CN116606182B - Fertilizer and preparation method thereof - Google Patents
Fertilizer and preparation method thereof Download PDFInfo
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- CN116606182B CN116606182B CN202310885455.5A CN202310885455A CN116606182B CN 116606182 B CN116606182 B CN 116606182B CN 202310885455 A CN202310885455 A CN 202310885455A CN 116606182 B CN116606182 B CN 116606182B
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 170
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 83
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims abstract description 75
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 73
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 73
- 239000011574 phosphorus Substances 0.000 claims abstract description 73
- 229920001444 polymaleic acid Polymers 0.000 claims abstract description 58
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims abstract description 44
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 claims abstract description 43
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 21
- MKGIQRNAGSSHRV-UHFFFAOYSA-N 1,1-dimethyl-4-phenylpiperazin-1-ium Chemical compound C1C[N+](C)(C)CCN1C1=CC=CC=C1 MKGIQRNAGSSHRV-UHFFFAOYSA-N 0.000 claims abstract 5
- 239000012747 synergistic agent Substances 0.000 claims description 51
- 239000002994 raw material Substances 0.000 claims description 40
- 239000007787 solid Substances 0.000 claims description 32
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 11
- 239000011591 potassium Substances 0.000 claims description 11
- 229910052700 potassium Inorganic materials 0.000 claims description 11
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 10
- 239000001103 potassium chloride Substances 0.000 claims description 6
- 235000011164 potassium chloride Nutrition 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 4
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 4
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 4
- 239000006012 monoammonium phosphate Substances 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 4
- OQZCJRJRGMMSGK-UHFFFAOYSA-M potassium metaphosphate Chemical compound [K+].[O-]P(=O)=O OQZCJRJRGMMSGK-UHFFFAOYSA-M 0.000 claims description 3
- 235000019828 potassium polyphosphate Nutrition 0.000 claims description 3
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 2
- 239000005696 Diammonium phosphate Substances 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 2
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 2
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 2
- 239000002956 ash Substances 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 2
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 2
- 229910000396 dipotassium phosphate Inorganic materials 0.000 claims description 2
- 235000019797 dipotassium phosphate Nutrition 0.000 claims description 2
- SWHAQEYMVUEVNF-UHFFFAOYSA-N magnesium potassium Chemical compound [Mg].[K] SWHAQEYMVUEVNF-UHFFFAOYSA-N 0.000 claims description 2
- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 claims description 2
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 2
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims description 2
- 235000010333 potassium nitrate Nutrition 0.000 claims description 2
- 239000004323 potassium nitrate Substances 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 43
- 238000003860 storage Methods 0.000 abstract description 15
- 239000000618 nitrogen fertilizer Substances 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- LXKCHCXZBPLTAE-UHFFFAOYSA-N 3,4-dimethyl-1H-pyrazole phosphate Chemical compound OP(O)(O)=O.CC1=CNN=C1C LXKCHCXZBPLTAE-UHFFFAOYSA-N 0.000 description 115
- 150000001875 compounds Chemical class 0.000 description 47
- 238000005259 measurement Methods 0.000 description 22
- 238000002156 mixing Methods 0.000 description 21
- 238000011282 treatment Methods 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 230000000694 effects Effects 0.000 description 19
- 238000009472 formulation Methods 0.000 description 17
- 239000007788 liquid Substances 0.000 description 17
- 230000014759 maintenance of location Effects 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 12
- 241000196324 Embryophyta Species 0.000 description 8
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 7
- 230000008979 phosphorus utilization Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000440 bentonite Substances 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 239000002686 phosphate fertilizer Substances 0.000 description 3
- 235000017060 Arachis glabrata Nutrition 0.000 description 2
- 244000105624 Arachis hypogaea Species 0.000 description 2
- 235000010777 Arachis hypogaea Nutrition 0.000 description 2
- 235000018262 Arachis monticola Nutrition 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000020232 peanut Nutrition 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000020774 essential nutrients Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000014075 nitrogen utilization Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 229920000141 poly(maleic anhydride) Polymers 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- 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
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
-
- 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
Abstract
The invention relates to the technical field of agricultural preparations, in particular to a fertilizer and a preparation method thereof. The fertilizer provided by the invention comprises a nitrogen-phosphorus synergist, wherein the nitrogen-phosphorus synergist comprises DMPP and one or two selected from polymaleic acid and maleic acid-acrylic acid copolymer. In the nitrogen and phosphorus containing synergist of the fertilizer provided by the invention, the polymaleic acid, the maleic acid-acrylic acid copolymer or the mixture thereof is matched with the DMPP, so that the stability of the DMPP in the fertilizer is obviously improved, the content stability and the effectiveness can be kept in a long-time storage process, the nitrogen fertilizer utilization rate can be effectively improved, the possibility that phosphorus is fixed by soil can be reduced, and the phosphorus fertilizer utilization rate can be improved.
Description
Technical Field
The invention relates to the technical field of agricultural preparations, in particular to a fertilizer and a preparation method thereof.
Background
Nitrogen and phosphorus are essential nutrient elements for plant growth, and many important organic compounds in the plant contain nitrogen and phosphorus, and the nitrogen and the phosphorus participate in various important physiological processes in the plant.
Nitrification inhibitors are chemical substances capable of inhibiting the biological conversion process of ammonium nitrogen into nitrate nitrogen, and by reducing the generation and accumulation of nitrate nitrogen in soil, the loss of nitrogen fertilizer in the form of nitrate nitrogen and the influence on ecological environment are reduced. DMPP (3, 4-dimethylpyrazole phosphate) is one of the most commonly used nitrification inhibitors at present, has obvious effect on improving the utilization rate of nitrogen fertilizer, and can promote the growth of various crops such as wheat, corn, rice, peanut, soybean and the like. However, due to the molecular structure and chemical nature of DMPP, the content of DMPP in a fertilizer can be obviously reduced after long-term storage, so that the effect of inhibiting the conversion of ammonium nitrogen into nitrate nitrogen is reduced.
In addition, during the use process of the phosphate fertilizer, the phenomena of chemical precipitation, soil adsorption, storage closing, biological fixation and the like of phosphorus in the soil can occur, so that the plant can not effectively absorb phosphorus elements, and the utilization rate of the phosphate fertilizer is reduced.
Disclosure of Invention
The invention provides a fertilizer and a preparation method thereof.
In the research and development process, the invention discovers that the polymaleic acid, the maleic acid-acrylic acid copolymer or the mixture thereof can obviously improve the stability of the DMPP in the fertilizer, effectively reduce the content reduction of the DMPP in the storage process of the fertilizer and improve the effectiveness of the DMPP in the fertilizer.
Based on the findings, the invention provides the following technical scheme:
in a first aspect, the present invention provides a fertilizer comprising a nitrogen-phosphorus synergist;
the nitrogen-phosphorus synergist comprises DMPP and one or two selected from polymaleic acid and maleic acid-acrylic acid copolymer.
In the nitrogen-phosphorus synergistic agent, the polymaleic acid, the maleic acid-acrylic acid copolymer or the mixture thereof and the DMPP are matched to play a role in remarkably improving the stability of the DMPP in the fertilizer, keeping the content stable and effective in the long-time storage process and improving the utilization rate of the nitrogen fertilizer; in addition, the polymaleic acid, the maleic acid-acrylic acid copolymer or the mixture thereof can also reduce the possibility of phosphorus fixation by soil and improve the utilization rate of the phosphate fertilizer.
In the present invention, polymaleic acid is also called hydrolyzed polymaleic anhydride, polymaleic acid and maleic acid-acrylic acid copolymer are all low molecular weight polyelectrolytes, and the molecular weight of polymaleic acid, polymaleic acid and maleic acid-acrylic acid copolymer is not particularly limited, and any commercially available polymaleic acid, polymaleic acid and maleic acid-acrylic acid copolymer meeting general quality requirements can be adopted.
Preferably, in the nitrogen-phosphorus synergist, the mass ratio of DMPP to polymaleic acid and/or maleic acid-acrylic acid copolymer is 1: (4-25). Within the above mass ratio range, polymaleic acid, maleic acid-acrylic acid copolymer or a mixture thereof can exert a better function of stabilizing DMPP.
In the nitrogen-phosphorus synergist, the mass ratio of DMPP to polymaleic acid and/or maleic acid-acrylic acid copolymer is 1: (5-20).
The nitrogen-phosphorus synergist can contain DMPP and one or two selected from polymaleic acid and maleic acid-acrylic acid copolymer, and can also contain other synergist components capable of improving the utilization rate of nitrogen and phosphorus.
In the fertilizer, the mass percentage of the nitrogen-phosphorus synergistic agent is 0.15-1.5%, preferably 0.3-1%.
Instability of DMPP in fertilizers is a common problem for various types of fertilizers containing DMPP, of various compositions. Proved by verification, the nitrogen-phosphorus synergist provided by the invention can be applied to various different fertilizers (solid fertilizers and liquid fertilizers), and has wide applicability. Thus, the fertilizer described above may be a solid fertilizer or a liquid fertilizer, including but not limited to compound fertilizers, solid water-soluble fertilizers, liquid fertilizers, and the like. The composition of the fertilizer is not particularly limited, and may include any one or more selected from nitrogen raw materials, phosphorus raw materials, potassium raw materials, macroelements, secondary elements and microelements.
In some embodiments of the invention, the fertilizer described above further comprises one or more selected from the group consisting of a phosphorus feedstock, a nitrogen feedstock, and a potassium feedstock.
Wherein the phosphorus raw material is one or more selected from monoammonium phosphate, diammonium phosphate, monopotassium phosphate, dipotassium phosphate, ammonium polyphosphate and potassium polyphosphate.
The nitrogen raw material is one or more selected from urea, ammonium chloride and ammonium sulfate.
The potassium raw material is one or more selected from potassium chloride, potassium sulfate, plant ash, sylvite, potassium magnesium salt, carnallite and potassium nitrate.
In some embodiments of the invention, the fertilizer is a solid fertilizer, preferably a compound fertilizer or a solid water-soluble fertilizer, comprising one or more selected from the group consisting of nitrogen feedstock, phosphorus feedstock, and potassium feedstock.
In some embodiments of the invention, the fertilizer is a liquid fertilizer comprising one or more selected from the group consisting of a nitrogen feedstock, a phosphorus feedstock, and a potassium feedstock.
The fertilizer can also be added with auxiliary materials allowed in the fertilizer field, wherein the auxiliary materials comprise, but are not limited to carriers and the like. Different auxiliary materials can be added into the fertilizer based on the preparation type of the fertilizer.
In some embodiments of the invention, the fertilizer further comprises bentonite.
In some embodiments of the invention, the fertilizer comprises the following components in parts by weight: 0.02-0.08 part of nitrogen-phosphorus synergist, 1-5 parts of nitrogen raw material, 1-5 parts of phosphorus raw material and 1-5 parts of potassium raw material.
In some embodiments of the invention, the fertilizer comprises the following components in parts by weight: 0.02-0.08 part of nitrogen-phosphorus synergist, 1-5 parts of nitrogen raw material, 1-5 parts of phosphorus raw material, 1-5 parts of potassium raw material and 1-3 parts of bentonite.
In a second aspect, the present invention provides a method of preparing a fertilizer as described above, the method comprising the step of mixing a nitrogen-phosphorus synergist with a raw material other than the nitrogen-phosphorus synergist.
In some embodiments of the invention, the fertilizer is a solid fertilizer; the preparation method comprises the following steps: the nitrogen and phosphorus synergistic agent is firstly mixed with the phosphorus raw material to obtain a mixture, and then the mixture is mixed with the rest raw materials of the fertilizer.
The invention optimizes and discovers the adding mode of the nitrogen-phosphorus synergistic agent in the fertilizer, and for solid fertilizer, the nitrogen-phosphorus synergistic agent is firstly mixed with the phosphorus raw material and then mixed with other raw materials (except the nitrogen-phosphorus synergistic agent and the phosphorus raw material), so that the stability of DMPP in the fertilizer can be further improved, the content loss of DMPP in the storage process of the fertilizer is reduced, the retention rate of the DMPP is improved, and meanwhile, the nitrogen-phosphorus synergistic agent can be further promoted to play the roles of reducing the fixation of phosphorus and improving the content of effective phosphorus. In addition, the adding mode does not need to additionally increase equipment and does not influence the production process of the original fertilizer.
The above-described mixing method is blending or spraying.
The preparation method of the nitrogen-phosphorus synergist comprises the following steps: DMPP is mixed with one or two selected from polymaleic acid, maleic acid-acrylic acid copolymers.
The solid fertilizer can be any kind of solid fertilizer, including solid compound fertilizer, solid water-soluble fertilizer, etc.
In a third aspect, the present invention provides the use of a nitrogen phosphorus synergist comprising DMPP and one or both selected from polymaleic acid, maleic acid-acrylic acid copolymers in the preparation of a fertilizer; the fertilizer is a solid fertilizer.
Applications described above include: the nitrogen and phosphorus synergistic agent is firstly mixed with the phosphorus raw material to obtain a mixture, and then the mixture is mixed with the rest raw materials of the fertilizer.
The rest raw materials refer to other raw materials except nitrogen and phosphorus synergists and phosphorus raw materials in the fertilizer.
According to the invention, as for the solid fertilizer, the nitrogen-phosphorus synergist is mixed with the phosphorus raw material first and then mixed with other raw materials (except the nitrogen-phosphorus synergist and the phosphorus raw material), so that the stability of DMPP in the fertilizer can be further improved, the content loss of DMPP in the storage process of the fertilizer is reduced, and meanwhile, the nitrogen-phosphorus synergist can be further promoted to play the roles of reducing the fixation of phosphorus and improving the content of effective phosphorus. In addition, the adding mode does not need to additionally increase equipment and does not influence the production process of the original fertilizer.
In the application, the mass ratio of DMPP to polymaleic acid and/or maleic acid-acrylic acid copolymer in the nitrogen-phosphorus synergist is 1: (4-25).
Further preferably, in the nitrogen-phosphorus synergist, the mass ratio of the DMPP to the polymaleic acid and/or maleic acid-acrylic acid copolymer is 1: (5-20).
In a fourth aspect, the present invention provides the use of polymaleic acid and/or maleic acid-acrylic acid copolymers to improve the stability of DMPP in fertilisers.
In a fifth aspect, the present invention provides the use of polymaleic acid and/or maleic acid-acrylic acid copolymers to reduce the loss of DMPP content during storage of fertilizers.
In a sixth aspect, the present invention provides the use of polymaleic acid and/or maleic acid-acrylic acid copolymers to enhance the effectiveness of DMPP in a DMPP-containing fertiliser.
In the above applications, DMPP is mixed with polymaleic acid and/or maleic acid-acrylic acid copolymers.
Preferably, DMPP and polymaleic acid and/or maleic acid-acrylic acid copolymer are mixed according to a mass ratio of 1: (4-25) mixing.
Further preferably, the DMPP is mixed with polymaleic acid and/or maleic acid-acrylic acid copolymer according to a mass ratio of 1: (5-20) mixing.
In the application of the fourth aspect, the stability refers to the property that DMPP exists stably during storage of the fertilizer, and can be specifically expressed as content retention rate during storage and the like.
Instability of DMPP in fertilizers is a common problem for various types of fertilizers containing DMPP, of various compositions. In the above applications, the fertilizer may be any form of fertilizer, including solid and liquid fertilizers, such as compound fertilizers, solid water-soluble fertilizers, liquid fertilizers, and the like. The composition of the fertilizer is not particularly limited, and may include any one or more selected from nitrogen raw materials, phosphorus raw materials, potassium raw materials, macroelements, secondary elements and microelements. Experiments prove that the stabilizing effect of polymaleic acid and/or maleic acid-acrylic acid copolymer on DMPP can be exerted in solid or liquid fertilizer, and the polymaleic acid and/or maleic acid-acrylic acid copolymer has better effect.
In the present invention, the storage may be a conventional storage condition of the fertilizer, such as normal temperature storage.
In a seventh aspect, the present invention provides a nitrogen phosphorus synergist composition comprising DMPP and one or two selected from the group consisting of polymaleic acid, maleic acid-acrylic acid copolymers.
Preferably, in the above-mentioned nitrogen-phosphorus synergist composition, the mass ratio of DMPP to polymaleic acid and/or maleic acid-acrylic acid copolymer is 1: (4-25).
Further preferably, the composition has a mass ratio of DMPP to polymaleic acid and/or maleic acid-acrylic acid copolymer of 1: (5-20).
The nitrogen-phosphorus synergistic agent composition can contain other synergistic agent components capable of improving the utilization rate of nitrogen and phosphorus besides DMPP and one or two selected from polymaleic acid and maleic acid-acrylic acid copolymers, or can be prepared into various agricultural preparation formulations by adding auxiliary materials allowed in the fertilizer field.
In an eighth aspect, the present invention provides the use of a nitrogen-phosphorus booster composition as described above in the preparation of a fertilizer.
In the above applications, the fertilizer may be a solid fertilizer or a liquid fertilizer, including but not limited to compound fertilizers, solid water-soluble fertilizers, liquid fertilizers, and the like. The nitrogen-phosphorus synergistic agent composition disclosed by the invention can be suitable for various different fertilizers, and is wide in applicability.
In a ninth aspect, the present invention provides the use of a nitrogen and phosphorus booster composition as described above to increase the nitrogen and/or phosphorus availability in soil or fertiliser.
In such applications, increasing nitrogen utilization may be manifested as inhibiting the conversion of ammonium nitrogen to nitrate nitrogen, reducing the loss of nitrogen fertilizer in the form of nitrate nitrogen. Increasing phosphorus utilization may be manifested as a reduction in phosphorus fixation and an increase in available phosphorus content.
In a tenth aspect, the present invention provides the use of a nitrogen-phosphorus booster composition as described above in plant cultivation.
DMPP has been shown to be useful in plants such as wheat, corn, rice, peanut, soybean, etc., improving nitrogen fertilizer utilization and promoting plant growth. Because the growth and development of different plants all need nitrogen nutrition, the DMPP has the function of improving the utilization rate of nitrogen fertilizer, and the nitrogen-phosphorus synergistic agent composition is also suitable for planting various plants.
The beneficial effects of the invention at least comprise: the invention discovers the new application of polymaleic acid, maleic acid-acrylic acid copolymer or the mixture thereof in improving the stability of DMPP in the fertilizer, the polymaleic acid, maleic acid-acrylic acid copolymer or the mixture thereof can obviously improve the stability of DMPP in the fertilizer, effectively reduce the content loss of DMPP in the storage process of the fertilizer, improve the effectiveness of DMPP in the fertilizer, enable the DMPP to be more stable and more effectively play the role of inhibiting the conversion of ammonium nitrogen into nitrate nitrogen, enable the nitrogen fertilizer to be longer-acting in soil and improve the utilization rate of the nitrogen fertilizer.
In the nitrogen and phosphorus containing synergist of the fertilizer provided by the invention, the polymaleic acid, the maleic acid-acrylic acid copolymer or the mixture thereof and the DMPP are matched to obviously improve the stability of the DMPP in the fertilizer, so that the content stability and the effectiveness can be kept in a long-time storage process, the nitrogen fertilizer utilization rate is effectively improved, the possibility that phosphorus is fixed by soil is reduced, and the phosphorus fertilizer utilization rate is improved.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The various chemicals used in the examples below are commercially available conventional chemicals. Wherein the purity of the DMPP is more than or equal to 98%, the solid content of the polymaleic acid is 50%, and the solid content of the maleic acid-acrylic acid copolymer is 48%.
In the following examples, the compound fertilizers (17-17-17), solid water-soluble fertilizers (20-20-20) and liquid fertilizers (170-110-120) used in the examples are all the same standard unless specified otherwise; wherein, the solid water-soluble fertilizer (20-20-20) comprises the following raw materials: 3.49kg of urea (46-0-0), 3.28kg of monoammonium phosphate (12-61-0), and 3.23kg of potassium chloride (0-0-62); the compound fertilizer (17-17-17) comprises the following raw materials in proportion: urea (46-0-0) 2.97kg, monoammonium phosphate (12-61-0) 2.79kg, potassium chloride (0-0-62) 2.75kg, bentonite 1.49kg; the liquid fertilizer (170-110-120) comprises the following raw materials: 6.36kg of water, 2.40kg of potassium polyphosphate (0-46-50) and 3.70kg of urea (46-0-0).
The soil used in the following examples was from field test plots (pH 6.67, alkaline hydrolysis nitrogen 81.6mg/kg, available phosphorus 38.1mg/kg, and quick-acting potassium 107.5 mg/kg) of the developing center Limited of agriculture (Linyi) in Linyi, shandong province. The method for measuring DMPP in the fertilizer is carried out according to the NY/T3423-2019 standard, and the method for measuring available phosphorus in soil is carried out according to the NY/T1121.7-2014 standard.
Example 1
The embodiment provides a nitrogen-phosphorus synergistic agent composition, which comprises the following components in percentage by mass: DMPP and polymaleic acid of 10.
The embodiment also provides a compound fertilizer which comprises the nitrogen-phosphorus synergistic agent composition and the compound fertilizer (17-17-17); in the compound fertilizer, the mass ratio of the nitrogen-phosphorus synergistic agent composition to the compound fertilizer (17-17-17) is 0.033:10.
the effect of polymaleic acid in the nitrogen-phosphorus synergistic agent composition on the stability of DMPP is detected, and the improvement effect of the composition on the phosphorus utilization rate is detected, wherein the method comprises the following steps:
formula 1: uniformly mixing 3g of DMPP with 30g of water, and uniformly blending into 10kg of compound fertilizer (17-17-17);
formula 2: 3g of DMPP and 30g of polymaleic acid are evenly mixed and evenly mixed into 10kg of compound fertilizer (17-17-17).
The DMPP content was measured every 30 days by storing the formulations 1 and 2 at normal temperature, and the measurement results are shown in Table 1.
Table 1 DMPP content (%) and DMPP retention at the end of the experiment (%)
The above formulations 1 and 2 weighed 0.5g, diluted to 500mL with water, poured into 1.5kg of soil uniformly, and stood for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 2.
TABLE 2 effective phosphorus content in soil after 72h of different treatments
Example 2
The embodiment provides a nitrogen-phosphorus synergistic agent composition, which comprises the following components in percentage by mass: 20 DMPP and polymaleic acid.
The embodiment also provides a compound fertilizer which comprises the nitrogen-phosphorus synergistic agent composition and the compound fertilizer (17-17-17); in the compound fertilizer, the mass ratio of the nitrogen-phosphorus synergistic agent composition to the compound fertilizer (17-17-17) is 0.063:10.
the effect of polymaleic acid in the nitrogen-phosphorus synergistic agent composition on the stability of DMPP is detected, and the improvement effect of the composition on the phosphorus utilization rate is detected, wherein the method comprises the following steps:
formula 1: uniformly mixing 3g of DMPP with 60g of water, and uniformly blending into 10kg of compound fertilizer (17-17-17);
formula 2: 3g of DMPP and 60g of polymaleic acid are evenly mixed and evenly mixed into 10kg of compound fertilizer (17-17-17).
The DMPP content was measured every 30 days by storing the formulations 1 and 2 at normal temperature, and the measurement results are shown in Table 3.
TABLE 3 DMPP content (%) and DMPP retention at the end of the experiment for different treatment periods (%)
The above formulations 1 and 2 weighed 0.5g, diluted to 500mL with water, poured into 1.5kg of soil uniformly, and stood for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 4.
TABLE 4 effective phosphorus content in soil after 72h of different treatments
Example 3
The embodiment provides a nitrogen-phosphorus synergistic agent composition, which comprises the following components in percentage by mass: 5 DMPP and polymaleic acid.
The embodiment also provides a compound fertilizer which comprises the nitrogen-phosphorus synergistic agent composition and the compound fertilizer (17-17-17); in the compound fertilizer, the mass ratio of the nitrogen-phosphorus synergistic agent composition to the compound fertilizer (17-17-17) is 0.018:10.
the effect of polymaleic acid in the nitrogen-phosphorus synergistic agent composition on the stability of DMPP is detected, and the improvement effect of the composition on the phosphorus utilization rate is detected, wherein the method comprises the following steps:
formula 1: uniformly mixing 3g of DMPP with 15g of water, and uniformly blending into 10kg of compound fertilizer (17-17-17);
formula 2: 3g of DMPP and 15g of polymaleic acid are evenly mixed and evenly mixed into 10kg of compound fertilizer (17-17-17).
The DMPP content was measured every 30 days by storing the formulations 1 and 2 at normal temperature, and the measurement results are shown in Table 5.
TABLE 5 DMPP content (%) and DMPP retention at the end of the experiment for different treatment periods (%)
The above formulations 1 and 2 weighed 0.5g, diluted to 500mL with water, poured into 1.5kg of soil uniformly, and stood for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 6.
TABLE 6 effective phosphorus content in soil after 72h of different treatments
Example 4
The embodiment provides a nitrogen-phosphorus synergistic agent composition, which comprises the following components in percentage by mass: 15 DMPP and polymaleic acid.
The embodiment also provides a solid water-soluble fertilizer which comprises the nitrogen-phosphorus synergistic agent composition and the solid water-soluble fertilizer (20-20-20); in the solid water-soluble fertilizer, the mass ratio of the nitrogen-phosphorus synergistic agent composition to the solid water-soluble fertilizer (20-20-20) is 0.048:10.
the effect of polymaleic acid in the nitrogen-phosphorus synergistic agent composition on the stability of DMPP is detected, and the improvement effect of the composition on the phosphorus utilization rate is detected, wherein the method comprises the following steps:
formula 1: uniformly mixing 3g of DMPP with 45g of water, and uniformly blending into 10kg of solid water-soluble fertilizer (20-20-20);
formula 2: 3g of DMPP and 45g of polymaleic acid are evenly mixed and evenly mixed into 10kg of solid water-soluble fertilizer (20-20-20).
The DMPP content was measured every 30 days by storing the formulations 1 and 2 at normal temperature, and the measurement results are shown in Table 7.
TABLE 7 DMPP content (%) and DMPP retention at the end of the experiment for different treatment periods (%)
The above formulations 1 and 2 weighed 0.5g, diluted with water to 500mL, poured into 1.5kg of soil uniformly, and stood for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 8.
TABLE 8 effective phosphorus content in soil after 72h of different treatments
Example 5
This example provides a liquid fertilizer comprising the nitrogen-phosphorus booster composition of example 1 and a liquid fertilizer (170-110-120); in the liquid fertilizer, the mass ratio of the nitrogen-phosphorus synergistic agent composition to the liquid fertilizer (170-110-120) is 0.033:10.
the effect of polymaleic acid on DMPP stability in the nitrogen-phosphorus synergist composition of example 1 was tested and the improvement effect of the composition on phosphorus utilization was specifically as follows:
formula 1: uniformly mixing 3g of DMPP with 30g of water, and uniformly blending into 10kg of liquid fertilizer (170-110-120);
formula 2: 3g of DMPP and 30g of polymaleic acid are evenly mixed and evenly mixed into 10kg of liquid fertilizer (170-110-120).
The DMPP content was measured every 30 days by storing the formulations 1 and 2 at normal temperature, and the measurement results are shown in Table 9.
TABLE 9 DMPP content (%) and DMPP retention at the end of the experiment for different treatment periods (%)
The above formulations 1 and 2 weighed 0.5g, diluted to 500mL with water, poured into 1.5kg of soil uniformly, and stood for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 10.
TABLE 10 effective phosphorus content in soil after 72h of different treatments
Example 6
The embodiment provides a nitrogen-phosphorus synergistic agent composition, which comprises the following components in percentage by mass: 10 and maleic acid-acrylic acid copolymer.
The embodiment provides a compound fertilizer which comprises the nitrogen-phosphorus synergistic agent composition and a compound fertilizer (17-17-17); in the compound fertilizer, the mass ratio of the nitrogen-phosphorus synergistic agent composition to the compound fertilizer (17-17-17) is 0.033:10.
the effect of the maleic acid-acrylic acid copolymer in the nitrogen-phosphorus synergistic agent composition on the stability of DMPP is detected, and the effect of the composition on improving the utilization rate of phosphorus is detected as follows:
formula 1: uniformly mixing 3g of DMPP with 30g of water, and uniformly blending into 10kg of compound fertilizer (17-17-17);
formula 2: DMPP 3g was uniformly mixed with 30g of a maleic acid-acrylic acid copolymer, and uniformly mixed into 10kg of a compound fertilizer (17-17-17).
The DMPP content was measured every 30 days by storing the formulations 1 and 2 at normal temperature, and the measurement results are shown in Table 11.
Table 11 DMPP content (%) and DMPP retention at the end of the experiment (%)
The above formulations 1 and 2 weighed 0.5g, diluted with water to 500mL, poured into 1.5kg of soil uniformly, and stood for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 12.
TABLE 12 effective phosphorus content in soil after 72h of different treatments
Example 7
The embodiment provides a nitrogen-phosphorus synergistic agent composition, which comprises the following components in percentage by mass: 10 with polymaleic acid and maleic acid-acrylic acid copolymer.
The embodiment provides a compound fertilizer, which comprises the nitrogen-phosphorus synergistic agent composition and a compound fertilizer (17-17-17), wherein the mass ratio of the nitrogen-phosphorus synergistic agent composition to the compound fertilizer (17-17-17) is 0.033:10.
the effect of polymaleic acid and maleic acid-acrylic acid copolymer in the nitrogen-phosphorus synergistic agent composition on DMPP stability is detected, and the improvement effect of the composition on the phosphorus utilization rate is specifically as follows:
formula 1: uniformly mixing 3g of DMPP with 30g of water, and uniformly blending into 10kg of compound fertilizer (17-17-17);
formula 2: 3g of DMPP, 20g of polymaleic acid and 10g of maleic acid-acrylic acid copolymer are uniformly mixed and uniformly mixed into 10kg of compound fertilizer (17-17-17).
The DMPP content was measured every 30 days by storing the formulations 1 and 2 at normal temperature, and the measurement results are shown in Table 13.
TABLE 13 DMPP content (%) and DMPP retention at the end of the experiment for different treatment periods (%)
The above formulations 1 and 2 weighed 0.5g, diluted with water to 500mL, poured into 1.5kg of soil uniformly, and stood for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 14.
TABLE 14 effective phosphorus content in soil after 72h of different treatments
Example 8
The embodiment provides a nitrogen-phosphorus synergistic agent composition, which comprises the following components in percentage by mass: 20 and maleic-acrylic acid copolymer.
The embodiment provides a compound fertilizer, which comprises the nitrogen-phosphorus synergistic agent composition and a compound fertilizer (17-17-17), wherein the mass ratio of the nitrogen-phosphorus synergistic agent composition to the compound fertilizer (17-17-17) is 0.063:10.
the effect of the maleic acid-acrylic acid copolymer in the nitrogen-phosphorus synergistic agent composition on the stability of DMPP is detected, and the effect of the composition on improving the utilization rate of phosphorus is detected as follows:
formula 1: uniformly mixing 3g of DMPP with 60g of water, and uniformly blending into 10kg of compound fertilizer (17-17-17);
formula 2: DMPP 3g was uniformly mixed with 60g of a maleic acid-acrylic acid copolymer, and uniformly mixed into 10kg of a compound fertilizer (17-17-17).
The DMPP content was measured every 30 days by storing the formulations 1 and 2 at normal temperature, and the measurement results are shown in Table 15.
TABLE 15 DMPP content (%) and DMPP retention at the end of the experiment for different treatment periods (%)
The above formulations 1 and 2 weighed 0.5g, diluted with water to 500mL, poured into 1.5kg of soil uniformly, and stood for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 16.
TABLE 16 effective phosphorus content in soil after 72h of different treatments
Example 9
The embodiment verifies the influence of different adding modes of the nitrogen-phosphorus synergistic agent in the fertilizer on the efficacy of the fertilizer, and the concrete steps are as follows:
DMPP 3g and polymaleic acid 30g are evenly mixed to obtain a nitrogen-phosphorus synergistic agent, and the nitrogen-phosphorus synergistic agent is added into 10kg of solid water-soluble fertilizer (20-20-20) through different addition sequences, wherein the specific addition sequences are shown in Table 17.
TABLE 17 order of addition of nitrogen and phosphorus synergists
The solid water-soluble fertilizer prepared above was stored at normal temperature, and the DMPP content was measured every 30 days, and the measurement results are shown in table 18.
Table 18 DMPP content (%) and DMPP retention at the end of the experiment (%)
The solid water-soluble fertilizer prepared by the above treatments 1 to 7 was weighed 0.5g respectively, diluted to 500mL with water, poured into 1.5kg of soil uniformly, left to stand for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 19.
TABLE 19 effective phosphorus content in soil after 72h of different treatments
Example 10
The embodiment verifies the influence of different adding modes of the nitrogen-phosphorus synergistic agent in the fertilizer on the efficacy of the fertilizer, and the concrete steps are as follows:
DMPP 3g and polymaleic acid 30g are evenly mixed to obtain a nitrogen-phosphorus synergistic agent, and the nitrogen-phosphorus synergistic agent is added into 10kg of compound fertilizer (17-17-17) through different addition sequences, wherein the specific addition sequences are shown in table 20.
TABLE 20 order of adding nitrogen and phosphorus synergists
The compound fertilizer prepared above was stored at normal temperature, and the DMPP content was measured every 30 days, and the measurement results are shown in table 21.
Table 21 DMPP content (%) and DMPP retention at the end of the experiment (%)
The compound fertilizer prepared by the above treatments 1-7 was weighed 0.5g, diluted with water to 500mL, poured into 1.5kg of soil uniformly, left to stand for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 22.
TABLE 22 effective phosphorus content in soil after 72h of different treatments
Example 11
The embodiment verifies the influence of different adding modes of the nitrogen-phosphorus synergistic agent in the fertilizer on the efficacy of the fertilizer, and the concrete steps are as follows:
DMPP 3g and polymaleic acid 30g are evenly mixed to obtain a nitrogen-phosphorus synergistic agent, and the nitrogen-phosphorus synergistic agent is added into 10kg of compound fertilizer (17-17-17) through different addition sequences, wherein the specific addition sequences are shown in table 23.
TABLE 23 order of addition of nitrogen and phosphorus synergists
The compound fertilizer prepared above was stored at normal temperature, and the DMPP content was measured every 30 days, and the measurement results are shown in table 24.
Table 24 DMPP content (%) and DMPP retention at the end of the experiment (%)
The compound fertilizer prepared by the above treatments 1-7 was weighed 0.5g, diluted with water to 500mL, poured into 1.5kg of soil uniformly, left to stand for 72 hours, and the content of available phosphorus in the soil was measured, and the measurement results are shown in Table 25.
Table 25 content of available phosphorus in soil after 72h of different treatments
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (2)
1. A method for preparing a fertilizer, characterized in that the fertilizer comprises a nitrogen-phosphorus synergist;
the nitrogen-phosphorus synergist comprises DMPP and one or two selected from polymaleic acid and maleic acid-acrylic acid copolymer;
in the nitrogen-phosphorus synergist, the mass ratio of DMPP to polymaleic acid and/or maleic acid-acrylic acid copolymer is 1: (5-20);
the fertilizer also comprises a phosphorus raw material, a nitrogen raw material and a potassium raw material;
the fertilizer is a solid fertilizer;
the preparation method of the fertilizer comprises the following steps: the nitrogen and phosphorus synergistic agent is firstly mixed with the phosphorus raw material to obtain a mixture, and then the mixture is mixed with the rest raw materials of the fertilizer.
2. The method according to claim 1, wherein the phosphorus raw material is one or more selected from monoammonium phosphate, diammonium phosphate, monopotassium phosphate, dipotassium phosphate, ammonium polyphosphate, potassium polyphosphate;
and/or the nitrogen raw material is one or more selected from urea, ammonium chloride and ammonium sulfate;
and/or the potassium raw material is one or more selected from potassium chloride, potassium sulfate, plant ash, sylvite, potassium magnesium salt, carnallite and potassium nitrate.
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