CN110668886A - Sterilization type water-soluble fertilizer and preparation method thereof - Google Patents
Sterilization type water-soluble fertilizer and preparation method thereof Download PDFInfo
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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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 discloses a sterilization type water-soluble fertilizer and a preparation method thereof, and belongs to the technical field of fertilizers. The fertilizer is prepared by combining a nutrition base material and a sterilization composite material according to the mass ratio of 10:1, wherein the nutrition base material is prepared by taking urea, monopotassium phosphate, borax and trace elements as raw materials; the sterilization composite material is prepared by taking nano-silver colloid, a surfactant, chitosan and a synergist as raw materials. The basic nutrient substances provide enough NPK and medium trace elements for the growth of crops, and ensure the nutrient supply of the crops at each stage of growth. The effective sterilization compound takes nano-silver colloid and chitosan as main sterilization active substances, and is supplemented with components such as a surfactant, a synergist and the like, so that the occurrence of crop diseases and insect pests is effectively inhibited, and the yield and the quality of crops are improved. The fertilizer has scientific formula, simple preparation process and wide practical application value.
Description
Technical Field
The invention belongs to the technical field of fertilizers, and particularly relates to a sterilization type water-soluble fertilizer and a preparation method thereof.
Background
With the improvement of living standard of people and the enhancement of ecological environment protection and self health protection consciousness, the demand of people on safe, sanitary and clean agricultural products is increasing. Especially, the use of a large amount of chemical fertilizers and toxic pesticides in agricultural production leads to the input of a large amount of agricultural chemical substances into farmlands, which not only causes the quality of crops to be reduced and further influences the commodity of the crops, but also leads to the food pollution caused by the fact that harmful chemical substances are greatly enriched in organisms through soil and water and enter the crops and livestock through food chains, and seriously influences the human health. Therefore, the method reduces the input of chemical fertilizers and pesticides, enhances the stress resistance of crops, increases the input-output ratio, comprehensively improves the quality safety level of agricultural products, improves the yield and enhances the competitiveness of the agricultural products, and becomes an extremely important task in the current agricultural development.
The planting of economic crops requires effective prevention and control of plant diseases and insect pests, and simultaneously has high quality and large yield. However, soil-borne diseases, seed-borne diseases and the like cannot be effectively controlled, so continuous cropping and planting cannot be performed during planting, and the quality of crops is continuously reduced. Chinese patent publication No. CN102249800A, publication No. 2011, 11/23, entitled: the invention relates to a bactericidal fertilizer and a manufacturing and application method thereof, wherein the fertilizer comprises the raw materials of soluble nitrogen phosphorus potassium fertilizer, inorganic substances containing trace elements, magnesium salts, complex calcium salts, organic carbon source compounds, silver agents, soluble amino acids and auxiliary agents. The disadvantages are as follows: the silver is added into the fertilizer component by adopting nano silver or complex silver or nano colloid thereof, and agglomeration cannot be avoided due to the characteristics of nano materials; on the other hand, nano silver is easily oxidized to lose the silver characteristics, both of which result in a decrease in the sterilization performance of the product.
The water-soluble fertilizer is a quick-acting fertilizer, has the advantages of good solubility and capability of being directly absorbed and utilized by root systems and leaf surfaces of crops, and has the effective absorption rate which is more than one time higher than that of the common fertilizer and reaches 80-90 percent. The biological bacteria water-soluble fertilizer formed by adding humic acid substances, microbial agents and plant growth regulators on the basis of containing major elements such as nitrogen, phosphorus, potassium and the like has the advantages of the major element water-soluble fertilizer and may also have the special functions of the microbial agents and the plant growth regulators. The various advantages of water soluble fertilizers are receiving increasing market attention. Therefore, the development of a fertilizer which has a bactericidal effect, can promote the growth of crops, improves the yield and has potential market value as a quality fertilizer.
Disclosure of Invention
The invention provides a sterilization type water-soluble fertilizer which can effectively control plant diseases and insect pests, improve crop yield and quality and improve soil environment. Meanwhile, the invention further discloses a preparation method of the fertilizer. The technical scheme adopted by the invention is as follows:
the bactericidal water-soluble fertilizer is prepared by combining a nutrition base material and a bactericidal composite material according to a mass ratio of 10:1, wherein the nutrition base material is prepared from the following raw materials in parts by weight: 80-100 parts of urea, 60-90 parts of monopotassium phosphate, 15-25 parts of borax and 2-6 parts of trace elements; the sterilization composite material is prepared from the following raw materials in parts by weight: the sterilization composite material is prepared from the following raw materials in parts by weight: 5-10 parts of nano-silver colloid, 1-3 parts of surfactant, 1-3 parts of chitosan and 0.5-1.5 parts of synergist; the nano silver colloid is prepared by the following method: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain the nano silver colloid with the average particle size of 10-30 nm.
The trace elements comprise 3 to 6 parts of zinc, 0.1 to 0.5 part of boron, 0.3 to 0.7 part of copper, 0.3 to 0.7 part of iron, 0.2 to 0.5 part of manganese and 0.1 to 0.5 part of molybdenum by weight.
The surfactant is a mixture of sodium dodecyl sulfate and fatty glyceride, wherein the mass ratio of the sodium dodecyl sulfate to the fatty glyceride is 1: 0.5-2.5.
The synergist is prepared by mixing houttuynia cordata extract and bamboo vinegar according to the weight ratio of 1:2-5, and the houttuynia cordata extract is prepared by the following method: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; the pH of the bamboo vinegar solution is 2-4.
A preparation method of a sterilization type water soluble fertilizer comprises the following steps:
(1) weighing the components in the nutrition base material according to the proportion, drying and crushing at 80 ℃ to 100-mesh and 200-mesh powder to obtain a fine powder mixture of the nutrition base material;
(2) preparing nano silver colloid: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain nano silver colloid with average particle size of 10-30 nm;
(3) preparing a synergist: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; mixing the houttuynia cordata extract and the bamboo vinegar liquid according to the weight ratio of 1:2-5 to obtain a synergist;
(4) uniformly mixing nano-silver colloid, a surfactant, chitosan and a synergist according to a ratio, and then freeze-drying to obtain a powder mixture;
(5) and (3) uniformly stirring and mixing the nutrient base material fine powder obtained in the step (1) and the powder obtained in the step (4), and then vacuum packaging and warehousing to obtain the fertilizer.
When the fertilizer is applied, the fertilizer and water are dissolved according to the mass ratio of 1:50 and then used.
The application method of the sterilization type fertilizer can be divided into the following two types:
(1) irrigating roots, spraying soil, being beneficial to preventing and treating root diseases such as root rot and rotting of crops, simultaneously adjusting soil structure and improving soil environment;
(2) the foliar fertilizer is sprayed on the foliage of crops in the growing period, is beneficial to killing various germs on the foliage of the crops, reduces the diseased plant rate and improves the yield and the quality of the crops.
Has the advantages that:
the invention provides a sterilization type water soluble fertilizer and a preparation method thereof. The basic nutrient substances provide enough NPK and medium trace elements for the growth of crops, and ensure the nutrient supply of the crops at each stage of growth. The effective sterilization compound takes nano-silver colloid and chitosan as main sterilization active substances, and is supplemented with components such as a surfactant, a synergist and the like, wherein the houttuynia cordata is a Chinese herbal medicine with sterilization and bacteriostasis effects, and the active components of the effective sterilization compound have inhibition effects on various microorganisms. The bamboo vinegar is a light yellow liquid generated in the carbonization and pyrolysis processes of the bamboo, and has unique smoking fragrance. The bamboo vinegar has complex composition, mainly contains water (about 80%), and organic acid, phenols, alcohols, etc. The organic components in the bamboo vinegar can help bacteriostatic substances such as nano-silver colloid, chitosan and the like deeply permeate on the surface and the inside of the plant, so that the prevention and treatment effect is enhanced. The two are mutually matched to promote the bactericide of the invention to exert the sterilization effect, and simultaneously the bamboo vinegar also has the functions of promoting the germination, rooting and growth of crop seeds and improving the crop yield. The raw materials are mutually matched to promote the realization of the fertilizer efficiency of the fertilizer.
Detailed Description
The technical solution of the present invention is further described below with reference to specific embodiments, but is not limited thereto.
Example 1
The bactericidal water-soluble fertilizer is prepared by combining a nutrition base material and a bactericidal composite material according to a mass ratio of 10:1, wherein the nutrition base material is prepared from the following raw materials in parts by weight: 80 parts of urea, 60 parts of monopotassium phosphate, 15 parts of borax and 2 parts of trace elements; the sterilization composite material is prepared from the following raw materials in parts by weight: the sterilization composite material is prepared from the following raw materials in parts by weight: 5-10 parts of nano-silver colloid, 1 part of surfactant, 1 part of chitosan and 0.5 part of synergist; the nano silver colloid is prepared by the following method: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain the nano silver colloid with the average particle size of 10-30 nm.
The trace elements comprise 3 parts of zinc, 0.1 part of boron, 0.3 part of copper, 0.3 part of iron, 0.2 part of manganese and 0.1 part of molybdenum by weight.
The surfactant is a mixture of sodium dodecyl sulfate and fatty acid glyceride, wherein the mass ratio of the sodium dodecyl sulfate to the fatty acid glyceride is 1: 0.5.
The synergist is prepared by mixing houttuynia cordata extract and bamboo vinegar according to the weight ratio of 1:2, and the houttuynia cordata extract is prepared by the following method: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; the pH of the bamboo vinegar solution is 2-4.
A preparation method of a sterilization type water soluble fertilizer comprises the following steps:
(1) weighing the components in the nutrition base material according to the proportion, drying and crushing at 80 ℃ to 100-mesh and 200-mesh powder to obtain a fine powder mixture of the nutrition base material;
(2) preparing nano silver colloid: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain nano silver colloid with average particle size of 10-30 nm;
(3) preparing a synergist: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; mixing the houttuynia cordata extract and the bamboo vinegar liquid according to the weight ratio of 1:2 to obtain a synergist;
(4) uniformly mixing nano-silver colloid, a surfactant, chitosan and a synergist according to a ratio, and then freeze-drying to obtain a powder mixture;
(5) and (3) uniformly stirring and mixing the nutrient base material fine powder obtained in the step (1) and the powder obtained in the step (4), and then vacuum packaging and warehousing to obtain the fertilizer.
When the fertilizer is applied, the fertilizer and water are dissolved according to the mass ratio of 1:50 and then used.
Example 2
The bactericidal water-soluble fertilizer is prepared by combining a nutrition base material and a bactericidal composite material according to a mass ratio of 10:1, wherein the nutrition base material is prepared from the following raw materials in parts by weight: 90 parts of urea, 75 parts of monopotassium phosphate, 20 parts of borax and 4 parts of trace elements; the sterilization composite material is prepared from the following raw materials in parts by weight: the sterilization composite material is prepared from the following raw materials in parts by weight: 8 parts of nano-silver colloid, 2 parts of surfactant, 2 parts of chitosan and 1 part of synergist; the nano silver colloid is prepared by the following method: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain the nano silver colloid with the average particle size of 10-30 nm.
The trace elements comprise 5 parts of zinc, 0.3 part of boron, 0.5 part of copper, 0.5 part of iron, 0.4 part of manganese and 0.3 part of molybdenum by weight.
The surfactant is a mixture of sodium dodecyl sulfate and fatty glyceride, wherein the mass ratio of the sodium dodecyl sulfate to the fatty glyceride is 1: 1.5.
The synergist is prepared by mixing houttuynia cordata extract and bamboo vinegar according to the weight ratio of 1:3, and the houttuynia cordata extract is prepared by the following method: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; the pH of the bamboo vinegar solution is 2-4.
A preparation method of a sterilization type water soluble fertilizer comprises the following steps:
(1) weighing the components in the nutrition base material according to the proportion, drying and crushing at 80 ℃ to 100-mesh and 200-mesh powder to obtain a fine powder mixture of the nutrition base material;
(2) preparing nano silver colloid: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain nano silver colloid with average particle size of 10-30 nm;
(3) preparing a synergist: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; mixing the houttuynia cordata extract and the bamboo vinegar liquid according to the weight ratio of 1:3 to obtain a synergist;
(4) uniformly mixing nano-silver colloid, a surfactant, chitosan and a synergist according to a ratio, and then freeze-drying to obtain a powder mixture;
(5) and (3) uniformly stirring and mixing the nutrient base material fine powder obtained in the step (1) and the powder obtained in the step (4), and then vacuum packaging and warehousing to obtain the fertilizer.
When the fertilizer is applied, the fertilizer and water are dissolved according to the mass ratio of 1:50 and then used.
Example 3
The bactericidal water-soluble fertilizer is prepared by combining a nutrition base material and a bactericidal composite material according to a mass ratio of 10:1, wherein the nutrition base material is prepared from the following raw materials in parts by weight: 80-100 parts of urea, 90 parts of monopotassium phosphate, 25 parts of borax and 6 parts of trace elements; the sterilization composite material is prepared from the following raw materials in parts by weight: the sterilization composite material is prepared from the following raw materials in parts by weight: 10 parts of nano-silver colloid, 3 parts of surfactant, 3 parts of chitosan and 1.5 parts of synergist; the nano silver colloid is prepared by the following method: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain the nano silver colloid with the average particle size of 10-30 nm.
The trace elements comprise 6 parts of zinc, 0.5 part of boron, 0.7 part of copper, 0.7 part of iron, 0.5 part of manganese and 0.5 part of molybdenum by weight.
The surfactant is a mixture of sodium dodecyl sulfate and fatty glyceride, wherein the mass ratio of the sodium dodecyl sulfate to the fatty glyceride is 1: 2.5.
The synergist is prepared by mixing houttuynia cordata extract and bamboo vinegar according to the weight ratio of 1:5, and the houttuynia cordata extract is prepared by the following method: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; the pH of the bamboo vinegar solution is 2-4.
A preparation method of a sterilization type water soluble fertilizer comprises the following steps:
(1) weighing the components in the nutrition base material according to the proportion, drying and crushing at 80 ℃ to 100-mesh and 200-mesh powder to obtain a fine powder mixture of the nutrition base material;
(2) preparing nano silver colloid: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain nano silver colloid with average particle size of 10-30 nm;
(3) preparing a synergist: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; mixing the houttuynia cordata extract and the bamboo vinegar liquid according to the weight ratio of 1:5 to obtain a synergist;
(4) uniformly mixing nano-silver colloid, a surfactant, chitosan and a synergist according to a ratio, and then freeze-drying to obtain a powder mixture;
(5) and (3) uniformly stirring and mixing the nutrient base material fine powder obtained in the step (1) and the powder obtained in the step (4), and then vacuum packaging and warehousing to obtain the fertilizer.
When the fertilizer is applied, the fertilizer and water are dissolved according to the mass ratio of 1:50 and then used.
Comparative example 1
The formulation and preparation method of this example are the same as example 3 except that the addition and preparation of the nano-silver colloid are not included.
Comparative example 2
The formulation and preparation of this example are the same as example 3 except that chitosan is not added.
Comparative example 3
The formulation and preparation of this example are the same as example 3 except that no synergist is added and prepared.
Application test
The experiment was carried out in 2018 in a vegetable greenhouse from 15 th to 20 th of 9 th to 11 th of 20 th of Linyi City, Shandong province.
And (3) testing radish varieties: fruit and greengrocery radish.
Basic physicochemical properties of the tested soil: the content of alkaline hydrolysis nitrogen is 58.4238 mg/kg-116.03 g/kg of organic matter-1Total nitrogen 0.85 g.kg-115.98 mg/kg of available phosphorus-1Quick-acting potassium 101.22 mg/kg-1。
Fertilizer to be tested: fertilizers obtained in examples 1-3 of the present invention and fertilizers obtained in comparative examples 1-3.
The experiment is divided into 7 test groups, each test group is applied with 50 kg/mu of fertilizer, and other conditions are the same. The data of radish yield, radish quality and the like are counted and are shown in the following table:
| single plant weight (g) | Vc content (mg/kg) | Yield (kg/mu) | Disease incidence (%) | |
| Example 1 | 225.2 | 160 | 4523 | 5％ |
| Example 2 | 230.5 | 162 | 4623 | 4％ |
| Example 3 | 235.6 | 170 | 4896 | 4％ |
| Comparative example 1 | 186.2 | 142 | 3803 | 15％ |
| Comparative example 2 | 179.3 | 150 | 3906 | 12％ |
| Comparative example 3 | 190.5 | 145 | 3922 | 10％ |
| Blank example | 150.6 | 130 | 2912 | 18％ |
According to experimental data, the radish yield is high and the Vc content is high by applying the fertilizer disclosed by the embodiment of the invention; the radish of the comparative example and the blank (without applying any fertilizer) has reduced yield and quality. Therefore, the nano-silver colloid, the chitosan and the synergist of the invention have weak effects in the absence of one element, and the fertilizer effect of the invention is ensured together.
It should be noted that the above-mentioned embodiments are only some of the preferred modes for implementing the invention, and not all of them. Obviously, all other embodiments obtained by persons of ordinary skill in the art based on the above-mentioned embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
Claims (5)
1. The bactericidal water-soluble fertilizer is characterized by being prepared by combining a nutritional base material and a bactericidal composite material according to a mass ratio of 10:1, wherein the nutritional base material is prepared from the following raw materials in parts by weight: 80-100 parts of urea, 60-90 parts of monopotassium phosphate, 15-25 parts of borax and 2-6 parts of trace elements; the sterilization composite material is prepared from the following raw materials in parts by weight: the sterilization composite material is prepared from the following raw materials in parts by weight: 5-10 parts of nano-silver colloid, 1-3 parts of surfactant, 1-3 parts of chitosan and 0.5-1.5 parts of synergist; the nano silver colloid is prepared by the following method: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain the nano silver colloid with the average particle size of 10-30 nm.
2. The bactericidal water-soluble fertilizer as claimed in claim 1, wherein the trace elements comprise 3 to 6 parts by weight of zinc, 0.1 to 0.5 part by weight of boron, 0.3 to 0.7 part by weight of copper, 0.3 to 0.7 part by weight of iron, 0.2 to 0.5 part by weight of manganese and 0.1 to 0.5 part by weight of molybdenum.
3. The bactericidal water-soluble fertilizer as claimed in claim 1, wherein the surfactant is a mixture of sodium dodecyl sulfate and fatty glyceride, and the mass ratio of the sodium dodecyl sulfate to the fatty glyceride is 1: 0.5-2.5.
4. The bactericidal water-soluble fertilizer as claimed in claim 1, wherein the synergist is prepared by mixing houttuynia cordata extract and bamboo vinegar at a weight ratio of 1:2-5, and the houttuynia cordata extract is prepared by the following method: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; the pH of the bamboo vinegar solution is 2-4.
5. A preparation method of the bactericidal water-soluble fertilizer as defined in any one of claims 1 to 4, which is characterized by comprising the following steps:
(1) weighing the components in the nutrition base material according to the proportion, drying and crushing at 80 ℃ to 100-mesh and 200-mesh powder to obtain a fine powder mixture of the nutrition base material;
(2) preparing nano silver colloid: mixing 0.2 wt% cyclodextrin water solution and silver ammonia solution with mass molar concentration of 0.8mol/L in a volume ratio of 1: 80, and stirring at 80 ℃ for 60min to obtain nano silver colloid with average particle size of 10-30 nm;
(3) preparing a synergist: weighing 400g of herba Houttuyniae, adding appropriate amount of distilled water, decocting for three times, each for 30min, mixing filtrates, and concentrating to 1L to obtain herba Houttuyniae extractive solution; mixing the houttuynia cordata extract and the bamboo vinegar liquid according to the weight ratio of 1:2-5 to obtain a synergist;
(4) uniformly mixing nano-silver colloid, a surfactant, chitosan and a synergist according to a ratio, and then freeze-drying to obtain a powder mixture;
(5) and (3) uniformly stirring and mixing the nutrient base material fine powder obtained in the step (1) and the powder obtained in the step (4), and then vacuum packaging and warehousing to obtain the fertilizer.
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| CN111657033A (en) * | 2020-05-06 | 2020-09-15 | 六安市裕安区伊甸园油茶种植专业合作社 | Method for preventing and treating diseases and pests of camellia oleifera forest |
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| CN111657033A (en) * | 2020-05-06 | 2020-09-15 | 六安市裕安区伊甸园油茶种植专业合作社 | Method for preventing and treating diseases and pests of camellia oleifera forest |
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