CN112409090A - Full-water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters and preparation method thereof - Google Patents
Full-water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters and preparation method thereof Download PDFInfo
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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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- 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
- C05G3/30—Anti-agglomerating additives; Anti-solidifying additives
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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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Abstract
The invention relates to a full-water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters and a preparation method thereof, belonging to the technical field of fertilizer production and application. The compound fertilizer comprises, by weight, 10-12 parts of monoammonium phosphate, 43-46 parts of potassium sulfate, 7-8 parts of ammonium sulfate, 30-34 parts of urea, 3-5 parts of potassium chloride, 2-8 parts of organic matters and 0.2-0.5 part of water-soluble anti-caking agents. The organic matter and the major elements are prepared into the compound fertilizer by a high tower granulation technology, and the organic matter and the nutrient components required by plants in the compound fertilizer are reasonably matched, so that the nutrient requirement of crops in the fruit swelling period can be met, and the yield and the quality are improved. Meanwhile, the raw materials of the compound fertilizer are cheap and easy to obtain, are completely dissolved in water, are suitable for facility agriculture such as spray irrigation and burette, and save labor force. The compound fertilizer is not easy to harden and pulverize, is easy to store and transport, and has good market prospect.
Description
Technical Field
The invention belongs to the technical field of fertilizer production and application, and particularly relates to a full-water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters and a preparation method thereof.
Background
In recent decades, with the rapid development of modern agriculture, the fertilizer consumption is increased year by year, rural labor is lost, the scale of facility agriculture is gradually enlarged, and the demand for fertilizer which can be used for droppers and spray irrigation equipment is gradually increased. Currently, water soluble fertilizer type products are already on the market. Wherein, macroelement water-soluble fertilizer powder or aqueous products have high cost; the granular water soluble fertilizer has high nutrient content, but is slowly dissolved in the actual use process, and is easy to generate flocculation and sedimentation phenomena, so that equipment is blocked; the other type of particle water-soluble fertilizer contains organic matters, but the nitrogen, phosphorus and potassium contents are low, about 20%, and the nutrient requirements of crops cannot be met. In recent years, awareness of farmers in protecting soil is strengthened year by year, and the compound fertilizer containing organic matter synergistic substances is favored by the farmers more and more. However, the organic matter has high viscosity, so that the fertilizer has low particle strength when added into the compound fertilizer, the product is easy to harden and pulverize, and the production cannot be normally carried out. In conclusion, the existing compound fertilizer product is lack of organic matters, is completely soluble in water and has high nutrient content, namely, the product which can meet the nutritional requirements of crops, and has the functions of promoting the growth of the crops, improving the utilization rate of the fertilizer and protecting the soil is not available.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a full water-soluble middle-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic substances; the second purpose is to provide a preparation method of the full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters.
In order to achieve the purpose, the invention provides the following technical scheme:
1. the full-water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters comprises the following components in parts by weight: 10-12 parts of monoammonium phosphate, 43-46 parts of potassium sulfate, 7-8 parts of ammonium sulfate, 30-34 parts of urea, 3-5 parts of potassium chloride, 2-8 parts of organic matters and 0.2-0.5 part of water-soluble anti-caking agent.
Preferably, the compound fertilizer comprises the following components in parts by weight: 12 parts of monoammonium phosphate, 46 parts of potassium sulfate, 8 parts of ammonium sulfate, 34 parts of urea, 5 parts of potassium chloride, 8 parts of organic matters and 0.5 part of water-soluble anti-caking agent.
Preferably, the compound fertilizer comprises the following components in parts by weight: 10 parts of monoammonium phosphate, 44 parts of potassium sulfate, 7 parts of ammonium sulfate, 30 parts of urea, 3 parts of potassium chloride, 2 parts of organic matters and 0.2 part of water-soluble anti-caking agent.
Preferably, the compound fertilizer comprises the following components in parts by weight: 10.5 parts of monoammonium phosphate, 43.8 parts of potassium sulfate, 7.5 parts of ammonium sulfate, 32.8 parts of urea, 3.5 parts of potassium chloride, 6.2 parts of organic matters and 0.4 part of water-soluble anti-caking agent.
Preferably, the compound fertilizer comprises the following components in parts by weight: 10.1 parts of monoammonium phosphate, 45.5 parts of potassium sulfate, 7.2 parts of ammonium sulfate, 33.5 parts of urea, 4 parts of potassium chloride, 5 parts of organic matters and 0.3 part of water-soluble anti-caking agent.
Preferably, the content of available nitrogen in the monoammonium phosphate is 12 wt%, and the content of phosphorus pentoxide is 60 wt%; the potassium oxide content in the potassium sulfate is 53 wt%; the effective nitrogen content in the ammonium sulfate is 20.5 wt%; the effective nitrogen content in the urea is 46 wt%; the potassium oxide content in the potassium chloride is 60 wt%.
Preferably, the organic matter is at least one of fulvic acid with an effective component content of 60 wt%, humic acid with an effective component content of 60 wt% or amino acid with an effective component content of 80 wt%.
2. The preparation method of the full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters comprises the following steps:
(1) weighing monoammonium phosphate, potassium sulfate, ammonium sulfate, urea, potassium chloride, organic matters and a water-soluble anti-caking agent according to a formula;
(2) conveying urea and ammonium sulfate to a urea melting tank, melting at 130-135 ℃, and overflowing the melted urea solution to a primary mixing tank;
(3) uniformly mixing part of potassium sulfate, potassium chloride and monoammonium phosphate, conveying the mixture to a primary mixing tank, uniformly mixing the mixture with the urea solution in the step (2) at the temperature of 110-120 ℃, and then flowing into a secondary mixing tank;
(4) and (3) conveying the rest part of potassium sulfate and organic matters to a secondary mixing tank, uniformly mixing the potassium sulfate and the organic matters with the urea solution treated in the step (3) at the temperature of 95-110 ℃, then flowing out, passing through an emulsifier, and sequentially granulating, cooling, screening and adding a water-soluble anti-caking agent for treatment.
The invention has the beneficial effects that: the invention provides a full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters and a preparation method thereof. The organic matters are easy to be absorbed and utilized by plants, the development of plant root systems can be promoted, the root system activity is improved, the photosynthesis of the plants is enhanced, the stress resistance of the plants is enhanced, the yield is increased, the quality is enhanced, the physical and chemical properties of the soil can be conditioned by the organic matters, the biological environment of the soil is improved, the fertility condition of the soil is improved, and the effect of improving the soil quality is achieved. Meanwhile, the raw materials of the compound fertilizer are cheap and easy to obtain, are completely dissolved in water, are suitable for facility agriculture such as spray irrigation and burette, and save labor force. The compound fertilizer is not easy to harden and pulverize, is easy to store and transport, and has good market prospect.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Example 1
A full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters comprises the following components in parts by weight: 12 parts of monoammonium phosphate with the effective nitrogen content of 12 wt%, 60 wt% of phosphorus pentoxide, 46 parts of potassium sulfate with the potassium oxide content of 53 wt%, 8 parts of ammonium sulfate with the effective nitrogen content of 20.5 wt%, 34 parts of urea with the effective nitrogen content of 46 wt%, 5 parts of potassium chloride with the potassium oxide content of 60 wt%, 8 parts of humic acid with the effective component content of 60 wt% and 0.5 part of water-soluble anti-caking agent. The N content in the compound fertilizer is 16.49 wt% and P is calculated by 1 ton2O5Content 6.34 wt%, K2The content of O is 24.12 wt%, the content of organic active ingredients is 4.23 wt%, the content of total nutrients is 46.95 wt%, and the content of water-insoluble substances is less than 0.01 wt%. The pH value of the compound fertilizer is 4.39, and the strength of the compound fertilizer is 50.32. After the fertilizer is dissolved in water with the hardness of more than 800 ℃ according to a certain proportion, the water solution is clear without flocculation and precipitation, the height of the fertilizer is 20 layers, and no caking and no pulverization occur within 6 months. The compound is prepared by the following method:
(1) weighing monoammonium phosphate, potassium sulfate, ammonium sulfate, urea, potassium chloride, humic acid and water-soluble anti-caking agent according to a formula;
(2) conveying urea and ammonium sulfate to a urea melting tank, melting at 134 ℃, and overflowing the melted urea solution to a primary mixing tank;
(3) uniformly mixing part of potassium sulfate, potassium chloride and monoammonium phosphate, conveying the mixture to a primary mixing tank, uniformly mixing the mixture with the urea solution in the step (2) at 116 ℃, and then flowing into a secondary mixing tank;
(4) and (3) transporting the rest part of potassium sulfate and humic acid to a secondary mixing tank, uniformly mixing the potassium sulfate and humic acid with the urea solution treated in the step (3) at 105 ℃, then flowing out, passing through an emulsifier, sequentially granulating, cooling, screening and adding a water-soluble anti-caking agent for treatment, and thus obtaining the fertilizer.
Example 2
A full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters comprises the following components in parts by weight: 10 parts of monoammonium phosphate with the effective nitrogen content of 12 wt%, 60 wt% of phosphorus pentoxide, 44 parts of potassium sulfate with the potassium oxide content of 53 wt%, 7 parts of ammonium sulfate with the effective nitrogen content of 20.5 wt%, 30 parts of urea with the effective nitrogen content of 46 wt%, 3 parts of potassium chloride with the potassium oxide content of 60 wt%, 2 parts of fulvic acid with the effective component content of 60 wt% and 0.2 part of water-soluble anti-caking agent. The N content in the compound fertilizer is 17.08 wt% and P is calculated by 1 ton2O5Content 6.23 wt%, K2The content of O is 26.11 weight percent, the content of organic matter active ingredients is 1.25 weight percent, the content of total nutrients is 49.42 weight percent, and the content of water-insoluble substances is less than 0.01 weight percent. The pH value of the compound fertilizer is 4.33, and the fertilizer strength is 47.45. After the fertilizer is dissolved in water with the hardness of more than 800 ℃ according to a certain proportion, the water solution is clear without flocculation and precipitation, the height of the fertilizer is 20 layers, and no caking and no pulverization occur within 6 months. The compound is prepared by the following method:
(1) weighing monoammonium phosphate, potassium sulfate, ammonium sulfate, urea, potassium chloride, fulvic acid and water-soluble anti-caking agent according to a formula;
(2) conveying urea and ammonium sulfate to a urea melting tank, melting at 132 ℃, and overflowing the melted urea solution to a primary mixing tank;
(3) uniformly mixing part of potassium sulfate, potassium chloride and monoammonium phosphate, conveying the mixture to a primary mixing tank, uniformly mixing the mixture with the urea solution in the step (2) at 114 ℃, and then flowing into a secondary mixing tank;
(4) and (3) conveying the rest part of potassium sulfate and fulvic acid to a secondary mixing tank, uniformly mixing the potassium sulfate and fulvic acid with the urea solution treated in the step (3) at 101 ℃, then flowing out, passing through an emulsifier, and sequentially granulating, cooling, screening and adding a water-soluble anti-caking agent for treatment.
Example 3
A full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters comprises the following components in parts by weight: 12 weight percent of available nitrogen, 10.5 parts of monoammonium phosphate with 60 weight percent of phosphorus pentoxide, 43.8 parts of potassium sulfate with 53 weight percent of potassium oxide, 7.5 parts of ammonium sulfate with 20.5 weight percent of available nitrogen, 32.8 parts of urea with 46 weight percent of available nitrogen, 3.5 parts of potassium chloride with 60 weight percent of potassium oxide, 3.2 parts of fulvic acid with 60 weight percent of available component, 3 parts of humic acid with 60 weight percent of available component and 0.4 part of water-soluble anti-caking agent. The N content in the compound fertilizer is 17.08 wt% and P is calculated by 1 ton2O5Content 6.01 wt%, K2The content of O is 24.17 weight percent, the content of organic matter active ingredients is 3.55 weight percent, the content of total nutrients is 47.26 weight percent, and the content of water-insoluble substances is less than 0.01 weight percent. The pH value of the compound fertilizer is 4.45, and the fertilizer strength is 48.79. After the fertilizer is dissolved in water with the hardness of more than 800 ℃ according to a certain proportion, the water solution is clear without flocculation and precipitation, the height of the fertilizer is 20 layers, and no caking and no pulverization occur within 6 months. The compound is prepared by the following method:
(1) weighing monoammonium phosphate, potassium sulfate, ammonium sulfate, urea, potassium chloride, fulvic acid, humic acid and water-soluble anti-caking agent according to a formula;
(2) conveying urea and ammonium sulfate to a urea melting tank, melting at 135 ℃, and overflowing a molten urea solution to a primary mixing tank;
(3) uniformly mixing part of potassium sulfate, potassium chloride and monoammonium phosphate, conveying the mixture to a primary mixing tank, uniformly mixing the mixture with the urea solution in the step (2) at 119 ℃, and then flowing into a secondary mixing tank;
(4) and (3) transporting the rest part of potassium sulfate, fulvic acid and humic acid to a secondary mixing tank, uniformly mixing the potassium sulfate, fulvic acid and humic acid with the urea solution treated in the step (3) at 108 ℃, then flowing out, passing through an emulsifier, and sequentially granulating, cooling, screening and adding a water-soluble anti-caking agent for treatment.
Example 4
A full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters comprises the following components in parts by weight: the fertilizer comprises, by weight, 12 parts of monoammonium phosphate with an effective nitrogen content of 12%, 60% of phosphorus pentoxide, 45.5 parts of potassium sulfate with a potassium oxide content of 53%, 7.2 parts of ammonium sulfate with an effective nitrogen content of 20.5%, 33.5 parts of urea with an effective nitrogen content of 46%, 4 parts of potassium chloride with a potassium oxide content of 60%, 5 parts of amino acid with an effective component content of 80%, and 0.3 part of a water-soluble anti-caking agent. The N content in the compound fertilizer is 17.14 wt% and P is calculated by 1 ton2O5Content 5.74 wt%, K2The content of O is 25.11 weight percent, the content of organic matter active ingredients is 3.78 weight percent, the content of total nutrients is 47.99 weight percent, and the content of water-insoluble substances is less than 0.01 weight percent. The pH value of the compound fertilizer is 4.37, and the fertilizer strength is 51.53. After the fertilizer is dissolved in water with the hardness of more than 800 ℃ according to a certain proportion, the water solution is clear without flocculation and precipitation, the height of the fertilizer is 20 layers, and no caking and no pulverization occur within 6 months. The compound is prepared by the following method:
(1) weighing monoammonium phosphate, potassium sulfate, ammonium sulfate, urea, potassium chloride, amino acid and water-soluble anti-caking agent according to a formula;
(2) conveying urea and ammonium sulfate to a urea melting tank, melting at 130 ℃, and overflowing the melted urea solution to a primary mixing tank;
(3) uniformly mixing part of potassium sulfate, potassium chloride and monoammonium phosphate, conveying the mixture to a primary mixing tank, uniformly mixing the mixture with the urea solution in the step (2) at 111 ℃, and then flowing into a secondary mixing tank;
(4) and (3) conveying the rest part of potassium sulfate and amino acid to a secondary mixing tank, uniformly mixing the potassium sulfate and the amino acid with the urea solution treated in the step (3) at 98 ℃, then flowing out, passing through an emulsifier, and sequentially granulating, cooling, screening and adding a water-soluble anti-caking agent for treatment.
Example 5
Fertilizer efficiency test-watermelon field test
In order to determine the effect of the organic matter-containing fully water-soluble intermediate-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer on improvement of the physicochemical properties of soil, regulation of plant growth and fruit enlargement, experimental studies were carried out using the organic matter-containing fully water-soluble intermediate-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer in example 1 of the present invention, and the organic matter-containing fully water-soluble intermediate-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizers in other examples had the same experimental effects.
The test is set in the town of pine forest in Jiangjin area of Chongqing city, and the crop to be tested is kylin watermelon. The total number of the tests is 6, each treatment is repeated for 3 times, the total number is 18 cells, the cells are randomly arranged, and each area is 18m220 plants are planted in each cell, the plant-row spacing is 0.5m multiplied by 3m, one melon is reserved in each plant, and protective rows are arranged around the plants. A fertilizing mode: each mu is 15kg per time, and drip irrigation is carried out; fertilizing time: the swelling period of the watermelon. The actual yield was recorded at harvest. The fertilization scheme is as follows:
u1: adding 100 times of water into the compound fertilizer in the example 1, and applying the mixture by a dropper for 2 times at intervals of 14 days;
u2: adding 100 times of water by weight into the compound fertilizer in the embodiment 1, applying by a dropper for 1 time, and flushing and applying the same amount of clear water after 14 days;
a: adding 100 times of water by weight of urea with the mass of compound fertilizer and the like in the example 1, and applying by a dropper for 2 times at intervals of 14 days;
CK: the same amount of clear water is applied for 2 times at intervals of 14 days.
The results are shown in tables 1 to 4.
TABLE 1 Effect of different fertilisation treatments on watermelon yield
TABLE 2 influence of different treatments on the sugar content of watermelon
TABLE 3 Effect of different treatments on agronomic traits of watermelon
TABLE 4 Effect of different treatments on soil organic matter
As can be seen from Table 1, the compound fertilizer in the example 1 of the invention is sprayed for 2 times in the fruit swelling period of the watermelon by U1 treatment, the weight of a single fruit is 5.30kg, and the yield per mu reaches 3338.4 kg; u2 is treated and sprayed with the compound fertilizer of the invention in the embodiment 1 for 1 time, the weight of a single fruit is 4.90kg, and the yield per mu reaches 3084.6 kg. When the compound fertilizer in the embodiment 1 of the invention is sprayed for 2 times, the yield is increased by 14.7 percent compared with the conventional fertilizer (urea is sprayed singly) and is increased by 22.8 percent compared with the clear water treatment; the yield of the compound fertilizer is increased by 6.0 percent compared with the conventional fertilizer after 1 time of spraying, the yield of the compound fertilizer is increased by 13.5 percent compared with the yield of the compound fertilizer treated by clear water, and the yield increasing effect of the compound fertilizer in the embodiment 1 of the invention is obvious after spraying.
As can be seen from Table 2, when the compound fertilizer in the embodiment 1 of the invention is sprayed for 2 times during the swelling period of the watermelon by U1 treatment, the content of the heart sugar reaches 13.06mg/mL, and the content of the rim sugar reaches 8.21 mg/mL; the compound fertilizer in the embodiment 1 of the invention is sprayed for 1 time after the treatment of U2 in the fruit swelling period of the watermelon, the content of the heart sugar reaches 12.60mg/mL, and the content of the side sugar reaches 7.66 mg/mL. When the compound fertilizer in the embodiment 1 of the invention is sprayed for 2 times, the sugar content is increased by 15.4 percent compared with the conventional fertilizer (urea is sprayed singly), the while sugar content is increased by 11.8 percent, the sugar content is increased by 15.4 percent compared with the clear water treatment, and the while sugar content is increased by 16.1 percent; after 1 time of spraying, the sugar content is increased by 8.5 percent compared with the conventional fertilization, the sugar content is increased by 4.3 percent, and the sugar content is increased by 11.4 percent and 8.2 percent compared with the yield increase of clear water treatment. The effect of increasing the sweetness of the watermelon by spraying the compound fertilizer in the embodiment 1 of the invention is obvious.
As can be seen from tables 3-4, the chlorophyll content of the watermelon leaves and the organic matter content of the soil can be obviously improved by spraying the compound fertilizer in the embodiment 1 for 1 time or 2 times in the fruit swelling period of the watermelons.
In conclusion, the compound fertilizer combines organic matters with traditional inorganic salts, and uses a high-tower technology to produce the full-water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer, the raw materials are cheap and easy to obtain, the compound fertilizer is fully soluble in water, and is suitable for facility agriculture such as spray irrigation, burette and the like, and the labor force is saved; but also can promote the growth of crops, increase the quality of the crops and improve the income of farmers; improving the biological environment of soil; the product is not easy to harden and pulverize, is easy to store and transport, and has good market prospect.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (8)
1. The full-water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters is characterized by comprising the following components in parts by weight: 10-12 parts of monoammonium phosphate, 43-46 parts of potassium sulfate, 7-8 parts of ammonium sulfate, 30-34 parts of urea, 3-5 parts of potassium chloride, 2-8 parts of organic matters and 0.2-0.5 part of water-soluble anti-caking agent.
2. The full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters as claimed in claim 1, wherein the compound fertilizer comprises the following components in parts by weight: 12 parts of monoammonium phosphate, 46 parts of potassium sulfate, 8 parts of ammonium sulfate, 34 parts of urea, 5 parts of potassium chloride, 8 parts of organic matters and 0.5 part of water-soluble anti-caking agent.
3. The full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters as claimed in claim 1, wherein the compound fertilizer comprises the following components in parts by weight: 10 parts of monoammonium phosphate, 44 parts of potassium sulfate, 7 parts of ammonium sulfate, 30 parts of urea, 3 parts of potassium chloride, 2 parts of organic matters and 0.2 part of water-soluble anti-caking agent.
4. The full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters as claimed in claim 1, wherein the compound fertilizer comprises the following components in parts by weight: 10.5 parts of monoammonium phosphate, 43.8 parts of potassium sulfate, 7.5 parts of ammonium sulfate, 32.8 parts of urea, 3.5 parts of potassium chloride, 6.2 parts of organic matters and 0.4 part of water-soluble anti-caking agent.
5. The full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters as claimed in claim 1, wherein the compound fertilizer comprises the following components in parts by weight: 10.1 parts of monoammonium phosphate, 45.5 parts of potassium sulfate, 7.2 parts of ammonium sulfate, 33.5 parts of urea, 4 parts of potassium chloride, 5 parts of organic matters and 0.3 part of water-soluble anti-caking agent.
6. The full water-soluble middle-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters as claimed in any one of claims 1 to 5, wherein the available nitrogen content in the monoammonium phosphate is 12 wt%, and the phosphorus pentoxide content is 60 wt%; the potassium oxide content in the potassium sulfate is 53 wt%; the effective nitrogen content in the ammonium sulfate is 20.5 wt%; the effective nitrogen content in the urea is 46 wt%; the potassium oxide content in the potassium chloride is 60 wt%.
7. The full water-soluble middle-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters as claimed in any one of claims 1 to 5, wherein the organic matters are at least one of fulvic acid with an effective component content of 60 wt%, humic acid with an effective component content of 60 wt% or amino acid with an effective component content of 80 wt%.
8. The method for preparing the full water-soluble medium-nitrogen low-phosphorus high-potassium urea-sulfur-based compound fertilizer containing organic matters, which is characterized by comprising the following steps of:
(1) weighing monoammonium phosphate, potassium sulfate, ammonium sulfate, urea, potassium chloride, organic matters and a water-soluble anti-caking agent according to a formula;
(2) conveying urea and ammonium sulfate to a urea melting tank, melting at 130-135 ℃, and overflowing the melted urea solution to a primary mixing tank;
(3) uniformly mixing part of potassium sulfate, potassium chloride and monoammonium phosphate, conveying the mixture to a primary mixing tank, uniformly mixing the mixture with the urea solution in the step (2) at the temperature of 110-120 ℃, and then flowing into a secondary mixing tank;
(4) and (3) conveying the rest part of potassium sulfate and organic matters to a secondary mixing tank, uniformly mixing the potassium sulfate and the organic matters with the urea solution treated in the step (3) at the temperature of 95-110 ℃, then flowing out, passing through an emulsifier, and sequentially granulating, cooling, screening and adding a water-soluble anti-caking agent for treatment.
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| CN102674959A (en) * | 2012-04-27 | 2012-09-19 | 安徽天之野生物科技有限公司 | Fully-water soluble fertilizer |
| CN107188656A (en) * | 2016-10-26 | 2017-09-22 | 江西先益农生物科技有限公司 | A kind of pulvis organic-inorganic water-soluble fertilizer and preparation method thereof |
| CN111187110A (en) * | 2019-11-29 | 2020-05-22 | 新洋丰农业科技股份有限公司 | Clear liquid type urine-based particle water-soluble fertilizer and preparation method thereof |
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2020
- 2020-11-24 CN CN202011333025.5A patent/CN112409090A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674959A (en) * | 2012-04-27 | 2012-09-19 | 安徽天之野生物科技有限公司 | Fully-water soluble fertilizer |
| CN107188656A (en) * | 2016-10-26 | 2017-09-22 | 江西先益农生物科技有限公司 | A kind of pulvis organic-inorganic water-soluble fertilizer and preparation method thereof |
| CN111187110A (en) * | 2019-11-29 | 2020-05-22 | 新洋丰农业科技股份有限公司 | Clear liquid type urine-based particle water-soluble fertilizer and preparation method thereof |
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