WO2023226911A1 - 一种具有保水保肥功能的复合肥料的制备方法 - Google Patents
一种具有保水保肥功能的复合肥料的制备方法 Download PDFInfo
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- WO2023226911A1 WO2023226911A1 PCT/CN2023/095435 CN2023095435W WO2023226911A1 WO 2023226911 A1 WO2023226911 A1 WO 2023226911A1 CN 2023095435 W CN2023095435 W CN 2023095435W WO 2023226911 A1 WO2023226911 A1 WO 2023226911A1
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- WIPO (PCT)
- Prior art keywords
- fertilizer
- compound fertilizer
- preparation
- water
- compound
- Prior art date
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 107
- 150000001875 compounds Chemical class 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 235000015097 nutrients Nutrition 0.000 title abstract description 11
- 230000014759 maintenance of location Effects 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000126 substance Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000005469 granulation Methods 0.000 claims abstract description 15
- 230000003179 granulation Effects 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000010455 vermiculite Substances 0.000 claims abstract description 14
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 14
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000000440 bentonite Substances 0.000 claims abstract description 10
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000047 product Substances 0.000 claims description 11
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 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
- 238000000034 method Methods 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
- 238000005265 energy consumption Methods 0.000 claims description 4
- 239000010419 fine particle Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 4
- 239000006012 monoammonium phosphate Substances 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000011265 semifinished product Substances 0.000 claims description 4
- 235000019270 ammonium chloride Nutrition 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
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 claims description 2
- 235000013877 carbamide Nutrition 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
- 239000002426 superphosphate Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000005923 long-lasting effect Effects 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 238000011282 treatment Methods 0.000 description 12
- 239000002689 soil Substances 0.000 description 10
- 240000008042 Zea mays Species 0.000 description 9
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 9
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 9
- 235000005822 corn Nutrition 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 125000002091 cationic group Chemical group 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004720 fertilization Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 235000021049 nutrient content Nutrition 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 229960003975 potassium Drugs 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 238000009331 sowing Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 229920000945 Amylopectin Polymers 0.000 description 1
- 235000001405 Artemisia annua Nutrition 0.000 description 1
- 240000000011 Artemisia annua Species 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000005696 Diammonium phosphate Substances 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 150000001767 cationic compounds Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012272 crop production Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 210000003278 egg shell Anatomy 0.000 description 1
- 239000000839 emulsion Substances 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
- 238000011049 filling Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001508 potassium citrate Substances 0.000 description 1
- 229960002635 potassium citrate Drugs 0.000 description 1
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
- 235000011082 potassium citrates Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 238000003044 randomized block design Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 235000010268 sodium methyl p-hydroxybenzoate Nutrition 0.000 description 1
- 239000004290 sodium methyl p-hydroxybenzoate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- PESXGULMKCKJCC-UHFFFAOYSA-M sodium;4-methoxycarbonylphenolate Chemical compound [Na+].COC(=O)C1=CC=C([O-])C=C1 PESXGULMKCKJCC-UHFFFAOYSA-M 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- 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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Definitions
- the invention relates to a method for preparing a compound fertilizer with the function of retaining water and fertilizer, and belongs to the technical field of fertilizers.
- Chemical fertilizers are one of the important material inputs in agricultural production. According to statistics from the Food and Agriculture Organization of the United Nations (FAO), chemical fertilizers account for more than half of the increase in crop production. The application of chemical fertilizers plays a crucial role in ensuring the effective supply of agricultural products. Our country has a large population and a relative lack of arable land. We must rely on increasing the yield and efficiency per unit area to ensure food security. The application of chemical fertilizers has been, is and will be one of the most effective measures to increase agricultural product production in the past. Since chemical fertilizers are easily decomposed and lost, they cannot be absorbed and utilized by crops in time, and their utilization rate is low. How to reduce fertilizer nutrient loss and improve fertilizer utilization efficiency has become an urgent problem that needs to be solved.
- FEO Food and Agriculture Organization of the United Nations
- Fertilizers with the function of retaining water and fertilizer are an effective way to solve the problems of low water resource utilization and low fertilizer utilization.
- organic compounds such as polymer resins are mostly used as water-retaining or fertilizer-retaining agents added to fertilizers to achieve the function of retaining water and fertilizer.
- the production process is relatively complex and has poor stability, which greatly increases the production cost of fertilizers and limits the production to a large extent. application in production.
- Chinese patent document CN 104098381A discloses a water-retaining and yield-increasing slow-release compound fertilizer.
- the fertilizer is made of the following raw materials by weight: 1250-2000 mesh diatomite 10-15, calcium chloride 5-6, sodium borate 4-5 , potassium citrate 18-20, urea 23-25, diammonium phosphate 20-25, crop scraps fermentation liquid 15-18, livestock plasma 4-5, vinegar grains 10-12, egg shell powder 1-3, pig Paihuan 2-3, Sodium toosendan powder 1-2, Soybean peptide powder 2-3, Earthworm feces 6-8, Dried corn ears 4-5, Sodium methyl parahydroxybenzoate 1-2, Cross-linked polyvinylpyrrolidone 10-12.
- the compound fertilizer prepared by this invention uses diatomite and a slow-release coating agent to form a double coating of nutrients. The nutrients are not easily lost, the fertilizer effect is more lasting, and it has the ability to retain water and resist drought. Meet the nutrients required for crop growth at all stages without damaging the soil ecological environment.
- Chinese patent document CN101113119A discloses a water-retaining fertilizer and a preparation method thereof.
- the water-retaining fertilizer is compounded of 90-99wt% cationic super-absorbent resin and 1-10wt% chelated nutrient solution.
- the super-absorbent resin is cationic.
- Type polyacrylic acid-acrylamide forms a copolymer.
- a copolymer is formed from acrylic acid, acrylamide, and a cationic compound.
- the mass percentages of each monomer are acrylic acid 5-40wt% and acrylamide 5wt%. -40wt%, cationic monomer 0.01-5wt%, deionized water as the balance.
- This invention introduces a new cationic monomer in the production of water-absorbent resin to improve the water absorption of water-retaining materials.
- Chinese patent document CN103589436A discloses a soil water and fertilizer retaining agent, which contains the following raw materials in a weight ratio: 15-35wt% carboxymethyl cellulose, 35-55wt% amylopectin, and 10-25wt% Artemisia annua seeds. Gum and 5-20wt% brown sugar. This invention introduces carboxymethyl cellulose (CMC), which has strong water absorption and long-term moisturizing stability in mud.
- CMC carboxymethyl cellulose
- CN 106045669A discloses a compound fertilizer and a preparation method thereof, including chemical fertilizer and a synergist, and the synergist is an amino acid-modified organopolysiloxane emulsion.
- the present invention provides a method for preparing a compound fertilizer with the function of retaining water and fertilizer.
- the compound fertilizer obtained by the invention has strong water absorption and water retention properties and long-lasting fertilizer effect.
- the compound fertilizer includes chemical fertilizer raw materials, fillers and synergists.
- the synergist is vermiculite powder with a particle size of 200-400 mesh, accounting for 5% of the weight of the compound fertilizer. -10%, the filler is bentonite;
- the preparation method of compound fertilizer with the function of retaining water and fertilizer includes the following steps:
- the particle size of vermiculite powder is 200-400 mesh.
- the particle size of vermiculite powder is 300-400 mesh.
- the synergist accounts for 8-10% of the weight of the compound fertilizer.
- the filler accounts for 5-20% of the weight of the compound fertilizer.
- the particle size of bentonite is 100-200 mesh.
- the fertilizer raw material is one or a mixture of two or more of urea, ammonium sulfate, ammonium chloride, monoammonium phosphate, superphosphate, potassium sulfate or potassium chloride.
- Vermiculite is a plate-shaped natural clay mineral formed from ultrabasic complexes through hydrothermal alteration and later weathering. It has renewable characteristics.
- the chemical composition of vermiculite can be roughly represented by [Mg 3 (Si 3 Al)O 10 (OH) 2 ][Mg 0.5 (H 2 O)y]. It is a layered magnesium-containing aluminum silicate. Its basic The structural unit consists of two layers of silicate (a small amount of aluminate) tetrahedrons sandwiched by a layer of magnesium-containing octahedrons, forming a "sandwich" structure of silicate skeleton, and there is a hydrated magnesium ion layer between the skeletons.
- the vermiculite powder with a particle size of 200-400 mesh has high ion exchangeability, water absorption, plasticity and viscosity, etc., and is convenient for fertilizer Formed into balls and granulated; applied to the soil to retain moisture and fertilizer nutrients.
- Bentonite uses montmorillonite as its main mineral component. Its structure is a 2:1 crystal structure composed of two silicon-oxygen tetrahedrons sandwiching a layer of aluminum-oxygen octahedron.
- the main chemical components are silica, aluminum oxide and water. , has strong hygroscopicity and swelling properties, can be dispersed into gelatinous and suspended forms in water media, and has certain viscosity, thixotropy and lubricity, which facilitates the pelletizing and granulation of fertilizers. Because there are certain cations in the layered structure formed by the montmorillonite unit cells, they are easily exchanged by other cations and have good ion exchange properties. Applied to the soil it has the effect of retaining moisture and fertilizer nutrients.
- vermiculite powder, bentonite and chemical fertilizer raw materials are compounded, and then transported to a drum granulator.
- saturated steam is introduced for granulation, thereby obtaining a compound fertilizer with strong water absorption and water retention properties, long-term fertilizer effect, small bulk density and good air permeability. Good, low material cost, easy to promote and use.
- the compound fertilizer includes chemical fertilizer raw materials, fillers and synergists; the chemical fertilizer raw materials include urea (containing 46% N), monoammonium phosphate (containing 11% N, P 2 O 5 44 %), potassium chloride (containing 60% K 2 O), the filler is bentonite, and the synergist is vermiculite powder.
- the components by weight are:
- Fertilizer the mass percentage ratio of nitrogen, phosphorus and potassium is 15:15:15. It is a nutrient-balanced compound fertilizer suitable for a variety of crops and has the function of retaining water and fertilizer.
- the compound fertilizer includes chemical fertilizer raw materials, fillers and synergists; the chemical fertilizer raw materials include urea (containing 46% N), monoammonium phosphate (containing 11% N, P 2 O 5 44 %), potassium chloride (containing 60% K 2 O), the filler is bentonite, and the synergist is vermiculite powder.
- the components by weight are:
- the screened semi-finished products are transported to the rotary cooler and cooled by natural or forced cold air.
- the large particles are crushed by the pulverizer and returned to the drum granulator to continue granulation; a compound with the function of retaining water and fertilizer is obtained.
- the fertilizer has a mass percentage ratio of nitrogen, phosphorus and potassium of 26:8:6. It is a high-nitrogen compound fertilizer suitable for nitrogen-loving crops (such as corn) and has the function of retaining water and fertilizer.
- the fertilizers of the embodiments of the present invention and ordinary commercially available fertilizers were subjected to indoor pot experiments and outdoor field tests.
- the pot experiment was conducted indoors in Jinan, Shandong province in June 2021. Set up 3 treatments, namely CK treatment (no fertilization) and control. JP treatment (common commercially available compound fertilizer 40kg/mu, nutrient content 26-8-6), XP treatment (compound fertilizer with water and fertilizer retention function in Example 2 of the present invention 40kg/mu). Set up 3 repetitions for a total of 9 pots.
- the test pots are ceramic pots with a diameter of 20cm and a height of 25cm. Each pot is filled with 13kg of air-dried soil. When filling the soil, add the corresponding fertilizer according to the treatment design and mix it evenly, then compact it lightly, and water 1L per pot. Except for fertilizer application, other treatments were the same. Soil moisture content was measured on the 7th, 14th, 21st and 28th days after watering. The result is as follows:
- the field trial was conducted in Wangchengzhan Village, Hujia Street, Leling City, Shandong province from June to October 2021.
- the area has a warm temperate semi-humid continental monsoon climate with four distinct seasons, an average annual temperature of 12.4°C, and an average annual precipitation of 527.1 mm.
- the soil type of the test plot is fluvo-aquic soil, with organic matter content in the cultivated layer of 11.4g/kg, available nitrogen 58.7mg/kg, available phosphorus 18.2mg/kg, and available potassium 116.1mg/kg.
- the previous crop was wheat, the test crop was corn, and the variety was Denghai 605.
- the experiment adopted a randomized block design and set up three treatments, namely the CK treatment (no fertilization) and the control.
- JP treatment common commercially available compound fertilizer 40kg/mu, nutrient content 26-8-6
- XP treatment compound fertilizer with water and fertilizer retention function in the embodiment of the present invention 40kg/mu, nutrient content 26-8-6
- the area of the community is 40m 2 .
- the experiment was sown on June 12.
- the sowing row spacing was 70cm and the plant spacing was 25cm.
- the fertilizers were applied at one time and no top dressing was performed later. Except for fertilizer application, other management measures were the same.
- the corn was mature and harvested on October 2, and the yield and yield component indicators were examined. The results are as follows:
- Table 2 Number of rows of corn ears, number of kernels in rows, thousand-kernel weight and yield of different treatments
- the application of the compound fertilizer with the function of retaining water and fertilizer according to the embodiment of the present invention significantly increased the corn yield, and compared with the ordinary compound fertilizer with the same nutrient input, the yield increased by 5.4%.
- the compound fertilizer with the function of retaining water and fertilizer improves the utilization efficiency of water and fertilizer nutrients, coordinates the relationship between the components of corn yield, and increases corn yield.
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Abstract
本发明涉及一种具有保水保肥功能的复合肥料的制备方法，该复合肥料包括化肥原料、填充料和增效剂，所述的增效剂为粒径200-400目的蛭石粉，占复合肥料重量比例为5-10％，填充料为膨润土；本发明采用蛭石粉、膨润土与化肥原料复配后，输送至转鼓造粒机中，同时通入饱和蒸汽进行造粒，得到吸水保水性能强，肥效长久的复合肥料，并且容重小、透气性好、材料成本低，易推广和使用。
Description
本发明涉及一种具有保水保肥功能的复合肥料的制备方法，属于肥料技术领域。
化肥是农业生产中重要的物质投入之一，根据联合国粮农组织(FAO)统计，化肥在对农作物增产的贡献占到一半以上。化肥的施用对于保障农产品有效供给起着举足轻重的作用。我国人口多，耕地面积相对缺乏，必须依靠提高单位面积的产量和效率来保障粮食安全，施用化肥在过去、现在和将来都是最有效的农产品增产措施之一。由于化肥容易分解流失，不能及时被作物吸收利用，利用率低，如何降低肥料养分流失，提高肥料利用率成为当前亟需解决的问题。同时我国面临着严重的水资源问题，水资源的时空分布极不均衡，水资源极为短缺，如何使有限的水资源得到最经济、最合理的利用，提高农业用水效率，亦成为当前农业生产中需要迫切解决的问题。
具有保水保肥功能的肥料是解决水资源利用率低和肥料利用率低问题的一个有效途径。目前多是采用高分子树脂等有机化合物作为保水或保肥剂添加到肥料中来实现保水保肥功能，生产工艺相对较为复杂，稳定性较差，大大增加肥料的生产成本，很大程度上限制了生产中的应用。中国专利文献CN 104098381A公开了一种保水增产缓释复合肥料，该肥料由以下重量份的原料制成：1250-2000目硅藻土10-15、氯化钙5-6、硼酸钠4-5、柠檬酸钾18-20、尿素23-25、磷酸二铵20-25、农作物下脚料发酵液15-18、禽畜血浆4-5、醋糟10-12、鸡蛋壳粉1-3、猪殃殃2-3、川楝子粉1-2、大豆肽粉2-3、蚯蚓粪便6-8、干玉米穗4-5、对羟基苯甲酸甲酯钠1-2、交联聚乙烯吡咯烷酮10-12、甲基丙烯酸甲酯3-4、丙烯酸丁酯4-5、十二烷基苯磺酸钠1-2、过硫酸铵0.1-0.2、麦饭石粉2-4、聚硅酸硫酸铁6-8、助剂4-5，该发明制备的复合肥利用硅藻土和缓释包膜剂对养分形成双重包覆，养分不易流失，肥效更为持久，兼具保水抗旱能力，能满足作物各阶段生长所需营养，且不破坏土壤生态环境。中国专利文献CN101113119A公开了一种保水肥料及其制备方法，所述保水肥料由90-99wt％阳离子型高吸水性树脂和1-10wt％螯合态营养液复配制成，高吸水性树脂是阳离子型聚丙烯酸-丙烯酰胺形成共聚物，所述阳离子型高吸水性树脂中，由丙烯酸、丙烯酰胺、阳离子化合物形成共聚物，各单体所占质量百分比分别为丙烯酸5-40wt％，丙烯酰胺5-40wt％，阳离子单体0.01-5wt％，去离子水为余量。该发明在吸水性树脂的制作上引入了一种新的阳离子型单体，提高了保水材料的吸水性。中国专利文献CN103589436A公开了一种土壤保水保肥剂，含以下重量配比的原料：15-35wt％的羧甲基纤维素、35-55wt％的支链淀粉、10-25wt％的沙蒿籽胶和5-20wt％的红糖。该发明引入了羧甲基纤维素(CMC)，具强吸水性，在泥浆中具有长效保湿的稳定性。CN 106045669A公开了一种复合肥及其制备方法，包括化肥和增效剂，所述的增效剂为氨基酸改性的有机基聚硅氧烷乳液。
因此，亟需一种摒弃高分子树脂等有机化合物的保水性能强，肥效长久的复合肥料。
发明内容
针对现有技术的不足，本发明提供一种具有保水保肥功能的复合肥料的制备方法。本发明得到的复合肥料吸水保水性能强，肥效长久。
为实现上述目的，本发明是通过如下技术方案实现的：
一种具有保水保肥功能的复合肥料的制备方法，该复合肥料包括化肥原料、填充料和增效剂，所述的增效剂为粒径200-400目的蛭石粉，占复合肥料重量的5-10％，填充料为膨润土；
具有保水保肥功能的复合肥料的制备方法，包括如下步骤：
1)按照配比称取原料，粉碎，混合均匀后备用；
2)粉状混合物输送至转鼓造粒机中，同时通入饱和蒸汽，提高物料的温度和物料的粘性，增大造粒物料盐类溶解度，实现低水分含量条件下获得满足物料成粒需要的液相数量，降低干燥过程中的热能耗；饱和蒸汽的温度140℃-160℃，压力0.35Mpa-0.6Mpa；
3)造粒初成品输送至回转式烘干机中进行烘干；
4)烘干后的造粒初成品输送至热筛分机中进行分选，细小颗粒直接返回转鼓造粒机中，继续造粒；
5)筛选后的半成品颗粒输送至回转式冷却机中，通过自然冷风或强制冷风冷却，大颗粒经粉碎机粉碎后返回转鼓造粒机中继续参与造粒。
根据本发明优选的，蛭石粉的粒径为200-400目。
进一步优选的，蛭石粉的粒径为300-400目。
根据本发明优选的，增效剂占复合肥料重量的8-10％。
根据本发明优选的，填充料占复合肥料重量的5-20％。
根据本发明优选的，膨润土的粒径为100-200目。
根据本发明优选的，化肥原料为尿素、硫酸铵、氯化铵、磷酸一铵、过磷酸钙、硫酸钾或氯化钾中的一种或两种以上混合。
蛭石是一种板块状天然黏土矿物，由超基性杂岩经热液蚀变及后期风化作用形成，具有可再生特性。蛭石的化学组成大致可以用[Mg3(Si3Al)O10(OH)2][Mg0.5(H2O)y]表示,是一种层状的含镁铝硅酸盐，其基本结构单元由两层硅酸盐(少量铝酸盐)四面体夹着一层含镁八面体组成，形成“三明治”结构的硅酸盐骨架，并在骨架与骨架间存在着水合镁离子层。这些可交换性阳离子和水分子的存在，使其具有很强的离子交换能力，本发明粒径为200-400目的蛭石粉具有很高的离子交换性、吸水性、可塑性及粘性等，便于肥料成球造粒；施用到土壤中具有保持水分和肥料养分的作用。
膨润土以蒙脱石为主要矿物成分，其结构是由两个硅氧四面体夹一层铝氧八面体组成的2:1型晶体结构，主要化学成分是二氧化硅、三氧化二铝和水，具有较强的吸湿性和膨胀性，在水介质中能分散成胶凝状和悬浮状，具有一定的黏滞性、触变性和润滑性，便于肥料成球造粒。由于蒙脱石晶胞形成的层状结构存在某些阳离子，易被其它阳离子交换，具有较好的离子交换性。施用到土壤中具有保持水分和肥料养分的作用。
本发明采用蛭石粉、膨润土与化肥原料复配后，输送至转鼓造粒机中，同时通入饱和蒸汽进行造粒，得到吸水保水性能强，肥效长久的复合肥料，并且容重小、透气性好、材料成本低，易推广和使用。
下面结合实施例来进一步说明本发明。
实施例1：
一种具有保水保肥功能的复合肥料，所述复合肥料包括化肥原料、填充料和增效剂；化肥原料包括尿素(含N 46％)、磷酸一铵(含N11％，P2O544％)、氯化钾(含K2O 60％)，所述填充料为膨润土，所述增效剂为蛭石粉。各组分按重量计分别为：
制备方法，如下步骤：
1)按照配比称取原料，粉碎，混合均匀后备用；
2)粉状混合物输送至转鼓造粒机中，同时通入饱和蒸汽，提高物料的温度和物料的粘性，增大造粒物料盐类溶解度，实现低水分含量条件下获得满足物料成粒需要的液相数量，降低干燥过程中的热能耗；饱和蒸汽的温度150℃，压力0.5Mpa；
3)造粒初成品输送至回转式烘干机中进行烘干；
4)烘干后的造粒初成品输送至热筛分机中进行分选，细小颗粒直接返回转鼓造粒机中，继续造粒；
5)筛选后的半成品颗粒输送至回转式冷却机中，通过自然冷风或强制冷风冷却，大颗粒经粉碎机粉碎后返回转鼓造粒机中继续参与造粒；得到具有保水保肥功能的复合肥料，氮磷钾质量百分含量比例为15:15:15，适合多种作物的养分均衡型具有保水保肥功能的复合肥料。
实施例2：
一种具有保水保肥功能的复合肥料，所述复合肥料包括化肥原料、填充料和增效剂；化肥原料包括尿素(含N 46％)、磷酸一铵(含N11％，P2O544％)、氯化钾(含K2O 60％)，所述填充料为膨润土，所述增效剂为蛭石粉。各组分按重量计分别为：
制备方法，如下步骤：
1)按照配比称取原料，粉碎，混合均匀后备用；
2)粉状混合物输送至转鼓造粒机中，同时通入饱和蒸汽，提高物料的温度和物料的粘性，增大造粒物料盐类溶解度，实现低水分含量条件下获得满足物料成粒需要的液相数量，降低干燥过程中的热能耗；饱和蒸汽的温度160℃，压力0.6Mpa；
3)造粒初成品输送至回转式烘干机中进行烘干；
4)烘干后的造粒初成品输送至热筛分机中进行分选，细小颗粒直接返回转鼓造粒机中，继续造粒；
5)筛选后的半成品颗粒输送至回转式冷却机中，通过自然冷风或强制冷风冷却，大颗粒经粉碎机粉碎后返回转鼓造粒机中继续参与造粒；得到具有保水保肥功能的复合肥料，氮磷钾质量百分含量比例为26:8:6，是适合喜氮作物(比如玉米)的高氮型具有保水保肥功能的复合肥料。
应用实验例：
为验证本发明技术的产品效果，将本发明实施例肥料与普通市售肥料进行了室内盆栽试验和野外田间试验。
盆栽试验于2021年6月在山东济南室内进行。设置3个处理，分别为CK处理(不施肥)，为对照。JP处理(普通市售复合肥40kg/亩，养分含量26-8-6)，XP处理(本发明实施例2具有保水保肥功能的复合肥40kg/亩)。设置3次重复，共9盆。试验盆为直径20cm、高25cm的陶瓷盆，每盆装风干土13kg，装土时按处理设计加入对应的肥料混合均匀，然后轻压实，每盆浇水1L。除肥料施用外，其他处理措施均一致。浇水后第7天、14天、21天、28天测定土壤含水率。结果如下：
表1不同施肥处理土壤含水率变化情况
从结果可以看出，采用本发明技术制备的具有保水保肥功能的复合肥相比普通复
合肥有着明显的保水效果。
田间试验于2021年6-10月在山东省乐陵市胡家街道王程站村进行。该地区属暖温带半湿润大陆性季风气候，四季分明，年平均气温为12.4℃，年平均降水量527.1毫米。试验地块土壤类型为潮土，耕层有机质含量11.4g/kg、速效氮58.7mg/kg、有效磷18.2mg/kg、速效钾116.1mg/kg。前茬作物为小麦，供试作物为玉米，品种为登海605。
试验采用随机区组设计，设置3个处理，分别为CK处理(不施肥)，为对照。JP处理(普通市售复合肥40kg/亩，养分含量26-8-6)，XP处理(本发明实施例具有保水保肥功能的复合肥40kg/亩，养分含量26-8-6)，设置3次重复。小区面积40m2。试验于6月12日播种，播种行距70cm，株距25cm，播种时种肥同播，肥料一次性施入，后期不再追肥，除肥料施用外，其他管理措施均一致。10月2日玉米成熟收获，对产量及产量构成指标进行考查，结果如下：
表2不同处理玉米穗行数、行粒数、千粒重及产量情况
从玉米产量结果看，施用本发明实施例具有保水保肥功能的复合肥处理玉米产量明显提高，相比同等养分投入的普通复合肥增产5.4％。具有保水保肥功能的复合肥提高了水分和肥料养分的利用效率，协调了玉米产量构成因素之间的相互关系，提高了玉米产量。
本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无法对所有的实施方式予以穷举。凡是属于本发明的技术方案所引伸出的显而易见的变化或变动仍处于本发明的保护范围之列。
Claims (7)
- 一种具有保水保肥功能的复合肥料的制备方法，该复合肥料包括化肥原料、填充料和增效剂，所述的增效剂为粒径200-400目的蛭石粉，占复合肥料重量比例为5-10％，填充料为膨润土；具有保水保肥功能的复合肥料的制备方法，包括如下步骤：1)按照配比称取原料，粉碎，混合均匀后备用；2)粉状混合物输送至转鼓造粒机中，同时通入饱和蒸汽，提高物料的温度和物料的粘性，增大造粒物料盐类溶解度，实现低水分含量条件下获得满足物料成粒需要的液相数量，降低干燥过程中的热能耗；饱和蒸汽的温度140℃-160℃，压力0.35Mpa-0.6Mpa；3)造粒初成品输送至回转式烘干机中进行烘干；4)烘干后的造粒初成品输送至热筛分机中进行分选，细小颗粒直接返回转鼓造粒机中，继续造粒；5)筛选后的半成品颗粒输送至回转式冷却机中，通过自然冷风或强制冷风冷却，大颗粒经粉碎机粉碎后返回转鼓造粒机中继续参与造粒。
- 根据权利要求1所述的制备方法，其特征在于，蛭石粉的粒径为200-400目。
- 根据权利要求1所述的制备方法，其特征在于，蛭石粉的粒径为300-400目。
- 根据权利要求1所述的制备方法，其特征在于，增效剂占复合肥料重量比例为8-10％。
- 根据权利要求1所述的制备方法，其特征在于，填充料占复合肥料重量比例为5-20％。
- 根据权利要求1所述的制备方法，其特征在于，膨润土的粒径100-200目。
- 根据权利要求1所述的制备方法，其特征在于，化肥原料为尿素、硫酸铵、氯化铵、磷酸一铵、过磷酸钙、硫酸钾或氯化钾中的一种或两种以上混合。
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| CN1644569A (zh) * | 2004-12-23 | 2005-07-27 | 安徽农业大学 | 一种生态抗旱保水复合肥及其制造方法 |
| CN102503696A (zh) * | 2011-11-10 | 2012-06-20 | 上海化工研究院 | 一种颗粒复混肥料的制备方法 |
| CN104761387A (zh) * | 2015-04-13 | 2015-07-08 | 中国热带农业科学院橡胶研究所 | 一种保水缓释复混肥料及其制备方法 |
| CN105461467A (zh) * | 2016-02-01 | 2016-04-06 | 段长林 | 一种渭北地区春玉米专用肥 |
| CN108314575A (zh) * | 2018-01-15 | 2018-07-24 | 大连亚泰科技新材料股份有限公司 | 一种吸水、保水复合矿物肥料及制备方法 |
| CN114804959A (zh) * | 2022-05-25 | 2022-07-29 | 山东省农业科学院 | 一种具有保水保肥功能的复合肥料的制备方法 |
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| CN106397070A (zh) * | 2016-11-24 | 2017-02-15 | 周岩 | 一种复合型保水缓释肥料及其生产方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1644569A (zh) * | 2004-12-23 | 2005-07-27 | 安徽农业大学 | 一种生态抗旱保水复合肥及其制造方法 |
| CN102503696A (zh) * | 2011-11-10 | 2012-06-20 | 上海化工研究院 | 一种颗粒复混肥料的制备方法 |
| CN104761387A (zh) * | 2015-04-13 | 2015-07-08 | 中国热带农业科学院橡胶研究所 | 一种保水缓释复混肥料及其制备方法 |
| CN105461467A (zh) * | 2016-02-01 | 2016-04-06 | 段长林 | 一种渭北地区春玉米专用肥 |
| CN108314575A (zh) * | 2018-01-15 | 2018-07-24 | 大连亚泰科技新材料股份有限公司 | 一种吸水、保水复合矿物肥料及制备方法 |
| CN114804959A (zh) * | 2022-05-25 | 2022-07-29 | 山东省农业科学院 | 一种具有保水保肥功能的复合肥料的制备方法 |
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