CN117142899A - Bio-based fertilizer synergist and preparation method thereof - Google Patents
Bio-based fertilizer synergist and preparation method thereof Download PDFInfo
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- CN117142899A CN117142899A CN202311046092.2A CN202311046092A CN117142899A CN 117142899 A CN117142899 A CN 117142899A CN 202311046092 A CN202311046092 A CN 202311046092A CN 117142899 A CN117142899 A CN 117142899A
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- polyglutamic acid
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- polyphosphate
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 229920002643 polyglutamic acid Polymers 0.000 claims abstract description 104
- 108010020346 Polyglutamic Acid Proteins 0.000 claims abstract description 103
- 241000208125 Nicotiana Species 0.000 claims abstract description 44
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 44
- BTCSSZJGUNDROE-UHFFFAOYSA-N gamma-aminobutyric acid Chemical compound NCCCC(O)=O BTCSSZJGUNDROE-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 30
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000010457 zeolite Substances 0.000 claims abstract description 30
- 229920000388 Polyphosphate Polymers 0.000 claims abstract description 26
- 239000001205 polyphosphate Substances 0.000 claims abstract description 26
- 235000011176 polyphosphates Nutrition 0.000 claims abstract description 26
- 239000000440 bentonite Substances 0.000 claims abstract description 24
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 24
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 24
- 150000007524 organic acids Chemical class 0.000 claims abstract description 23
- OGNSCSPNOLGXSM-UHFFFAOYSA-N (+/-)-DABA Natural products NCCC(N)C(O)=O OGNSCSPNOLGXSM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229960003692 gamma aminobutyric acid Drugs 0.000 claims abstract description 16
- 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 claims abstract description 15
- 239000011734 sodium Substances 0.000 claims abstract description 15
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 42
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 28
- WOSNCVAPUOFXEH-UHFFFAOYSA-N thifluzamide Chemical compound S1C(C)=NC(C(F)(F)F)=C1C(=O)NC1=C(Br)C=C(OC(F)(F)F)C=C1Br WOSNCVAPUOFXEH-UHFFFAOYSA-N 0.000 claims description 28
- HTKFORQRBXIQHD-UHFFFAOYSA-N allylthiourea Chemical compound NC(=S)NCC=C HTKFORQRBXIQHD-UHFFFAOYSA-N 0.000 claims description 27
- 229960001748 allylthiourea Drugs 0.000 claims description 26
- 239000003054 catalyst Substances 0.000 claims description 24
- 239000003431 cross linking reagent Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000005406 washing Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 18
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 15
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 14
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 14
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 14
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000005642 Oleic acid Substances 0.000 claims description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 14
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 235000006408 oxalic acid Nutrition 0.000 claims description 14
- 235000013311 vegetables Nutrition 0.000 claims description 14
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 10
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 10
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 10
- 229910021538 borax Inorganic materials 0.000 claims description 9
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 9
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 9
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 9
- 239000004328 sodium tetraborate Substances 0.000 claims description 9
- 239000011573 trace mineral Substances 0.000 claims description 9
- 235000013619 trace mineral Nutrition 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000004108 freeze drying Methods 0.000 claims description 7
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 7
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 7
- 239000004132 Calcium polyphosphate Substances 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 2
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 2
- 239000011609 ammonium molybdate Substances 0.000 claims description 2
- 229940010552 ammonium molybdate Drugs 0.000 claims description 2
- 235000019827 calcium polyphosphate Nutrition 0.000 claims description 2
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 2
- 125000004427 diamine group Chemical group 0.000 claims description 2
- 229910000358 iron sulfate Inorganic materials 0.000 claims description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229960003390 magnesium sulfate Drugs 0.000 claims description 2
- 229940099596 manganese sulfate Drugs 0.000 claims description 2
- 235000007079 manganese sulphate Nutrition 0.000 claims description 2
- 239000011702 manganese sulphate Substances 0.000 claims description 2
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- OQZCJRJRGMMSGK-UHFFFAOYSA-M potassium metaphosphate Chemical compound [K+].[O-]P(=O)=O OQZCJRJRGMMSGK-UHFFFAOYSA-M 0.000 claims description 2
- 235000019828 potassium polyphosphate Nutrition 0.000 claims description 2
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 2
- 229960001763 zinc sulfate Drugs 0.000 claims description 2
- 239000003623 enhancer Substances 0.000 claims 2
- 230000014759 maintenance of location Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 4
- 208000035143 Bacterial infection Diseases 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 20
- 238000012360 testing method Methods 0.000 description 14
- 239000002245 particle Substances 0.000 description 13
- 230000007935 neutral effect Effects 0.000 description 12
- 239000002689 soil Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- 238000011282 treatment Methods 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 240000008042 Zea mays Species 0.000 description 7
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 7
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 7
- 238000003763 carbonization Methods 0.000 description 7
- 235000005822 corn Nutrition 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 7
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 7
- 238000000197 pyrolysis Methods 0.000 description 7
- 238000007873 sieving Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 125000003916 ethylene diamine group Chemical group 0.000 description 6
- 238000005065 mining Methods 0.000 description 6
- 239000007983 Tris buffer Substances 0.000 description 5
- 239000012065 filter cake Substances 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 5
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000012010 growth Effects 0.000 description 4
- 230000003389 potentiating effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000013268 sustained release Methods 0.000 description 2
- 239000012730 sustained-release form Substances 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 208000031888 Mycoses Diseases 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 235000012041 food component Nutrition 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 235000015816 nutrient absorption Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea group Chemical group NC(=S)N UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 238000013316 zoning 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
- C05G3/40—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
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
-
- 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
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- 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 field of fertilizer synergists, in particular to a biological base fertilizer synergist and a preparation method thereof, wherein the fertilizer synergist comprises the following raw materials in parts by weight: 20-30 parts of modified polyglutamic acid, 1-3 parts of tobacco stalk biochar, 4-6 parts of polyphosphate, 30-40 parts of bentonite, 6-10 parts of zeolite powder, 0.1-0.5 part of gamma-aminobutyric acid, 10-20 parts of sodium humate, 10-15 parts of organic acid and 1-3 parts of microelement composition. The fertilizer synergist not only has excellent fertilizer retention capacity, can enhance the slow release property of the fertilizer and remarkably improve the utilization rate of the fertilizer, but also has a certain bactericidal property, can reduce soil-borne bacterial diseases, and is beneficial to improving the yield and quality of crops.
Description
Technical Field
The invention relates to the field of fertilizer synergists, in particular to a biological base fertilizer synergist and a preparation method thereof.
Background
According to the related data, the nitrogen fertilizer utilization rate of China is counted to be about 35%, the current-season utilization rates of phosphate fertilizer and potash fertilizer are respectively about 20% and 50%, and the low fertilizer utilization rate is always a problem in agricultural fertilization of China.
The fertilizer synergist can be used as an active substance to increase nutrient absorption of crops by nitrogen fixation and activation of potassium and phosphorus elements which are difficult to utilize in soil, and can play a certain role in regulating the growth of crops, and the fertilizer synergist is usually doped into a conventional fertilizer, so that the application amount of the fertilizer can be properly reduced, and the utilization rate of the fertilizer can be improved.
The polyglutamic acid fertilizer synergist is a glutamic acid polymer prepared by a biological fermentation technology, has a large molecular weight, has a comb-like structure due to a large number of carboxyl groups on a side chain, and can have the effects of chelating, moisturizing and regulating plant growth. Although polyglutamic acid has excellent characteristics, polyglutamic acid is sensitive to physical, chemical and biological conditions, especially microorganisms are a main factor of degradation of the polyglutamic acid, and the rapid degradation of the polyglutamic acid in soil as a fertilizer synergist influences the long-acting performance of the functions of the polyglutamic acid, so that the polyglutamic acid has the problems of relatively weak fertilizer retaining capacity and insufficient slow release property, and has limited effect on prolonging the release period of fertilizer nutrients, so that the utilization rate of the fertilizer is relatively low.
Therefore, a new fertilizer synergist is developed to improve the utilization rate of the fertilizer, save the input cost of the fertilizer, and has very important significance for agricultural development and ecological environment protection in China.
Disclosure of Invention
Aiming at the technical problems, the invention provides the biological base fertilizer synergist and the preparation method thereof, and the fertilizer synergist not only has excellent fertilizer retaining capacity, can enhance the slow release property of the fertilizer and obviously improve the utilization rate of the fertilizer, but also has a certain bactericidal property, can reduce soil-borne bacterial diseases and is beneficial to improving the yield and quality of crops.
In order to achieve the above purpose, the invention provides a bio-based fertilizer synergist, which comprises the following raw materials in parts by weight: 20-30 parts of modified polyglutamic acid, 1-3 parts of tobacco stalk biochar, 4-6 parts of polyphosphate, 30-40 parts of bentonite, 6-10 parts of zeolite powder, 0.1-0.5 part of gamma-aminobutyric acid, 10-20 parts of sodium humate, 10-15 parts of organic acid and 1-3 parts of microelement composition.
In some embodiments, the modified polyglutamic acid is prepared by the steps of: and dissolving polyglutamic acid in dimethyl sulfoxide, adding allyl thiourea and thifluzamide, adding a cross-linking agent and a catalyst, stirring and mixing, filtering, washing and freeze-drying to obtain the modified polyglutamic acid.
In some embodiments, the polyglutamic acid has a molecular weight of 70-200 kilodaltons.
The source of the polyglutamic acid is not particularly limited and can be commercially available, including but not limited to polyglutamic acid available from the chemical industry-lifting company of the Ji-Wuhan company.
In some embodiments, the weight ratio of dimethyl sulfoxide to polyglutamic acid is (12-14): 1, and the total addition of allylthiourea and thifluzamide is 8-20wt% of the polyglutamic acid.
Preferably, the weight ratio of the dimethyl sulfoxide to the polyglutamic acid is 13:1, and the total addition amount of the allylthiourea and the thifluzamide is 14wt% of the polyglutamic acid.
In some embodiments, the weight ratio of allylthiourea to thifluzamide is (0.6-1): 1.
The CAS number of the allylthiourea is 109-57-9, and the CAS number of the thifluzamide is 130000-40-7.
In some embodiments, the crosslinking agent is added in an amount of 10 to 12wt% of polyglutamic acid and the catalyst is added in an amount of 0.5 to 1.2wt% of polyglutamic acid.
Preferably, the crosslinking agent is added in an amount of 11wt% of polyglutamic acid, and the catalyst is added in an amount of 1wt% of polyglutamic acid.
In some embodiments, the crosslinker is a diamine and the catalyst is sodium bicarbonate.
Preferably, the crosslinking agent is ethylenediamine.
In some embodiments, the tobacco stalk biochar is prepared by: crushing tobacco stalks in sequence, sieving the tobacco stalks by a 120-mesh sieve, performing pyrolysis carbonization treatment at 620-680 ℃ to obtain primary biochar, heating the obtained primary biochar to 280-300 ℃ at a speed of 5-7 ℃/min under inert atmosphere, preserving heat for 40-60min, heating the primary biochar to 900-1000 ℃ at a speed of 3-5 ℃/min, preserving heat for 4-6h to obtain secondary biochar, washing the secondary biochar with dilute hydrochloric acid, washing with water, regulating pH to be neutral, and drying to obtain the tobacco stalk biochar.
Preferably, the tobacco stalk biochar is prepared by the following steps: crushing tobacco stalks in sequence, sieving the tobacco stalks by a 120-mesh sieve, performing pyrolysis carbonization treatment at 650 ℃ to obtain primary biochar, heating the obtained primary biochar to 290 ℃ at a speed of 6 ℃/min under an inert atmosphere, preserving heat for 50min, heating the primary biochar to 950 ℃ at a speed of 4 ℃/min, preserving heat for 5h to obtain secondary biochar, washing the secondary biochar by 2mol/L dilute hydrochloric acid for 8min, washing the secondary biochar with water until the pH value is neutral, and drying the secondary biochar at 80 ℃ for 12h to obtain the tobacco stalk biochar.
In some embodiments, the polyphosphate comprises one or more of ammonium polyphosphate, magnesium polyphosphate, sodium polyphosphate, potassium polyphosphate, and calcium polyphosphate.
Preferably, the polyphosphate is ammonium polyphosphate.
The source of the ammonium polyphosphate is not particularly limited and may be commercially available, including but not limited to, ammonium polyphosphate from the company Ji's Xin full chemical technology Co.
In some embodiments, the bentonite has a particle size of 1000-3000 mesh, preferably 2000 mesh.
The source of the bentonite is not particularly limited and can be purchased commercially, including but not limited to, bentonite purchased from the company of Lingyun mining science and technology, inc.
In some embodiments, the zeolite powder has a particle size of 1000-2000 mesh, preferably 1500 mesh.
The source of the zeolite powder is not particularly limited and may be commercially available, including but not limited to, the zeolite powder available from the sun-facing Xinhe zeolite technology Co.
In some embodiments, the organic acid comprises vegetable oleic acid and/or oxalic acid.
Preferably, the organic acid comprises vegetable oleic acid and oxalic acid, and the weight ratio of the vegetable oleic acid to the oxalic acid is (0.2-0.5): 1.
the CAS number of the vegetable oil acid is 112-80-1.
In some embodiments, the trace element composition comprises one or more of copper sulfate, iron sulfate, magnesium sulfate, zinc sulfate, ammonium molybdate, borax, manganese sulfate.
Preferably, the trace element composition is a combination of magnesium sulfate, ferric sulfate and borax, and the weight ratio of each substance is 1: (0.5-1): (0.8-1.2).
More preferably, the trace element composition is a combination of magnesium sulfate, ferric sulfate and borax, and the weight ratio of each substance is 1:0.7:1.
the invention also provides a preparation method of the bio-based fertilizer synergist, which comprises the following steps: sequentially adding modified polyglutamic acid, gamma-aminobutyric acid, microelement composition and organic acid into a reaction kettle, stirring for 10-15min at the rotating speed of 50-100r/min, heating in a water bath to 30-40 ℃, adding sodium humate and polyphosphate, continuously stirring for 10-20min, adding bentonite, zeolite powder and tobacco stalk biochar, stirring and mixing for 30-60min at the rotating speed of 200-400r/min at the temperature of 60-70 ℃, and cooling to below 25 ℃ to obtain the bio-based fertilizer synergist.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, polyglutamic acid is modified, and particularly, the allyl thiourea and the thifluzamide in a specific proportion are used for modifying the polyglutamic acid, so that the prepared synergist has better fertilizer retention capacity and sustained release property, the fertilizer utilization rate is obviously improved, and the synergist has a certain bactericidal property, reduces soil-borne bacterial diseases, is beneficial to the improvement of crop yield and quality, and mainly because the allyl thiourea and the thifluzamide can be bonded to the linear molecular structure of the polyglutamic acid under the action of the crosslinking agent and the catalyst to form a winding or net-shaped structure, the synergist can well lock active ingredients when being used together with the fertilizer, the quick loss of nutrient components is avoided, the fertilizer retention property and the sustained release property are enhanced, the utilization rate is improved, and the thiourea groups and the thifluzamide are introduced to enable the synergist to have better bactericidal property and prevent and treat some fungal diseases, so that the yield of crops is beneficial to the yield increase;
(2) The invention can well prevent and treat diseases in soil by adding the nicotine contained in the specific tobacco stem biochar to inhibit diseases and insects and combining the added polyphosphate to complex gamma-aminobutyric acid; in addition, bentonite and zeolite powder with specific particle sizes can adsorb certain active ingredients in the fertilizer, so that the slow release performance of the fertilizer can be improved.
Drawings
FIG. 1 is a scanning electron microscope image of modified polyglutamic acid in example 1.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, 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.
Example 1
The biological base fertilizer synergist comprises the following raw materials in parts by weight: 25 parts of modified polyglutamic acid, 2 parts of tobacco stalk biochar, 5 parts of polyphosphate, 35 parts of bentonite, 8 parts of zeolite powder, 0.3 part of gamma-aminobutyric acid, 15 parts of sodium humate, 12 parts of organic acid and 2 parts of microelement composition.
The modified polyglutamic acid is prepared by the following steps: and dissolving polyglutamic acid in dimethyl sulfoxide, adding allyl thiourea and thifluzamide, adding a cross-linking agent and a catalyst, stirring and mixing for 20min at the rotating speed of 500r/min, filtering, washing a filter cake to be neutral by using Tris buffer solution and water in sequence, and freeze-drying to obtain the modified polyglutamic acid.
Polyglutamic acid is purchased from Wuhan Ji chemical industry Co., ltd, and has a molecular weight of 70-200 Da.
The weight ratio of dimethyl sulfoxide to polyglutamic acid is 13:1, and the total addition amount of allylthiourea and thifluzamide is 14wt% of the polyglutamic acid.
The weight ratio of allylthiourea to thifluzamide was 0.8:1.
The addition amount of the cross-linking agent is 11wt% of polyglutamic acid, the addition amount of the catalyst is 1wt% of polyglutamic acid, the cross-linking agent is ethylenediamine, and the catalyst is sodium bicarbonate.
The tobacco stalk biochar is prepared by the following steps: crushing tobacco stalks in sequence, sieving the tobacco stalks by a 120-mesh sieve, performing pyrolysis carbonization treatment at 650 ℃ to obtain primary biochar, heating the obtained primary biochar to 290 ℃ at a speed of 6 ℃/min under an inert atmosphere, preserving heat for 50min, heating the primary biochar to 950 ℃ at a speed of 4 ℃/min, preserving heat for 5h to obtain secondary biochar, washing the secondary biochar with 2mol/L dilute hydrochloric acid for 8min, washing the secondary biochar with water until the pH is neutral, and drying the secondary biochar at 80 ℃ for 12h to obtain the tobacco stalk biochar.
The polyphosphate is ammonium polyphosphate, which is purchased from Ji nan Xin full chemical technology Co.
The particle size of bentonite is 2000 mesh, and is purchased from Lingyun mining science and technology Co.
The zeolite powder has a particle size of 1500 mesh and is purchased from Chaoyang Xinhe zeolite technology Co.
The organic acid comprises vegetable oleic acid and oxalic acid, and the weight ratio of the vegetable oleic acid to the oxalic acid is 0.35:1.
the microelement composition is a combination of magnesium sulfate, ferric sulfate and borax, and the weight ratio of each substance is 1:0.7:1.
the preparation method of the bio-based fertilizer synergist comprises the following steps: sequentially adding modified polyglutamic acid, gamma-aminobutyric acid, trace element composition and organic acid into a reaction kettle according to a proportion, stirring for 12min at a rotating speed of 80r/min, heating to 35 ℃ in a water bath, adding sodium humate and polyphosphate, continuously stirring for 15min, adding bentonite, zeolite powder and tobacco stalk biochar, stirring and mixing for 45min at 65 ℃ at a rotating speed of 300r/min, and cooling to below 25 ℃ to obtain the bio-based fertilizer synergist.
Example 2
The biological base fertilizer synergist comprises the following raw materials in parts by weight: 22 parts of modified polyglutamic acid, 2 parts of tobacco stalk biochar, 5 parts of polyphosphate, 32 parts of bentonite, 7 parts of zeolite powder, 0.2 part of gamma-aminobutyric acid, 12 parts of sodium humate, 11 parts of organic acid and 2 parts of microelement composition.
The modified polyglutamic acid is prepared by the following steps: and dissolving polyglutamic acid in dimethyl sulfoxide, adding allyl thiourea and thifluzamide, adding a cross-linking agent and a catalyst, stirring and mixing for 20min at the rotating speed of 500r/min, filtering, washing a filter cake to be neutral by using Tris buffer solution and water in sequence, and freeze-drying to obtain the modified polyglutamic acid.
Polyglutamic acid is purchased from Wuhan Ji chemical industry Co., ltd, and has a molecular weight of 70-200 Da.
The weight ratio of dimethyl sulfoxide to polyglutamic acid is 13:1, and the total addition amount of allylthiourea and thifluzamide is 14wt% of the polyglutamic acid.
The weight ratio of allylthiourea to thifluzamide was 0.75:1.
The addition amount of the cross-linking agent is 11wt% of polyglutamic acid, the addition amount of the catalyst is 1wt% of polyglutamic acid, the cross-linking agent is ethylenediamine, and the catalyst is sodium bicarbonate.
The tobacco stalk biochar is prepared by the following steps: crushing tobacco stalks in sequence, sieving the tobacco stalks by a 120-mesh sieve, performing pyrolysis carbonization treatment at 650 ℃ to obtain primary biochar, heating the obtained primary biochar to 290 ℃ at a speed of 6 ℃/min under an inert atmosphere, preserving heat for 50min, heating the primary biochar to 950 ℃ at a speed of 4 ℃/min, preserving heat for 5h to obtain secondary biochar, washing the secondary biochar by 2mol/L dilute hydrochloric acid for 8min, washing the secondary biochar with water until the pH value is neutral, and drying the secondary biochar at 80 ℃ for 12h to obtain the tobacco stalk biochar.
The polyphosphate is ammonium polyphosphate, which is purchased from Ji nan Xin full chemical technology Co.
The particle size of bentonite is 2000 mesh, and is purchased from Lingyun mining science and technology Co.
The zeolite powder has a particle size of 1500 mesh and is purchased from Chaoyang Xinhe zeolite technology Co.
The organic acid comprises vegetable oleic acid and oxalic acid, and the weight ratio of the vegetable oleic acid to the oxalic acid is 0.35:1.
the microelement composition is a combination of magnesium sulfate, ferric sulfate and borax, and the weight ratio of each substance is 1:0.7:1.
the preparation method of the bio-based fertilizer synergist comprises the following steps: sequentially adding modified polyglutamic acid, gamma-aminobutyric acid, trace element composition and organic acid into a reaction kettle according to a proportion, stirring for 15min at a rotating speed of 60r/min, heating to 35 ℃ in a water bath, adding sodium humate and polyphosphate, continuously stirring for 15min, adding bentonite, zeolite powder and tobacco stalk biochar, stirring and mixing for 50min at 65 ℃ at a rotating speed of 250r/min, and cooling to below 25 ℃ to obtain the bio-based fertilizer synergist.
Example 3
The biological base fertilizer synergist comprises the following raw materials in parts by weight: 28 parts of modified polyglutamic acid, 3 parts of tobacco stem biochar, 5 parts of polyphosphate, 38 parts of bentonite, 9 parts of zeolite powder, 0.4 part of gamma-aminobutyric acid, 18 parts of sodium humate, 14 parts of organic acid and 2 parts of microelement composition.
The modified polyglutamic acid is prepared by the following steps: and dissolving polyglutamic acid in dimethyl sulfoxide, adding allyl thiourea and thifluzamide, adding a cross-linking agent and a catalyst, stirring and mixing for 20min at the rotating speed of 500r/min, filtering, washing a filter cake to be neutral by using Tris buffer solution and water in sequence, and freeze-drying to obtain the modified polyglutamic acid.
Polyglutamic acid is purchased from Wuhan Ji chemical industry Co., ltd, and has a molecular weight of 70-200 Da.
The weight ratio of dimethyl sulfoxide to polyglutamic acid is 13:1, and the total addition amount of allylthiourea and thifluzamide is 14wt% of the polyglutamic acid.
The weight ratio of allylthiourea to thifluzamide was 0.95:1.
The addition amount of the cross-linking agent is 11wt% of polyglutamic acid, the addition amount of the catalyst is 1wt% of polyglutamic acid, the cross-linking agent is ethylenediamine, and the catalyst is sodium bicarbonate.
The tobacco stalk biochar is prepared by the following steps: crushing tobacco stalks in sequence, sieving the tobacco stalks by a 120-mesh sieve, performing pyrolysis carbonization treatment at 650 ℃ to obtain primary biochar, heating the obtained primary biochar to 290 ℃ at a speed of 6 ℃/min under an inert atmosphere, preserving heat for 50min, heating the primary biochar to 950 ℃ at a speed of 4 ℃/min, preserving heat for 5h to obtain secondary biochar, washing the secondary biochar with 2mol/L dilute hydrochloric acid for 8min, washing the secondary biochar with water until the pH is neutral, and drying the secondary biochar at 80 ℃ for 12h to obtain the tobacco stalk biochar.
The polyphosphate is ammonium polyphosphate, which is purchased from Ji nan Xin full chemical technology Co.
The particle size of bentonite is 2000 mesh, and is purchased from Lingyun mining science and technology Co.
The zeolite powder has a particle size of 1500 mesh and is purchased from Chaoyang Xinhe zeolite technology Co.
The organic acid comprises vegetable oleic acid and oxalic acid, and the weight ratio of the vegetable oleic acid to the oxalic acid is 0.35:1.
the microelement composition is a combination of magnesium sulfate, ferric sulfate and borax, and the weight ratio of each substance is 1:0.7:1.
the preparation method of the bio-based fertilizer synergist comprises the following steps: sequentially adding modified polyglutamic acid, gamma-aminobutyric acid, trace element composition and organic acid into a reaction kettle according to a proportion, stirring for 11min at a rotating speed of 90r/min, heating to 38 ℃ in a water bath, adding sodium humate and polyphosphate, continuously stirring for 12min, adding bentonite, zeolite powder and tobacco stalk biochar, stirring and mixing for 40min at 65 ℃ at a rotating speed of 350r/min, and cooling to below 25 ℃ to obtain the bio-based fertilizer synergist.
Example 4
The biological base fertilizer synergist comprises the following raw materials in parts by weight: 20 parts of modified polyglutamic acid, 1 part of tobacco stalk biochar, 4 parts of polyphosphate, 30 parts of bentonite, 10 parts of zeolite powder, 0.1 part of gamma-aminobutyric acid, 20 parts of sodium humate, 15 parts of organic acid and 3 parts of microelement composition.
The modified polyglutamic acid is prepared by the following steps: and dissolving polyglutamic acid in dimethyl sulfoxide, adding allyl thiourea and thifluzamide, adding a cross-linking agent and a catalyst, stirring and mixing for 20min at the rotating speed of 500r/min, filtering, washing a filter cake to be neutral by using Tris buffer solution and water in sequence, and freeze-drying to obtain the modified polyglutamic acid.
Polyglutamic acid is purchased from Wuhan Ji chemical industry Co., ltd, and has a molecular weight of 70-200 Da.
The weight ratio of dimethyl sulfoxide to polyglutamic acid is 12:1, and the total addition amount of allylthiourea and thifluzamide is 8wt% of the polyglutamic acid.
The weight ratio of allylthiourea to thifluzamide was 0.6:1.
The addition amount of the cross-linking agent is 10wt% of polyglutamic acid, the addition amount of the catalyst is 0.5wt% of polyglutamic acid, the cross-linking agent is ethylenediamine, and the catalyst is sodium bicarbonate.
The tobacco stalk biochar is prepared by the following steps: crushing tobacco stalks in sequence, sieving the tobacco stalks by a 120-mesh sieve, performing pyrolysis carbonization treatment at 620 ℃ to obtain primary biochar, heating the obtained primary biochar to 280 ℃ at a speed of 5 ℃/min under an inert atmosphere, preserving heat for 60min, heating the primary biochar to 900 ℃ at a speed of 3 ℃/min, preserving heat for 6h to obtain secondary biochar, washing the secondary biochar with 2mol/L dilute hydrochloric acid for 8min, washing the secondary biochar with water until the pH value is neutral, and drying the secondary biochar at 80 ℃ for 12h to obtain the tobacco stalk biochar.
The polyphosphate is ammonium polyphosphate, which is purchased from Ji nan Xin full chemical technology Co.
The particle size of bentonite is 2000 mesh, and is purchased from Lingyun mining science and technology Co.
The zeolite powder has a particle size of 1500 mesh and is purchased from Chaoyang Xinhe zeolite technology Co.
The organic acid comprises vegetable oleic acid and oxalic acid, and the weight ratio of the vegetable oleic acid to the oxalic acid is 0.35:1.
the microelement composition is a combination of magnesium sulfate, ferric sulfate and borax, and the weight ratio of each substance is 1:0.7:1.
the preparation method of the bio-based fertilizer synergist comprises the following steps: sequentially adding modified polyglutamic acid, gamma-aminobutyric acid, trace element composition and organic acid into a reaction kettle according to a proportion, stirring for 15min at a rotating speed of 50r/min, heating to 30 ℃ in a water bath, adding sodium humate and polyphosphate, continuously stirring for 20min, adding bentonite, zeolite powder and tobacco stalk biochar, stirring and mixing at a rotating speed of 200r/min at 60 ℃ for 60min, and cooling to below 25 ℃ to obtain the bio-based fertilizer synergist.
Example 5
The biological base fertilizer synergist comprises the following raw materials in parts by weight: 30 parts of modified polyglutamic acid, 3 parts of tobacco stem biochar, 6 parts of polyphosphate, 40 parts of bentonite, 10 parts of zeolite powder, 0.5 part of gamma-aminobutyric acid, 20 parts of sodium humate, 15 parts of organic acid and 3 parts of microelement composition.
The modified polyglutamic acid is prepared by the following steps: and dissolving polyglutamic acid in dimethyl sulfoxide, adding allyl thiourea and thifluzamide, adding a cross-linking agent and a catalyst, stirring and mixing for 20min at the rotating speed of 500r/min, filtering, washing a filter cake to be neutral by using Tris buffer solution and water in sequence, and freeze-drying to obtain the modified polyglutamic acid.
Polyglutamic acid is purchased from Wuhan Ji chemical industry Co., ltd, and has a molecular weight of 70-200 Da.
The weight ratio of dimethyl sulfoxide to polyglutamic acid is 14:1, and the total addition amount of allylthiourea and thifluzamide is 20wt% of the polyglutamic acid.
The weight ratio of the allylthiourea to the thifluzamide is 1:1.
The addition amount of the cross-linking agent is 12wt% of polyglutamic acid, the addition amount of the catalyst is 1.2wt% of polyglutamic acid, the cross-linking agent is ethylenediamine, and the catalyst is sodium bicarbonate.
The tobacco stalk biochar is prepared by the following steps: crushing tobacco stalks in sequence, sieving the tobacco stalks by a 120-mesh sieve, performing pyrolysis carbonization treatment at 680 ℃ to obtain primary biochar, heating the obtained primary biochar to 300 ℃ at a speed of 7 ℃/min under an inert atmosphere, preserving heat for 40min, heating the primary biochar to 1000 ℃ at a speed of 5 ℃/min, preserving heat for 4h to obtain secondary biochar, washing the secondary biochar with 2mol/L dilute hydrochloric acid for 8min, washing the secondary biochar with water until the pH is neutral, and drying the secondary biochar at 80 ℃ for 12h to obtain the tobacco stalk biochar.
The polyphosphate is ammonium polyphosphate, which is purchased from Ji nan Xin full chemical technology Co.
The particle size of bentonite is 2000 mesh, and is purchased from Lingyun mining science and technology Co.
The zeolite powder has a particle size of 1500 mesh and is purchased from Chaoyang Xinhe zeolite technology Co.
The organic acid comprises vegetable oleic acid and oxalic acid, and the weight ratio of the vegetable oleic acid to the oxalic acid is 0.35:1.
the microelement composition is a combination of magnesium sulfate, ferric sulfate and borax, and the weight ratio of each substance is 1:0.7:1.
the preparation method of the bio-based fertilizer synergist comprises the following steps: sequentially adding modified polyglutamic acid, gamma-aminobutyric acid, trace element composition and organic acid into a reaction kettle according to a proportion, stirring for 10min at a rotating speed of 100r/min, heating to 40 ℃ in a water bath, adding sodium humate and polyphosphate, continuously stirring for 10min, adding bentonite, zeolite powder and tobacco stalk biochar, stirring and mixing for 30min at a rotating speed of 400r/min at 70 ℃, and cooling to below 25 ℃ to obtain the bio-based fertilizer synergist.
Examples6
The embodiment provides a bio-based fertilizer synergist and a preparation method thereof, and the specific embodiment is the same as the embodiment 1, except that the modified polyglutamic acid is replaced by polyglutamic acid.
Example 7
The embodiment provides a bio-based fertilizer synergist and a preparation method thereof, and the specific embodiment is the same as the embodiment 1, wherein the addition amount of the cross-linking agent is 8wt% of polyglutamic acid, and the addition amount of the catalyst is 0.3wt% of polyglutamic acid
Evaluation of Using Effect
1. Microstructure of microstructure
The microstructure of the modified polyglutamic acid of example 1 was observed by a scanning electron microscope, as shown in FIG. 1.
As can be seen from the graph 1, the modified polyglutamic acid has an obvious reticular staggered structure, and further proves that the allylthiourea and the thifluzamide are bonded to the linear molecular structure of the polyglutamic acid to form a reticular structure, so that the synergist can well lock the effective components when being used together with the fertilizer, avoid the rapid loss of the nutritional components, enhance the fertilizer retention property and the slow release property, and improve the utilization rate.
2. Degradation properties
2g of each of the modified polyglutamic acid of example 1 and the polyglutamic acid of example 6 was dissolved in 200ml of tap water, and tap water was added thereto at 20 to 25℃every 5 days to ensure that the volume of the solutions of each group was unchanged, and centrifugal observation was carried out every day to record whether centrifugal precipitation was generated. If yes, the degradation is indicated, and the centrifugal observation is stopped; if not, continuing to observe and record until centrifugal sedimentation occurs.
From the inventors' record of the results, it was found that: centrifugal precipitation of the modified polyglutamic acid occurs on day 45, which shows that the degradation rate of the modified polyglutamic acid by microorganisms in tap water is slower, and the modified polyglutamic acid can be beneficial to improving the fertilizer retention and the slow release; however, the polyglutamic acid used in example 6 showed significant centrifugal precipitation on day 7, indicating that the rate of degradation by microorganisms was relatively high and the fertilizer retention capacity was relatively poor.
3. Crop quality
An agricultural science and technology demonstration garden in Anhui province is selected as a test area, the soil type is brown soil, and the soil conditions are shown in table 1.
TABLE 1
| pH | 6.4 |
| Organic matter | 16.3g/kg |
| Quick-acting phosphorus | 28.8mg/kg |
| Quick-acting potassium | 133.2mg/kg |
| Alkaline hydrolysis of nitrogen | 87.5mg/kg |
| Total nitrogen | 0.82g/kg |
Test crops and varieties: corn.
Test sample: fertilizer synergists prepared in examples 1-7.
Fertilizer used in the test: the compound fertilizer for the schdanli cards comprises the following components in percentage by weight: n25%, P 2 O 5 10％、K 2 O16％。
Test treatment: using a zoning test, each zone had an area of 48m 2 A control group (applying compound fertilizer only, noApplication of fertilizer synergist), 8 total treatments of examples 1-7 (application of compound fertilizer and fertilizer synergist simultaneously to other areas except the control group), 3 parallel tests were set up for each group. The test areas are rectangular, protection rows are arranged around the test areas, the fertilizing amount of each area is 4.2kg, the fertilizing amount of all fertilizer bases is 60%, and the fertilizing amount is 40% in a large bell mouth period; the fertilizer synergist of each area is used for 0.7kg, and is mixed with the base fertilizer before corn sowing and then simultaneously applied into soil.
Experiments were sown at day 13 of 6 of 2022 and harvested at day 10 of 2022.
The field management is carried out according to the local habit.
And (3) measuring indexes: after corn ripening, relevant index tests were performed, and the test results are shown in table 2.
TABLE 2
4. Soil detection
After 3 months of the above test, soil was extracted for each of the test group and the control group, each group was tested 3 times in parallel, and the average value was taken, and the test results were recorded in table 3.
TABLE 3 Table 3
As can be seen from the index data in tables 2 and 3, the application of the fertilizer potentiating agents of examples 1 to 5 has certain difference in improvement of soil properties and corn quality, but compared with the control group, the application of the fertilizer potentiating agent of the invention effectively promotes nutrient retention in soil, so that fertilizer is not easy to run off, the utilization rate of fertilizer is improved, the growth vigor and yield of corn are obviously improved, the potentiating agent of example 6 adopts polyglutamic acid to replace the polyglutamic acid specifically modified in the invention, nutrient loss in soil occurs, the growth vigor and yield of corn are reduced to a certain extent, the crosslinking agent and catalyst dosage in the polyglutamic acid preparation process are changed in example 7, the growth vigor and yield of corn are reduced, and the crosslinking structure formed by polyglutamic acid in the modification process is less and not compact, the fertilizer retaining and slow release capacity of the potentiating agent for fertilizer is weakened, and the nutrient loss is caused, and the utilization rate of fertilizer is reduced.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (10)
1. The bio-based fertilizer synergist is characterized by comprising the following raw materials in parts by weight: 20-30 parts of modified polyglutamic acid, 1-3 parts of tobacco stalk biochar, 4-6 parts of polyphosphate, 30-40 parts of bentonite, 6-10 parts of zeolite powder, 0.1-0.5 part of gamma-aminobutyric acid, 10-20 parts of sodium humate, 10-15 parts of organic acid and 1-3 parts of microelement composition.
2. The bio-based fertilizer synergist of claim 1, wherein the modified polyglutamic acid is prepared by the steps of: and dissolving polyglutamic acid in dimethyl sulfoxide, adding allyl thiourea and thifluzamide, adding a cross-linking agent and a catalyst, stirring and mixing, filtering, washing and freeze-drying to obtain the modified polyglutamic acid.
3. The bio-based fertilizer synergist of claim 2, wherein the polyglutamic acid has a molecular weight of 70-200 kiloda.
4. The bio-based fertilizer synergist of claim 2, wherein the weight ratio of dimethyl sulfoxide to polyglutamic acid is (12-14) 1, and the total addition amount of allylthiourea and thifluzamide is 5-20wt% of the polyglutamic acid.
5. The bio-based fertilizer enhancer of claim 4 wherein the weight ratio of allylthiourea to thifluzamide is (0.6-1): 1.
6. The bio-based fertilizer synergist of claim 2, wherein the cross-linking agent is diamine and the catalyst is sodium bicarbonate.
7. The bio-based fertilizer synergist of claim 1, wherein the polyphosphate comprises one or more of ammonium polyphosphate, magnesium polyphosphate, sodium polyphosphate, potassium polyphosphate, and calcium polyphosphate.
8. A bio-based fertilizer enhancer as claimed in claim 1, wherein the organic acid comprises vegetable oleic acid and/or oxalic acid.
9. The bio-based fertilizer synergist of claim 1, wherein the trace element composition comprises one or more of copper sulfate, iron sulfate, magnesium sulfate, zinc sulfate, ammonium molybdate, borax, and manganese sulfate.
10. A method of preparing a bio-based fertilizer synergist according to any one of claims 1-9, comprising the steps of: sequentially adding modified polyglutamic acid, gamma-aminobutyric acid, microelement composition and organic acid into a reaction kettle, stirring for 10-15min at the rotating speed of 50-100r/min, heating in a water bath to 30-40 ℃, adding sodium humate and polyphosphate, continuously stirring for 10-20min, adding bentonite, zeolite powder and tobacco stalk biochar, stirring and mixing for 30-60min at the rotating speed of 200-400r/min at the temperature of 60-70 ℃, and cooling to below 25 ℃ to obtain the bio-based fertilizer synergist.
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