CN108083897A - A kind of control nitrogen promotees phosphorous synergia compound fertilizer material and preparation method and application - Google Patents
A kind of control nitrogen promotees phosphorous synergia compound fertilizer material and preparation method and application Download PDFInfo
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- CN108083897A CN108083897A CN201711340072.0A CN201711340072A CN108083897A CN 108083897 A CN108083897 A CN 108083897A CN 201711340072 A CN201711340072 A CN 201711340072A CN 108083897 A CN108083897 A CN 108083897A
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- Prior art keywords
- modified
- acid
- compound fertilizer
- phosphorous
- urea
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 239000003337 fertilizer Substances 0.000 title claims abstract description 129
- 150000001875 compounds Chemical class 0.000 title claims abstract description 70
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 69
- 239000000463 material Substances 0.000 title claims abstract description 44
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000004202 carbamide Substances 0.000 claims abstract description 48
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 30
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 26
- 239000000017 hydrogel Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 15
- 239000011573 trace mineral Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000001103 potassium chloride Substances 0.000 claims abstract description 13
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- -1 double superhosphate Chemical compound 0.000 claims abstract description 6
- 238000005469 granulation Methods 0.000 claims abstract description 6
- 230000003179 granulation Effects 0.000 claims abstract description 6
- 239000012467 final product Substances 0.000 claims abstract description 3
- 239000007921 spray Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000000047 product Substances 0.000 claims description 13
- 241000209140 Triticum Species 0.000 claims description 12
- 235000021307 Triticum Nutrition 0.000 claims description 12
- 240000008042 Zea mays Species 0.000 claims description 12
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 12
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 12
- 235000012216 bentonite Nutrition 0.000 claims description 12
- 235000005822 corn Nutrition 0.000 claims description 12
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 11
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 11
- 239000011609 ammonium molybdate Substances 0.000 claims description 11
- 229940010552 ammonium molybdate Drugs 0.000 claims description 11
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 10
- 239000004327 boric acid Substances 0.000 claims description 10
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 10
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 10
- 235000009529 zinc sulphate Nutrition 0.000 claims description 10
- 239000011686 zinc sulphate Substances 0.000 claims description 10
- 235000010338 boric acid Nutrition 0.000 claims description 8
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- 239000004021 humic acid Substances 0.000 claims description 7
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 238000005119 centrifugation Methods 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- 150000007522 mineralic acids Chemical class 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- 150000007524 organic acids Chemical group 0.000 claims description 5
- 235000005985 organic acids Nutrition 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 229920002125 Sokalan® Polymers 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- WLAMNBDJUVNPJU-UHFFFAOYSA-N 2-methylbutyric acid Chemical compound CCC(C)C(O)=O WLAMNBDJUVNPJU-UHFFFAOYSA-N 0.000 claims description 2
- LJGHYPLBDBRCRZ-UHFFFAOYSA-N 3-(3-aminophenyl)sulfonylaniline Chemical compound NC1=CC=CC(S(=O)(=O)C=2C=C(N)C=CC=2)=C1 LJGHYPLBDBRCRZ-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 244000037666 field crops Species 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- BFSPAPKTIGPYOV-BQYQJAHWSA-N (e)-1-[4-(4-hydroxyphenyl)piperazin-1-yl]-3-thiophen-2-ylprop-2-en-1-one Chemical compound C1=CC(O)=CC=C1N1CCN(C(=O)\C=C\C=2SC=CC=2)CC1 BFSPAPKTIGPYOV-BQYQJAHWSA-N 0.000 claims 1
- 208000003643 Callosities Diseases 0.000 claims 1
- 206010020649 Hyperkeratosis Diseases 0.000 claims 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 44
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 44
- 239000011574 phosphorus Substances 0.000 abstract description 44
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000499 gel Substances 0.000 abstract description 5
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000002386 leaching Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 18
- 239000002689 soil Substances 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 5
- 230000001737 promoting effect Effects 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 241001474374 Blennius Species 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002686 phosphate fertilizer Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 239000000783 alginic acid Substances 0.000 description 2
- 229920000615 alginic acid Polymers 0.000 description 2
- 235000010443 alginic acid Nutrition 0.000 description 2
- 229960001126 alginic acid Drugs 0.000 description 2
- 150000004781 alginic acids Chemical class 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 238000003044 randomized block design Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009331 sowing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 238000013316 zoning Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229920000805 Polyaspartic acid Polymers 0.000 description 1
- 108010020346 Polyglutamic Acid Proteins 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 229940024606 amino acid Drugs 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 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
- 230000008979 phosphorus utilization Effects 0.000 description 1
- 108010064470 polyaspartate Proteins 0.000 description 1
- 229920002643 polyglutamic acid Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002786 root growth Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical class S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000002352 surface water Substances 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
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- 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 present invention relates to a kind of control nitrogen to promote phosphorous synergia compound fertilizer material and its preparation method and application, the complex fertilizer raw material includes urea, double superhosphate, potassium chloride, trace element, polymer, further includes the combination of one or both of modified alta-mud, modified zeolite suitable proportion；Wherein, the dosage of modified alta-mud and/or modified zeolite is the 1%~45% of raw material total amount.The preparation of preparation of the preparation method including urea hydrogel, modified alta-mud and/or modified zeolite；Material mixing granulation will be granulated, the urea gel of pressurized spray heat is granulated afterwards to obtain the final product.Compound fertilizer of the present invention enhances the slow release effect of Nitrogen, slows down phosphorus fixation, improves utilization rate of fertilizer up to 5~7%；Fertilizer nitrogen phosphorus leaching and runoff loss are reduced, avoids secondary pollution, reduces agriculture production cost, and wide with raw material sources, transport, using convenient the features such as beneficial to mechanical work, has a extensive future in synergia compound fertilizer production.
Description
Technical field
The present invention relates to a kind of enhanced fertilizer and preparation method and applications more particularly to a kind of control nitrogen to promote phosphorous synergy compound
Fertilizer and preparation method and application.
Background technology
The production of compound fertilizer amount and consumption figure in China are very huge, but it is to restrict China's agricultural development that utilization rate of fertilizer is low
A big bottleneck.The excessive application of conventional chemical fertilizers causes largely to fail to be absorbed by crops the nitrogenous fertilizer utilized or phosphate fertilizer passes through ground
The mode of table runoff and subrosion enters surface and ground water body.Main Sewage Water Emissions amount has more than four one-tenth to come at present
From agricultural pollution source, COD discharge capacity is 1324.09 ten thousand tons, accounts for the 43.7% of COD total emission volumn, always
Nitrogen, the discharge capacity of total phosphorus are respectively 270.46 ten thousand tons and 28.47 ten thousand tons, account for the 57.2% and 67.4% of total emission volumn.
Solve the basic of problem above, it is necessary to break through traditional fertilization custom, research and develop new-type fertilizer synergist, improve fertilizer nitrogen
Phosphorus utilization.At present, main fertilizer synergistic technology is that humic acid, alginic acid are added in complex fertilizer production process both at home and abroad
It is modified with natural active products confrontation urea such as amino acid, so as to improve the nitrogen utilization efficiency of fertilizer.Agricultural University Of South China grinds
Studied carefully synergistic effect of the seaweed industrial solid waste to urea, the Chinese Academy of Agricultural Sciences's zoning be prepared for fertilizer using the seaweed liquid to ferment
Synergist (a kind of fermentation liquid seaweed extract material synergist and its production method and purposes as disclosed in CN102701866A) and seaweed
Uraturia element (a kind of Algae synergistic urea and its production method and purposes as disclosed in CN102515945A), and realize alginic acid
The industrialization production of urea.The Chinese Academy of Agricultural Sciences's zoning has developed humic acid fertilizer auxiliary agent within 2011, and develops humic acid urine
Plain new product.Poly-aspartic-acid have it is extremely strong chelate, disperse and suction-operated, Donlar companies of the U.S., Germany in 1996
Bayer companies and BASF AG realize large-scale production, the middle peasant's Rayleigh source Science and Technology Ltd. of Beijing in 2000, Shi Jia in succession
Village desai Chemical Co., Ltd. is further made into enhanced fertilizer, for agricultural production.Xin Yang plump industry in Hubei is limited at present
Company and Central China agricultural university have developed polyglutamic acid Synergistic composite fertilizer cooperatively, have section fertilizer, the effect of increasing both production and income well.However
More than invention only has synergistic effect to the nitrogen in fertilizer, can not realize synergy to the phosphorus in fertilizer, can not accomplish to control simultaneously
Nitrogen promotees phosphorus.
The content of the invention
In view of the deficiencies of the prior art, the present invention provide a kind of control nitrogen promote phosphorous synergia compound fertilizer material and preparation method thereof and
Using synergia compound fertilizer material of the invention can effectively control the Nitrogen releasing in fertilizer, while reduce in fertilizer phosphorus in soil
In fixation, effectively improve the utilization rate of Nitrogen, Phosphorus, preparation method is simple, and protect the fields environment, for promote industrialized agriculture
Sustainable development provide technical support.
Term explanation：
Complex fertilizer：It is the solid fertilizer that appropriate trace element can be added using a great number of elements nitrogen, phosphorus, potassium as main component.
Technical scheme is as follows：
A kind of control nitrogen promotees phosphorous synergia compound fertilizer material, and raw material includes urea, double superhosphate, potassium chloride, trace element, poly-
Object is closed, further includes the combination of one or both of modified alta-mud, modified zeolite suitable proportion；Wherein, modified alta-mud and/
Or 1%~45% that the dosage of modified zeolite is raw material total amount；
The modified alta-mud refers to through one kind in persulfuric acid, nitric acid, hydrochloric acid or arbitrary two or more mixed and modified
Inorganic acid-modified bentonite or through one kind in performic acid, acetic acid, citric acid, humic acid or arbitrary two or more mixing
Modified modified with organic acids bentonite.
The modified zeolite is through one kind in persulfuric acid, nitric acid, hydrochloric acid or arbitrary two or more mixed and modified nothings
Machine acid modified zeolite.
The polymer is polyacrylamide, polyvinyl alcohol, acrylate copolymer Carbopol 934, Carbopol
940th, one kind in Carbopol ETD2050 or arbitrary two or more mixing；Wherein polyacrylamide average molecular weight 8,000,000,
Polyvinyl alcohol average molecular weight 40,000.
According to the present invention preferably, the modified alta-mud, the mass ratio of modified zeolite are 1：(1~10).Further
Preferably, the modified alta-mud, the mass ratio of modified zeolite are 1：1.
It is preferred according to the present invention, the modified alta-mud and/or the dosage of modified zeolite for raw material total amount 1%~
25%.
According to the present invention it is further preferred that the inorganic acid-modified bentonite is prepared as follows：With 1kg
Bentonite is scattered in 20L water, adds in l L inorganic acids, and 90 DEG C of stirring 4h are cleaned to supernatant weakly acidic pH, 105 DEG C of drying, mill
Carefully, cross 200 mesh sieves to get.
According to the present invention it is further preferred that the modified with organic acids bentonite is prepared as follows：It takes
It states inorganic acid-modified bentonite 1kg to be scattered in 20L water, 23gL is added in into bucket-1Organic acid soln 866mL, stirring
After 30min, pH to 3,60 DEG C of heating stirring 20h are adjusted, centrifugation once, adds water cleaning once to centrifuge again, 60 DEG C of drying after centrifugation,
It is levigate, cross 200 mesh sieves to get.
According to the present invention it is further preferred that the inorganic acid modified zeolite is prepared as follows：By 1kg 200
Mesh zeolite adds in 8L0.1mol/L inorganic acids, 60 DEG C of heating stirring 3-4h, and then filtration washing 3-5 times is dried to obtain modified boiling
Stone.
Preferred according to the present invention, the urea is powdered.
Preferred according to the present invention, the trace element is introduced by containing the compound of trace element, including seven water
Ferrous sulfate, white vitriol, ammonium molybdate, boric acid, in mass ratio 1：(0.4~1.0)：(0.2~1)：The group of (0.2~0.5)
It closes, one of which or arbitrary two or more mixing.It is further preferred that ferrous sulfate heptahydrate, white vitriol, ammonium molybdate, boron
The mass ratio of acid is 1：0.5：03：0.3.
Preferred according to the present invention, a kind of control nitrogen promotees phosphorous synergia compound fertilizer material, includes the raw material of following mass parts：Urea
15~30 parts, 15~35 parts of double superhosphate, 15~25 parts of potassium chloride, 1~4 part of trace element；0.001~0.1 part of polymer,
1~10 part of modified alta-mud, 1~10 part of modified zeolite.
According to the present invention it is further preferred that the control nitrogen promotees phosphorous synergia compound fertilizer material, include the original of following mass parts
Material：30 parts of urea, 18 parts of double superhosphate, 20 parts of potassium chloride, 4 parts of trace element；0.1 part of polymer, 3 parts of modified alta-mud,
3 parts of modified zeolite.
According to the present invention, the control nitrogen promotees the preparation method of phosphorus enhanced fertilizer, including step：
(1) dissolve a polymer in water and form gluey aqueous solution, it is for use that urea dissolving is wherein formed urea hydrogel；
(2) modified alta-mud and/or modified zeolite are prepared as stated above；
(3) after material double superhosphate, potassium chloride, modified alta-mud and/or modified zeolite, trace element mixing will be granulated
It puts into rotary drum granulator；Mixing granulation on the urea hydrogel of pressurized spray heating to granulation material；
(4) fertiliser granulates are polished shaping to 2~2.5 millimeters of circular granulars, be dried to product water content 15~
20wt% is cooled down, sieved to obtain the final product.
Preferred according to the present invention, the amount ratio of urea and water is 1 in step (1):1.
Preferred according to the present invention, the pressure of pressure process is 15-17 atmospheric pressure in step (3), urea hydrogel
Heating temperature is 60-80 DEG C, and spraying flow is 900-1400kg/h.
It is preferred according to the present invention, product water content 15wt% is dried in step (4).
Unless otherwise indicated, " % " according to the present invention is weight percentage.Raw material used in the present invention is not special
It is conventional commercial not mentionlet alone bright.
The control nitrogen of the present invention promotees phosphorous synergia compound fertilizer material and is suitable for the field crops such as wheat, corn, mainly as base manure
It uses, it also can top dressing use.The present invention control nitrogen rush phosphorous synergia compound fertilizer usage amount need to according to soil regime, make article
The factors such as kind, Crop growing stage, crop nutrition condition are determined.
In terms of field test results, it is notable to fertilizer nitrogen phosphorus synergy that more than crop applying control nitrogen promotees phosphorous complex fertilizer.Subtract
Fertilizer amount is lacked, utilization rate of fertilizer improves 5~7%.During for corn planting, when base is reduced 20% to fertilize and peasant habit
(30kg/ mus) corn yield maintains an equal level；During for wheat planting, base is reduced small with peasant habit (40kg/ mus) when 15% to fertilize
Wheat yield maintains an equal level.
Compared with prior art, the present invention has the following advantages：
Polymer in raw material of the present invention remains to form gel in the soil after being granulated with the gel that urea is formed, as load
Body has significant slow release effect to the nitrogen in fertilizer.The modified bentonite of acid and zeolite are manured into soil as fertilizer composition
Afterwards, hydrogen ion can be released, acidic micro-environment is formed around fertilizer, so as to reduce the fixation of phosphate fertilizer in the soil, is increased
The utilizing status of phosphate fertilizer in the soil.
Compared with prior art, the invention has the advantages that：
Control nitrogen rush phosphorous synergia compound fertilizer product prepared by the present invention is upper in nutrients release and utilization, enhances Nitrogen
Slow release effect, slow down phosphorus fixation, improve utilization rate of fertilizer；In application effect, crop root growth can be promoted, carried
High root activity, enhancing crop absorb the ability of nutrient；Agricultural operation can be simplified in farming；It can be improved in benefit foster
Divide utilization rate 5~7%；Fertilizer nitrogen phosphorus leaching and runoff loss can be reduced, avoids secondary pollution, reduces agriculture production cost,
And, transport, using convenient wide with raw material sources, the features such as beneficial to mechanical work, the application prospect in synergia compound fertilizer production
It is wide.
Specific embodiment
With reference to embodiment, the present invention will be further described, but is not limited only to this.
It is raw materials used in embodiment to be described as follows：
Urea：Powdered, Shandong Ming Shui Dahua Groups are on sale, nitrogen content 46%；
Double superhosphate：Sichuan Province Shifang river letter phosphorous chemical industry is on sale, P2O5>=44%；
Potassium chloride：Shandong Ming Shui Dahua Groups are on sale, K2O content 60%；
Boric acid：Jinan, Shandong Province Ze Yang Chemical Co., Ltd.s are on sale, Russian import technical pure, Boron contents >=17%；
Ferrous sulfate heptahydrate, white vitriol, ammonium molybdate：Tianjin Reagent Company is on sale, and chemistry is pure；
Humic acid：Jinan Tong Sheng Food Co., Ltd is on sale, feed grade, content >=90%；
Polyacrylamide, polyvinyl alcohol, acrylate copolymer：Jinan Hai Pu Chemical Co., Ltd.s are on sale.
Embodiment 1：
A kind of preparation method controlled nitrogen and promote phosphorus synergia compound fertilizer material, step are as follows：
(1) prepared by urea hydrogel：The acrylate copolymer Carbopol 940 of 10g is added in 2000g water and forms water
Solution, it is for use that dissolving 2000g urea forms urea hydrogel；
(2) prepared by acid-modified bentonite：It is scattered in 200 mesh bentonites of 1kg in 20L water, adds in lL nitric acid, 90 DEG C are stirred
4h is mixed, is cleaned to supernatant weakly acidic pH, 105 DEG C dry, levigate, cross 200 mesh sieves, spare.
(3) will be granulated 34 parts of material double superhosphate, 25 parts of potassium chloride, 5 parts of acid-modified bentonite, trace element (including
Ferrous sulfate heptahydrate, white vitriol, ammonium molybdate, boric acid) 3 parts, ferrous sulfate heptahydrate, white vitriol, ammonium molybdate, boric acid
Mass ratio is 1：0.5：03：0.3.It is put into after mixing in rotary drum granulator；Urea hydrogel is heated to 80 in heating tank
DEG C, it is 15 atmospheric pressure to adjust pressure pump pressure, will heat 33 parts of hydrogel, granulation material is sprayed to the flow of 900kg/h
On, form complex fertilizer particle.
(4) fertiliser granulates are polished shaping to 2~2.5 millimeters of circular granulars, are dried to product water content 15wt%,
Cooling, screening, produce N-P2O5-K2O formulas promote phosphorus synergia compound fertilizer material for the control nitrogen of 10-15-15.
Embodiment 2：
A kind of preparation method controlled nitrogen and promote phosphorus synergia compound fertilizer material, step are as follows：
(1) prepared by urea hydrogel：The polyacrylamide of 6g is added in 2000g water and forms aqueous solution, dissolving 2000g urine
It is for use that element forms urea hydrogel；
(2) prepared by modified with organic acids bentonite：Bentonite 1kg after the inorganic acid activation of Example 1 is scattered in 20L water
In, 23gL is added in into bucket-1Humic acid solution 866mL, stir 30min after, adjust pH to 3,60 DEG C of heating stirring 20h,
Centrifugation once, adds water cleaning once to centrifuge again, and 60 DEG C of drying, levigate after centrifugation, crosses 200 mesh sieves, spare.
(3) will be granulated 23 parts of material double superhosphate, 17 parts of potassium chloride, 6 parts of acid-modified bentonite, trace element (including
Ferrous sulfate heptahydrate, white vitriol, ammonium molybdate, boric acid) 4 parts, ferrous sulfate heptahydrate, white vitriol, ammonium molybdate, boric acid matter
Amount is than being 1：0.5：0.4：0.2.It is put into after mixing in rotary drum granulator；Urea gel is heated to 80 DEG C in heating tank,
It is 15 atmospheric pressure to adjust pressure pump pressure, will heat 50 parts of hydrogel, is sprayed to and be granulated on material with the flow of 1000kg/h,
Form complex fertilizer particle.
(4) fertiliser granulates are polished shaping to 2~2.5 millimeters of circular granulars, are dried to product water content 20wt%,
Cooling, screening, produce N-P2O5-K2O formulas promote phosphorus synergia compound fertilizer material for the control nitrogen of 15-10-10.
Embodiment 3：
A kind of preparation method controlled nitrogen and promote phosphorus synergia compound fertilizer material, step are as follows：
(1) prepared by urea hydrogel：The polyvinyl alcohol of acrylate copolymer the Carbopol ETD2050,1.5g of 2g are added
Enter and aqueous solution is formed in 2000g water, it is for use that dissolving 2000g urea forms urea hydrogel；
(2) prepared by inorganic acid-modified bentonite：It is scattered in 1kg bentonites in 20L water, adds in the lL concentrated sulfuric acids, 90 DEG C are stirred
4h is mixed, is cleaned to supernatant weakly acidic pH, 105 DEG C dry, levigate, cross 200 mesh sieves, spare.
It is prepared by sour modified zeolite：1kg zeolites 8L 0.1mol/L hydrochloric acid, 60 DEG C of heating stirring 3-4h, then filtration washing
3-5 times, it is dried to obtain modified zeolite.
(3) 18 parts of material double superhosphate will be granulated, 20 parts of potassium chloride, 3 parts of acid-modified bentonite, sour 3 parts of modified zeolite,
4 parts of micro- (including ferrous sulfate heptahydrate, white vitriol, ammonium molybdate, boric acid), ferrous sulfate heptahydrate, white vitriol,
Ammonium molybdate, boric acid mass ratio are 1：0.5：0.4：0.2.It is put into after mixing in rotary drum granulator；By urea gel in heating tank
In be heated to 80 DEG C, it is 16 atmospheric pressure to adjust pressure pump pressure, will heat 60 parts of hydrogel, and be sprayed with the flow of 1400kg/h
To being granulated on material, complex fertilizer particle is formed.
(4) fertiliser granulates are polished shaping to 2~2.5 millimeters of circular granulars, are dried to product water content 17wt%,
Cooling, screening, produce N-P2O5-K2O formulas promote phosphorus synergia compound fertilizer material for the control nitrogen of 18-8-12.
Experimental example 1：It controls nitrogen and promotees application effect experiment of the phosphorus synergia compound fertilizer on wheat
1 material and method
1.1 test material
It tests and is carried out in October, 2016 in June, 2017 in the peaceful village in Shandong Province Jiyang County peace town two.Annual gas
12.5 DEG C of temperature, 580.5 millimeters of mean annual precipitation are poured when arid using underground water motor-pumped well.
It is moisture soil for examination soil.The soil organism 1.14%, available nitrogen 35.90mg/kg, rapid available phosphorus 32.30mg/kg, speed
Imitate potassium 108.76mg/kg, pH7.2.Wheat breed be Jimai 22,10 kgs/acre of application rate.
1.2 test methods and process
Experiment fertilizer：It controls nitrogen and promotees the N-P that phosphorus synergia compound fertilizer is embodiment 32O5-K2O formulas promote phosphorus for the control nitrogen of 18-8-12
Synergia compound fertilizer product.
It tests as RANDOMIZED BLOCK DESIGN, experiment sets 4 processing, is repeated 3 times.Experiment sets following processing：Processing 1, peasant practise
Used fertilising, base fertilizer apply 40 kilograms of the commercially available compound fertilizers of content 18-8-12 per acre, and phase jointing stage imposes 20 kilograms of urea per acre；Processing
2, control nitrogen promotees phosphorus synergia compound fertilizer, and the jointing stage imposes 20 kilograms of urea per acre；Processing 3, control nitrogen promote the fertilising of phosphorus synergia compound fertilizer and subtract
Amount 10%, base fertilizer apply control nitrogen and promote 36 kilograms of phosphorus synergia compound fertilizer per acre, and the jointing stage imposes 18 kilograms of urea per acre；Nitrogen is controlled in processing 4
Promote phosphorus synergia compound fertilizer fertilising decrement 15%, base fertilizer applies control nitrogen and promotees 34 kilograms of phosphorus synergia compound fertilizer per acre, and the jointing stage imposes per acre
17 kilograms of urea；.30 square metres of plot area.Each processing dose situation is shown in Table 1.
Table 1 respectively handles fertilizer amount (kg/acre)
| Processing | Commercially available compound fertilizer | Synergia compound fertilizer | N | P2O5 | K2O |
| 1 | 40 | 7.2 | 3.2 | 4.8 | |
| 2 | 40 | 7.2 | 3.2 | 4.8 | |
| 3 | 36 | 6.5 | 3 | 4.5 | |
| 4 | 34 | 6.1 | 2.7 | 4 |
All commercially available compound fertilizer and control nitrogen rush phosphorus synergia compound fertilizer all do base fertilizer application, and urea is applied in the jointing stage.2016
Sowing on October 15, in, chases after urea, harvests June 10 on April 12nd, 2017.
2 results and analysis
Meter production is carried out after harvesting wheat, different disposal output condition is shown in Table 2.
2 different disposal wheat yield of table
In terms of 2 result of table, promoting phosphorus synergia compound fertilizer using control nitrogen has apparent production-increasing function.In application on an equal basis with quantization
In the case of fertilizer, control nitrogen promotees the processing of phosphorus synergia compound fertilizer than peasant habit fertilising 75.06 kilograms of wheat of volume increase, and amount of increase in production reaches
13.46%；In the case where reducing control nitrogen and promoting phosphorus synergia compound fertilizer dosage 10%, apply fertilizer than peasant habit and increase production wheat 31.13
Kilogram, amount of increase in production reaches 5.58%；In the case where reducing control nitrogen and promoting phosphorus synergia compound fertilizer dosage 15%, applied than peasant habit
Fertile 3.05 kilograms of underproduction wheat, shows no increases in output substantially.
Experimental example 2：It controls nitrogen and promotees the application effect experiment of phosphorus synergia compound fertilizer on corn
1 material and method
1.1 test material
It tests and is carried out in June, 2017 in October, 2017 in the peaceful village in Shandong Province Jiyang County peace town two.Annual gas
12.5 DEG C of temperature, 580.5 millimeters of mean annual precipitation are poured when arid using underground water motor-pumped well.
For being moisture soil for examination soil.The soil organism 1.14%, available nitrogen 35.90mg/kg, rapid available phosphorus 32.30mg/kg,
Available potassium 108.76mg/kg, pH7.2.Corn variety is truly single 20,4500 plants/acre of thickness of sowing.
1.2 test methods and process
Experiment fertilizer：It controls nitrogen and promotees the N-P that phosphorus synergia compound fertilizer is embodiment 22O5-K2O formulas control nitrogen for 15-10-10 and promote phosphorus increasing
Imitate compound fertilizer product.
It tests as RANDOMIZED BLOCK DESIGN, experiment sets 4 processing, is repeated 3 times.Experiment sets following processing：Processing 1, peasant practise
Used fertilising, seedling stage impose 30 kilograms of the commercially available compound fertilizers of content 15-10-10 per acre, and the typhon mouth phase imposes 30 kilograms of urea per acre；
Processing 2, control nitrogen promote phosphorus synergia compound fertilizer, and seedling stage imposes control nitrogen and promotees 30 kilograms of phosphorus synergia compound fertilizer per acre, and the typhon mouth phase is per acre
Impose 30 kilograms of urea；Processing 3, control nitrogen promote phosphorus synergia compound fertilizer fertilising decrement 10%, and seedling stage imposes control nitrogen and promotees phosphorus synergy per acre
27 kilograms of compound fertilizer, typhon mouth phase impose 27 kilograms of urea per acre；Processing 4, control nitrogen promote phosphorus synergia compound fertilizer fertilising decrement
20%, seedling stage imposes control nitrogen and promotees 24 kilograms of phosphorus synergia compound fertilizer per acre, and the typhon mouth phase imposes 24 kilograms of urea per acre.Cell face
30 square metres of product.Each processing dose situation is shown in Table 3.
Table 3 respectively handles fertilizer amount (kg/acre)
| Processing | Commercially available compound fertilizer | Synergia compound fertilizer | N | P2O5 | K2O |
| 1 | 30 | 4.5 | 3 | 3 | |
| 2 | 30 | 4.5 | 3 | 3 | |
| 3 | 27 | 4.1 | 2.7 | 2.7 | |
| 4 | 24 | 3.6 | 2.4 | 2.4 |
All commercially available compound fertilizer and control nitrogen rush phosphorus synergia compound fertilizer all do base fertilizer application, and urea is applied in the typhon mouth phase.
On June 15th, 2017 is sowed, and July 5 applied fertilizer for the first time, and August imposes urea on the 5th, harvests October 6.
2 results and analysis
Meter production is carried out after harvest corn, different disposal output condition is shown in Table 4.
4 different disposal corn yield of table compares
In terms of 4 result of table, promoting phosphorus synergia compound fertilizer using control nitrogen has apparent production-increasing function.In application on an equal basis with quantization
In the case of fertilizer, control nitrogen promotees the processing of phosphorus synergia compound fertilizer than peasant habit fertilising 86.7 kilograms of corn of volume increase, and amount of increase in production reaches
17.03%；In the case where reducing synergia compound fertilizer dosage 10%, apply fertilizer than peasant habit and increase production 28.5 kilograms of corn, volume increase
Amplitude reaches 5.71%；In the case where reducing control nitrogen and promoting phosphorus synergia compound fertilizer dosage 20%, with peasant habit fertilising corn production
Amount remains basically stable.
To sum up experiment is understood：It controls nitrogen and promotees phosphorus synergia compound fertilizer obvious effect of increasing production, this is applied under the conditions of equal fertilizer amount
Fertilizer increases production corn more than 17.03%；The fertilizer is applied under the conditions of equal fertilizer amount, increases production wheat more than 13.46%；With reference to soil
Earth data can calculate chemical fertilizer utilization ratio and improve 5~7%.
Claims (10)
1. a kind of control nitrogen promotees phosphorous synergia compound fertilizer material, which is characterized in that raw material includes urea, double superhosphate, potassium chloride, micro-
Secondary element, polymer further include the combination of one or both of modified alta-mud, modified zeolite suitable proportion；Wherein, it is modified
The dosage of bentonite and/or modified zeolite is the 1%~45% of raw material total amount；The modified alta-mud refer to through persulfuric acid,
One kind in nitric acid, hydrochloric acid or arbitrary two or more mixed and modified inorganic acid-modified bentonites or through performic acid, acetic acid,
One kind or arbitrary two or more mixed and modified modified with organic acids bentonites in citric acid, humic acid；The modified zeolite
It is through one kind in persulfuric acid, nitric acid, hydrochloric acid or arbitrary two or more mixed and modified inorganic acid modified zeolites；The polymerization
Object is polyacrylamide, polyvinyl alcohol, acrylate copolymer Carbopol 934, Carbopol 940, Carbopol
One kind or arbitrary two or more mixing in ETD2050；Wherein polyacrylamide average molecular weight 8,000,000, polyvinyl alcohol is average
Molecular weight 40,000.
2. control nitrogen promotees phosphorous synergia compound fertilizer material as described in claim 1, which is characterized in that the modified alta-mud changes
Property zeolite mass ratio be 1：(1~10)；Preferably, the modified alta-mud, the mass ratio of modified zeolite are 1：1.
3. control nitrogen promotees phosphorous synergia compound fertilizer material as described in claim 1, which is characterized in that the modified alta-mud and/
Or 1%~25% that the dosage of modified zeolite is raw material total amount.
4. control nitrogen promotees phosphorous synergia compound fertilizer material as described in claim 1, which is characterized in that
The inorganic acid-modified bentonite is prepared as follows：It is scattered in 1kg bentonites in 20L water, adds in lL
Inorganic acid, 90 DEG C of stirring 4h, is cleaned to supernatant weakly acidic pH, and 105 DEG C of drying are levigate, cross 200 mesh sieves to get；
The modified with organic acids bentonite is prepared as follows：Above-mentioned inorganic acid-modified bentonite 1kg is taken to be scattered in
In 20L water, 23gL is added in into bucket-1Organic acid soln 866mL, stir 30min after, adjust pH to 3,60 DEG C of heating stirrings
20h, centrifugation once, add water cleaning once centrifuge again, after centrifugation 60 DEG C drying, it is levigate, cross 200 mesh sieves to get；
The inorganic acid modified zeolite is prepared as follows：It is inorganic that 200 mesh zeolites of 1kg are added in into 8L 0.1mol/L
Acid, 60 DEG C of heating stirring 3-4h, then filtration washing 3-5 times are dried to obtain modified zeolite.
5. control nitrogen promotees phosphorous synergia compound fertilizer material as described in claim 1, which is characterized in that raw material includes appointing in the following conditions
It is one or more：
A1 the urea described in) is powdered；
A2 the trace element described in) is introduced by containing the compound of trace element, including ferrous sulfate heptahydrate, seven water sulfuric acid
Zinc, ammonium molybdate, boric acid, in mass ratio 1：(0.4~1.0)：(0.2~1)：The combination of (0.2~0.5), one of which or arbitrary
Two or more mixing；It is further preferred that the mass ratio of ferrous sulfate heptahydrate, white vitriol, ammonium molybdate, boric acid is 1：0.5：
03：0.3.
6. control nitrogen promotees phosphorous synergia compound fertilizer material as described in claim 1, which is characterized in that includes the original of following mass parts
Material：15~30 parts of urea, 15~35 parts of double superhosphate, 15~25 parts of potassium chloride, 1~4 part of trace element；Polymer 0.001
~0.1 part, 1~10 part of modified alta-mud, 1~10 part of modified zeolite.
7. control nitrogen promotees phosphorous synergia compound fertilizer material as claimed in claim 6, which is characterized in that the control nitrogen promotees phosphorous synergy and answers
Complex fertilizer material includes the raw material of following mass parts：30 parts of urea, 18 parts of double superhosphate, 20 parts of potassium chloride, 4 parts of trace element；It is poly-
Close 0.1 part of object, 3 parts of modified alta-mud, 3 parts of modified zeolite.
8. control nitrogen promotees the preparation method of phosphorous synergia compound fertilizer material as described in claim 1, which is characterized in that including step：
(1) dissolve a polymer in water and form gluey aqueous solution, it is for use that urea dissolving is wherein formed urea hydrogel；
(2) modified alta-mud and/or modified zeolite are prepared as stated above；
(3) put into after material double superhosphate, potassium chloride, modified alta-mud and/or modified zeolite, trace element mixing will be granulated
Into rotary drum granulator；Mixing granulation on the urea hydrogel of pressurized spray heating to granulation material；
(4) fertiliser granulates are polished shaping to 2~2.5 millimeters of circular granulars, are dried to product 15~20wt% of water content,
It cools down, sieve to obtain the final product.
9. as claimed in claim 8 control nitrogen promote phosphorous synergia compound fertilizer material preparation method, which is characterized in that step include with
Any one of lower condition is multinomial：
B1) amount ratio of urea and water is 1 in step (1):1；
B2) pressure of pressure process is 15-17 atmospheric pressure in step (3), and the heating temperature of urea hydrogel is 60-80 DEG C,
Spraying flow is 900-1400kg/h；
B3) product water content 15wt% is dried in step (4).
10. control nitrogen promotees phosphorous synergia compound fertilizer material for field crops such as wheat, corns as described in claim 1, as base
Fertilizer uses or top dressing uses.
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