CN117623826A - Soil conditioner containing polyglutamic acid and preparation method thereof - Google Patents
Soil conditioner containing polyglutamic acid and preparation method thereof Download PDFInfo
- Publication number
- CN117623826A CN117623826A CN202210982270.1A CN202210982270A CN117623826A CN 117623826 A CN117623826 A CN 117623826A CN 202210982270 A CN202210982270 A CN 202210982270A CN 117623826 A CN117623826 A CN 117623826A
- Authority
- CN
- China
- Prior art keywords
- polyglutamic acid
- soil conditioner
- soil
- modifier
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920002643 polyglutamic acid Polymers 0.000 title claims abstract description 132
- 108010020346 Polyglutamic Acid Proteins 0.000 title claims abstract description 131
- 239000003516 soil conditioner Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000002689 soil Substances 0.000 claims abstract description 80
- 239000003607 modifier Substances 0.000 claims abstract description 44
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 230000003750 conditioning effect Effects 0.000 claims abstract description 20
- 238000000855 fermentation Methods 0.000 claims description 30
- 230000004151 fermentation Effects 0.000 claims description 30
- 235000001014 amino acid Nutrition 0.000 claims description 17
- 150000001413 amino acids Chemical class 0.000 claims description 17
- 239000003637 basic solution Substances 0.000 claims description 17
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 claims description 15
- 235000013922 glutamic acid Nutrition 0.000 claims description 15
- 239000004220 glutamic acid Substances 0.000 claims description 15
- 238000005469 granulation Methods 0.000 claims description 14
- 230000003179 granulation Effects 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 13
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 12
- 108010082495 Dietary Plant Proteins Proteins 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
- 239000011859 microparticle Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229920002401 polyacrylamide Polymers 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 6
- 239000001110 calcium chloride Substances 0.000 claims description 6
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 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 5
- 238000000034 method Methods 0.000 claims description 5
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 5
- 229920005614 potassium polyacrylate Polymers 0.000 claims description 5
- 239000002426 superphosphate Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 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 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 4
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 3
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 3
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 3
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 3
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 235000021049 nutrient content Nutrition 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims 4
- 235000005985 organic acids Nutrition 0.000 claims 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 20
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- 229910004298 SiO 2 Inorganic materials 0.000 abstract description 3
- 235000015097 nutrients Nutrition 0.000 description 14
- 238000003756 stirring Methods 0.000 description 13
- 206010016807 Fluid retention Diseases 0.000 description 11
- 239000002253 acid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 239000003337 fertilizer Substances 0.000 description 8
- 230000006870 function Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 7
- 239000003513 alkali Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 5
- 235000013923 monosodium glutamate Nutrition 0.000 description 5
- 239000004223 monosodium glutamate Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 229910001424 calcium ion Inorganic materials 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000013522 chelant Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 108010064851 Plant Proteins Proteins 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000009920 chelation Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000035784 germination Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 235000021118 plant-derived protein Nutrition 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- AOJJSUZBOXZQNB-VTZDEGQISA-N 4'-epidoxorubicin Chemical compound O([C@H]1C[C@@](O)(CC=2C(O)=C3C(=O)C=4C=CC=C(C=4C(=O)C3=C(O)C=21)OC)C(=O)CO)[C@H]1C[C@H](N)[C@@H](O)[C@H](C)O1 AOJJSUZBOXZQNB-VTZDEGQISA-N 0.000 description 1
- ZNTLMJGLDYLUCX-UHFFFAOYSA-N CCON.CCON.OS(O)(=O)=O Chemical compound CCON.CCON.OS(O)(=O)=O ZNTLMJGLDYLUCX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000237502 Ostreidae Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019387 fatty acid methyl ester Nutrition 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000000291 glutamic acid group Chemical group N[C@@H](CCC(O)=O)C(=O)* 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000009335 monocropping Methods 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 108700022290 poly(gamma-glutamic acid) Proteins 0.000 description 1
- 229920001444 polymaleic acid Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229950011392 sorbitan stearate Drugs 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a soil conditioner containing polyglutamic acid and a preparation method thereof, wherein the soil conditioner consists of 88-95% of polyglutamic acid master batch, 0.1-3% of water-retaining agent and 2-11% of modifier by mass percent; the mass percentage of polyglutamic acid in the polyglutamic acid master batch is 2.5-9%, and the modifier is CaO+MgO+SiO 2 The total amount is more than or equal to 10 percent. The water-retaining soil takes polyglutamic acid, a water-retaining agent and an modifier as main components, and is environment-friendlyThe soil conditioner is suitable for soil conditioning of drought water shortage, salinization aggravation and heavy metal pollution, and has wide application prospect.
Description
Technical Field
The invention belongs to the technical field of fertilizer preparation, and particularly relates to a soil conditioner containing polyglutamic acid and a preparation method thereof.
Background
With the increase of cultivation area, continuous cropping, excessive use of chemical fertilizer and the like, the soil problem is aggravated, and the drought and water shortage influence the emergence and germination of seeds, so that the use of the soil conditioner is more and more widespread. At present, the soil conditioner fish-dragons in the market are mixed, lack of standardization, uneven quality and various propaganda effects. Soil conditioners may not be used at any time. But the soil conditioner is reasonably used according to the soil condition, and proper soil conditioner and correct dosage are required to be selected according to different soil types to restore the ecological function of the soil so as to lay a good foundation for the sustainable development of agricultural health.
Polyglutamic acid, also called gamma-PGA, is a water-soluble polyamino acid produced by microbial fermentation of natural organisms, and has the structure that a glutamic acid unit forms an anionic high polymer of peptide bonds through alpha-amino groups and gamma-carboxyl groups, and can be obtained by secondary fermentation of monosodium glutamate fermentation tail liquid. Because of excellent water solubility, super-strong adsorptivity and biodegradability, the water-retaining agent can be used as a water-retaining agent, a heavy metal ion adsorbent, a flocculating agent and a slow release agent. The polyglutamic acid has the function of bidirectionally regulating acid and alkali, and has obvious regulating function on acid and saline-alkali soil when meeting acid and alkali.
The existing registered soil conditioner has 140 kinds (inquiry of rural area officials network), wherein the alkaline soil conditioner of natural ore accounts for most of the soil conditioner for conditioning acid soil, and the main components are CaO and SiO 2 pH is 8-13, and the raw materials comprise oyster shells and the like; in addition, the acid soil conditioner containing organic substances is used for conditioning alkaline soil, and the raw materials mainly comprise monosodium glutamate fermentation tail liquid, animal feathers, amino acid tailings and the like, wherein the pH value is 3-5; the remaining few registered types are soil conditioners suitable for conditioning structural barrier soil such as saline-alkali soil, sandy soil and cohesive soil, and the main raw materials are kitchen waste, volcanic rock-montmorillonite, fatty acid methyl ester sodium sulfonate, polyoxyethylene sorbitan stearate, lauryl alcohol ethoxy ammonium sulfate and the like, and the other extremely specific conditioners suitable for saline-alkali soil in the north are mainly composed of citric acid, polymaleic acid and the like. Which is a kind ofThe soil conditioner related to monosodium glutamate fermentation tail liquid or amino acid fermentation tail liquid has more than 20 kinds, and the pH value of the soil conditioner of the more than 20 kinds is acidic, so that the soil conditioner is used for conditioning saline-alkali soil or alkaline soil, wherein the organic matter content is at least more than or equal to 15%, and the N content is at least more than or equal to 10%.
The registered soil conditioner has single component and narrow application range.
In addition, most of the existing soil conditioners are used by a base fertilizer method of soil turning or ditching backfilling. If the fertilizer is applied to the soil surface by the topdressing method, the following defects exist: 1. dust is easy to generate, and the dust is unfavorable to the leaf surfaces of crops and operators; 2. uneven spreading and hardening phenomenon similar to cement is easily caused by damp, and the effect is affected. Although watering immediately after fertilization can solve the problems of leaf surface and moisture, labor force is increased. In addition, the existing soil conditioner can flow out too much under the impact of rainwater or watering, and the continuous effect cannot be reflected. Importantly, the existing silicate ore soil conditioner is formed by high-temperature calcination and grinding, almost contains no moisture, has the defects in various aspects, and is easy to harden due to hydration reaction after being added with water.
Disclosure of Invention
The invention aims to provide a soil conditioner containing polyglutamic acid and a preparation method thereof for solving the defects in the prior art.
The invention aims at realizing the following technical scheme:
the soil conditioner containing polyglutamic acid consists of 88-95% of polyglutamic acid master batch, 0.1-3% of water-retaining agent and 2-11% of modifier in percentage by mass; the mass percentage of polyglutamic acid in the polyglutamic acid master batch is 2.5-9%; caO+MgO+SiO in the modifier 2 The total amount is more than or equal to 10 percent.
Preferably, the pH of the soil conditioner is 3-5.
Preferably, the polyglutamic acid master batch is one selected from glutamic acid fermentation liquor, fermentation culture liquor containing polyglutamic acid, microparticles or powder containing polyglutamic acid.
Preferably, when the polyglutamic acid master batch is the glutamic acid fermentation broth or the fermentation broth containing polyglutamic acid, the polyglutamic acid accounts for 2.5-5% by mass;
when the polyglutamic acid master batch is the microparticles or the powder containing polyglutamic acid, the mass percentage of the polyglutamic acid is 5-9%.
Preferably, the polyglutamic acid master batch also contains 6 to 12 percent of amino acid, 6 to 15 percent of organic matters and 55 to 80 percent of vegetable proteins; wherein n+p in the polyglutamic acid master batch 2 O 5 +K 2 The total nutrient content of O is 6-12%.
Preferably, the water-retaining agent is one or more selected from disodium ethylenediamine tetraacetate, polyacrylamide, potassium polyacrylate or ammonium polyacrylate.
Preferably, the modifier is one or more selected from silicate, montmorillonite, bentonite, calcium chloride and superphosphate modifier.
The preparation method of the soil conditioner containing polyglutamic acid comprises the following steps:
s1, chelating polyglutamic acid master batch and modifier for 0.5-1 h at 60-80 ℃ to obtain a basic solution containing polyglutamic acid and modifier;
s2, mixing the water-retaining agent with the basic solution to obtain a mixed solution;
s3, dehydrating and granulating the mixed solution at 125-135 ℃ to obtain the soil conditioner.
Preferably, the dehydration and granulation equipment in the step S3 is a fluidized granulation bed.
The application of the soil conditioner containing polyglutamic acid in conditioning acid soil, alkaline soil, salinized soil and hardened soil.
The soil conditioner composition is different from the existing soil conditioner composition, the polyglutamic acid, the water-retaining agent and the modifier are combined for use, and the soil conditioner, the water-retaining agent and the modifier containing the polyglutamic acid have triple improvement factors of water conservation and improvement, have good water-retaining functions, and are suitable for water conservation and water retention of arid and semiarid soil; meanwhile, the soil conditioner can be used for conditioning severely hardened soil, salinized soil and heavy metal polluted soil and restoring soil cultivation, is an environment-friendly water-retaining soil conditioner, is suitable for conditioning soil with drought water shortage, salinization aggravation and heavy metal pollution, and has wide application prospect.
Detailed Description
The soil conditioner containing polyglutamic acid provided by the application comprises 88-95% of polyglutamic acid master batch, 0.1-3% of water-retaining agent and 2-11% of modifier by mass percent; the mass percentage of polyglutamic acid in the polyglutamic acid master batch is 2.5-9%, and the modifier comprises CaO+MgO+SiO 2 The total amount is more than or equal to 10 percent.
Among them, polyglutamic acid is preferably one of a glutamic acid fermentation broth, a fermentation broth containing polyglutamic acid, microparticles or powder containing polyglutamic acid. The promoting effect of polyglutamic acid on crop growth can be divided into three stages. The polyglutamic acid in the first stage acts as a fertilizer and mainly plays a role in slow release of nutrients. Because polyglutamic acid has super-strong water absorption and water retention capacity, a water film formed by polyglutamic acid can firmly wrap fertilizer nutrients, so that the release time of the fertilizer is prolonged, and the loss of the fertilizer nutrients is reduced. The second stage of action is plant, mainly plays the role of plant growth regulation, and can greatly raise photosynthesis efficiency of plant and stress resistance of plant. In the third stage, polyglutamic acid is degraded into monomer glutamic acid, and the monomer glutamic acid is directly absorbed and utilized by plants as amino acid. Polyglutamic acid promotes crop growth through the above triple effect.
The water-retaining agent is preferably one or more selected from disodium ethylenediamine tetraacetate, polyacrylamide, potassium polyacrylate or ammonium polyacrylate; the water-retaining agent is commonly used as an agricultural soil loosening agent and a humectant. The irrigation can avoid soil hardening, improve soil and avoid water and soil loss.
A modifier, preferably one or more selected from silicate, montmorillonite, bentonite, calcium chloride and superphosphate modifier, wherein the silicate modifier has carbon fixation effect, and can improve soil quality, and silicate efflorescence product HCO 3 - The soil is weakly alkaline, so that the soil acidification can be effectively prevented and treated, and calcium, magnesium, silicon, potassium and the like released in the weathering process can supplement important nutrient elements for plant growth, so that the yield and quality of crops are obviously improved. Ca ions generated by weathering contribute to soil CO 2 Is fixed by the fixing device. In addition, silicate weathering also has the positive environmental effects of improving the soil moisture retention capacity, limiting the migration of toxic trace elements, slowing down ocean acidification and the like; after bentonite is applied into soil, moisture absorption and swelling can be realized, the ratio of solid, liquid and gas in the soil can be changed, so that the soil is loose in structure and has the effect of improving physical characteristics of the soil, the soil is enabled to retain water and fix, the natural environment of the soil is not polluted, and the soil conditioner is extremely efficient in drought climate; the main functions of the calcium chloride are as follows: 1. providing trace elements and calcium ions which are essential elements for plants, wherein the calcium ions are related to plant tissue constitution and in-vivo second messengers; 2. related to adversity stress, the stress resistance of crops, such as cold resistance, drought resistance and the like, can be improved; the superphosphate is a phosphate fertilizer directly prepared by decomposing phosphorite with sulfuric acid, can supply elements such as phosphorus, calcium, sulfur and the like to plants, has the effect of improving alkaline soil, and can promote germination, long root, branching, maturing and maturing of plants; the mineral components have good soil improvement effect.
According to the invention, the soil conditioner taking the polyglutamic acid master batch, the water-retaining agent and the modifier as carriers can effectively chelate exchangeable calcium and magnesium ions lacking in soil, can solve the problem that the common soil conditioner contains silicate oxide and has poor permeability, and can improve the nutrition absorption capacity of crops and enhance the continuous improvement effect of the soil conditioner by naturally degrading polyglutamic acid into monomeric amino acid to act on crop roots in the soil.
Meanwhile, the combination of the polyglutamic acid master batch, the water-retaining agent and the modifier can effectively solve the problem that the existing silicate ore type soil conditioner is easy to harden due to hydration reaction after water is added, the soil conditioner has strong water retention capacity, the retained water is in a free state, the water retention function of the soil after the product is applied is improved, the fluidity of the product after water is ensured, the product is free from hardening, the solubility is improved, the application is easy, and the water retention of the product in the soil is also improved.
In summary, the invention is different from the existing soil conditioner composition, and combines polyglutamic acid, a water-retaining agent and an improver, namely, the acid soil conditioner with main raw materials of monosodium glutamate fermentation tail liquid and the alkaline soil conditioner of natural ores with main components in the prior art are combined, and the advantage of polyglutamic acid can be produced by utilizing the monosodium glutamate fermentation tail liquid, and a certain amount of water-retaining factors are added, so that the water-retaining agent not only can fully exert the advantages of polyglutamic acid water retention, absorption and acid-base regulation, but also can strengthen the water retention and soil improvement functions, and can realize the conditioning of drought and water shortage, severe hardened soil, salinized soil and heavy metal contaminated soil, and the bidirectional regulation of acid soil and alkaline soil.
The soil conditioning, water retention and improvement triple improvement factors containing polyglutamic acid, the water retention agent and the soil improvement agent have good water retention function, and are suitable for water conservation and water retention of arid and semiarid soil; meanwhile, the soil conditioner can realize the conditioning of severe hardened soil, salinized soil and heavy metal polluted soil and the bidirectional conditioning of acid soil and alkaline soil, and restore soil cultivation, is an environment-friendly water-retaining soil conditioner, and has wide application prospect.
Preferably, when the polyglutamic acid master batch is a glutamic acid fermentation broth or a fermentation broth containing polyglutamic acid, the mass percentage of polyglutamic acid is 2.5-5%. The polyglutamic acid fermentation culture solution can be culture solution after polyglutamic acid is produced by secondary fermentation such as glutamic acid fermentation tail solution.
When the polyglutamic acid master batch is microparticles or powder containing polyglutamic acid, the polyglutamic acid is concentrated to a certain extent, wherein the mass percentage of the polyglutamic acid is 5-9%.
Preferably, the polyglutamic acid master batch contains 6 to 12 percent of amino acid and 6 to 12 percent of total nutrient (N+P) in percentage by mass besides polyglutamic acid 2 O 5 +K 2 O), 6-15% of organic matter and 55-80% of plant protein, wherein the organic matter does not contain amino acid and plant protein,The amino acid, the total nutrient and the organic matters can provide rich nutrition for soil, and are beneficial to the growth and income increase of crops.
The preparation method of the soil conditioner containing polyglutamic acid comprises the following steps:
s1, chelating polyglutamic acid master batch and modifier at a low temperature of 60-80 ℃ for 0.5-1 h to obtain a basic solution containing polyglutamic acid and modifier; when the polyglutamic acid master batch is glutamic acid fermentation liquid or polyglutamic acid fermentation culture liquid, the polyglutamic acid master batch is directly mixed with the modifier, and when the polyglutamic acid master batch is micro-particles or powder, certain amount of water is added as a solvent;
s2, mixing the water-retaining agent with the base solution to obtain a mixed solution;
s3, dehydrating and granulating at 125-135 ℃ to obtain the soil conditioner.
Because polyglutamic acid is an anionic polymer and is easy to chelate with the modifier to form a stable chelate structure, and then reacts with the water-retaining agent to form a polymerization product, the polymerization time can be shortened by 4-5 times.
Preferably, the dehydration and granulation equipment in the step S3 is a fluidized granulation bed.
Example 1
Adding silicate modifier 4.5% (CaO not less than 18%, mgO not less than 10%, siO) into glutamic acid fermentation broth 95% (wherein the content of polyglutamic acid is 2.5%, total nutrient is 6%, organic matter is 6%, amino acid is 6%, and vegetable protein is 64%) 2 Not less than 16%), chelating at 70deg.C for 1 hr to obtain basic solution containing polyglutamic acid modifier, mixing with 0.5% polyacrylamide in stirring tank, stirring for 10min, introducing the mixed solution into fluidized granulation bed, and dehydrating at 130deg.C to obtain polyglutamic acid soil conditioner with pH of 3.8. It is used for the conditioning of the moderately salinized soil.
Example 2
Adding bentonite modifier 5% (CaO not less than 20%, mgO not less than 4%, siO) into glutamic acid fermentation broth 94% (wherein the content of polyglutamic acid is 3.5%, total nutrient is 6%, organic matter is 7%, amino acid is 6%, vegetable protein is 62%) 2 More than or equal to 24 percent) and chelating for 1h at 70 ℃ in a reaction kettle to obtain a basic solution containing the polyglutamic acid modifier and 1 percent polyacrylic acidPotassium is mixed and stirred for 10min in a stirring tank, and the mixed solution is introduced into a fluidized granulation bed to be dehydrated at 130 ℃ to prepare the polyglutamic acid soil conditioner, wherein the pH value of the polyglutamic acid soil conditioner is 3.5. It is used for conditioning slightly hardened soil.
Example 3
Adding silicate modifier 4.9% (CaO not less than 22%, mgO not less than 8%, siO) into glutamic acid fermentation broth 95% (wherein polyglutamic acid content is 3.5%, total nutrient is 6%, organic matter is 8%, amino acid is 6%, and vegetable protein is 68%) 2 More than or equal to 20 percent), chelating for 1h at 70 ℃ in a reaction kettle to obtain a basic solution containing the polyglutamic acid modifier, mixing and stirring the basic solution with 0.1 percent of ammonium polyacrylate in a stirring tank for 10min, introducing the mixed solution into a fluidized granulation bed, and dehydrating at 130 ℃ to obtain the polyglutamic acid soil conditioner with the pH value of 4.0. It is used for conditioning severely hardened soil.
Example 4
94% of polyglutamic acid particles (6% of polyglutamic acid, 8% of amino acids, 12% of total nutrient (N+P) 2 O 5 +K 2 O) 15% of organic matters and 66% of vegetable proteins are dissolved in water according to the mass ratio of 1:1, 5% of calcium chloride modifier (CaO is more than or equal to 24%) is added, chelation is carried out in a reaction kettle at 70 ℃ for 1h to obtain a basic solution containing the polyglutamic acid modifier, the basic solution and 1% of polyacrylamide are mixed and stirred in a stirring tank for 10min, and the mixed solution is introduced into a fluidized granulation bed to be dehydrated at 135 ℃ to obtain the polyglutamic acid soil conditioner with the pH value of 3.6. It is used for conditioning the heavily salinized soil.
Example 5
95% of polyglutamic acid particles (wherein the polyglutamic acid content is 5.5%, 10% of amino acids and 12% of total nutrient (N+P) 2 O 5 +K 2 O), 10% of organic matters and 70% of vegetable proteins are dissolved in water according to the mass ratio of 1:1, and 3% of superphosphate modifier (CaO is more than or equal to 18%, mgO is more than or equal to 10% and SiO is added 2 Not less than 16%), chelating at 70deg.C for 1 hr to obtain basic solution containing polyglutamic acid modifier, mixing with 2% potassium polyacrylate in stirring tank, stirring for 10min, introducing the mixed solution into fluidized granulation bed, and dehydrating at 130deg.C to obtain polyglutamic acid soil conditioner with pH of 3.9. It is used for the conditioning of the moderately salinized soil.
Example 6
88% of glutamic acid fermentation liquor (wherein the content of polyglutamic acid is 6.5%, the amino acid is 6.5% and the total nutrient (N+P) is 9.8% 2 O 5 +K 2 O), 10% of organic matter and 62% of vegetable protein) are added with 11% of calcium chloride modifier (CaO is more than or equal to 24%), chelation is carried out at 70 ℃ for 1h in a reaction kettle to obtain a basic solution containing the polyglutamic acid modifier, the basic solution and 1% polyacrylamide are mixed and stirred in a stirring tank for 10min, the mixed solution is introduced into a fluidized granulation bed, and the pH value of the polyglutamic acid soil conditioner is 3.4 after dehydration at 125 ℃. It is used for conditioning slightly hardened soil.
Example 7
90% of polyglutamic acid particles (polyglutamic acid content 5.5%, 12% of amino acids, 12% of total nutrient (N+P) 2 O 5 +K 2 O), 15% of organic matters and 55% of vegetable proteins are dissolved in water according to the mass ratio of 1:1, and 9.5% of silicate modifier (CaO is more than or equal to 18%, mgO is more than or equal to 10% and SiO is added 2 Not less than 16%), chelating at 70deg.C for 1 hr to obtain basic solution containing polyglutamic acid modifier, mixing with 0.5% polyacrylamide in stirring tank, stirring for 10min, introducing the mixed solution into fluidized granulation bed, and dehydrating at 130deg.C to obtain polyglutamic acid soil conditioner with pH of 3.7. It is used for conditioning severely hardened soil.
Example 8
96% glutamic acid fermentation broth (polyglutamic acid content 7.5%, 8% amino acids, 8% total nutrient (N+P) 2 O 5 +K 2 O), 12 percent of organic matters and 68 percent of vegetable proteins, and 2.5 percent (CaO is more than or equal to 4 percent, mgO is more than or equal to 8 percent and SiO) of montmorillonite modifier 2 More than or equal to 22 percent), chelating for 1h at 70 ℃ in a reaction kettle to obtain a basic solution containing the polyglutamic acid modifier, mixing and stirring the basic solution with 1.5 percent of potassium polyacrylate in a stirring tank for 10min, introducing the mixed solution into a fluidized granulation bed, and dehydrating at 130 ℃ to obtain the polyglutamic acid soil conditioner with the pH value of 3.5. It is used for severe salinized soil.
The evaluation of the effect of the polyglutamic acid-containing soil conditioner of examples 1 to 8 is shown in Table 1
Evaluation of the Effect of the soil conditioner containing polyglutamic acid of Table 1
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The soil conditioner containing polyglutamic acid is characterized by comprising 88-95% of polyglutamic acid master batch, 0.1-3% of water-retaining agent and 2-11% of modifier by mass percent; the mass percentage of polyglutamic acid in the polyglutamic acid master batch is 2.5-9%; caO+MgO+SiO in the modifier 2 The total amount is more than or equal to 10 percent.
2. The polyglutamic acid-containing soil conditioner of claim 1, wherein the soil conditioner has a pH of 3 to 5.
3. The polyglutamic acid-containing soil conditioner of claim 1, wherein the polyglutamic acid-containing soil conditioner comprises a mixture of a plurality of organic acids,
the polyglutamic acid master batch is one selected from glutamic acid fermentation liquor, fermentation culture liquor containing polyglutamic acid and microparticles or powder containing polyglutamic acid.
4. The polyglutamic acid-containing soil conditioner of claim 3,
when the polyglutamic acid master batch is the glutamic acid fermentation broth or the fermentation broth containing polyglutamic acid, the mass percentage of the polyglutamic acid is 2.5-5%;
when the polyglutamic acid master batch is the microparticles or the powder containing polyglutamic acid, the mass percentage of the polyglutamic acid is 5-9%.
5. The polyglutamic acid-containing soil conditioner of claim 1, wherein the polyglutamic acid-containing soil conditioner comprises a mixture of a plurality of organic acids,
the polyglutamic acid master batch also contains 6-12% of amino acid, 6-15% of organic matters and 55-80% of vegetable proteins; wherein n+p in the polyglutamic acid master batch 2 O 5 +K 2 The total nutrient content of O is 6-12%.
6. The polyglutamic acid-containing soil conditioner of claim 1, wherein the polyglutamic acid-containing soil conditioner comprises a mixture of a plurality of organic acids,
the water-retaining agent is one or more selected from disodium ethylenediamine tetraacetate, polyacrylamide, potassium polyacrylate or ammonium polyacrylate.
7. The polyglutamic acid-containing soil conditioner of claim 1, wherein the polyglutamic acid-containing soil conditioner comprises a mixture of a plurality of organic acids,
the modifier is one or more selected from silicate, montmorillonite, bentonite, calcium chloride and superphosphate modifier.
8. The method for preparing a polyglutamic acid-containing soil conditioner according to any one of claims 1 to 7, comprising the steps of:
s1, chelating polyglutamic acid master batch and modifier for 0.5-1 h at 60-80 ℃ to obtain a basic solution containing polyglutamic acid and modifier;
s2, mixing the water-retaining agent with the basic solution to obtain a mixed solution;
s3, dehydrating and granulating the mixed solution at 125-135 ℃ to obtain the soil conditioner.
9. The method for preparing a polyglutamic acid-containing soil conditioner according to claim 8,
and step S3, the dehydration granulation equipment is a fluidized granulation bed.
10. Use of the polyglutamic acid-containing soil conditioner according to any one of claims 1 to 7 for conditioning acidic soil, alkaline soil, salinized soil, hardened soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210982270.1A CN117623826A (en) | 2022-08-16 | 2022-08-16 | Soil conditioner containing polyglutamic acid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210982270.1A CN117623826A (en) | 2022-08-16 | 2022-08-16 | Soil conditioner containing polyglutamic acid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117623826A true CN117623826A (en) | 2024-03-01 |
Family
ID=90029164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210982270.1A Pending CN117623826A (en) | 2022-08-16 | 2022-08-16 | Soil conditioner containing polyglutamic acid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117623826A (en) |
-
2022
- 2022-08-16 CN CN202210982270.1A patent/CN117623826A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103343011B (en) | A kind of preparation method of soil improvement agent and application | |
| CN106190158A (en) | A kind of soil-repairing agent for administering heavy metal pollution and production method thereof | |
| CN104355927A (en) | Organic fertilizer capable of promoting plant root growth and preparation method of organic fertilizer | |
| CN103030460A (en) | Special liquid rooting fertilizer for vegetables as well as preparation method and application of special liquid rooting fertilizer | |
| CN105461451A (en) | Microbial fermentation water-soluble fertilizer and preparation method thereof | |
| CN105111021A (en) | Special rice fertilizer with both soil improvement and fertilizer efficiency functions for coastal saline soil and preparation method and application of special rice fertilizer | |
| CN104761413A (en) | Alginic acid fertilizer synergist with ammonia volatilization inhibiting effect and preparation method of alginic acid fertilizer synergist | |
| CN107201234A (en) | A kind of inland soda alkaline land modifying agent and application | |
| CN105622258A (en) | Water-soluble fertilizer dedicated for tulip and preparation method thereof | |
| CN105330424A (en) | Organic-carbon long-acting liquid fertilizer | |
| CN106866269A (en) | Polyglutamic acid composite fertilizer, preparation method and applications | |
| CN105622259A (en) | Special humic acid-containing water-soluble fertilizer for Chinese medicinal material pinellia and preparation method thereof | |
| CN110092697A (en) | A kind of preparation method of the acidic soil conditioner containing fulvo acid | |
| CN106083246A (en) | A kind of saline land greening special fertilizer and preparation, application process | |
| CN104892114A (en) | Fertilizer synergist for improving phosphorus absorptive amount of oilseed rape and preparation method thereof | |
| CN104803793B (en) | Biologically active polypeptide prepares hard water resistance Water soluble fertilizer containing humic acid and method and application | |
| CN105523832A (en) | Special slow release water-soluble fertilizer for soybeans, and preparation method thereof | |
| CN106146213A (en) | A kind of salt-soda soil compounds modifying agent and preparation thereof and application process | |
| CN106348882A (en) | Water-soluble fertilizer capable of improving soil and efficacy and preparing method of water-soluble fertilizer | |
| CN116693342A (en) | Preparation method of stable synergistic liquid fertilizer containing polymerized phosphorus and fertilizer | |
| CN117623826A (en) | Soil conditioner containing polyglutamic acid and preparation method thereof | |
| CN104829352A (en) | Silicate bacterium fertilizer capable of promoting crop absorption and preparation method thereof | |
| CN108251124B (en) | Saline-alkali soil conditioner and saline-alkali soil improvement method | |
| CN113046090A (en) | Saline-alkali soil improver as well as preparation method and application method thereof | |
| CN107011047B (en) | A kind of organic water soluble carbon fertilizer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |