CN111792966A - Water-soluble fertilizer based on precise planting and planting method thereof - Google Patents
Water-soluble fertilizer based on precise planting and planting method thereof Download PDFInfo
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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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
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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
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
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- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
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Abstract
The invention relates to the technical field of crop planting, in particular to a water-soluble fertilizer based on accurate fertilization and a fertilization method thereof, which have simple components and greatly reduce fertilization times; the dilution can be carried out quickly; the biogas slurry is added, so that the product yield is improved; the fertilizer comprises a liquid fertilizer and a solid granular fertilizer, wherein the liquid fertilizer is prepared from the following raw materials in parts by weight: 100-200 parts of biogas slurry, 20-50 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic sylvite, 2-6 parts of purple cabbage juice, 5-15 parts of humic acid and 5-15 parts of alginic acid; the solid granular fertilizer comprises a wrapping film and a fertilizer core inside the wrapping film, wherein the wrapping film is made of colloidal starch, and the fertilizer core is prepared from the following raw materials in parts by weight: 20-50 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic sylvite, 5-15 parts of humic acid, 5-15 parts of alginic acid and 70-120 parts of organic fertilizer.
Description
Technical Field
The invention relates to the technical field of crop planting, in particular to a water-soluble fertilizer based on accurate planting and a planting method thereof.
Background
The water-soluble fertilizer is a compound fertilizer containing nitrogen, phosphorus, potassium, calcium, magnesium, trace elements, amino acid, humic acid, alginic acid and the like, which can be completely dissolved in water. The fertilizer is divided into a solid water-soluble fertilizer and a liquid water-soluble fertilizer in form. The nutrient content of the fertilizer comprises macroelement water-soluble fertilizer, secondary element water-soluble fertilizer, microelement water-soluble fertilizer, amino acid-containing water-soluble fertilizer, humic acid-containing water-soluble fertilizer, organic water-soluble fertilizer and the like, but the water-soluble fertilizer is quick-acting fertilizer and can only be used as topdressing generally. Particularly, in conventional agricultural production, the water-soluble fertilizer cannot replace other conventional fertilizers. The method is to combine a base fertilizer with an additional fertilizer, combine an organic fertilizer with an inorganic fertilizer, and combine a water-soluble fertilizer with a conventional fertilizer, so as to reduce the cost and exert the advantages of various fertilizers.
The water-soluble fertilizer is generally used independently, a pouring or spraying mode is adopted when the water-soluble fertilizer is used, the water-soluble fertilizer is high in quick-acting performance and difficult to persist in soil for a long time, a small amount of water-soluble fertilizer is used for multiple times, the most important fertilization principle is met, the characteristic that plant roots absorb nutrients uninterruptedly, leaching loss caused by one-time large-amount fertilization is reduced, workload is increased due to the small-amount multiple-time fertilization mode, the existing water-soluble fertilizer has a large promotion space in the aspects of yield promotion, pest prevention and the like, and meanwhile dilution multiple of the existing water-soluble fertilizer is not convenient to control, so that workload is increased.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a water-soluble fertilizer based on accurate fertilization, which has simple components and greatly reduces the fertilization times; the dilution can be carried out quickly; and the product yield is improved by adding biogas slurry.
The invention also aims to provide a method for applying the water-soluble fertilizer based on accurate application.
The invention relates to a water-soluble fertilizer based on precise application, which comprises a liquid fertilizer and a solid granular fertilizer, wherein the liquid fertilizer is prepared from the following raw materials in parts by weight: 100-200 parts of biogas slurry, 20-50 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic sylvite, 2-6 parts of purple cabbage juice, 5-15 parts of humic acid and 5-15 parts of alginic acid;
the solid granular fertilizer comprises a wrapping film and a fertilizer core inside the wrapping film, wherein the wrapping film is made of colloidal starch, and the fertilizer core is prepared from the following raw materials in parts by weight: 20-50 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic sylvite, 5-15 parts of humic acid, 5-15 parts of alginic acid and 70-120 parts of organic fertilizer.
The preparation method of the water-soluble fertilizer comprises the following steps:
s1, preparing a solid granular fertilizer: taking 20-50 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic potassium salt, 5-15 parts of humic acid, 5-15 parts of alginic acid and 70-120 parts of organic fertilizer, crushing, uniformly mixing, granulating, dipping in water after granulation is finished, wrapping starch, putting the starch in boiling water, boiling the starch into colloid, taking out the colloid, cooling and drying to form solid granular fertilizer;
s2, preparing a liquid fertilizer: weighing 20-50 parts of urea, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic potassium salt, 2-6 parts of purple cabbage juice, 5-15 parts of humic acid and 5-15 parts of alginic acid, uniformly mixing, adding 100-200 parts of biogas slurry, and continuously uniformly mixing to form a liquid fertilizer;
s3, mixing the solid granular fertilizer with the liquid fertilizer to form the water-soluble fertilizer.
The invention relates to a water-soluble fertilizer based on accurate application, which is prepared from the following raw materials in parts by weight: 200 parts of biogas slurry, 20-34 parts of urea, 10-20 parts of calcium superphosphate, 20-40 parts of inorganic sylvite, 2-6 parts of purple cabbage juice, 5-15 parts of humic acid and 5-15 parts of alginic acid;
the solid granular fertilizer comprises a wrapping film and a fertilizer core inside the wrapping film, wherein the wrapping film is made of colloidal starch, and the fertilizer core is prepared from the following raw materials in parts by weight: 20-30 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-20 parts of calcium superphosphate, 20-30 parts of inorganic sylvite, 5-10 parts of humic acid, 5-10 parts of alginic acid and 100-120 parts of organic fertilizer.
The water-soluble fertilizer based on accurate application is prepared by mixing and fermenting cow dung, rabbit dung and chicken dung.
According to the water soluble fertilizer based on accurate application, the starch in S1 is one or more of mung bean starch, potato starch, wheat starch, sweet potato starch, water chestnut starch, lotus root starch, water chestnut starch, corn starch, cornstarch, sweet potato starch, arrowroot starch, cassava starch and coconut starch.
According to the water-soluble fertilizer based on accurate application, the inorganic potassium salt is potassium chloride.
The invention relates to a water-soluble fertilizer based on accurate application, which is prepared by mixing and fermenting dried chicken manure, bacterial residues and vinasse.
According to the water-soluble fertilizer based on accurate application, the S1 is placed in the wastewater and is fished out after being boiled for 5-10 min; the cooling mode is that the supercooled water is cooled; the particle size of the solid granular fertilizer is 2-4mm, and the colloid thickness is 0.5-1 mm.
The invention relates to a water-soluble fertilizer application method based on precise application, which comprises the following steps:
(a) diluting the liquid fertilizer to a proper multiple;
(b) adding the solid granular fertilizer into the diluted liquid fertilizer, and uniformly mixing to form a water-soluble fertilizer;
(c) spraying the water-soluble fertilizer in the step (b) to the soil of the roots of the plants.
The invention relates to a method for applying a water-soluble fertilizer based on precise application, wherein the water-soluble fertilizer in the step (b) is used within 2 hours.
Compared with the prior art, the invention has the beneficial effects that: firstly, under the condition of adding purple cabbage juice, the water-soluble fertilizer can be quickly diluted to a proper multiple according to color change during dilution, and the color of the solution can be changed when the water-soluble fertilizer is diluted to the proper multiple, so that the dilution efficiency is greatly improved; secondly, when the water-soluble fertilizer is applied to plants, the liquid fertilizer plays a role firstly, the starch is decomposed after a plurality of days, so that the nutrient substances wrapped in the starch are released and are gradually utilized by crops, the fertilizing times are reduced, and the decomposing time of the starch can be adjusted according to the colloid thickness, so that the topdressing interval is changed; thirdly, under the condition of adding biogas slurry, the yield of peanuts is improved, the biogas slurry contains a large amount of nutrient components, mainly comprises abundant nitrogen (0.03-0.08%), phosphorus (0.02-0.07%), potassium (0.05-1.40%) and other macronutrient elements, calcium, copper, iron, zinc, manganese and other medium and micronutrient elements, and also contains abundant amino acids, B vitamins, various hydrolases, certain plant hormones and substances or factors which have inhibitory effect on plant diseases and insect pests, thereby playing a positive role in improving the yield; fourthly, the disease and insect resistance of the peanuts is improved by adding the phoenix tree leaf powder.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1:
s1, preparing a solid granular fertilizer: taking 50 parts of urea, 30 parts of calcium superphosphate, 20 parts of potassium chloride, 15 parts of humic acid, 5 parts of alginic acid and 70 parts of organic fertilizer, crushing, uniformly mixing, granulating, dipping in water after granulation is finished, wrapping corn starch and sweet potato powder, putting into boiling water, boiling, taking out after 5min, boiling the starch into colloid, cooling by using supercooled water, and drying to form a solid granular fertilizer, wherein the average particle size of the solid granular fertilizer is 3.3mm, and the thickness of the colloid is 0.7 mm;
s2, preparing a liquid fertilizer:
weighing 50 parts of urea, 10 parts of calcium superphosphate, 20 parts of potassium chloride, 6 parts of purple cabbage juice, 15 parts of humic acid and 15 parts of alginic acid, uniformly mixing, adding 200 parts of biogas slurry, and continuously uniformly mixing to form a liquid fertilizer;
s3, mixing the solid granular fertilizer with the liquid fertilizer to form the water-soluble fertilizer.
The using method comprises the following steps: (a) diluting the liquid fertilizer by 1000 times;
(b) adding the solid granular fertilizer into the diluted liquid fertilizer, and uniformly mixing to form a water-soluble fertilizer;
(c) spraying the water-soluble fertilizer in the step (b) to the soil of the roots of the plants.
Example 2:
s1, preparing a solid granular fertilizer: taking 50 parts of urea, 30 parts of phoenix tree leaf powder, 30 parts of calcium superphosphate, 20 parts of potassium chloride, 15 parts of humic acid, 5 parts of alginic acid and 70 parts of organic fertilizer, crushing, uniformly mixing, granulating, dipping in water after granulation is finished, wrapping corn starch and sweet potato powder, putting into boiling water, taking out after boiling for 10min, boiling starch into colloid, cooling by using supercooled water, and drying to form a solid granular fertilizer, wherein the average particle size of the solid granular fertilizer is 3.4mm, and the colloid thickness is 0.8 mm;
s2, preparing a liquid fertilizer:
weighing 20 parts of urea, 30 parts of phoenix tree leaf powder, 30 parts of calcium superphosphate, 50 parts of potassium chloride, 2 parts of purple cabbage juice, 5 parts of humic acid and 5 parts of alginic acid, uniformly mixing, adding 100 parts of biogas slurry, and continuously uniformly mixing to form a liquid fertilizer;
s3, mixing the solid granular fertilizer with the liquid fertilizer to form the water-soluble fertilizer.
The using method comprises the following steps: (a) diluting the liquid fertilizer by 1000 times;
(b) adding the solid granular fertilizer into the diluted liquid fertilizer, and uniformly mixing to form a water-soluble fertilizer;
(c) spraying the water-soluble fertilizer in the step (b) to the soil of the roots of the plants.
Example 3:
s1, preparing a solid granular fertilizer: taking 30 parts of urea, 25 parts of phoenix tree leaf powder, 20 parts of calcium superphosphate, 30 parts of potassium chloride, 10 parts of humic acid, 10 parts of alginic acid and 100 parts of organic fertilizer, crushing, uniformly mixing, granulating, dipping in water after granulation is finished, wrapping corn starch and sweet potato powder, putting into boiling water, taking out after boiling for 10min, boiling starch into colloid, cooling by using supercooled water, and drying to form a solid granular fertilizer, wherein the average particle size of the solid granular fertilizer is 3.2mm, and the colloid thickness is 0.7 mm;
s2, preparing a liquid fertilizer:
weighing 34 parts of urea, 20 parts of calcium superphosphate, 40 parts of potassium chloride, 5 parts of purple cabbage juice, 10 parts of humic acid and 10 parts of alginic acid, uniformly mixing, adding 150 parts of biogas slurry, and continuously uniformly mixing to form a liquid fertilizer;
s3, mixing the solid granular fertilizer with the liquid fertilizer to form the water-soluble fertilizer.
The using method comprises the following steps: (a) diluting the liquid fertilizer by 1000 times;
(b) adding the solid granular fertilizer into the diluted liquid fertilizer, and uniformly mixing to form a water-soluble fertilizer;
(c) spraying the water-soluble fertilizer in the step (b) to the soil of the roots of the plants.
Example 4:
s1, preparing a solid granular fertilizer: taking 25 parts of urea, 25 parts of phoenix tree leaf powder, 15 parts of calcium superphosphate, 23 parts of potassium chloride, 8 parts of humic acid, 8 parts of alginic acid and 115 parts of organic fertilizer, crushing, uniformly mixing, granulating, dipping in water after granulation is finished, wrapping corn starch and sweet potato powder, putting into boiling water, taking out after boiling for 10min, boiling starch into colloid, cooling by using supercooled water, and drying to form a solid granular fertilizer, wherein the average particle size of the solid granular fertilizer is 3.5mm, and the colloid thickness is 0.8 mm;
s2, preparing a liquid fertilizer:
weighing 30 parts of urea, 15 parts of calcium superphosphate, 30 parts of potassium chloride, 5 parts of purple cabbage juice, 10 parts of humic acid and 10 parts of alginic acid, uniformly mixing, adding 170 parts of biogas slurry, and continuously uniformly mixing to form a liquid fertilizer;
s3, mixing the solid granular fertilizer with the liquid fertilizer to form the water-soluble fertilizer.
The using method comprises the following steps: (a) diluting the liquid fertilizer by 1000 times;
(b) adding the solid granular fertilizer into the diluted liquid fertilizer, and uniformly mixing to form a water-soluble fertilizer;
(c) spraying the water-soluble fertilizer in the step (b) to the soil of the roots of the plants.
Comparative example 1:
the difference from example 4 is that purple cabbage juice was not added.
Comparative example 2:
water-soluble fertilizer: weighing 30 parts of urea, 15 parts of calcium superphosphate, 30 parts of potassium chloride, 5 parts of purple cabbage juice, 10 parts of humic acid and 10 parts of alginic acid, uniformly mixing, adding 170 parts of biogas slurry, and continuously uniformly mixing to form the water-soluble fertilizer.
The using method comprises the following steps: (a) diluting the water-soluble fertilizer by 1000 times;
(b) spraying the water-soluble fertilizer in the step (a) to the soil of the roots of the plants.
Comparative example 3:
the difference from example 4 is that the biogas slurry was replaced with an equal amount of water.
Comparative example 5:
the difference from example 4 is that no phoenix tree leaf powder was added.
The water-soluble fertilizers prepared from examples 1-4 and comparative examples 1-3 were tested as follows:
the first test is carried out in Hebei province, the test field is brown soil, peanuts are planted, the thickness of a plough layer is 28cm, the soil agrochemical property is 39.25g/kg of organic matters, the pH value is 7.12, the alkaline hydrolysis nitrogen is 109.23mg/kg, the quick-acting phosphorus is 30.65mg/kg, the quick-acting potassium is 173.25mg/kg, and the area of the test field is 1400m2. After the unified treatment, the data are divided into 14 areas on average, each embodiment and each proportion are divided into 2 areas, the areas are randomly distributed and marked, and the following data are obtained:
from the above data, the purple cabbage juice color changed as follows according to the change of pH,
| pH | <6.5 | 7.0-7.1 | 7.5-8.5 | 8.5-12 | >12.5 |
| colour(s) | Pink colour | Purple color | Blue color | Green colour | Yellow colour |
Under the condition of adding purple cabbage juice, the water-soluble fertilizer can be quickly diluted to a proper multiple according to color change during dilution, and the color of the solution can be changed when the water-soluble fertilizer is diluted to the proper multiple, so that the dilution efficiency is greatly improved; when the water-soluble fertilizer is applied to plants, the liquid fertilizer plays a role firstly, the starch is decomposed after a plurality of days, so that the nutrient substances wrapped in the starch are released and are gradually utilized by crops, the fertilizing times are reduced, and the decomposing time of the starch can be adjusted according to the thickness of the colloid, so that the topdressing interval is changed; from the yields of the examples 1 to 4 and the comparative examples 1 to 3, the yield of peanuts is improved under the condition of adding biogas slurry, the biogas slurry contains a large amount of nutrient components, mainly comprises abundant nitrogen (0.03 to 0.08 percent), phosphorus (0.02 to 0.07 percent), potassium (0.05 to 1.40 percent) and other macronutrient elements, calcium, copper, iron, zinc, manganese and other medium and micronutrient elements, and also contains abundant amino acids, B vitamins, various hydrolases, certain plant hormones and substances or factors which have inhibitory effect on plant diseases and insect pests, and plays a positive role in improving the yield; and the phoenix tree leaves can be used as pesticides and can kill plant diseases and insect pests such as aphid and the like.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The water-soluble fertilizer based on precise application is characterized by comprising a liquid fertilizer and a solid granular fertilizer, wherein the liquid fertilizer is prepared from the following raw materials in parts by weight: 100-200 parts of biogas slurry, 20-50 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic sylvite, 2-6 parts of purple cabbage juice, 5-15 parts of humic acid and 5-15 parts of alginic acid;
the solid granular fertilizer comprises a wrapping film and a fertilizer core inside the wrapping film, wherein the wrapping film is made of colloidal starch, and the fertilizer core is prepared from the following raw materials in parts by weight: 20-50 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic sylvite, 5-15 parts of humic acid, 5-15 parts of alginic acid and 70-120 parts of organic fertilizer.
The preparation method of the water-soluble fertilizer comprises the following steps:
s1, preparing a solid granular fertilizer: taking 20-50 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic potassium salt, 5-15 parts of humic acid, 5-15 parts of alginic acid and 70-120 parts of organic fertilizer, crushing, uniformly mixing, granulating, dipping in water after granulation is finished, wrapping starch, putting the starch in boiling water, boiling the starch into colloid, taking out the colloid, cooling and drying to form solid granular fertilizer;
s2, preparing a liquid fertilizer: weighing 20-50 parts of urea, 10-30 parts of calcium superphosphate, 20-50 parts of inorganic potassium salt, 2-6 parts of purple cabbage juice, 5-15 parts of humic acid and 5-15 parts of alginic acid, uniformly mixing, adding 100-200 parts of biogas slurry, and continuously uniformly mixing to form a liquid fertilizer;
s3, mixing the solid granular fertilizer with the liquid fertilizer to form the water-soluble fertilizer.
2. The water-soluble fertilizer based on precise crop application as claimed in claim 1, wherein the liquid fertilizer is prepared from the following raw materials in parts by weight: 200 parts of biogas slurry, 20-34 parts of urea, 10-20 parts of calcium superphosphate, 20-40 parts of inorganic sylvite, 2-6 parts of purple cabbage juice, 5-15 parts of humic acid and 5-15 parts of alginic acid;
the solid granular fertilizer comprises a wrapping film and a fertilizer core inside the wrapping film, wherein the wrapping film is made of colloidal starch, and the fertilizer core is prepared from the following raw materials in parts by weight: 20-30 parts of urea, 20-30 parts of phoenix tree leaf powder, 10-20 parts of calcium superphosphate, 20-30 parts of inorganic sylvite, 5-10 parts of humic acid, 5-10 parts of alginic acid and 100-120 parts of organic fertilizer.
3. The water-soluble fertilizer based on precise fertilization as claimed in claim 2, wherein the biogas slurry is prepared by mixing and fermenting cow dung, rabbit dung and chicken dung.
4. The water soluble fertilizer based on precise crop application and the crop application method thereof as claimed in claim 3, wherein the starch in S1 is one or more of mung bean starch, potato starch, wheat starch, sweet potato starch, water chestnut starch, lotus root starch, water chestnut starch, corn starch, cornstarch, sweet potato starch, arrowroot starch, tapioca starch and coconut starch.
5. The water soluble fertilizer based on precision crop application as claimed in claim 4, wherein the inorganic potassium salt is potassium chloride.
6. The water-soluble fertilizer based on precise application as claimed in claim 5, wherein the organic fertilizer is prepared by mixing and fermenting dried chicken manure, mushroom dregs and vinasse.
7. The water soluble fertilizer based on precise fertilization according to claim 6, wherein the S1 is fished out after being placed in wastewater and boiled for 5-10 min; the cooling mode is that the supercooled water is cooled; the particle size of the solid granular fertilizer is 2-4mm, and the colloid thickness is 0.5-1 mm.
8. The method for applying the water-soluble fertilizer based on accurate application as claimed in any one of claims 1 to 7, characterized by comprising the following steps:
(a) diluting the liquid fertilizer to a proper multiple;
(b) adding the solid granular fertilizer into the diluted liquid fertilizer, and uniformly mixing to form a water-soluble fertilizer;
(c) spraying the water-soluble fertilizer in the step (b) to the soil of the roots of the plants.
9. The method for applying the water-soluble fertilizer based on accurate application as claimed in claim 8, wherein the water-soluble fertilizer in the step (b) is used up within 2 hours.
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