NRPC synergistic high-absorption fertilizer and preparation method thereof

Abstract

The invention provides an NRPC synergistic high-absorptivity fertilizer and a preparation method thereof, and relates to the technical field of compound fertilizers. The invention relates to an NRPC synergistic high-absorption fertilizer. The fertilizer is prepared from the following raw materials in parts by weight: 20-25 parts of ardealite, 10-12 parts of fly ash, 14-18 parts of urea, 6-8 parts of ammonium molybdate, 10-12 parts of potassium sulfate, 4-6 parts of magnesium sulfate, 12-15 parts of a soil conditioner, 3-5 parts of manganese sulfate, 2-4 parts of zinc sulfate, 3-5 parts of borax, 2-4 parts of ferrous sulfate, 1-3 parts of a slow release agent, 2-4 parts of an absorption enhancer, 1-3 parts of a synergist and a certain amount of a wrapping material. According to the invention, through the synergistic effect of nitrogen, phosphorus, potassium and various trace elements, the fertilizer can be more effectively absorbed in the plant growth process, the fertilizer waste is avoided, and the high-absorption fertilizer reduces the environmental pollution caused by excessive fertilization, especially the problem of water eutrophication; and the release rate of the fertilizer can be controlled through the wrapping effect of the wrapping material, so that the balanced supply of the fertilizer in the plant growth cycle is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of compound fertilizers, in particular to a NRPC synergistic high-absorption fertilizer and a preparation method thereof. Background Art

[0002] Fertilizers are substances that can provide one or more essential nutrients for plants, improve soil properties, and increase soil fertility. There are many types of fertilizers, including chemical fertilizers such as nitrogen, phosphorus, and potassium, organic fertilizers such as soybean meal, animal manure, and agricultural waste, biological fertilizers such as biological bacteria, and medium and trace element fertilizers such as silicon, magnesium, iron, boron, and selenium.

[0003] Chemical fertilizers can provide necessary nutrients for crop growth and play a vital role in the yield and quality of agricultural products. They account for a large share of agricultural industry investment and are likely to have an impact on the soil and natural environment.

[0004] Different crops have different requirements for fertilizers due to their different growth habits and growth stages. Therefore, it is necessary to study different fertilizers in combination with different crop varieties to improve the quality and growth rate of crops and increase the nutritional and health value of crops.

[0005] Therefore, those skilled in the art provide a NRPC synergistic high-absorption fertilizer and a preparation method thereof to solve the problems raised in the above background technology. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a NRPC synergistic high-absorption fertilizer and a preparation method thereof. Through the synergistic effect of nitrogen, phosphorus, potassium and various trace elements, the fertilizer can be more effectively absorbed during the growth of plants, avoiding fertilizer waste. The high-absorption fertilizer reduces environmental pollution caused by excessive fertilization, especially the problem of eutrophication of water bodies.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A NRPC synergistic high-absorption fertilizer is composed of the following raw materials in parts by weight: 20-25 parts of phosphogypsum, 10-12 parts of fly ash, 14-18 parts of urea, 6-8 parts of ammonium molybdate, 10-12 parts of potassium sulfate, 4-6 parts of magnesium sulfate, 12-15 parts of soil conditioner, 3-5 parts of manganese sulfate, 2-4 parts of zinc sulfate, 3-5 parts of borax, 2-4 parts of ferrous sulfate, 1-3 parts of slow-release agent, 2-4 parts of absorption promoter, 1-3 parts of synergist and a certain amount of packaging material.

[0011] Preferably, the phosphogypsum is solid waste discharged from a wet-process phosphoric acid device, and its water content is less than 8%.

[0012] Preferably, the fly ash is one or a combination of two or more of fly ash collected from coal-fired boiler flue gas after dust removal, waste slag discharged after flue gas desulfurization, and bottom ash.

[0013] Preferably, the sustained-release agent is a complex of a urease inhibitor and a nitrifying bacteria inhibitor, the urease inhibitor includes at least one of phenylphosphine diamide, benzoquinone, and N-butyl-thiophosphoric triamide, and the nitrifying bacteria inhibitor includes at least one of dicyandiamide, thiourea, 2-amino-4-chloro-6-methylpyrimidine, 3,4-dimethylpyrazole, and 3,4-dimethylphosphopyrazole.

[0014] Preferably, the absorption enhancer includes organic substances, microorganisms, natural minerals (such as lime, silica, etc.), or special high-absorbency polymers.

[0015] Preferably, the synergist is a plant growth regulator, an inorganic or organic trace element, which can help improve the absorption efficiency of the fertilizer.

[0016] Preferably, the packaging material is a polymer or a resin, which is used to control the release rate of the fertilizer so that it can function in the soil for a longer period of time.

[0017] Preferably, a method for preparing a NRPC synergistic high-absorption fertilizer comprises the following steps:

[0018] Step S1. Evenly mix phosphogypsum, fly ash, urea, ammonium molybdate, potassium sulfate, magnesium sulfate, soil conditioner, manganese sulfate, zinc sulfate, borax, ferrous sulfate and soil conditioner to obtain a mixture;

[0019] Step S2. adding a slow-release agent, an absorption enhancer and a synergist into the above mixture, stirring and mixing evenly to obtain an initial fertilizer;

[0020] Step S3. using a polymer or other material to encapsulate the fertilizer;

[0021] Step S4. Treating the fertilizer at a specific temperature so that it reacts with the absorption enhancer or synergist to form a composite structure that can enhance absorption efficiency;

[0022] Step S5. Cooling and drying the fertilizer after the high temperature reaction to ensure the stability of the fertilizer and facilitate subsequent storage;

[0023] Step S6. Then, as required, the fertilizer is made into granules or other forms to obtain the high-absorption fertilizer for application.

[0024] (III) Beneficial effects

[0025] The present invention provides a NRPC synergistic high-absorption fertilizer and a preparation method thereof, which has the following beneficial effects:

[0026] 1. The present invention provides a NRPC synergistic high-absorption fertilizer and a preparation method thereof. Through the synergistic effect of nitrogen, phosphorus, potassium and various trace elements, the fertilizer can be more effectively absorbed during the growth of plants to avoid fertilizer waste. The high-absorption fertilizer reduces environmental pollution caused by excessive fertilization, especially the problem of eutrophication of water bodies. The release rate of the fertilizer can be controlled by the wrapping effect of the wrapping material to ensure the balanced supply of fertilizer during the plant growth cycle.

[0027] 2. The present invention provides a NRPC synergistic high-absorption fertilizer and a preparation method thereof. The fertilizer can improve the absorption efficiency of fertilizers by plants and reduce fertilizer waste. By combining the fertilizer with an absorption enhancer or a synergist, it can ensure that plants obtain the required nutrients at different growth stages. Through a reasonable ratio of nitrogen, phosphorus, potassium and other elements, the high-absorption fertilizer can provide the comprehensive nutrition required by plants, promote root development, plant photosynthesis, and the development of fruits and seeds. The ingredients in the high-absorption fertilizer can improve the physical and chemical properties of the soil, and increase the water retention, air permeability and fertility of the soil. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] The embodiment of the present invention provides an NRPC synergistic high-absorption fertilizer, which is composed of the following raw materials in parts by weight: 20 parts of phosphogypsum, 10 parts of fly ash, 14 parts of urea, 6 parts of ammonium molybdate, 10 parts of potassium sulfate, 4 parts of magnesium sulfate, 12 parts of soil conditioner, 3 parts of manganese sulfate, 2 parts of zinc sulfate, 3 parts of borax, 2 parts of ferrous sulfate, 1 part of slow-release agent, 2 parts of absorption promoter, 1 part of synergist and a certain amount of packaging material.

[0031] The phosphogypsum is a solid waste discharged from a wet phosphoric acid device, and its water content is less than 8%. The fly ash is one of the fly ash collected from the flue gas of a coal-fired boiler after dust removal, the waste slag discharged after the flue gas is desulfurized, and the bottom ash. The slow-release agent is a complex composed of a urease inhibitor and a nitrifying bacteria inhibitor. The urease inhibitor includes phenylphosphine diamide and benzoquinone. The nitrifying bacteria inhibitor includes dicyandiamide, thiourea, and 2-amino-4-chloro-6-methylpyrimidine. The absorption promoter includes organic matter, microorganisms, natural minerals (such as lime, silica, etc.), or special high-absorption polymers. The synergist uses a plant growth regulator to help improve the absorption efficiency of the fertilizer. The packaging material uses a polymer or resin to control the release rate of the fertilizer so that it can play a role in the soil for a longer time.

[0032] The preparation method of the NRPC synergistic high-absorption fertilizer comprises the following steps:

[0033] Step S1. Evenly mix phosphogypsum, fly ash, urea, ammonium molybdate, potassium sulfate, magnesium sulfate, soil conditioner, manganese sulfate, zinc sulfate, borax, ferrous sulfate and soil conditioner to obtain a mixture;

[0034] Step S2. adding a slow-release agent, an absorption enhancer and a synergist into the above mixture, stirring and mixing evenly to obtain an initial fertilizer;

[0035] Step S3. using a polymer or other material to encapsulate the fertilizer;

[0036] Step S4. Treating the fertilizer at a specific temperature so that it reacts with the absorption enhancer or synergist to form a composite structure that can enhance absorption efficiency;

[0037] Step S5. Cooling and drying the fertilizer after the high temperature reaction to ensure the stability of the fertilizer and facilitate subsequent storage;

[0038] Step S6. Then, as required, the fertilizer is made into granules or other forms to obtain the high-absorption fertilizer for application.

[0039] Embodiment 2:

[0040] The embodiment of the present invention provides a NRPC synergistic high-absorption fertilizer, which is composed of the following raw materials in parts by weight: 23 parts of phosphogypsum, 11 parts of fly ash, 16 parts of urea, 7 parts of ammonium molybdate, 11 parts of potassium sulfate, 5 parts of magnesium sulfate, 13 parts of soil conditioner, 4 parts of manganese sulfate, 3 parts of zinc sulfate, 4 parts of borax, 3 parts of ferrous sulfate, 2 parts of slow-release agent, 3 parts of absorption promoter, 2 parts of synergist and a certain amount of packaging material.

[0041] The phosphogypsum is a solid waste discharged from a wet phosphoric acid device, and its water content is less than 8%. The fly ash is one of the fly ash collected from the flue gas of a coal-fired boiler after dust removal, the waste slag discharged after the flue gas is desulfurized, and the bottom ash. The slow-release agent is a complex composed of a urease inhibitor and a nitrifying bacteria inhibitor. The urease inhibitor includes phenylphosphine diamide and N-butyl-thiophosphoric acid triamide. The nitrifying bacteria inhibitor includes dicyandiamide, thiourea, and 3,4-dimethylpyrazole. The absorption promoter includes organic matter, microorganisms, natural minerals (such as lime, silica, etc.), or special high-absorption polymers. The synergist uses plant growth regulators, inorganic or organic trace elements, which can help improve the absorption efficiency of fertilizers. The packaging material uses polymers or resins to control the release rate of fertilizers so that they can play a role in the soil for a longer time.

[0042] The preparation method of the NRPC synergistic high-absorption fertilizer comprises the following steps:

[0043] Step S1. Evenly mix phosphogypsum, fly ash, urea, ammonium molybdate, potassium sulfate, magnesium sulfate, soil conditioner, manganese sulfate, zinc sulfate, borax, ferrous sulfate and soil conditioner to obtain a mixture;

[0044] Step S2. adding a slow-release agent, an absorption enhancer and a synergist into the above mixture, stirring and mixing evenly to obtain an initial fertilizer;

[0045] Step S3. using a polymer or other material to encapsulate the fertilizer;

[0046] Step S4. Treating the fertilizer at a specific temperature so that it reacts with the absorption enhancer or synergist to form a composite structure that can enhance absorption efficiency;

[0047] Step S5. Cooling and drying the fertilizer after the high temperature reaction to ensure the stability of the fertilizer and facilitate subsequent storage;

[0048] Step S6. Then, as required, the fertilizer is made into granules or other forms to obtain the high-absorption fertilizer for application.

[0049] Embodiment 3:

[0050] The embodiment of the present invention provides a NRPC synergistic high-absorption fertilizer, which is composed of the following raw materials in parts by weight: 25 parts of phosphogypsum, 12 parts of fly ash, 18 parts of urea, 8 parts of ammonium molybdate, 12 parts of potassium sulfate, 6 parts of magnesium sulfate, 15 parts of soil conditioner, 5 parts of manganese sulfate, 4 parts of zinc sulfate, 5 parts of borax, 4 parts of ferrous sulfate, 3 parts of slow-release agent, 4 parts of absorption promoter, 3 parts of synergist and a certain amount of packaging material.

[0051] The phosphogypsum is solid waste discharged from a wet phosphoric acid device, and its water content is less than 8%. The fly ash is one of the fly ash collected from the flue gas of a coal-fired boiler after dust removal, the waste slag discharged after the flue gas is desulfurized, and the bottom ash. The slow-release agent is a complex composed of a urease inhibitor and a nitrifying bacteria inhibitor. The urease inhibitor includes benzoquinone and N-butyl-thiophosphoric acid triamide. The nitrifying bacteria inhibitor includes dicyandiamide, 2-amino-4-chloro-6-methylpyrimidine, and 3,4-dimethylphosphonic acid pyrazole. The absorption promoter includes organic matter, microorganisms, natural minerals (such as lime, silica, etc.), or special high-absorption polymers. The synergist uses plant growth regulators, inorganic or organic trace elements, which can help improve the absorption efficiency of fertilizers. The packaging material uses polymers or resins to control the release rate of fertilizers so that they can play a role in the soil for a longer time.

[0052] The preparation method of the NRPC synergistic high-absorption fertilizer comprises the following steps:

[0053] Step S1. Evenly mix phosphogypsum, fly ash, urea, ammonium molybdate, potassium sulfate, magnesium sulfate, soil conditioner, manganese sulfate, zinc sulfate, borax, ferrous sulfate and soil conditioner to obtain a mixture;

[0054] Step S2. adding a slow-release agent, an absorption enhancer and a synergist into the above mixture, stirring and mixing evenly to obtain an initial fertilizer;

[0055] Step S3. using a polymer or other material to encapsulate the fertilizer;

[0056] Step S4. Treating the fertilizer at a specific temperature so that it reacts with the absorption enhancer or synergist to form a composite structure that can enhance absorption efficiency;

[0057] Step S5. Cooling and drying the fertilizer after the high temperature reaction to ensure the stability of the fertilizer and facilitate subsequent storage;

[0058] Step S6. Then, as required, the fertilizer is made into granules or other forms to obtain the high-absorption fertilizer for application.

[0059] Experimental verification:

[0060] The NRPC synergistic high-absorption fertilizer prepared in Examples 1-3 was used for the cultivation of wheat, corn, rice and vegetables. After three consecutive years of cultivation, the harvest statistics were taken, and it was found that the NRPC synergistic high-absorption fertilizer was suitable for the application of wheat, corn, rice field crops and vegetables, and the average fertilizer utilization rate was increased by 10.5%-19.7%, the average yield of crops was increased by 6.4%-15.9%, and the average yield of vegetables was increased by 13%-32.2%.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A NRPC synergistic high absorption fertilizer, characterized in that: The invention is composed of the following raw materials in parts by weight: 20-25 parts of phosphogypsum, 10-12 parts of fly ash, 14-18 parts of urea, 6-8 parts of ammonium molybdate, 10-12 parts of potassium sulfate, 4-6 parts of magnesium sulfate, 12-15 parts of soil conditioner, 3-5 parts of manganese sulfate, 2-4 parts of zinc sulfate, 3-5 parts of borax, 2-4 parts of ferrous sulfate, 1-3 parts of sustained-release agent, 2-4 parts of absorption promoter, 1-3 parts of synergist and a certain amount of packaging material.

2. The NRPC synergistic high absorption fertilizer according to claim 1, characterized in that: The phosphogypsum is solid waste discharged from a wet-process phosphoric acid device, and its water content is less than 8%.

3. The NRPC synergistic high absorption fertilizer according to claim 1, characterized in that: The fly ash is one of the following: fly ash collected from coal-fired boiler flue gas after dust removal, waste slag discharged after flue gas desulfurization, and bottom ash, or a combination of two or more thereof.

4. The NRPC synergistic high absorption fertilizer according to claim 1, characterized in that: The sustained-release agent is a complex composed of a urease inhibitor and a nitrifying bacteria inhibitor, wherein the urease inhibitor includes at least one of phenylphosphine diamide, benzoquinone, and N-butyl-thiophosphoric triamide, and the nitrifying bacteria inhibitor includes at least one of dicyandiamide, thiourea, 2-amino-4-chloro-6-methylpyrimidine, 3,4-dimethylpyrazole, and 3,4-dimethylphosphopyrazole.

5. The NRPC synergistic high absorption fertilizer according to claim 1, characterized in that: The absorption enhancers include organic substances, microorganisms, natural minerals, or specialized high-absorption polymers.

6. The NRPC synergistic high absorption fertilizer according to claim 1, characterized in that: The synergist uses plant growth regulators, inorganic or organic trace elements, and can help improve the absorption efficiency of fertilizers.

7. The NRPC synergistic high absorption fertilizer according to claim 1, characterized in that: The packaging material adopts polymer or resin to control the release rate of the fertilizer so that the fertilizer can play a role in the soil for a longer time.

8. A method for preparing NRPC synergistic high-absorption fertilizer, characterized in that: The following steps are involved: Step S1. Evenly mix phosphogypsum, fly ash, urea, ammonium molybdate, potassium sulfate, magnesium sulfate, soil conditioner, manganese sulfate, zinc sulfate, borax, ferrous sulfate and soil conditioner to obtain a mixture; Step S2. adding a slow-release agent, an absorption enhancer and a synergist into the above mixture, stirring and mixing evenly to obtain an initial fertilizer; Step S3. using a polymer or other material to encapsulate the fertilizer; Step S4. Treating the fertilizer at a specific temperature so that it reacts with the absorption enhancer or synergist to form a composite structure that can enhance absorption efficiency; Step S5. Cooling and drying the fertilizer after the high temperature reaction to ensure the stability of the fertilizer and facilitate subsequent storage; Step S6. Then, as required, the fertilizer is made into granules or other forms to obtain the high-absorption fertilizer for application.