CN116283407A - Large-particle fertilizer applied to sweet potatoes - Google Patents
Large-particle fertilizer applied to sweet potatoes Download PDFInfo
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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
- C05G3/50—Surfactants; Emulsifiers
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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
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Chemical & Material Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a large-particle fertilizer applied to sweet potatoes, which is prepared from the following raw materials in parts by weight: 30-40 parts of potassium sulfate, 8-12 parts of composite nitrogenous fertilizer, 3-5 parts of composite phosphate fertilizer, 1-2 parts of magnesium-calcium-ferrum-silicon-zinc microelements, 0.5-1 part of nano biomass carbon and 40-50 parts of plant ash; the large-grain fertilizer is manufactured according to a soil laborious formula, and 5-20 g of large-grain fertilizer with different weights is produced by taking a sweet potato 3500 strain; and a layer of porous heat-shrinkable degradable polyethylene film is wrapped outside the large-grain fertilizer. The formula is designed aiming at the fertilizer requirement rules of sweet potato such as potassium preference, low nitrogen and the like, and the fertilizer is formed into large-particle fertilizer, so that the fertilizer is favorable for accurate quantitative fertilization according to plants, the overground parts of the sweet potato are not easy to grow, and the problem that the manual fertilization application amount is difficult to master is solved; because of large particles, slow dissolution and release speed, the fertilizer has slow release function, and compared with conventional fertilization, the large-particle fertilizer investment is reduced by 37.5%, and the yield is increased by 6.25%.
Description
Technical Field
The invention relates to the technical field of fertilizers, in particular to a large-particle fertilizer applied to sweet potatoes.
Background
China is the largest sweet potato producing country in the world, and the annual sweet potato planting area is 7500-8000 ten thousand acres, which is inferior to rice, wheat and corn. The sweet potato has longer growing period, strong fertilizer absorbing capability and large fertilizer amount. Traditional fertilizers are mostly powdery or small granules within 5 mm. The traditional fertilizer has the following four defects: firstly, the traditional fertilizer has small particles and high water melting speed, so that a large amount of fertilizer is lost and volatilized along with rainwater, and is really absorbed by crops by less than 40%; secondly, the traditional fertilizer has quick loss and short residence time in soil, and crops in one season must be fertilized for multiple times, thus consuming labor; thirdly, because the traditional fertilizer has small particles, farmers in mountain areas or manual fertilization areas can hardly accurately master the fertilization amount each time, the insufficient fertilization amount or excessive fertilization amount is easily caused, the yield of crops is reduced and the fertilizer is wasted by light people, and the root and seedling burning and harvest are caused by heavy people; fourth, although many controlled release fertilizers are currently marketed, most of the controlled release fertilizers are prepared by spraying sulfur, resin and other waterproof organic matters on the surface of large-particle urea, such as: the core fertilizers selected and manufactured by the Chinese patent publications CN101177365A, CN101200399A, CN101362664A and the like have small particles, the diameter is generally 3-5 mm, the surface area of the fertilizer per ton is large, the coating materials are much more used, and the coating materials are generally 20%, so that the cost is increased, and the original content of the fertilizer is reduced. For example, the Canadian Chinese maple controlled release urea has the nitrogen content of about 37 percent after coating, and the plant price is about 1000 yuan/ton more expensive than that of common urea, and is 1 time more expensive than other nitrogenous fertilizers with the same content. The added benefit is far less than the added cost, so the popularization in the market is difficult.
Disclosure of Invention
The invention aims to provide a large-particle fertilizer applied to sweet potatoes, which has the advantages of reasonable formula, strong practicability and high cost performance.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the large-particle fertilizer applied to the sweet potatoes consists of the following raw materials in parts by weight: 30-40 parts of potassium sulfate, 8-12 parts of composite nitrogenous fertilizer, 3-5 parts of composite phosphate fertilizer, 1-2 parts of magnesium-calcium-ferrum-silicon-zinc microelements, 0.5-1 part of nano biomass carbon and 40-50 parts of plant ash.
The large-particle fertilizer is manufactured according to a soil laborious formula, 5-20 g of large-particle fertilizer with different weights is produced by taking a 3500 strain of sweet potato, and the diameter is 2-10cm;
and wrapping a layer of porous heat-shrinkable degradable polyethylene film on the formed large-grain fertilizer.
Further, the large-particle fertilizer is in any one of a spherical shape, an ellipsoidal shape and a cylindrical shape.
Further, the composite nitrogen fertilizer is composed of the following raw materials in percentage by weight: 37 to 40 percent of urea, 55 to 58 percent of ammonium chloride, 2.5 to 3.0 percent of dilute sulfuric acid, 0.8 to 1.0 percent of synthetic ammonia, 0.8 to 1.0 percent of ammonium sulfate, 0.2 to 0.4 percent of zinc sulfate, 0.1 to 0.3 percent of intelligent peptide and 0.1 to 0.2 percent of surfactant.
Further, the composite phosphate fertilizer consists of the following raw materials in percentage by weight: 0.3 to 0.4 percent of soluble chitosan, 2 to 4 percent of fulvic acid, 80 to 85 percent of 85 weight percent of industrial phosphoric acid, 1 to 2 percent of synergistic agent and 10 to 16 percent of water.
Further, bamboo, coconut shells, hemp stems and eucalyptus globulus as raw materials are selected as the nano biomass carbon, the four raw materials are calcined at 900 ℃ to obtain four different nano biomass carbons, and the four nano biomass carbons are mixed according to a mass ratio of 1:1:1:1 and are sieved by a 200-mesh sieve.
Compared with the prior art, the invention has the following beneficial effects:
1. the formula is designed aiming at the fertilizer requirement rules of sweet potato such as potassium preference, low nitrogen and the like, and the fertilizer is formed into large-particle fertilizer, so that the fertilizer is favorable for accurate quantitative fertilization according to plants, the overground parts of the sweet potato are not easy to grow, and the problem that the manual fertilization application amount is difficult to master is solved;
2. because of large particles, the dissolution and release speeds are slow, and the sustained-release tablet has a certain sustained-release function;
3. the fertilizer can be manufactured into a certain specification according to the growth rule of crops, is beneficial to one-time throwing, is convenient and quick, and reduces the labor intensity;
4. the surface area of the fertilizer is reduced compared with that of a small granular fertilizer under the same mass, the used coating material is reduced by 40-60%, and the cost is reduced;
5. the nano biomass carbon is added in the fertilizer formula, so that the carbon content of the loss in the soil consumed by sweet potato production is supplemented, and the utilization efficiency (mainly nitrogen-phosphorus fertilizer) of the sweet potato to the fertilizer can be stimulated by exogenous carbon; the plant ash is added to supplement the carbon content and the potassium nutrient content, so that the improvement of the yield of the sweet potato is facilitated;
6. compared with the conventional fertilization, the large-granule fertilizer investment is reduced by 37.5%, and the yield can be increased by 6.25% by applying the large-granule fertilizer.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
In the following examples, the composite nitrogen fertilizer consists of the following raw materials in percentage by weight: 37 to 40 percent of urea, 55 to 58 percent of ammonium chloride, 2.5 to 3.0 percent of dilute sulfuric acid, 0.8 to 1.0 percent of synthetic ammonia, 0.8 to 1.0 percent of ammonium sulfate, 0.2 to 0.4 percent of zinc sulfate, 0.1 to 0.3 percent of intelligent peptide and 0.1 to 0.2 percent of surfactant.
Prepared by the following method: urea, ammonium chloride, ammonium sulfate, zinc sulfate and intelligent peptide are mixed in certain proportion, and the mixture is fed into an ammonia process granulator, diluted sulfuric acid and synthetic ammonia are fed into the granulator for ammoniation reaction, the material in the granulator is heated to about 60 ℃ by the heat released by the reaction, a small amount of steam is fed into the granulator to moisten the material, the material rolls in the granulator, and the material is bonded into granules. And (3) after the granules come out of the granulator, drying and screening to obtain the composite nitrogenous fertilizer.
The compound phosphate fertilizer consists of the following raw materials in percentage by weight: 0.3 to 0.4 percent of soluble chitosan, 2 to 4 percent of fulvic acid, 80 to 85 percent of 85 weight percent of industrial phosphoric acid, 1 to 2 percent of synergistic agent and 10 to 16 percent of water.
Prepared by the following method: dissolving soluble chitosan, fulvic acid and a synergistic agent into water, and then mixing with 85wt% of industrial phosphoric acid and stirring uniformly.
The nano biomass carbon is prepared by taking bamboo, coconut shells, hemp stems and eucalyptus globulus as raw materials, calcining the four raw materials at 900 ℃ to obtain four different nano biomass carbons, and mixing the four nano biomass carbons according to a mass ratio of 1:1:1 and sieving the four nano biomass carbons with a 200-mesh sieve.
Example 1
The large-particle fertilizer applied to the sweet potatoes consists of the following raw materials in parts by weight: 30 parts of potassium sulfate, 8 parts of composite nitrogen fertilizer, 3 parts of composite phosphate fertilizer, 1 part of magnesium-calcium-iron-silicon-zinc microelements, 0.5 part of nano biomass carbon and 40 parts of plant ash;
the compound nitrogen fertilizer consists of 38% of urea, 57% of ammonium chloride, 2.5% of dilute sulfuric acid, 0.9% of synthetic ammonia, 0.9% of ammonium sulfate, 0.3% of zinc sulfate, 0.2% of intelligent peptide and 0.2% of surfactant.
The compound phosphate fertilizer consists of 0.35% of soluble chitosan, 3% of fulvic acid, 82.5% of 85% of industrial phosphoric acid, 1.5% of synergistic agent and 12.65% of water.
The large-grain fertilizer is prepared according to a soil laborious formula, and 5 g of large-grain fertilizer is produced by taking the 3500 strains of sweet potatoes as the basis.
Firstly, heating a composite nitrogen fertilizer to be molten, then adding potassium sulfate, a composite phosphate fertilizer, magnesium-calcium-iron-silicon-zinc microelements, nano biomass carbon and plant ash, fully stirring uniformly to prepare molten slurry, pouring the molten slurry into a spherical mold with the diameter of 2cm by using a quantitative pouring machine, opening the frozen fertilizer mold by using a stretching machine after the mold is cooled, separating the spherical fertilizer in the mold, continuously pouring the mold after the mold is closed, conveying the separated spherical fertilizer to a thermoplastic machine, sealing by using a perforated polyethylene film, and selecting the perforation number according to the release time. The fertilizer can be released in soil for 50-90 days.
Example 2
The large-particle fertilizer applied to the sweet potatoes consists of the following raw materials in parts by weight: 40 parts of potassium sulfate, 12 parts of composite nitrogen fertilizer, 5 parts of composite phosphate fertilizer, 2 parts of magnesium-calcium-iron-silicon-zinc microelements, 1 part of nano biomass carbon and 50 parts of plant ash;
the compound nitrogen fertilizer consists of 38% of urea, 57% of ammonium chloride, 2.5% of dilute sulfuric acid, 0.9% of synthetic ammonia, 0.9% of ammonium sulfate, 0.3% of zinc sulfate, 0.2% of intelligent peptide and 0.2% of surfactant.
The compound phosphate fertilizer consists of 0.35% of soluble chitosan, 3% of fulvic acid, 82.5% of 85% of industrial phosphoric acid, 1.5% of synergistic agent and 12.65% of water.
The large-grain fertilizer is prepared according to a soil laborious formula, and 20 g of large-grain fertilizer is produced by taking a sweet potato 3500 strain as a reference;
firstly, heating a composite nitrogen fertilizer to be molten, then adding potassium sulfate, a composite phosphate fertilizer, magnesium-calcium-iron-silicon-zinc microelements, nano biomass carbon and plant ash, fully stirring uniformly to prepare molten slurry, pouring the molten slurry into an ellipsoidal mould with the diameter of 10cm by using a quantitative pouring machine, opening the frozen fertilizer mould by using a stretching machine after the mould is cooled, separating the ellipsoidal fertilizer in the mould, pouring the mould continuously, conveying the separated ellipsoidal fertilizer to a thermoplastic machine, sealing by using a perforated polyethylene film, and selecting the perforation number according to the release time. The fertilizer can be released in soil for 90-120 days.
Example 3
The large-particle fertilizer applied to the sweet potatoes consists of the following raw materials in parts by weight: 35 parts of potassium sulfate, 10 parts of composite nitrogen fertilizer, 4 parts of composite phosphate fertilizer, 1.5 parts of magnesium-calcium-iron-silicon-zinc microelements, 0.8 part of nano biomass carbon and 45 parts of plant ash;
the compound nitrogen fertilizer consists of 38% of urea, 57% of ammonium chloride, 2.5% of dilute sulfuric acid, 0.9% of synthetic ammonia, 0.9% of ammonium sulfate, 0.3% of zinc sulfate, 0.2% of intelligent peptide and 0.2% of surfactant.
The compound phosphate fertilizer consists of 0.35% of soluble chitosan, 3% of fulvic acid, 82.5% of 85% of industrial phosphoric acid, 1.5% of synergistic agent and 12.65% of water.
The large-grain fertilizer is prepared according to a soil laborious formula, and 12 g of large-grain fertilizer is produced by taking a sweet potato 3500 strain as a reference;
firstly, heating a composite nitrogen fertilizer to be molten, then adding potassium sulfate, a composite phosphate fertilizer, magnesium-calcium-iron-silicon-zinc microelements, nano biomass carbon and plant ash, fully stirring uniformly to prepare molten pulp, pouring the molten pulp into a cylindrical die with the diameter of 7cm by using a quantitative pouring machine, opening the frozen fertilizer die by using a stretching machine after the die is cooled, separating the cylindrical fertilizer in the die, continuously pouring the die after the die is closed, conveying the separated cylindrical fertilizer to a thermoplastic machine, sealing by using a perforated polyethylene film, and selecting the perforation number according to the release time. The fertilizer can be released in soil for 90-120 days.
Comparative example 1
The large-particle fertilizer applied to the sweet potatoes consists of the following raw materials in parts by weight: 35 parts of potassium sulfate, 10 parts of composite nitrogen fertilizer, 4 parts of composite phosphate fertilizer, 1.5 parts of magnesium-calcium-iron-silicon-zinc microelements and 0.8 part of nano biomass carbon;
the compound nitrogen fertilizer consists of 38% of urea, 57% of ammonium chloride, 2.5% of dilute sulfuric acid, 0.9% of synthetic ammonia, 0.9% of ammonium sulfate, 0.3% of zinc sulfate, 0.2% of intelligent peptide and 0.2% of surfactant.
The compound phosphate fertilizer consists of 0.35% of soluble chitosan, 3% of fulvic acid, 82.5% of 85% of industrial phosphoric acid, 1.5% of synergistic agent and 12.65% of water.
The large granule fertilizer was produced in the same manner as in example 3.
Comparative example 2
The large-particle fertilizer applied to the sweet potatoes consists of the following raw materials in parts by weight: 35 parts of potassium sulfate, 10 parts of composite nitrogen fertilizer, 4 parts of composite phosphate fertilizer, 1.5 parts of magnesium-calcium-iron-silicon-zinc microelements and 45 parts of plant ash;
the compound nitrogen fertilizer consists of 38% of urea, 57% of ammonium chloride, 2.5% of dilute sulfuric acid, 0.9% of synthetic ammonia, 0.9% of ammonium sulfate, 0.3% of zinc sulfate, 0.2% of intelligent peptide and 0.2% of surfactant.
The compound phosphate fertilizer consists of 0.35% of soluble chitosan, 3% of fulvic acid, 82.5% of 85% of industrial phosphoric acid, 1.5% of synergistic agent and 12.65% of water.
The large granule fertilizer was produced in the same manner as in example 3.
Application test
Test site: soil pH is 6.7, organic matter is 16.98g/kg, alkaline nitrogen is 60.37mg/kg, available phosphorus is 7.54mg/kg, and quick-acting potassium is 166mg/kg at Gu Wangou Jiang Zhuangji Xuzhou city.
Test crop: sweet potato 19
Planting time: transplanting at 5/2/2022 and harvesting at 9/10
Setting 5 treatments, 1) CK (not fertilizing); 2) Conventional fertilization (N-P-k=15:15:15), the dosage is 80 kg/mu; 3) Large granule fertilizer a (comparative example 1) at 50 kg/mu; 4) Large granule fertilizer B (comparative example 2) at 50 kg/mu; 5) Large granule fertilizer C (example 3), 50 kg/mu.
30m per treatment 2 3 replicates, the same routine management. Investigating the number of single plant tubers, the weight of single plant tubers, the fresh weight of the overground part and the underground part of sweet potatoes and the like (see the table below); compared with conventional fertilization, the investment of the large-grain fertilizer is reduced by 37.5%, and compared with conventional fertilization, the large-grain fertilizer is increased by 6.25%; by contrast to the large-particle ABC, the nano biomass carbon and plant ash are added into the fertilizer formula at the same time, so that the weight of single potato plants can be increased, and the acre yield can be increased. The results show that: through large-particle accurate fertilization, the chemical fertilizer investment is greatly reduced, the nutrient utilization efficiency can be improved, and the adverse effect on the environment ecology is reduced.
| Treatment of | CK | Conventional method | Large particles A | Large particles B | Large particles C |
| Yield (kg/mu) | 1351.92 | 1777.87 | 1848.55 | 1839.12 | 1888.99 |
| Single potato knot | 1.78 | 2.33 | 1.78 | 1.77 | 1.78 |
| Single potato weight (kg) | 0.41 | 0.53 | 0.57 | 0.55 | 0.62 |
| Fresh weight of overground part (strain) | 0.40 | 0.61 | 0.62 | 0.63 | 0.65 |
| Fresh weight of underground part (plant) | 0.41 | 0.54 | 0.56 | 0.55 | 0.57 |
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention.
Claims (5)
1. The large-particle fertilizer applied to the sweet potatoes is characterized by being prepared from the following raw materials in parts by weight: 30-40 parts of potassium sulfate, 8-12 parts of composite nitrogenous fertilizer, 3-5 parts of composite phosphate fertilizer, 1-2 parts of magnesium-calcium-ferrum-silicon-zinc microelements, 0.5-1 part of nano biomass carbon and 40-50 parts of plant ash;
the large-grain fertilizer is prepared according to a soil fertility formula, 5-20 g of large-grain fertilizer with different weights is produced by taking a 3500 strain of sweet potato, and the diameter is 2-10cm;
and wrapping a layer of porous heat-shrinkable degradable polyethylene film on the formed large-grain fertilizer.
2. The large granule fertilizer for sweet potato as claimed in claim 1, wherein the shape of the large granule fertilizer is any one of sphere, ellipsoid and cylinder.
3. The large-particle fertilizer applied to sweet potatoes according to claim 1, wherein the composite nitrogen fertilizer is composed of the following raw materials in percentage by weight: 37 to 40 percent of urea, 55 to 58 percent of ammonium chloride, 2.5 to 3.0 percent of dilute sulfuric acid, 0.8 to 1.0 percent of synthetic ammonia, 0.8 to 1.0 percent of ammonium sulfate, 0.2 to 0.4 percent of zinc sulfate, 0.1 to 0.3 percent of intelligent peptide and 0.1 to 0.2 percent of surfactant.
4. The large-particle fertilizer applied to sweet potatoes according to claim 1, wherein the compound phosphate fertilizer is composed of the following raw materials in percentage by weight: 0.3 to 0.4 percent of soluble chitosan, 2 to 4 percent of fulvic acid, 80 to 85 percent of 85 weight percent of industrial phosphoric acid, 1 to 2 percent of synergistic agent and 10 to 16 percent of water.
5. The large-particle fertilizer applied to sweet potatoes according to claim 1, wherein the nano biomass carbon is prepared from bamboo, coconut shells, hemp stems and eucalyptus willow by calcining at 900 ℃ to obtain four different nano biomass carbons, and mixing the four nano biomass carbons according to a mass ratio of 1:1:1:1 and sieving the four nano biomass carbons with a 200-mesh sieve.
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| CN2022101497779 | 2022-02-18 | ||
| CN202210149777.9A CN114292143A (en) | 2022-02-18 | 2022-02-18 | Large-particle fertilizer applied to sweet potatoes |
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| CN1257136C (en) * | 2004-09-29 | 2006-05-24 | 山东农业大学 | Coated controlled release fertilizer of degradable film prepared by reclaiming thermoplastic resin |
| CN100567222C (en) * | 2007-11-09 | 2009-12-09 | 山东金正大生态工程股份有限公司 | Reclaim the production method of thermoplastic resin and thermosetting resin multi-layer composite coated controlled-release fertilizer |
| CN101709018B (en) * | 2009-12-15 | 2012-05-23 | 尹明灯 | Large-particle fertilizer |
| CN104341207A (en) * | 2013-07-23 | 2015-02-11 | 山东恩宝生物科技有限公司 | Dual-layer sustain-released fertilizer capable of preventing peanut underground pests |
| CN112062637A (en) * | 2020-09-21 | 2020-12-11 | 中国科学院沈阳应用生态研究所 | Large-particle long-acting fertilizer and granulation method thereof |
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