CN1229778A - Method for prodn. of functional marine alga fertilizer - Google Patents
Method for prodn. of functional marine alga fertilizer Download PDFInfo
- Publication number
- CN1229778A CN1229778A CN98101040A CN98101040A CN1229778A CN 1229778 A CN1229778 A CN 1229778A CN 98101040 A CN98101040 A CN 98101040A CN 98101040 A CN98101040 A CN 98101040A CN 1229778 A CN1229778 A CN 1229778A
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- marine alga
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/40—Fertilisers incorporated into a matrix
Abstract
A functional seaweed fertilizer in the form of liquid, soluble powder and powder is prepared from brown alga as main raw material, potassium hydroxide as digestive agent working at 70-100 deg.C for transforming the nutritients, trace element and growth regulator contained in brown alga into soluble substance to be sucked by plant, and the fish-hydrolyzed liquid for regulating pH value and increasing nutrients such as amino acids. Its minerals-enriching technology can greatly reduce its production cost. It can serve to provide nutrients to plant, increase resistance of plant to disease and improve soil.
Description
The present invention relates to the production method of marine alga fertilizer, particularly a kind of nutritive ingredient that contains various active component in the brown alga, the preparation method of the functional marine alga fertilizer that integrates nutrition, diseases prevention, expelling parasite, four kinds of functions of volume increase of reinforcement several mineral materials nutritive substance.
In the production technology of existing marine alga fertilizer, wherein digestive pharmaceutical is based on sodium bicarbonate, and too much sodium ion can cause salt damage to plant.
The purpose of patent of the present invention is can cause the problem of salt damage to plant at sodium ion too much in the above-mentioned prior art, and a kind of production method of functional marine alga fertilizer is provided.Adopt this new method, can guarantee that cytokinin Plant hormones regulators,gibberellins class material, algal polysaccharide and nutritive substance in the brown alga obtain more comprehensively extracting, and have activity, with the main body of the formation of the extracting substance in brown alga fertilizer, the technology of strengthening mineral nutrition can reduce cost greatly.This fertilizer has liquid, soluble powder and three kinds of formulations of pulvis, not only can become plant nutrient agent, is viral inhibitors, growth regulator and soil conditioner simultaneously.
The objective of the invention is to be achieved through the following technical solutions:
The first step digestion abstraction reaction:
Raw material is the ocean brown alga, as sea-tangle, sargassun, black wrack etc., after bright algae or dried algae send out through water, adding is that 0.5%～10% potassium hydroxide carries out digestion reaction by total concentration, its consumption determines that according to what and tough and tensile degree of alignic content in the brown alga tissue digestion temperature is 70～100 ℃, and digestion time is 4～6 hours, alginic acid becomes the solubility Potassium polyalginate in digestive process, and all the other nutritive substances and growth regulatory substance are the solubility active condition.
Operation steps is:
1. earlier bright brown alga or water are sent out brown alga and be cut into 10cm
2About piece, drop in the reactor, potassium hydroxide being added water, to be made into concentration be 10%～30% alkali lye again, adds in the reactor in 0.5%～10% ratio of total concentration, mixes and stir, heating then gradually heats up, temperature is controlled at 70～100 ℃, and is comparatively tough and tensile as frond, suitably plus-pressure, digestion time 4～6 hours, cooling.
The second step proteolysis:
Raw material is obtaining property fish or animal/vegetable protein more, press the acid hydrolyzation hydrolysis, hydrolytic reagent is hydrochloric acid or sulfuric acid, concentration is 30%, and adding proportion is 10%～40% of a raw material, and hydrolysis temperature is 90～120 ℃, as raw material be fish need heat 140 ℃ one hour, remove raw meat, reacted altogether 10～12 hours, until the protein complete hydrolysis.
The 3rd step neutralization reaction:
With the neutralizing agent of the above-mentioned second step protein hydrolyzate as the brown alga extracting solution, can increase simultaneously nutritive substances such as amino acid, the reaction concrete steps are: protein hydrolyzate and alginic acid extracting solution is mixed with 1: 5 ratio, this moment, the pH value of mixed liquid was 8～11, it is carried out degreasing filters, when the liquid after the filtration can directly be adjusted pH value for neutrality, can be directly used in plant-spraying was algae essence, also can become the mother liquor of marine alga liquid fertilizer.As make the powdery soil amendment and then need not to filter.
The 4th step was strengthened complex reaction:
Extracting solution after the neutralization reaction is directly carried out the complexing of metallic salt, and need not any complexing agent, under the condition that oligomeric alginic acid exists, can make liquid fertilizer form the complexation equilibrium body, not precipitation.
Concrete steps: get 100～150 parts of extracting solutions after the neutralization reaction, be heated to 70～100 ℃, add the mineral substance metallic salt of strengthening, 2～8 parts in ferrous sulfate one by one, 1～6 part in copper sulfate, 0.2～2 part in zinc sulfate, totally 0.2～2 part of 0.5～2 part of manganous sulfate, ammonium molybdate, borax, 3～15 parts of potassium primary phosphates, be stirred to whole dissolvings, be cooled to naturally after complexing is finished below 50 ℃, add 0.5～1 part of trimethyl-glycine of synergy activator.
The characteristics of strengthening complexing technology are caustic alkali and the above ionizable metal salt formation complex salts of divalence that utilize in the extracting solution, and can not form precipitation with alginic acid, and liquid fertilizer becomes solvable state like this, thereby saved complexing agent, reduced raw materials cost, but prolonged preservation, easily by plant absorbing.
The 5th step was made different dosage form:
1. strengthen the complex reaction postcooling in the 4th step and be cooled to 50 ℃, adding the synergistic agent trimethyl-glycine promptly becomes marine alga fertilizer.
2. the drying of dusting behind the adding weighting agent white carbon black in the liquid marine alga fertilizer is made the soluble solids marine alga fertilizer.
3. the concrete method for making of soil conditioner is: after the neutralization reaction without filtration, pH value is transferred to about 7, get 100～150 parts of extracting solutions, add 3～30 parts of polyacrylamides, 2～20 parts of potassium primary phosphates, 2～10 parts of salts such as ferrous sulfate, copper sulfate, zinc sulfate, manganous sulfate are after mixed under 70～80 ℃ of temperature, drying was pulverized 40 mesh sieves and was got final product.
Advantage of the present invention:
1. this functional marine alga fertilizer abundant raw material, cheapness, technology cost are low, can make nutritive substance and growth regulatory substance in the brown alga be in active condition, are beneficial to plant absorbing.
2. this marine alga fertilizer has three kinds of formulations, can be used for different purposes respectively, and the liquid fertilizer dilution sprays for 500～1000 times, and the soluble powder dilution agent sprays for 800～1500 times, and the powdery soil amendment mixes soil 1%～5% and spreads fertilizer over the fields.
3. being produced on of this marine alga fertilizer liquid fertilizer utilized digestive pharmaceutical potassium hydroxide and alignic essential property on the reinforcing process, can strengthen mineral nutrition under the condition without complexing agent, makes it the complexation equilibrium body that is shaped good, saved raw materials cost.
4. this fertilizer is organic fertilizer, has antivirally simultaneously, and the effect of coordinate plant growth helps sustainable development of agriculture.
Be embodiments of the invention below:
Example 1: bright brown alga or water are sent out 150 kilograms of brown algas, be cut into 10 square centimeters piece, put into reactor, add 100 kilograms of concentration again and be 15% potassium hydroxide solution, stir slowly heating of back, temperature is controlled at 70～90 ℃, digestion time is 4～6 hours, thicker more tough and tensile as frond, the digestion of can pressurizeing makes 250 kilograms of brown alga extracting solutions.
Get 75 kilograms of obtaining property fish more, put into acid-resistant reacting kettle, add concentration and be 25 kilograms in 30% sulfuric acid, after stirring half an hour, be warming up to 110 ℃ gradually, hydrolysis time is 10～12 hours, heated in the end one hour to 140 ℃ and remove raw meat, up to the protein complete hydrolysis.
Get 250 kilograms of brown alga Digestive systems, add 50 kilograms of protein hydrolyzates, carry out neutralization reaction, transferring PH is 8～11.After reaction was finished, cooling thin up to alignic content was 4% o'clock, stirs half an hour, added then and filtered through pressure filter after 10 kilograms of activated carbon and 20 kilograms of potter's clay stir, and can obtain about 350 kilograms of filtered liquids this moment.
Get above-mentioned filtered liquid and be heated to 70～100 ℃, separate and add 10 kilograms of potassium primary phosphates, 7 kilograms in ferrous sulfate, 5 kilograms in copper sulfate, 4 kilograms in zinc sulfate, 2 kilograms of manganous sulfates, 1 kilogram of ammonium molybdate, 5 kilograms of boraxs, add the back temperature be controlled at 70～80 ℃ be stirred to whole dissolvings after, add 3 kilograms of trimethyl-glycines when being cooled to 50 ℃, stirring the back is neutrality with the adjustment pH value, the metering packing can be made into about about 390 kilograms of liquid seaweed fertilizer.
Can about 150 kilograms of soluble powder seaweed fertilizer as sieving after the drying that above-mentioned marine alga liquid fertilizer is directly dusted.
As in getting 700 kilograms of neutralizers, adding 30 kilograms of 40 kilograms of polyacrylamides (adding again after earlier it being dissolved in hot water) potassium primary phosphates, 20 kilograms in ferrous sulfate, 15 kilograms in copper sulfate, 10 kilograms in zinc sulfate, 5 kilograms of manganous sulfates, mixed under 70～80 ℃ of temperature, stirred 2 hours, make it become the viscous material that contains the slow-releasing mineral substance, dry then, pulverized 40 mesh sieves, promptly can be made into the powdery soil amendment, directly spread fertilizer over the fields with soil mixed.
Example 2: can change the obtaining property fish in the example 1 into soya-bean cake or animal proteinum, as the pig hair, all the other conditions are with example 1 more.
Example 3: the ratio that can increase the mineral substance salt in the reinforcement reaction of liquid fertilizer: need to add 10～15 parts of EDTA sodium salt complexing agents, 100 parts of extracting solutions add 12 parts in biphosphate potassium, 6 parts in ferrous sulfate, 2 parts in copper sulfate, 1 part in zinc sulfate, 0.5 part of manganous sulfate, 0.2 part of ammonium molybdate, 0.6 part of sodium tetraborate, 10 parts in auxiliary complex-former urea.
Example 4: the polyacrylamide in the proportioning of powdery soil amendment also can change other hydroscopic high-molecular resin into, and mineral substance can be adjusted the proportioning of interpolation as required, also can add growth regulatory substance.
Claims (9)
1. the production method of a functional marine alga fertilizer is characterized in that: raw material is aided with lower-cost obtaining property fish based on the ocean brown alga more, and its preparation process is as follows:
The first step brown alga is made the brown alga extracting solution through digestion reaction;
The proteolysis reaction of second step; Raw material is obtaining property fish or animal/vegetable protein more, presses the acid hydrolyzation hydrolysis;
The 3rd step neutralization reaction;
The 4th step was strengthened complex reaction;
The 5th step was made different dosage form.
2. the production method of a kind of functional marine alga fertilizer according to claim 1, it is characterized in that: its concrete processing sequence of said digestion reaction is as follows:
Water is sent out brown alga in elder generation or bright brown alga is cut into 10cm
2About piece, drop in the reactor, the diluent concentration of preparation potassium hydroxide is 10%～30%, ratio in the potassium hydroxide of total concentration 0.5%～10% joins in the reactor, the stirring back temperature of heating is raised to 70～100 ℃, as the tough and tensile plus-pressure that then needs of frond, digestion time is 4～6 hours, makes the brown alga extracting solution.
3. the production method of a kind of functional marine alga fertilizer according to claim 1, it is characterized in that: its concrete processing sequence of said neutralization reaction is as follows:
Will obtaining property fish more or other animal/vegetable proteins after acid system is hydrolyzed into amino acid solution, carry out neutralization reaction as the neutralizing agent of brown alga extracting solution, final pH value is 8～11, filtrate for later use is filtered in degreasing.
4. the production method of a kind of functional marine alga fertilizer according to claim 1 is characterized in that: said reinforcement complex reaction, and its concrete processing sequence is as follows:
(1) gets extracting solution after the neutralization reaction, directly heat to 70～100 ℃;
(2) add the mineral nutrition that needs reinforcement one by one, as: ferrous sulfate, copper sulfate, zinc sulfate, manganous sulfate, ammonium molybdate, borax, maintain the temperature at 70～100 ℃, be stirred to whole dissolvings;
5. the production method of a kind of functional marine alga fertilizer according to claim 1, it is characterized in that: it is to strengthen the complex reaction postcooling in the 4th step to be cooled to 50 ℃ that said the 5th step is made different dosage form, and adding the synergistic agent trimethyl-glycine promptly becomes the liquid marine alga fertilizer.
6. a kind of production method of functional marine alga fertilizer according to claim 1 or 5 is characterized in that: add the drying of dusting behind the weighting agent white carbon black and promptly make the soluble solids marine alga fertilizer in the liquid marine alga fertilizer.
7. the production method of a kind of functional marine alga fertilizer according to claim 1, it is characterized in that: it is after the 3rd step neutralization reaction that said the 5th step is made different dosage form, without filtration, get 100～150 parts of extracting solutions, directly add 3～30 parts of polyacrylamides, 2～20 parts of potassium primary phosphates are after mixing under 70～80 ℃ of temperature, and are dry, pulverize, cross 40 mesh sieves, make the powdery soil amendment.
8. according to the production method of claim 1 or 2,3,4,5,7 described a kind of functional marine alga fertilizers, it is characterized in that:
A. the proportioning of brown alga raw material and digestive pharmaceutical is by weight:
100～150 parts of brown algas after bright brown alga or water are sent out
Digestive pharmaceutical is 10 parts to 100 parts of 10～30% potassium hydroxide solutions
B. the hydrolyzed solution of marine fishes is a neutralizing agent in the neutralization reaction, by weight:
100～150 parts of brown alga extracting solutions
20～30 parts of marine fishes hydrolyzed solutions
PH after its neutralization is 8～11;
C. strengthen the each component in the complex reaction, be by weight:
100～150 parts of neutralization back extracting solutions
2～8 parts in ferrous sulfate
1～6 part in copper sulfate
0.2～2 part in zinc sulfate
0.5～2 part of manganous sulfate
0.2～2 part of ammonium molybdate, borax
3～15 parts of potassium primary phosphates
0.5～1 part of synergistic agent trimethyl-glycine
D. the each component of powdery soil amendment is by weight:
After the neutralization reaction without 100～150 parts of filtering extracting solutions
3～30 parts of polyacrylamides
2～20 parts of potassium primary phosphates
2～20 parts of ferrous sulfate, copper sulfate, zinc sulfate, manganous sulfates etc.
9. the production method of a kind of functional marine alga fertilizer according to claim 1 is characterized in that: the inorganic salt of adding, compound can be any one or two or more combination, or add according to the function needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101040A CN1229778A (en) | 1998-03-20 | 1998-03-20 | Method for prodn. of functional marine alga fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101040A CN1229778A (en) | 1998-03-20 | 1998-03-20 | Method for prodn. of functional marine alga fertilizer |
Publications (1)
| Publication Number | Publication Date |
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| CN1229778A true CN1229778A (en) | 1999-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN98101040A Pending CN1229778A (en) | 1998-03-20 | 1998-03-20 | Method for prodn. of functional marine alga fertilizer |
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| CN (1) | CN1229778A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020022364A (en) * | 2000-09-20 | 2002-03-27 | 이정식 | Manufacturing method of the manure made from brown seaweed wastes |
| WO2006031122A1 (en) * | 2004-09-13 | 2006-03-23 | Torfinn Johnsen | Stabilising membrane for water and nutrient |
| CN100581380C (en) * | 2007-08-06 | 2010-01-20 | 江苏省农业科学院 | Method for obtaining free amino acid by the hydrolyzation of water bloom blue algae |
| CN101439995B (en) * | 2008-12-22 | 2010-12-22 | 中国水产科学研究院黄海水产研究所 | Clean production method of seaweed fertilizer |
| US7875083B2 (en) | 2004-09-08 | 2011-01-25 | Einar Sudmann | Prosthetic element |
| CN102211963A (en) * | 2011-02-11 | 2011-10-12 | 北京雷力农用化学有限公司 | Algae sustained-release granular fertilizer, preparation method and application thereof |
| CN102276326A (en) * | 2011-07-04 | 2011-12-14 | 中国农业科学院农业资源与农业区划研究所 | Sargassum organic liquid fertilizer and preparation method thereof |
| CN101696127B (en) * | 2009-10-23 | 2012-01-11 | 李明 | Production process for manufacturing liquid fertilizer by using fish waste |
| CN102344315A (en) * | 2011-07-04 | 2012-02-08 | 中国农业科学院农业资源与农业区划研究所 | Composite microbial seaweed organic liquid fertilizer and preparation method thereof |
| CN101585723B (en) * | 2008-06-20 | 2012-04-11 | 青岛聚大洋海藻工业有限公司 | Method for preparing seaweed biological long-acting fertilizer |
| CN102491840A (en) * | 2011-12-02 | 2012-06-13 | 青岛丰泰海洋生物科技有限公司 | Method for preparing synergistic phosphatic fertilizer |
| CN102503705A (en) * | 2011-11-22 | 2012-06-20 | 史丹利化肥股份有限公司 | Melted pelleting green seaweed compound fertilizer and preparation method thereof |
| FR2983852A1 (en) * | 2011-12-09 | 2013-06-14 | Droff Yves Le | Treating and recovering green algae by exothermic treatment with calcium oxide delayed reaction, comprises pretreating, exothermic treating and/or post treating green algae to obtain organic fertilizer and natural mineral product |
| CN104945107A (en) * | 2015-06-11 | 2015-09-30 | 青岛苏贝尔作物营养有限公司 | Seaweed water-soluble fertilizer and application method thereof |
| CN105218248A (en) * | 2015-10-23 | 2016-01-06 | 青岛聚大洋藻业集团有限公司 | A kind of preparation method of biological and ecological methods to prevent plant disease, pests, and erosion active liquid seaweed fertilizer |
| CN105418251A (en) * | 2015-12-17 | 2016-03-23 | 叶勇 | Anti-caking controlled release fertilizer |
| CN107162690A (en) * | 2017-06-06 | 2017-09-15 | 威海温喜生物科技有限公司 | A kind of preparation method of the tomato special fertilizer containing Fish protein and algal polysaccharides |
| CN110304972A (en) * | 2019-07-03 | 2019-10-08 | 杭州青洋科技有限公司 | Utilize fertilizer and preparation method thereof made of seawater |
| CN110934229A (en) * | 2019-11-08 | 2020-03-31 | 内蒙古锡牧生命科学有限公司 | Ruminant animal nutrition composition and preparation method and application thereof |
| CN112521203A (en) * | 2020-12-26 | 2021-03-19 | 青岛蓝宝海洋生物科技有限公司 | Seaweed fertilizer and preparation method thereof |
-
1998
- 1998-03-20 CN CN98101040A patent/CN1229778A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020022364A (en) * | 2000-09-20 | 2002-03-27 | 이정식 | Manufacturing method of the manure made from brown seaweed wastes |
| US7875083B2 (en) | 2004-09-08 | 2011-01-25 | Einar Sudmann | Prosthetic element |
| CN101068463B (en) * | 2004-09-13 | 2011-10-12 | 托芬·约翰逊 | Products for disposing soil surface and / or soil body |
| WO2006031122A1 (en) * | 2004-09-13 | 2006-03-23 | Torfinn Johnsen | Stabilising membrane for water and nutrient |
| EA010545B1 (en) * | 2004-09-13 | 2008-10-30 | Турфин Йонсен | Stabilising membrane for water and nutrient |
| US7811466B2 (en) | 2004-09-13 | 2010-10-12 | Torfinn Johnsen | Stabilizing membrane for water and nutrient |
| CN100581380C (en) * | 2007-08-06 | 2010-01-20 | 江苏省农业科学院 | Method for obtaining free amino acid by the hydrolyzation of water bloom blue algae |
| CN101585723B (en) * | 2008-06-20 | 2012-04-11 | 青岛聚大洋海藻工业有限公司 | Method for preparing seaweed biological long-acting fertilizer |
| CN101439995B (en) * | 2008-12-22 | 2010-12-22 | 中国水产科学研究院黄海水产研究所 | Clean production method of seaweed fertilizer |
| CN101696127B (en) * | 2009-10-23 | 2012-01-11 | 李明 | Production process for manufacturing liquid fertilizer by using fish waste |
| CN102211963B (en) * | 2011-02-11 | 2013-06-19 | 北京雷力农用化学有限公司 | Algae sustained-release granular fertilizer, preparation method and application thereof |
| CN102211963A (en) * | 2011-02-11 | 2011-10-12 | 北京雷力农用化学有限公司 | Algae sustained-release granular fertilizer, preparation method and application thereof |
| CN102276326A (en) * | 2011-07-04 | 2011-12-14 | 中国农业科学院农业资源与农业区划研究所 | Sargassum organic liquid fertilizer and preparation method thereof |
| CN102344315A (en) * | 2011-07-04 | 2012-02-08 | 中国农业科学院农业资源与农业区划研究所 | Composite microbial seaweed organic liquid fertilizer and preparation method thereof |
| CN102276326B (en) * | 2011-07-04 | 2013-01-30 | 中国农业科学院农业资源与农业区划研究所 | Sargassum organic liquid fertilizer and preparation method thereof |
| CN102503705A (en) * | 2011-11-22 | 2012-06-20 | 史丹利化肥股份有限公司 | Melted pelleting green seaweed compound fertilizer and preparation method thereof |
| CN102491840A (en) * | 2011-12-02 | 2012-06-13 | 青岛丰泰海洋生物科技有限公司 | Method for preparing synergistic phosphatic fertilizer |
| FR2983852A1 (en) * | 2011-12-09 | 2013-06-14 | Droff Yves Le | Treating and recovering green algae by exothermic treatment with calcium oxide delayed reaction, comprises pretreating, exothermic treating and/or post treating green algae to obtain organic fertilizer and natural mineral product |
| CN104945107A (en) * | 2015-06-11 | 2015-09-30 | 青岛苏贝尔作物营养有限公司 | Seaweed water-soluble fertilizer and application method thereof |
| CN104945107B (en) * | 2015-06-11 | 2018-12-07 | 青岛苏贝尔作物营养有限公司 | A kind of seaweed water soluble fertilizer and its method of administration |
| CN105218248A (en) * | 2015-10-23 | 2016-01-06 | 青岛聚大洋藻业集团有限公司 | A kind of preparation method of biological and ecological methods to prevent plant disease, pests, and erosion active liquid seaweed fertilizer |
| CN105418251A (en) * | 2015-12-17 | 2016-03-23 | 叶勇 | Anti-caking controlled release fertilizer |
| CN107162690A (en) * | 2017-06-06 | 2017-09-15 | 威海温喜生物科技有限公司 | A kind of preparation method of the tomato special fertilizer containing Fish protein and algal polysaccharides |
| CN110304972A (en) * | 2019-07-03 | 2019-10-08 | 杭州青洋科技有限公司 | Utilize fertilizer and preparation method thereof made of seawater |
| CN110934229A (en) * | 2019-11-08 | 2020-03-31 | 内蒙古锡牧生命科学有限公司 | Ruminant animal nutrition composition and preparation method and application thereof |
| CN112521203A (en) * | 2020-12-26 | 2021-03-19 | 青岛蓝宝海洋生物科技有限公司 | Seaweed fertilizer and preparation method thereof |
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