the yield increasing effect of the nitrogen fertilizer is reduced. In order to balance the proportion of nitrogen and phosphorus in the soil, the amount of phosphate fertilizer applied by farmers is also increased. However, because of the low utilization rate of phosphate fertilizers in China, phosphorus applied to soil is easily converted into adsorbed phosphorus and mineral phosphorus, such as insoluble inorganic phosphorus compounds, which are not easily absorbed and utilized by plants.
Disclosure of Invention
The invention aims to provide humic acid plant nutrient powder and a preparation method thereof, and the prepared nutrient powder is rich in nutrient components, can promote plant growth, effectively improves the content of available phosphorus in soil, and has excellent effects of increasing the yield of crops and improving the quality of the crops.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
preferably, the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
preferably, the humic acid is sodium humate, potassium humate or ammonium humate.
Preferably, P in the apatite powder 2 O 5 The mass fraction of (A) is 16-20%.
Preferably, the gamma-polyglutamic acid modified potassium feldspar powder is prepared by the following method:
(1) crushing and grinding the potassium feldspar, and sieving the ground potassium feldspar by a 200-mesh sieve to obtain potassium feldspar powder;
(2) preparing 0.02-0.05g/mL solution of gamma-polyglutamic acid, and mixing with potassium feldspar powder according to the proportion of 1: 1, standing for 10-16h at 30-35 ℃, drying in vacuum, and grinding to obtain the gamma-polyglutamic acid modified potassium feldspar powder.
Preferably, the white gourds extract/porous mineral composite powder is prepared by the following method: dissolving 1 part of the water white gourd extract by adopting water, uniformly mixing the water white gourd extract with 300 parts of the porous mineral powder material 200-35 ℃, standing for 2-3 days at 30-35 ℃, and naturally air-drying to obtain the water white gourd extract/porous mineral composite powder material.
Preferably, the white gourd extract is prepared by the following method: pulverizing fresh branches and leaves of fructus Benincasae, adding 10-15 times of water, and extracting at 70-80 deg.C for 60-90 min; then filtering, and concentrating the filtrate under reduced pressure to obtain the fructus Benincasae extract.
Preferably, the porous mineral powder is prepared by the following method: uniformly mixing 100 parts of diatomite, 30-40 parts of illite powder, 10-30 parts of zeolite powder, 5-10 parts of calcium oxide, 3-6 parts of plant ash and 15-20 parts of sodium hydroxypropyl cellulose, adding a proper amount of water, uniformly mixing, and then granulating to obtain particles with the particle size of 5-15 mm; calcining the obtained particles at 780-820 ℃ for 2-2.5 h; cooling to room temperature after calcining, and sieving with a 100-mesh sieve after crushing to obtain porous mineral powder.
Preferably, the activated carbon powder is rice hull activated carbon powder or coconut shell activated carbon powder.
The preparation method of the humic acid plant nutrition powder comprises the following steps:
weighing the raw materials according to the formula ratio; and then putting humic acid, apatite powder, gamma-polyglutamic acid modified potassium feldspar powder and activated carbon powder into a stirring tank, uniformly mixing, then putting into a grinding machine for grinding, and then adding urea and the white gourd extract/porous mineral composite powder and uniformly stirring.
The invention has the beneficial effects that:
1. according to the invention, a large amount of humic acid is added into the plant nutrition powder, so that the soil structure can be improved, the soil fertility is improved, the soil remediation effect is good, the soil has an excellent micro-ecological environment, the plant growth is facilitated, and the absorption of the nutrition components by the root systems of the plants is promoted.
2. On the basis of adding a large amount of humic acid, the added apatite powder contains a large amount of phosphorus elements, so that a large amount of phosphorus elements can be provided for the growth of plants, and meanwhile, the apatite powder can reduce the content of heavy metals such as copper, cadmium and the like in a soil solution, and has a certain effect on soil remediation.
3. According to the invention, the added gamma-polyglutamic acid is adsorbed by the potassium feldspar powder and can be slowly released into the soil, and one part of the gamma-polyglutamic acid forms a layer of film on the surface layer of plant root hair, so that the root hair can be protected, the close contact between nutrients and water in the soil and the root hair is facilitated, the crops can more effectively absorb trace elements in the soil, meanwhile, the gamma-polyglutamic acid in the soil can balance the acid-base value of the soil, the existence of available phosphorus is facilitated, and toxic heavy metals can be combined and precipitated. Furthermore, a part of gamma-polyglutamic acid can cause calcium ions in the apatite powder to enter the interlayer of the apatite powder, so that phosphorus supply reaction of the apatite powder is carried out in the direction of dissolving phosphorus, and effective phosphorus in soil is increased. After the potassium feldspar powder is modified by the gamma-polyglutamic acid, the potassium element in the potassium feldspar powder is released more easily, so that the effective potassium content in the soil is increased.
4. In the white gourds with the porous mineral composite powder, the white gourds with the porous mineral composite powder contain various root growth promoting factors, and the white gourds with the porous mineral composite powder can be slowly released into soil from the porous mineral composite powder, so that a certain effect is achieved on promoting the growth of plant root systems, and the plants can grow more vigorously. In addition, the porous mineral composite powder contains more pores, has good water and fertilizer retention effects, can increase the air permeability of soil, contains certain trace elements, is slowly released into the soil and promotes the growth of plants. The added active carbon can improve the physical and chemical properties of soil and the micro-ecological environment, and is beneficial to the soil to maintain the fertilizer efficiency.
5. The humic acid plant nutrition powder disclosed by the invention is rich in nutritional ingredients, can promote plant growth, effectively improves the content of available phosphorus in soil, and has excellent effects on increasing the yield of crops and improving the quality of the crops.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, but 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 humic acid plant nutrition powder comprises the following raw materials in parts by weight:
p in the apatite powder 2 O 5 Is 18.5 percent.
The gamma-polyglutamic acid modified potassium feldspar powder is prepared by the following method:
(1) crushing and grinding the potassium feldspar, and sieving by a 200-mesh sieve to obtain potassium feldspar powder;
(2) preparing 0.05g/mL solution of gamma-polyglutamic acid, and mixing with potassium feldspar powder according to the weight ratio of 1: 1, standing for 10 hours at the temperature of 30-35 ℃, drying in vacuum, and grinding to obtain the gamma-polyglutamic acid modified potassium feldspar powder.
The white gourd extract/porous mineral composite powder is prepared by the following method: dissolving 1 part of the water white gourd extract by adopting water, uniformly mixing the water white gourd extract with 300 parts of the porous mineral powder, standing for 3 days at the temperature of 30-35 ℃, and naturally air-drying to obtain the water white gourd extract/porous mineral composite powder.
The white gourd extract is prepared by the following steps: taking fresh branches and leaves of white gourd as raw materials, pulverizing, adding 12 times of water, extracting at 70-75 deg.C for 80 min; then filtering, and concentrating the filtrate under reduced pressure to obtain the fructus Benincasae extract.
The porous mineral powder is prepared by the following method: uniformly mixing 100 parts of diatomite, 40 parts of illite powder, 30 parts of zeolite powder, 5 parts of calcium oxide, 5 parts of plant ash and 15 parts of hydroxypropyl cellulose sodium, adding a proper amount of water, uniformly mixing, and then granulating to obtain granules with the particle size of 5-15 mm; calcining the obtained particles at 820 ℃ for 2 h; cooling to room temperature after calcining, and sieving with a 100-mesh sieve after crushing to obtain porous mineral powder.
The preparation method of the humic acid plant nutrition powder comprises the following steps:
weighing the raw materials according to the formula ratio; and then, uniformly mixing humic acid, apatite powder, gamma-polyglutamic acid modified potassium feldspar powder and activated carbon powder in a stirring tank, then grinding in a grinding machine, and then adding urea and the wax gourd extract/porous mineral composite powder and uniformly stirring.
Example 2:
the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
p in apatite powder 2 O 5 Is 20 percent.
The gamma-polyglutamic acid modified potassium feldspar powder is prepared by the following method:
(1) crushing and grinding the potassium feldspar, and sieving the ground potassium feldspar by a 200-mesh sieve to obtain potassium feldspar powder;
(2) preparing 0.03g/mL solution of gamma-polyglutamic acid, and mixing with potassium feldspar powder according to the proportion of 1: 1, standing for 16h at 30-35 ℃, drying in vacuum, and grinding to obtain the gamma-polyglutamic acid modified potassium feldspar powder.
The white gourd extract/porous mineral composite powder is prepared by the following method: dissolving 1 part of the wax gourd extract by water, mixing the dissolved extract with 240 parts of the porous mineral powder uniformly, standing the mixture for 3 days at the temperature of between 30 and 35 ℃, and then naturally drying the mixture to obtain the wax gourd extract/porous mineral composite powder.
The white gourd extract is prepared by the following steps: pulverizing fresh branches and leaves of Benincasa hispida, adding 10 times of water, and extracting at 75-80 deg.C for 60 min; then filtering, and concentrating the filtrate under reduced pressure to obtain the fructus Benincasae extract.
The porous mineral powder is prepared by the following method: uniformly mixing 100 parts of diatomite, 35 parts of illite powder, 20 parts of zeolite powder, 6 parts of calcium oxide, 6 parts of plant ash and 20 parts of hydroxypropyl cellulose sodium, adding a proper amount of water, uniformly mixing, and then granulating to obtain granules with the particle size of 5-15 mm; calcining the obtained particles at 800 ℃ for 2 h; cooling to room temperature after calcining, and sieving with a 100-mesh sieve after crushing to obtain porous mineral powder.
The preparation method of the humic acid plant nutrition powder is the same as that of the example 1.
Example 3:
the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
p in apatite powder 2 O 5 Is 18.5 percent.
The gamma-polyglutamic acid modified potassium feldspar powder is prepared by the following method:
(1) crushing and grinding the potassium feldspar, and sieving the ground potassium feldspar by a 200-mesh sieve to obtain potassium feldspar powder;
(2) preparing 0.02g/mL solution of gamma-polyglutamic acid, and mixing with potassium feldspar powder according to the weight ratio of 1: 1, standing for 16h at 30-35 ℃, drying in vacuum, and grinding to obtain the gamma-polyglutamic acid modified potassium feldspar powder.
The white gourd extract/porous mineral composite powder is prepared by the following method: dissolving 1 part of the water white gourd extract by adopting water, uniformly mixing the water white gourd extract with 200 parts of the porous mineral powder, standing for 2 days at the temperature of 30-35 ℃, and naturally air-drying to obtain the water white gourd extract/porous mineral composite powder.
The white gourd extract is prepared by the following steps: taking fresh branches and leaves of the wax gourd as raw materials, crushing the raw materials, adding water with the amount of 15 times of the weight of the raw materials, and extracting at 75-80 ℃ for 90 min; then filtering, and concentrating the filtrate under reduced pressure to obtain the fructus Benincasae extract.
The porous mineral powder is prepared by the following method: uniformly mixing 100 parts of diatomite, 30 parts of illite powder, 10 parts of zeolite powder, 10 parts of calcium oxide, 3 parts of plant ash and 18 parts of hydroxypropyl cellulose sodium, adding a proper amount of water, uniformly mixing, and then granulating to obtain granules with the particle size of 5-15 mm; calcining the obtained particles at 780-82 ℃ for 2.5 h; cooling to room temperature after calcining, and sieving with a 100-mesh sieve after crushing to obtain porous mineral powder.
The preparation method of the humic acid plant nutrition powder is the same as that of the example 1.
Example 4:
the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
p in apatite powder 2 O 5 Is 16 percent.
The preparation method of gamma-polyglutamic acid modified potassium feldspar powder is the same as that in example 2.
The preparation method of the white gourd extract/porous mineral composite powder is the same as that of example 2.
The preparation method of the humic acid plant nutrition powder is the same as that of the example 1.
Example 5:
the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
p in apatite powder 2 O 5 Is 18.5 percent.
The preparation method of gamma-polyglutamic acid modified potassium feldspar powder is the same as that in example 3.
The preparation method of the white gourd extract/porous mineral composite powder is the same as that of example 3.
The preparation method of the humic acid plant nutrition powder is the same as that of the example 1.
Example 6:
the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
p in apatite powder 2 O 5 Is 16 percent.
The preparation method of gamma-polyglutamic acid modified potassium feldspar powder is the same as that of example 1.
The preparation method of the white gourd extract/porous mineral composite powder is the same as that of example 1.
The preparation method of the humic acid plant nutrition powder is the same as that of the example 1.
Comparative example 1:
the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
p in the apatite powder 2 O 5 Is 18.5 percent.
The preparation method of the white gourd extract/porous mineral composite powder is the same as that of example 1.
Humic acid plant nutrient powder preparation method reference example 1.
Comparative example 2:
the humic acid plant nutrition powder comprises the following raw materials in parts by weight:
p in the apatite powder 2 O 5 Is 18.5 percent.
The preparation method of gamma-polyglutamic acid modified potassium feldspar powder is the same as that of example 1.
The preparation of the porous mineral powder was carried out as in example 1.
Humic acid plant nutrient powder preparation method reference is made to example 1.
Planting test:
carrot planting is carried out on a certain planting base, a soil sample of 0-30cm of the planting base is collected, and the basic physicochemical properties of the soil sample are shown in table 1.
Table 1:
6 planting test groups are arranged, and the planting area of each planting test group is 12m 2 Applying the humic acid plant nutrient powder in the examples 1-3 to the planting fields of the planting test groups 1-3; applying the humic acid plant nutrient powder in the comparative examples 1-2 to the planting fields of the planting test groups 4-5; and (3) applying the nitrogen-phosphorus-potassium ternary compound fertilizer in the planting field of the planting test group 6. Each treatment was repeated 3 times.
The application method of the humic acid plant nutrient powder and the ternary compound fertilizer in the planting test groups 1-6 comprises the following steps: applying the humic acid plant nutrient powder corresponding to the planting test groups 1-3 to planting fields according to 100 kg/mu; applying humic acid plant nutrient powder corresponding to the planting test groups 4-5 to a planting field according to 100 kg/mu; the nitrogen-phosphorus-potassium ternary compound fertilizer corresponding to the planting test group 6 is applied to the planting field according to the proportion of 25 kg/mu.
After the treatment, ploughing and preparing land, and planting the carrots according to a conventional method. In the full growth period of the leaves, performing first topdressing, and applying 30 kg/mu of corresponding humic acid plant nutrient powder to the planting test groups 1-3; the planting test group 4-5 applies 30 kg/mu of corresponding humic acid plant nutrition powder; the planting test group 6 applies 10 kg/mu of corresponding nitrogen phosphorus potassium ternary compound fertilizer.
Other field management (irrigation drainage, weeding and the like) is consistent with various plant test groups.
After the carrots are harvested, the per mu yield of the carrots in the planting test groups 1-6 is counted, and the disease incidence rate of black rot is calculated. Specific results are shown in table 2.
Table 2:
| yield per kg per mu | Incidence of black rot/%) | |
| Planting test group 1 | 4930 | 2.6 |
| Planting test group 2 | 4836 | 2.8 |
| Planting test group 3 | 4811 | 2.5 |
| Plant test group 4 | 4530 | 3.2 |
| Planting test group 5 | 4410 | 3.6 |
| Planting test group 6 | 4003 | 5.2 |
Meanwhile, the carotene content of carrots was measured, and the nuisance-free vegetable grade of carrots was judged, and the results are shown in table 3.
Table 3:
| carotene content/(mg/100 g) | Nuisance free vegetable grade | |
| Planting test group 1 | 5.32 | Grade AA |
| Planting test group 2 | 5.28 | Grade AA |
| Planting test group 3 | 5.29 | Grade AA |
| Plant test group 4 | 5.13 | Grade AA |
| Planting test group 5 | 5.19 | Grade AA |
| Plant test group 6 | 4.75 | Class A |
As can be seen from tables 2 to 3, the humic acid plant nutrient powders of examples 1 to 3 of the present invention have a better effect of improving the yield and quality of carrots than conventional chemical fertilizers. Compared with the planting test group 1, the planting test group 4 and the planting test group 5, the potassium feldspar powder is modified by the gamma-polyglutamic acid, and the porous mineral composite powder adsorbs the white gourd extract, so that the growth of the plants is promoted, the disease resistance of the plants can be improved, and the disease rate is reduced.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. The humic acid plant nutrition powder is characterized by comprising the following raw materials in parts by weight:
3-6 parts of humic acid;
10-15 parts of apatite powder;
15-30 parts of gamma-polyglutamic acid modified potassium feldspar powder;
3-6 parts of urea;
50-90 parts of white gourd extract/porous mineral composite powder;
30-55 parts of activated carbon powder;
the humic acid is sodium humate, potassium humate or ammonium humate;
p in the apatite powder 2 O 5 The mass fraction of (A) is 16-20%;
the gamma-polyglutamic acid modified potassium feldspar powder is prepared by the following method:
(1) crushing and grinding the potassium feldspar, and sieving the ground potassium feldspar by a 200-mesh sieve to obtain potassium feldspar powder;
(2) preparing 0.02-0.05g/mL solution of gamma-polyglutamic acid, and mixing with potassium feldspar powder according to the proportion of 1: 1, standing for 10-16 hours at 30-35 ℃, drying in vacuum, and grinding to obtain gamma-polyglutamic acid modified potassium feldspar powder;
the white gourds extract/porous mineral composite powder is prepared by the following method: dissolving 1 part of the water white gourd extract by adopting water, uniformly mixing the water white gourd extract with 300 parts of 200-35-part porous mineral powder, standing for 2-3 days at 30-35 ℃, and naturally air-drying to obtain the water white gourd extract/porous mineral composite powder;
the white gourd extract is prepared by the following steps: pulverizing fresh branches and leaves of fructus Benincasae, adding 10-15 times of water, and extracting at 70-80 deg.C for 60-90 min; then filtering, and concentrating the filtrate under reduced pressure to obtain fructus Benincasae extract;
the porous mineral powder is prepared by the following method: uniformly mixing 100 parts of diatomite, 30-40 parts of illite powder, 10-30 parts of zeolite powder, 5-10 parts of calcium oxide, 3-6 parts of plant ash and 15-20 parts of sodium hydroxypropyl cellulose, adding a proper amount of water, uniformly mixing, and then granulating to obtain granules with the particle size of 5-15 mm; calcining the obtained particles at 780-820 ℃ for 2-2.5 h; cooling to room temperature after calcining, and sieving with a 100-mesh sieve after crushing to obtain porous mineral powder;
the activated carbon powder is rice hull activated carbon powder or coconut shell activated carbon powder.
2. The humic acid plant nutrition powder of claim 1, which is prepared from the following raw materials in parts by weight:
5 parts of humic acid;
12 parts of apatite powder;
22 parts of gamma-polyglutamic acid modified potassium feldspar powder;
4 parts of urea;
65 parts of white gourd extract/porous mineral composite powder;
45 parts of activated carbon powder.
3. A method of preparing humic acid plant nutrient powder according to claim 1 or 2, comprising the steps of:
weighing the raw materials according to the formula ratio; and then, uniformly mixing humic acid, apatite powder, gamma-polyglutamic acid modified potassium feldspar powder and activated carbon powder in a stirring tank, then grinding in a grinding machine, and then adding urea and the wax gourd extract/porous mineral composite powder and uniformly stirring.
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| CN103254009A (en) * | 2013-05-20 | 2013-08-21 | 深圳市芭田生态工程股份有限公司 | Gamma-polyglutamic acid slow-release preparation, preparation method and application thereof |
| CN104355911A (en) * | 2014-11-26 | 2015-02-18 | 赤峰杰健科技有限公司 | Compound fertilizer for saline-alkaline lands and preparation method thereof |
| CN108101719A (en) * | 2018-03-06 | 2018-06-01 | 河北百禾丰化肥有限公司 | A kind of high activity activation humic acid fertilizer and preparation method thereof |
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