CN1062892A - Method for preparing organic compound fertilizer from molasses fermentation waste liquid - Google Patents
Method for preparing organic compound fertilizer from molasses fermentation waste liquid Download PDFInfo
- Publication number
- CN1062892A CN1062892A CN90110379A CN90110379A CN1062892A CN 1062892 A CN1062892 A CN 1062892A CN 90110379 A CN90110379 A CN 90110379A CN 90110379 A CN90110379 A CN 90110379A CN 1062892 A CN1062892 A CN 1062892A
- Authority
- CN
- China
- Prior art keywords
- waste liquid
- acid
- molasses
- concentration
- add
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 235000013379 molasses Nutrition 0.000 title claims abstract description 17
- 239000003337 fertilizer Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002921 fermentation waste Substances 0.000 title abstract description 4
- 150000002894 organic compounds Chemical class 0.000 title abstract 3
- 239000002699 waste material Substances 0.000 claims abstract description 30
- 239000002253 acid Substances 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 238000004182 chemical digestion Methods 0.000 claims abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 8
- 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
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 239000002367 phosphate rock Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 238000000184 acid digestion Methods 0.000 claims 2
- 240000000111 Saccharum officinarum Species 0.000 claims 1
- 235000007201 Saccharum officinarum Nutrition 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 abstract description 10
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000012141 concentrate Substances 0.000 abstract description 2
- 239000006104 solid solution Substances 0.000 abstract 2
- 239000008187 granular material Substances 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 230000029087 digestion Effects 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000011575 calcium Substances 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011552 falling film Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- MPNNOLHYOHFJKL-UHFFFAOYSA-N peroxyphosphoric acid Chemical compound OOP(O)(O)=O MPNNOLHYOHFJKL-UHFFFAOYSA-N 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
Classifications
-
- 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
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Landscapes
- Fertilizers (AREA)
Abstract
The invention discloses a method for preparing an organic compound fertilizer from molasses fermentation waste liquid, which belongs to the technical field of environmental pollution treatment and is a method for converting high-concentration molasses fermentation waste liquid into the organic compound fertilizer. It is first to evaporate and concentrate the molasses fermented waste liquid, then to add industrial acid whose concentration is 100% and accounts for 2% -10% of the solid solution weight in the concentrated liquid to make chemical digestion at constant temperature for more than 10 hours, then to adjust the content of N, P, K and other components, then to add aggregate whose concentration is 20% -40% of the solid solution weight in the waste liquid, finally to granulate and dry, to make fertilizer.
Description
The invention belongs to the technical field of curbing environmental pollution, is the method that high density molasses fermented waste fluid is become organic composite fertilizer.
At present, the method of handling the molasses fermented waste liquid of discharging in sugar refinery both at home and abroad has following several: 1, directly molasses fermented waste liquid is executed and irritated the farmland, because molasses fermented waste liquid contains abundant organic matter and inorganic elements N, P, K etc., can make agriculture fertilizer, in Zhujiang River sugar refinery, China Guangdong Province, sugar refinery, Zhanjiang, Guangdong, Aug. 1st sugar refinery, Hainan Province all be molasses alcohol waste liquid directly to be executed irritate the farmland, but applying unit need be provided with the supporting uses of facility such as storage pool, transport pipe, force (forcing) pump, and most sugar refinery of China are difficult to promote because of being subjected to the objective condition restriction.2, in the later stage seventies, Japan consonance fermentation industry stock company concentrates the molasses alcohol fermentation waste liquid evaporation, adds then that to account for concentrated solution weight 30%, concentration be 98% sulfuric acid, digested 10 hours down at 110 ℃, be equipped with the production of inorganic commodity compoiste fertilizer that contains N, P, K then.But this method complex process, cost height, also fail to accept use, more be difficult to promote in developing country in other type factory of Japan.
Utilize bio-fermentation process to produce the protein fodder or the recovery energy, but finally still need discharge a large amount of organic waste water, environment is still had pollution, in addition, its economic benefit is also not good, is difficult to be accepted employing by factory.
The object of the invention provides the molasses fermented waste liquid of a kind of processing, and it is become the low sour digestion process of organic composite fertilizer.Solving the problem of environmental pollution that bring because of molasses fermented discharging of waste liquid in sugar refinery, and it is become the needed organic composite fertilizer of agriculture production.
The present invention is achieved in that 1) earlier the molasses fermented waste liquid of being discharged at the bottom of the molasses fermented liquid distillation Tata is delivered to the solid, liquid separator, the lime-ash of removing in the waste liquid to be mingled with.2) will remove and be mingled with cindery waste liquid and send into multiple-effect evaporator and carry out evaporation concentration, making this waste liquid be concentrated into soluble solids concentration is 70%-80%.3) be that to send into temperature be in 100 ℃ the constant temperature digestion device for the waste liquid of 70%-80% with soluble solids concentration, and adding accounts for the contained soluble solids weight of waste liquid 2%-10%'s simultaneously, by concentration is 100% commercial acid (sulfuric acid, hydrochloric acid, nitric acid or phosphoric acid all can), after mixing, carry out the constant temperature chemical digestion more than 10 hours, the organic substance major part of waste liquid is converted into humate.4) Digestive system cooling back that will be above-mentioned is neutralized to PH=6-7 with alkaline matters such as ammonia or lime, and the content of its concentration of sampling analysis and N, P, K.5) adjust the content of compositions such as N, P in the solution, K, make their content reach the requirement of product specification.6) add again account for the contained soluble solids weight of waste liquid 20%-40%, exsiccant, granularity be above normal superphosphate powder or rock phosphate powder or aggregates such as double superhosphate powder or sucrose marrow of 20 orders, makes slurry after mechanical stirring.7) slurry is delivered to tablets press granulation and being dried, made product water content＜5%.
Technology of the present invention is simple, reduce greatly digestion with the acid amount, acid consumption of the present invention only be the digestion of Japanese consonance company with acid measure 1/10, outside the reduction decapacitation of acid consumption reduces production costs, the content of sulfate radical helps using the tolerance of soil to fertilizer in can also corresponding minimizing fertilizer.
Embodiment one: 1, molasses alcohol waste liquid to be processed, volume are 5M
3, specification is: B
x=16, soluble solids 11.5%, organism 8.2%, ash content 3.5%, total N0.5%, K
2O1.3%, P
2O
50.12%, PH=4.
2, the material that add: 1) normal superphosphate [Ca(H
2PO
4)
2], 400 kilograms of weight, specification is: effective P
2O
514-16%, free acid＜4%, water content 3-4%.2) concentration is 98% sulfuric acid [H
2SO
4], 20 kilograms of weight.3) industrial liquefied ammonia [NH
3], 15 kilograms of weight.
3, method for making: molasses alcohol waste liquid directly enters the iris type settling tank at the bottom of the fore-running Tata, through solid-liquid separation sedimentation in 2.5 hours, makes contained suspended substance sedimentation separate (clearance＞80%).Carry out evaporation concentration through centrifugal pumping to falling film type quadruple effect vacuum-evaporator, the material concentration after the evaporation is Bx=85.Molasses alcohol waste liquid after concentrating enters the acidifying groove; and add that to account for concentrated solution weight 2%, concentration be 98% industrial sulphuric acid; the constant temperature digestion groove of delivering to temperature and be 100 ℃ behind uniform mixing carries out digestion in 10 hours; in postdigestive concentrated solution is quantitatively delivered to and agitator; add gas ammonia and be neutralized to PH=6.8-7; and quantitatively adding accounts for concentrated solution weight 40%, granularity is 20 purpose peroxophosphoric acid calcium powders; fully stir into stiff shape slurry again; use the tablets press granulation then; deliver to moisture eliminator and carry out drying, make granular organic composite fertilizer.
4) make quality product: organism 41%, total N3.7%, K
2O6.5%, effectively P
2O
56%, H
2O＜5%, PH=6.5.
Embodiment two: 1, molasses alcohol waste liquid to be processed, volume are 5.5M
3, specification is: Bx=16, soluble solids 11.5%, organism 8.2%, ash content 3.5%, total N0.5%, K
2O1.3%, P
2O
50.12%, PH=4.
2, the material that add: 1) ground phosphate rock [Ca
5F(PO
4)
3], 200 kilograms of weight, specification is: P
2O
5＞32%, moisture content＜1%, granularity is 100 orders.2) concentration is 98% sulfuric acid [H
2SO
4], 100 kilograms of weight.
3, method for making: molasses alcohol waste liquid enters the iris type settling tank from primary tower, through solid-liquid separation sedimentation in 2.5 hours, makes contained suspended substance sedimentation separate (clearance＞80%), carry out evaporation concentration through centrifugal pumping to falling film type triple effect vacuum-evaporator, the material concentration after the evaporation is Bx=85.Molasses alcohol waste liquid after concentrating enters the acidifying groove, add simultaneously that to account for concentrated solution weight 10%, concentration be that to carry out 10 hours, temperature be 100 ℃ constant temperature digestion for 98% industrial sulphuric acid, and then adding accounts for concentrated solution weight 20%, granularity is 100 purpose ground phosphate rock, through fully stirring into stiff shape slurry, send into the revolution chamber of changing into then and solidify.Material after the curing is sent to cutting machine by rotary conveyor, delivers to the slaking of banking up of slaking warehouse after cutting, after about 10 days slaking, carries out granulation with tablets press, and then enters the moisture eliminator drying, makes granular organic composite fertilizer.
4, make quality product: organism 45%, total N2.8%, K
2O7.0%, effectively P
2O
55.5%, H
2O＜5%, PH=6.5.
Embodiment three:
1, molasses msg waste liquid to be processed, volume is 2.5M
3, specification is: Bx=40, soluble solids 25%, organism 15.5%, K
2O1.7%, total N3%, P
2O
50.01%.
2, the material that add: 1) normal superphosphate [Ca(H
2PO
4)
2], 300 kilograms of weight, specification is: effective P
2O
514-16%, free acid＜4%, moisture content 3-4%.2) concentration is 98% sulfuric acid [H
2SO
4], 20 kilograms of weight.3) industrial liquefied ammonia [NH
3], 15 kilograms of weight.
3, method for making: molasses msg separates waste liquid and gives hot device through centrifugal pumping to shell and tube, and waste liquid is given heat to 40 ℃, delivers to falling film type quadruple effect vacuum-evaporator then, carries out evaporation concentration, and the material concentration after the evaporation is Bx=85.Molasses msg waste liquid after concentrating carries out the acidifying groove; add simultaneously that to account for concentrated solution weight 2%, concentration be 98% industrial sulphuric acid; the constant temperature digestion groove of delivering to temperature and be 100 ℃ behind uniform mixing carries out digestion in 10 hours; in postdigestive concentrated solution is delivered to and agitator; add gas ammonia and be neutralized to PH=6.8-7; and quantitatively adding accounts for concentrated solution weight 30%, granularity is 20 purpose normal superphosphate powder; through fully stirring into stiff shape slurry; use tablets press to carry out granulation then; deliver to moisture eliminator again and carry out drying, make granular organic composite fertilizer.
4, make quality product: organism 38.5%, total N8.5%, K
2O4.5%, P
2O
55%, H
2O＜5%, PH=6.5.
Claims (1)
1, a kind of that molasses fermented waste liquid evaporation is concentrated, add acid digestion then, and adjustment N, P, the content of compositions such as K, produce the method for compoiste fertilizer, it is characterized in that: recited abovely add acid digestion, its weight that adds acid is the contained soluble solids weight of concentrated solution 2%-10%, by concentration 100% commercial acid (sulfuric acid, hydrochloric acid, nitric acid or phosphoric acid all can) carry out the constant temperature chemical digestion more than 10 hours, add aggregate (the normal superphosphate powder that accounts for the contained soluble solids weight of molasses fermented waste liquid 20%-40% in addition again, rock phosphate powder, double superhosphate powder or sugarcane marrow all can).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90110379A CN1042726C (en) | 1990-12-30 | 1990-12-30 | Method for producing organic composition fertilizer from fermented waste liquid of sugar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90110379A CN1042726C (en) | 1990-12-30 | 1990-12-30 | Method for producing organic composition fertilizer from fermented waste liquid of sugar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1062892A true CN1062892A (en) | 1992-07-22 |
| CN1042726C CN1042726C (en) | 1999-03-31 |
Family
ID=4881881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90110379A Expired - Fee Related CN1042726C (en) | 1990-12-30 | 1990-12-30 | Method for producing organic composition fertilizer from fermented waste liquid of sugar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1042726C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045584C (en) * | 1993-10-16 | 1999-10-13 | 孙改正 | Efficient organic polybasic compound fertilizer |
| CN1331818C (en) * | 2002-09-04 | 2007-08-15 | 莫志鸿 | Liquid fertilizer made from waste fluid of molasses and alcohol as well as its preparing method |
| CN102503593A (en) * | 2011-10-12 | 2012-06-20 | 广西壮族自治区农业科学院 | Method for preparing dry powder by concentrating molasses alcohol fermentation liquor |
| CN103833425A (en) * | 2014-03-26 | 2014-06-04 | 广西新天德能源有限公司 | Treatment method for hyperosmosis concentrated mash waste liquor |
| CN103980025A (en) * | 2014-03-26 | 2014-08-13 | 广西新天德能源有限公司 | Comprehensive recycling method for high-permeability fermentation waste liquid and sludge |
| CN104016760A (en) * | 2014-05-07 | 2014-09-03 | 广西地源之本肥业有限公司 | Harmless treatment method of molasses fermentation waste liquor |
| CN104016759A (en) * | 2014-05-07 | 2014-09-03 | 广西地源之本肥业有限公司 | Cane molasses fermentation waste liquid recycling method |
| CN104211489A (en) * | 2014-05-07 | 2014-12-17 | 广西地源之本肥业有限公司 | Method for preparing organic/inorganic mixed active composite fertilizer from waste fermentation broth |
| WO2019106190A1 (en) * | 2017-12-01 | 2019-06-06 | Lesaffre Et Compagnie | Compressed solid composition for non-oral use |
| CN110467505A (en) * | 2019-09-12 | 2019-11-19 | 广西金穗生态科技股份有限公司 | Recycle sedimentation method and its device and the method for producing organic fertilizer dry powder |
| CN112898081A (en) * | 2021-03-18 | 2021-06-04 | 江苏徐淮地区淮阴农业科学研究所 | Preparation and use method of rice rooting and seedling strengthening nutrient substance |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317242C (en) * | 2005-12-13 | 2007-05-23 | 魏志刚 | Organic liquid fertilizer and its preparation method |
-
1990
- 1990-12-30 CN CN90110379A patent/CN1042726C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045584C (en) * | 1993-10-16 | 1999-10-13 | 孙改正 | Efficient organic polybasic compound fertilizer |
| CN1331818C (en) * | 2002-09-04 | 2007-08-15 | 莫志鸿 | Liquid fertilizer made from waste fluid of molasses and alcohol as well as its preparing method |
| CN102503593A (en) * | 2011-10-12 | 2012-06-20 | 广西壮族自治区农业科学院 | Method for preparing dry powder by concentrating molasses alcohol fermentation liquor |
| CN102503593B (en) * | 2011-10-12 | 2014-02-05 | 广西壮族自治区农业科学院 | Method for preparing dry powder by concentrating molasses alcohol fermentation liquor |
| CN103833425A (en) * | 2014-03-26 | 2014-06-04 | 广西新天德能源有限公司 | Treatment method for hyperosmosis concentrated mash waste liquor |
| CN103980025A (en) * | 2014-03-26 | 2014-08-13 | 广西新天德能源有限公司 | Comprehensive recycling method for high-permeability fermentation waste liquid and sludge |
| CN103980025B (en) * | 2014-03-26 | 2015-08-26 | 广西新天德能源有限公司 | Height oozes the comprehensive reutilization method of fermented waste fluid and mud |
| CN104211489A (en) * | 2014-05-07 | 2014-12-17 | 广西地源之本肥业有限公司 | Method for preparing organic/inorganic mixed active composite fertilizer from waste fermentation broth |
| CN104016759A (en) * | 2014-05-07 | 2014-09-03 | 广西地源之本肥业有限公司 | Cane molasses fermentation waste liquid recycling method |
| CN104016760A (en) * | 2014-05-07 | 2014-09-03 | 广西地源之本肥业有限公司 | Harmless treatment method of molasses fermentation waste liquor |
| WO2019106190A1 (en) * | 2017-12-01 | 2019-06-06 | Lesaffre Et Compagnie | Compressed solid composition for non-oral use |
| FR3074500A1 (en) * | 2017-12-01 | 2019-06-07 | Lesaffre Et Compagnie | COMPRESSED SOLID COMPOSITION FOR NON-ORAL USE |
| CN110114451A (en) * | 2017-12-01 | 2019-08-09 | 乐斯福公司 | The compacted solid composition of non-oral purposes |
| RU2768832C2 (en) * | 2017-12-01 | 2022-03-24 | Лезафр Э Компани | Pressed solid composition for non-food use |
| CN110114451B (en) * | 2017-12-01 | 2022-04-01 | 乐斯福公司 | Compressed solid composition for non-oral use |
| US11760961B2 (en) | 2017-12-01 | 2023-09-19 | Lesaffre Et Compagnie | Compressed solid composition for non-oral use |
| CN110467505A (en) * | 2019-09-12 | 2019-11-19 | 广西金穗生态科技股份有限公司 | Recycle sedimentation method and its device and the method for producing organic fertilizer dry powder |
| CN112898081A (en) * | 2021-03-18 | 2021-06-04 | 江苏徐淮地区淮阴农业科学研究所 | Preparation and use method of rice rooting and seedling strengthening nutrient substance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1042726C (en) | 1999-03-31 |
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