CN102491798A - Algae organic fertilizer and preparing process thereof - Google Patents
Algae organic fertilizer and preparing process thereof Download PDFInfo
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- CN102491798A CN102491798A CN2011103764672A CN201110376467A CN102491798A CN 102491798 A CN102491798 A CN 102491798A CN 2011103764672 A CN2011103764672 A CN 2011103764672A CN 201110376467 A CN201110376467 A CN 201110376467A CN 102491798 A CN102491798 A CN 102491798A
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Abstract
The invention discloses an algae organic fertilizer. A preparing process of the algae organic fertilizer includes steps of (1) removing sand of algae, drying the same in the sun or baking the same by the temperature of 50 DEG C to 70 DEG C and obtaining dried algae; (2) smashing the dried algae to be algae powder, mixing the algae powder with water and breaking wall by ultrasonic waves to obtain leach liquor; and (3) filtering, centrifuging, decolorizing, concentrating and drying the leach liquor, and finally the algae organic fertilizer is formed. Further, in order to enhance nutrition, nutrient components, such as urea, monopotassium phosphate and microelements and the like can be added according to needs, so that the required algae organic fertilizer can be obtained. The algae organic fertilizer extracted by ultrasonic waves has the advantages that extraction time is short, yield is high, degradation and denaturation at the high temperature for a long time and damages to effective constituents by high temperature and high pressure are avoided, and heating is omitted and the like as compared with that extracted by conventional extraction method. Algae are used as raw materials for producing the algae fertilizer, so that the problem of pollution to the environment is solved, waste is changed into treasure, production cost is saved, and the algae organic fertilizer has great economic value and profound and lasting environmental significance.
Description
Technical field
The present invention relates to a kind of seaweed organic fertilizer and preparation technology thereof.
Background technology
At present, the long-term application chemical fertilizer has made the physicochemical character of farmland ecological environment, soil and the effective flora of soil receive destruction in various degree, and is very big to the quality influence of farm crop.Especially too much use chemical fertilizer of simple substance such as nitrogen manure, make the soil compaction aggravation, soil fertility descends, and makes the quality of crop products and nutrition be difficult to satisfy needs of people, does not more reach the requirement of green food, and causes serious environmental to pollute.
Traditional chemical fertilizer fertilizer efficiency is single, seriously polluted, and life-time service can cause soil to be destroyed.According to relevant expert investigation, the amount of application of chemical fertilizer occupies first place in the world on China's unit surface, has caused exceeding standard of nitrite content in agricultural-food and the tap water because chemical fertilizer excessive used, and seriously threatens its people's health.
Seaweed fertilizer belongs to the natural seaweed extract, and is harmless to people, animal, and environmentally safe is put into Organic food abroad and produces dedicated fertilizer, is natural, efficient, novel fertilizer.
Contain elements such as Sargassum polysaccharides, phenols, heteropolymer, N.F,USP MANNITOL, trimethyl-glycine, Lalgine, plant growth regulating substance and nitrogen, phosphorus, potassium and iron, boron, molybdenum, iodine in the marine alga; But not chemosynthesis; Harmless to people, animal; Big area can reduce the pollution to environment after using greatly, can reach the standard of green non-pollution with the agricultural-food of its plantation.Therefore, seaweed fertilizer meets modern agricultural development trend fully, and the market space is boundless.At present, natural organic fertilizer material such as seaweed fertilizer are widely used with the area in developed countries such as America and Europes, and are progressively substituting chemical fertilizer.
Seaweed fertilizer has very high biological activity, but the just stimulating plant growth of few consumption, and the nutrient composition content and the sugar degree of increase agricultural-food improve output, improve local flavor, color and luster and the storage endurance property of fruit.Seaweed fertilizer can be improved the healthy state of crop in many-side, satisfies crop to some micro-particular requirement, effectively prevents and treats the physiological disease of plant, improves cold-resistant, drought resisting, the anti-adversity ability of crop.Seaweed fertilizer can also play an important role on protection agroecological environment, self-restraint soil.Its spontaneous growth that contains is regulated material, is easy to the plant absorbing conduction, and long-term application can directly make soil (or it is organic through plant soil to be increased) activate the various useful microbes in the soil, and the biopotency of soil is increased.In addition, natural compounds that it contains such as Sodium Alginate are natural soil adjustment agent, can promote the formation of soil aggregate; Improve soil internal void space, coordinate solid, liquid, gas three ratio in the soil, can recover owing to the soil lac balance that over-burden and chemical pollution loses; Make the soil ventilation better, root system of plant is darker, and it is movable to increase soil organisms; Increase the release of available nutrient, improve the resistance of crop, set up best plant-soil ecosystem.Therefore, seaweed fertilizer is as the novel organic fertilizer material, can remedy the deficiency of China's tradition fertilizer, to the Sustainable development of agricultural sound assurance is provided, and is significant to improving the ecological environment.
The only large-scale economical alga of China just has kind more than 100, and the marine algae resource of coastlands such as Yantai, Weihai, Qingdao is abundant especially, wherein is no lack of the marine alga of high fertilizer efficiency kind is arranged.In addition, marine algas such as coastland Enteromorpha such as Yantai, Weihai, Qingdao are spread unchecked in recent years, severe contamination environment, influence coastal view especially.
At present; Domestic and international most producer mainly adopts chemical hydrolysis production seaweed fertilizer, promptly utilizes strong acid, highly basic under the violent condition of HTHP, marine alga to be handled, and this method technology is comparatively complicated; Condition is harsh, and destroyed effective constituent a large amount of in the marine alga.
Summary of the invention
To above-mentioned prior art, the invention provides a kind of seaweed organic fertilizer and preparation technology thereof.
The present invention realizes through following technical scheme:
A kind of preparation technology of seaweed organic fertilizer may further comprise the steps:
(1) with the marine alga shakeout, dry or 50～70 ℃ of oven dry, make the content of moisture be lower than 10% (mass percent), get the exsiccant marine alga;
(2) above-mentioned exsiccant marine alga is pulverized, get seaweed powder, the granularity of marine alga is not more than 0.5cm * 0.5cm in the seaweed powder; Then with seaweed powder and water with mass ratio 1: the mixed of (15～25); With hydrochloric acid (hydrochloric acid of preferred 0.1mol/L) pH is transferred to 2～3, temperature transfers to 45～50 ℃, supersonic wave wall breaking; Broken time 0＜t≤12min, ultrasonic power 100～125w; Behind the broken wall, with NaOH solution (the NaOH solution of preferred 0.1mol/L) pH is transferred to 4～5, use ultrasonic extraction 40～60min again, ultrasonic power 125～200w gets vat liquor;
(3) with above-mentioned vat liquor filtration, centrifugal to remove insolubles; Then the clear liquid that obtains is decoloured through 5% (mass percent) gac; After the decolouring, concentrate 45～50 ℃ of control thickening temperatures; Concentrated vapor pressure remains on 0.03～0.05Mpa, and the content that is concentrated into solid substance is at 20%～50% (mass percent); Promptly get seaweed organic fertilizer after the drying; Further, be nutrient-reinforced, can add nutritive ingredients such as urea, potassium primary phosphate and trace element according to demand, obtain needed seaweed organic fertilizer, the adding mode has following several kinds:
A. in dried seaweed organic fertilizer, add nutritive ingredients such as urea, potassium primary phosphate and trace element, carry out compositely, obtain needed seaweed organic fertilizer.
B. add nutritive ingredients such as urea, potassium primary phosphate and trace element in the solution after above-mentioned decolouring, before concentrating, obtain needed seaweed organic fertilizer.
C. add the solution that water is made into 10～100g/L in the seaweed organic fertilizer that after drying, obtains, and then add nutritive ingredients such as urea, potassium primary phosphate and trace element, obtain needed seaweed organic fertilizer.
Preferably, be example to add mode C, the urea of adding and the amount of potassium primary phosphate are by adding nitrogen>=10g/L, phosphorus (P in the solution of back
2O
5)>=30g/L, potassium (K
2O)>=the 60g/L meter; The amount that adds trace element by adding zinc>=4g/L, iron>=3/, L boron>=3g/L in the solution of back, adds trace element and realizes to add EDTA-Zn, EDTA-Fe and borax.
Said marine alga is Enteromorpha [Enteromorpha prolifera (Muller) J.Agardh]; Wakame [Undaria pinnatifida (Harvey) Suringar], Sargassum fusiforme [Sargassum fusiforme (Harvey) Setch] is or/and sea-tangle [Laminaria japonica Areschoug] etc.
A kind of seaweed organic fertilizer that utilizes above-mentioned preparation technology to prepare.
Seaweed organic fertilizer of the present invention adopts supersound extraction; It has the following advantages: the ultimate principle of ultrasound assisted extraction technique mainly is that the leaching that utilizes cavitation effect of ultrasonic waves to quicken effective ingredients in plant is extracted; Hyperacoustic in addition second-order effect; Add mechanical vibration, emulsification, spread, smash, chemical effect etc., can be quickened also that desire extracts that the diffusion of composition discharges and fully and solvent, be beneficial to extraction.Compare with conventional extraction method, have extraction time short, productive rate is high, avoid under the long-time hot conditions degraded sex change to avoid the destruction of HTHP to effective constituent, need not advantages such as heating, and is specific as follows:
1. extraction efficiency is high: the unique physical property of UW can be impelled plant cell tissue's broken wall or distortion, extracts more fully, and extraction yield significantly improves than traditional technology and reaches 50～500%;
2. extraction time is short: ultrasonic extraction can obtain the optimum extraction rate at 24～40 minutes usually, and extraction time shortens more than 2/3 than traditional method greatly, and the raw material treatment capacity is big;
3. it is low to extract temperature: the supersound extraction optimum temps is at 40～60 ℃, and the effective constituent of end-on thermally labile, facile hydrolysis or oxidation has provide protection, simultaneously energy-conservation greatly energy consumption;
4. wide adaptability;
5. it is few to extract soup impurity, and effective constituent is easy to separate, purifying;
6. extraction process running cost is low, and overall economic efficiency is remarkable;
7. operation is simple, maintenance of the equipment, easy maintenance.
Seaweed organic fertilizer of the present invention has kept ecosystem nutritive ingredients such as the Lalgine, Sargassum polysaccharides, N.F,USP MANNITOL, trimethyl-glycine of marine alga to the full extent; Can increase the nutrient composition content of agricultural-food; Improve output; And can improve the resistance such as disease-resistant, cold-resistant, drought resisting of farm crop, the enhancing crop suction, inhale fertilizer and water retention capacity.Seaweed organic fertilizer of the present invention, product water-insoluble≤50g/L (1: 250 times of dilution); PH value (1: 250 times of dilution): 3.0-9.0; Total arsenic (in pb)≤0.5mg/kg; Plumbous (in pb)≤1.0mg/kg.The present invention is the raw material production seaweed fertilizer with the marine alga, has solved problem of environmental pollution, turns waste into wealth, and has practiced thrift production cost, has huge economic and far-reaching Significance for Environment.
Embodiment
Below in conjunction with embodiment the present invention is further described.
Embodiment 1 preparation seaweed organic fertilizer
Step is following:
(1) with the marine alga shakeout, dries, make the content of moisture be lower than 10% (mass percent), get the exsiccant marine alga;
(2) above-mentioned exsiccant marine alga is pulverized, get seaweed powder, the granularity of marine alga is not more than 0.5cm * 0.5cm in the seaweed powder; Then with seaweed powder and water with 1: 20 mixed of mass ratio; Hydrochloric acid with 0.1mol/L transfers to 3 with pH, and temperature transfers to 50 ℃, supersonic wave wall breaking; Broken time 10min, ultrasonic power 125w; Behind the broken wall, pH is transferred to 5, uses ultrasonic extraction 50min again with the NaOH solution of 0.1mol/L, ultrasonic power 150w, vat liquor;
(3) with above-mentioned vat liquor filtration, centrifugal to remove insolubles; Then the clear liquid that obtains is decoloured through 5% (mass percent) gac; After the decolouring, concentrate 50 ℃ of control thickening temperatures; Concentrated vapor pressure remains on 0.03～0.05Mpa, and the content that is concentrated into solid substance is at 40% (mass percent); Promptly get seaweed organic fertilizer after the drying.
The prepared seaweed organic fertilizer that obtains, its water-insoluble≤50g/L (1: 250 times of dilution); PH value (1: 250 times of dilution): 3.0-9.0; Total arsenic (in pb)≤0.5mg/kg; Plumbous (in pb)≤1.0mg/kg.
(4) further; Be nutrient-reinforced; Add the solution that water is made into 50g/L in the seaweed organic fertilizer that after drying, obtains, and then add nutritive ingredients such as urea, potassium primary phosphate and trace element, obtain the seaweed organic fertilizer of nutritional fortification; The urea that adds and the amount of potassium primary phosphate are by adding nitrogen=10g/L, phosphorus (P in the solution of back
2O
5)=30g/L, potassium (K
2O)=the 60g/L meter; The amount that adds trace element by adding zinc=4g/L, iron=3/, L boron=3g/L in the solution of back, adds trace element and realizes to add EDTA-Zn, EDTA-Fe and borax.
Used marine alga is Enteromorpha [Enteromorpha prolifera (Muller) J.Agardh] in the present embodiment, through collecting in Yantai, Weihai, the Qingdao offshore floating marine alga.
The effect of embodiment 2 seaweed organic fertilizers
The alginic acid water soluble fertilizer is the application test report on cucumber
In order to verify seaweed organic fertilizer application results on cucumber produces, inquiring into of the influence of this fertilizer,, be provided with this test for high yield, high-quality, the efficient plantation of cucumber provides foundation to cucumber physiological character and output, existing test situation is reported as follows:
1. test period and place:
1.1 test period: on September 30th, 2010---January 20
1.2 test place: nitre one village, Song villages and small towns, Wendeng City
2. test materials and method
2.1 supply examination soil
| Soil type | Organic (g/kg) | Alkali-hydrolyzable nitrogen (mg/kg) | Available phosphorus (mg/kg) | Available potassium (mg/kg) | PH value |
| Brunisolic soil | 9.14 | 95.2 | 124.7 | ?131.1 | 6.1 |
2.2 supply the seaweed organic fertilizer of the nutritional fortification of examination fertilizer: embodiment 1 preparation; Organic fertilizer (be conventional farmers' muck, its total nutrient (N+P
2O
5+ K
2O)>=4%, organic>=30%); Urea; Compound organic and inorganic fertilizer (be organic fertilizer with mineral manure urea, potassium primary phosphate mix its N, P
2O
5, K
2The content of O is respectively 15%, 6%, 9%).
2.3 supply to study thing: cucumber
2.4 testing program and method:
Handle 1: 800 times of (volume multiple) diluents (every mu of 40L diluent) of the seaweed organic fertilizer of the nutritional fortification of conventional fertilizer application+embodiment 1 preparation.
Handle 2: conventional fertilizer application+with processing 1 equivalent clear water.
Handle 3: conventional fertilizer application: every 666.7m
2Base organic fertilizer material 5000kg, urea 25kg, organic-inorganic compound fertilizer 75kg.
Sub-district area 30m
2, repeating 3 times, random alignment is established guard rows all around, general north-south, line-spacing 60cm spacing in the rows 30cm about every mu 3500 strain, transplants cucumber respectively and sprayed to blade moistening in back 10 days, 25 days, 40 days.It is identical that each handles soil physico-chemical property, and experimental plot seedling number is consistent, waters, drainage condition better (sub-district is single irritates single), adopts identical field management measure, the accords with production requirement, and by the special messenger in completion on the same day.
3. test-results and analysis
3.1 different treatment is to the influence of cucumber biological character: after spraying foliage fertilizer, spray district's cucumber plant fertility proterties and have clear improvement than the check plot, the leaf look dark green, and the stem stalk is sturdy, and growing way is vigorous, and resistance strengthens, and aging delays, and the best fruiting period is long, and is as shown in table 1.
Table 1 different treatment is to the influence of cucumber biological character
| Different treatment | Setting date | Flowering period | The setting phase | Receipts phase beginning | Melon long (cm) | Melon heavy (g) | The leaf look | The fruit type |
| Handle 1 | 9.30 | 10.13 | 10.16 | 10.28 | 36.6 | 186.1 | Deep green | Normally |
| Handle 2 | 9.30 | 10.15 | 10.18 | 10.30 | 34.9 | 177.4 | Green | A small amount of deformity |
| Handle 3 | 9.30 | 10.15 | 10.18 | 10.30 | 34.6 | 175.9 | Green | A small amount of deformity |
Can find out that from table 1 flowering period, setting phase, receipts phase beginning handle 1 all early than handling 2 and handle 3, handle 2 with handle 3 identically, melon is long, melon is heavily handled 1 and obviously is better than processing 2 and handles 3; Processing 2 is more or less the same with processing 3, handles 1 dark green leaf color, and the fruit type is normal, infers thus and should can improve photosynthesis by fertilizer; Promotion is bloomed, and setting promotes growth in advance; Melon type well-grown, single fruit weight increases, and the blade plumpness is bud green.
3.2 different treatment is to the influence of the cucumber yield and the output value
Table 2 different treatment is to the influence of the cucumber yield and the output value
Annotate: the average price of cucumber sale at that time is 2.8 yuan/kilogram; Every mu sprays 93.75 gram organic water-soluble fertilizer at every turn; Amount to 281.25 grams, 60000 yuan/ton in per kilogram organic water-soluble fertilizer, 3716.9 yuan of the production costs of processing 1; 3700 yuan of the production costs of processing 2 are handled 3550 yuan of 3 production costs.
The output that can find out processing 1 from table 2 handles 2 a little more than processing 3 apparently higher than processing 2 and processing 3, and it is obvious to handle 1 the effect of increasing income, and input-output ratio is the highest.This fertilizer of deducibility has the effect of significantly increasing production and improying productivity thus.
3.3 variance analysis
Table 3 analysis of variance table
The minimum significantly balance sheet of table 4LSR method
Table 5 pats equal output multiple comparisons table everywhere
From table 3, table 4, table 5, can find out, processing 1 and processing 2, processing 1 and processing 3 differ significantly, processing 2 and processing 3 no significant differences.
3. conclusion (of pressure testing)
3..1 seaweed organic fertilizer can effectively improve growth traits, and the resistance enhancing, disease and pest reduces, and promotes growing of cucumber.
3.2 cucumber foliage-spray seaweed organic fertilizer has extremely significant effect of increasing production.
Embodiment 3 preparation seaweed organic fertilizers
Step is following:
(1) with the marine alga shakeout, 60 ℃ of oven dry make the content of moisture be lower than 10% (mass percent), get the exsiccant marine alga;
(2) above-mentioned exsiccant marine alga is pulverized, get seaweed powder, the granularity of marine alga is not more than 0.5cm * 0.5cm in the seaweed powder; Then with seaweed powder and water with 1: 15 mixed of mass ratio; Hydrochloric acid with 0.1mol/L transfers to 2 with pH, and temperature transfers to 50 ℃, supersonic wave wall breaking; Broken time 12min, ultrasonic power 150w; Behind the broken wall, pH is transferred to 4, uses ultrasonic extraction 50min again with the NaOH solution of 0.1mol/L, ultrasonic power 150w, vat liquor;
(3) with above-mentioned vat liquor filtration, centrifugal to remove insolubles; Then the clear liquid that obtains is decoloured through 5% (mass percent) gac; After the decolouring, concentrate 45 ℃ of control thickening temperatures; Concentrated vapor pressure remains on 0.03～0.05Mpa, and the content that is concentrated into solid substance is at 50% (mass percent); Promptly get seaweed organic fertilizer after the drying.
The prepared seaweed organic fertilizer that obtains, its water-insoluble≤50g/L (1: 250 times of dilution); PH value (1: 250 times of dilution): 3.0-9.0; Total arsenic (in pb)≤0.5mg/kg; Plumbous (in pb)≤1.0mg/kg.
(4) further; Be nutrient-reinforced; Add the solution that water is made into 100g/L in the seaweed organic fertilizer that after drying, obtains, and then add nutritive ingredients such as urea, potassium primary phosphate and trace element, obtain the seaweed organic fertilizer of nutritional fortification; The urea that adds and the amount of potassium primary phosphate are by adding nitrogen=15g/L, phosphorus (P in the solution of back
2O
5)=35g/L, potassium (K
2O)=the 65g/L meter; The amount that adds trace element by adding zinc=5g/L, iron=4/, L boron=4g/L in the solution of back, adds trace element and realizes to add EDTA-Zn, EDTA-Fe and borax.
Used marine alga is Sargassum fusiforme [Sargassum fusiforme (Harvey) Setch] in the present embodiment, through collecting in Yantai, Weihai, the Qingdao offshore floating marine alga.
Embodiment 4 preparation seaweed organic fertilizers
Step is following:
(1) with the marine alga shakeout, 70 ℃ of oven dry make the content of moisture be lower than 10% (mass percent), get the exsiccant marine alga;
(2) above-mentioned exsiccant marine alga is pulverized, get seaweed powder, the granularity of marine alga is not more than 0.5cm * 0.5cm in the seaweed powder; Then with seaweed powder and water with 1: 25 mixed of mass ratio; Hydrochloric acid with 0.1mol/L transfers to 3 with pH, and temperature transfers to 50 ℃, supersonic wave wall breaking; Broken time 6min, ultrasonic power 200w; Behind the broken wall, pH is transferred to 5, uses ultrasonic extraction 50min again with the NaOH solution of 0.1mol/L, ultrasonic power 200w, vat liquor;
(3) with above-mentioned vat liquor filtration, centrifugal to remove insolubles; Then the clear liquid that obtains is decoloured through 5% (mass percent) gac; After the decolouring, concentrate 50 ℃ of control thickening temperatures; Concentrated vapor pressure remains on 0.03～0.05Mpa, and the content that is concentrated into solid substance is at 30% (mass percent); Promptly get seaweed organic fertilizer after the drying.
The prepared seaweed organic fertilizer that obtains, its water-insoluble≤50g/L (1: 250 times of dilution); PH value (1: 250 times of dilution): 3.0-9.0; Total arsenic (in pb)≤0.5mg/kg; Plumbous (in pb)≤1.0mg/kg.
(4) further; Be nutrient-reinforced; Add the solution that water is made into 10g/L in the seaweed organic fertilizer that after drying, obtains, and then add nutritive ingredients such as urea, potassium primary phosphate and trace element, obtain the seaweed organic fertilizer of nutritional fortification; The urea that adds and the amount of potassium primary phosphate are by adding nitrogen=12g/L, phosphorus (P in the solution of back
2O
5)=32g/L, potassium (K
2O)=the 63g/L meter; The amount that adds trace element by adding zinc=4g/L, iron=3/, L boron=3g/L in the solution of back, adds trace element and realizes to add EDTA-Zn, EDTA-Fe and borax.
Used marine alga is wakame [Undaria pinnatifida (Harvey) Suringar] in the present embodiment, through collecting in Yantai, Weihai, the Qingdao offshore floating marine alga.
Embodiment 5 preparation seaweed organic fertilizers
Step is following:
(1) with the marine alga shakeout, 50 ℃ of oven dry make the content of moisture be lower than 10% (mass percent), get the exsiccant marine alga;
(2) above-mentioned exsiccant marine alga is pulverized, get seaweed powder, the granularity of marine alga is not more than 0.5cm * 0.5cm in the seaweed powder; Then with seaweed powder and water with 1: 20 mixed of mass ratio; Hydrochloric acid with 0.1mol/L transfers to 3 with pH, and temperature transfers to 50 ℃, supersonic wave wall breaking; Broken time 10min, ultrasonic power 125w; Behind the broken wall, pH is transferred to 5, uses ultrasonic extraction 50min again with the NaOH solution of 0.1mol/L, ultrasonic power 150w, vat liquor;
(3) with above-mentioned vat liquor filtration, centrifugal to remove insolubles; Then the clear liquid that obtains is decoloured through 5% (mass percent) gac; After the decolouring, concentrate 50 ℃ of control thickening temperatures; Concentrated vapor pressure remains on 0.03～0.05Mpa, and the content that is concentrated into solid substance is at 20% (mass percent); Promptly get seaweed organic fertilizer after the drying.
The prepared seaweed organic fertilizer that obtains, its water-insoluble≤50g/L (1: 250 times of dilution); PH value (1: 250 times of dilution): 3.0-9.0; Total arsenic (in pb)≤0.5mg/kg; Plumbous (in pb)≤1.0mg/kg.
Used marine alga is sea-tangle [Laminaria japonica Areschoug] in the present embodiment, through collecting in Yantai, Weihai, the Qingdao offshore floating marine alga.
Claims (10)
1. the preparation technology of a seaweed organic fertilizer is characterized in that, may further comprise the steps:
(1) with the marine alga shakeout, dry or 50～70 ℃ of oven dry, make the content of moisture be lower than 10%, get the exsiccant marine alga;
(2) above-mentioned exsiccant marine alga is pulverized, seaweed powder, then with seaweed powder and water with mass ratio 1: the mixed of (15～25); PH is transferred to 2～3, and temperature transfers to 45～50 ℃, supersonic wave wall breaking; Broken time 0＜t≤12min, ultrasonic power 100～125w; Behind the broken wall, pH is transferred to 4～5, use ultrasonic extraction 40～60min again, ultrasonic power 125～200w gets vat liquor;
(3) with above-mentioned vat liquor filtration, centrifugal, then the clear liquid that obtains is decoloured through 5% gac, after the decolouring, concentrate, 45～50 ℃ of control thickening temperatures, the content that is concentrated into solid substance is 20%～50%; Promptly get seaweed organic fertilizer after the drying.
2. the preparation technology of seaweed organic fertilizer according to claim 1 is characterized in that: further comprising the steps of: in dried seaweed organic fertilizer, add nutritive ingredient, carry out compositely, obtain the seaweed organic fertilizer of nutritional fortification.
3. the preparation technology of seaweed organic fertilizer according to claim 1, it is characterized in that: said step (3) is: with above-mentioned vat liquor filter, centrifugal to remove insolubles, then the clear liquid that obtains is decoloured through 5% gac; After the decolouring; Add nutritive ingredient, concentrate, 45～50 ℃ of control thickening temperatures; Concentrated vapor pressure remains on 0.03～0.05Mpa, and the content that is concentrated into solid substance is 20%～50%; Get the seaweed organic fertilizer of nutritional fortification after the drying.
4. the preparation technology of seaweed organic fertilizer according to claim 1; It is characterized in that: further comprising the steps of: add the solution that water is made into 10～100g/L in the seaweed organic fertilizer that after drying, obtains; And then the adding nutritive ingredient, obtain the seaweed organic fertilizer of nutritional fortification.
5. according to the preparation technology of claim 2 or 3 or 4 described seaweed organic fertilizers, it is characterized in that: said nutritive ingredient is urea, potassium primary phosphate and trace element.
6. the preparation technology of seaweed organic fertilizer according to claim 5 is characterized in that: said trace element is realized through adding EDTA-Zn, EDTA-Fe and borax.
7. according to the preparation technology of claim 3 or 4 described seaweed organic fertilizers, it is characterized in that: the consumption of the nutritive ingredient of adding is: the urea of adding and the amount of potassium primary phosphate, by adding nitrogen >=10g/L, phosphorus >=30g/L, potassium >=60g/L in the solution of back; The amount that adds trace element by adding zinc >=4g/L, iron >=3/, L boron >=3g/L in the solution of back, adds trace element and realizes through adding EDTA-Zn, EDTA-Fe and borax.
8. the preparation technology of seaweed organic fertilizer according to claim 1, it is characterized in that: in the said step (1), marine alga is an Enteromorpha, wakame, Sargassum fusiforme is or/and sea-tangle.
9. the preparation technology of seaweed organic fertilizer according to claim 1, it is characterized in that: in the said step (2), the granularity of marine alga is not more than 0.5cm * 0.5cm in the seaweed powder.
10. one kind is utilized the seaweed organic fertilizer that each described preparation technology prepares in the claim 1～9.
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| CN103641640A (en) * | 2013-12-15 | 2014-03-19 | 岳万华 | Activity-enhanced algae microorganism fertilizer and preparation method thereof |
| CN103755831A (en) * | 2014-01-22 | 2014-04-30 | 山东大学（威海） | Method for coproducing fucoidan and seaweed fertilizer |
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