CN1570022A - Seaweed novel use of nourishment and water keeping - Google Patents
Seaweed novel use of nourishment and water keeping Download PDFInfo
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Abstract
The invention discloses seaweed's novel use of nourishment and water keeping wherein the sea weed or its extract can be used as water-loss reducer and nutriment addition agent for farm crop and garden flower cultivation, grassland cultivation and forest plantation.
Description
Technical field
The present invention relates to agriculture forest and husbandry with nutrition water conservation new material technology field, be specifically related to marine alga in farm crop, landscape flower cultivation, meadow plantation and afforestation, as the new purposes of water-holding agent and nutritional additive.
Background technology
Not following 3000 kinds of the species of marine algae, resource is extremely abundant, wherein has the large-scale economical alga of kind more than 70 to be eaten by the mankind, sea-tangle, the laver known as us.Also having the algae of some kinds is industrial raw materials, as: the Eucheuma muricatum (Gmel.) Web glue that extracts from Eucheuma muricatum (Gmel.) Web is the raw material of foodstuffs industry, the active substance that extracts from marine alga is the good medicine of the multiple disease of treatment, is the frequent substratum of use etc. in the biological study with the agar-agar of gelidium, fragrant plant mentioned in ancient texts and the manufacturing of plan cauliflower.In fact, the development and use of marine algae resource for a long time are the problems that people pay close attention to always, and annual national governments and research institution have all dropped into great amount of manpower and material resources and financial resources in this respect, and have obtained many achievements.But about kelp and extract thereof, in the cultivation of farm crop, landscape flower, meadow plantation and afforestation, be still blank, up to the present also do not see any report as the direct application of water-holding agent and nutritional additive.
On the other hand, along with the deterioration of global environment, weather and carrying out of human society production, soil erosion and the desertification of land serious problems that become international.The problem that China exists in this regard is especially outstanding.According to the data that Chinese environmental situation protection general bureau announces, the Chinese desertification land total area has reached 370,000 square kilometres, and average annual tempo is 2460 square kilometres, degenerates with annual 8100 square kilometres speed in the grassland.Desertification of land relates to 13 provinces, cities and autonomous regions in the whole nation, and relevant geographic environment, industrial and agricultural production and the people's life has been constituted great harm and threat, badly influences the reasonable distribution and the The development in society and economy of population on China territory.More weather, environment and the people's lives of wide geographic area have caused very big harm and inconvenience to China in the sandstorm of often wreaking havoc in recent years.
In order to address the above problem, various countries' brainstrust is all the restoration and reconstruction mechanism aspect that focuses on desert vegetation of sand control research, so development research goes out a series of novel water-keeping materials for a long time.Such as, macromolecule water absorbent material water-holding agent, multifunctional green anti-drought water-retaining agent, resisting drought saving water keep a full stand of seedings bag, the agent of the multifunctional biological kind of defending and controlling sand clothing, solid carbon dioxide, nanometer micro-emulsion body ecological film, soil water keeping amendment or the like.Although above-mentioned water-keeping material has their own characteristics each, and obtain certain effect, wherein had some to belong to chemical water-holding agent, can bring certain pollution to environment after the use; And other water-holding agents are higher because of cost, and may there be economic problems in large scale application.
Summary of the invention
The objective of the invention is to seek marine alga in farm crop, landscape flower cultivation, meadow plantation and afforestation, as the new purposes of water-holding agent and nutritional additive.Especially seek a kind of moisture content that solves western arid area and keep the new way of this problem, for the west area afforestation provides a practical way.
For achieving the above object, the technical solution used in the present invention is: the new purposes of a kind of seaweed nutritive water conservation, its content is: with full algae or the extract of Gracilaria plant in the marine alga, in farm crop, landscape flower cultivation, meadow plantation and afforestation, as the application of water-holding agent and nutritional additive.
Related content in the technique scheme is explained as follows:
1, about fragrant plant mentioned in ancient texts and the classification in marine alga
Fragrant plant mentioned in ancient texts is a formal name used at school, and the north claims Thallus Gracilariae, and Fujian claims sea level line, the young palpus of palm fibre, and Guangdong claims powder dish, edible seaweed, snake dish, sand tail dish.Fragrant plant mentioned in ancient texts (Gracilaria verrucosa (Huds.) Papenf.) belongs to rhodophyta, Rhodophyceae, Gigartinales, fragrant plant mentioned in ancient texts section, Gracilaria (Gracilaria Grev.).Whole world fragrant plant mentioned in ancient texts has more than 100 kinds, is the register that China produces fragrant plant mentioned in ancient texts below:
Bow fragrant plant mentioned in ancient texts (G.arcuata) joint fragrant plant mentioned in ancient texts (G.articulata)
The crisp fragrant plant mentioned in ancient texts of eddo fragrant plant mentioned in ancient texts (G.blodgettii) (G.bursa-pastoris)
Celestial palm fragrant plant mentioned in ancient texts (G.cacalia) rope fragrant plant mentioned in ancient texts (G.chorda)
Umbrella room fragrant plant mentioned in ancient texts (G.coronopifolia) skin fragrant plant mentioned in ancient texts (G.corticata)
The edible fragrant plant mentioned in ancient texts of thick fragrant plant mentioned in ancient texts (G.crassa) (G.edulis)
The thick fragrant plant mentioned in ancient texts (G.gigas) of phoenix tail dish (G.eucheumoides)
Hard fragrant plant mentioned in ancient texts (G.firma) Hainan fragrant plant mentioned in ancient texts (G hainanensis)
The huge spore fragrant plant mentioned in ancient texts of tongue fragrant plant mentioned in ancient texts (G.lingual) (G.megaspora)
Little fragrant plant mentioned in ancient texts (G.minor) spot fragrant plant mentioned in ancient texts (G.punctata)
Fragrant plant mentioned in ancient texts (G.salicornia) Thallus Gracilariae (G.sjoestedtii) of hanging
Thorn limit fragrant plant mentioned in ancient texts (G.spinulosa) thorn limit fragrant plant mentioned in ancient texts ripple modification (G.spinulosa f.srilankia)
The flat fragrant plant mentioned in ancient texts of Gracilaria tenuistipitata (G.tenuistipitata) (G.textorii)
Fragrant plant mentioned in ancient texts (G.verrucosa)
Morphological specificity is: frond is a red-purple, dark violet green or dun redness, hyaloidin or plump succulence, frangibility.Branch is cylindric, and is inferior cylindric, flats and lobate.More than high 5～45cm, what have reaches one meter.Base portion has a circle shape holdfast.
The ecological distribution: the fragrant plant mentioned in ancient texts happiness is grown in the inner bay that fresh water flows into and water quality is fertile, and especially tranquil at stormy waves, current are more unobstructed, and physical features is more smooth, and it is comparatively vigorous to grow in the more clear bay of water quality.All there is the fragrant plant mentioned in ancient texts resource the coastal various places of China, and south such as existing Guangdong, Guangxi are coastal has developed breed.
Economic worth: the fragrant plant mentioned in ancient texts frond is big, and growth is fast, and gel content is an important source material of making agar-agar up to more than 30%.
2, the extract of above-mentioned Gracilaria phycophyta is mainly the agar-agar of polyose.
3, fragrant plant mentioned in ancient texts is as in the cultivation of farm crop, landscape flower, meadow plantation and afforestation, as the application mode of water-holding agent and nutritional additive:
(1), full algae
The full algae landfill of fragrant plant mentioned in ancient texts is wrapped root at the bottom of roots of plants or to plant.
(2), algae powder
The algae powder is crushed material or the crude extractive of fragrant plant mentioned in ancient texts plant, and its major ingredient is the agar-agar of polyose, with algae powder column landfill, mix soil or tile at plant root.
(3), phycocolloid (mainly being agar-agar of polyose etc.)
Phycocolloid is to be mixed with water by the algae powder, after boiling, and the gel that cooling forms.This gel uses as water-holding agent.
4, fragrant plant mentioned in ancient texts is as the principle of plant-growth water-holding agent and nutritional additive:
The inventor is in the process of marine alga characteristic that studies for a long period of time, the Gracilaria marine alga of discovery rhodophyta produces a large amount of polysaccharose substances by the form of intercellular secretory product, and this polysaccharose substance has good rehydration effect, this rehydration effect just makes seaweed powder can adsorb a large amount of moisture content, and can slowly release, thereby reduce the evaporation of moisture content.Utilize this specific character, the carbohydrate of adding in the marine alga to be contained, lipid, protein-based, VITAMIN and other various trace elements, can solve the nutrition water conservation problem in farm crop, landscape flower cultivation, meadow plantation and the afforestation, the moisture content that especially may solve western arid area keeps this long-term outstanding issue, for the west area afforestation provides a practical way.
5, wheat growth water retention property experiment
(1), experiment purpose
Above-mentioned seaweed powder is become gel by the proportional arrangement of 1% (W/V), draft three schemes according to the various combination of soil and phycocolloid and the mode that adds water and cultivate wheat.By the steam output of direct measurement moisture content, the seedling rate of statistics wheat seed, the indexs such as growing state of observed and recorded wheat are weighed the water retention property of seaweed powder.
(2), experiment material
Fragrant plant mentioned in ancient texts is taken from Lianyun Harbour, Jiangsu Province, and soil is taken from nursery, University Of Suzhou Sector East, and wheat seed is taken from Yancheng, Jiangsu farmers'.
(3), marine alga water retention capacity experimental technique
Get the disposal plastic cup of 10 glasss and 5 skies of ready gel.The soil that weighing is 10 parts, every part of about 75 grams.These 10 parts of soil are poured into respectively in 10 cups that gel is housed, taken by weighing 5 parts soil in addition again, every part of about 175 grams are put into the disposal plastic cup of ready prepd 5 skies respectively with it.Sowing 20 wheat seeds (wheat seed evenly is emitted in the soil) add an amount of water respectively then in 15 cups in each cup, use for seed germination.It is three control groups that above-mentioned 15 samples are divided into, and is respectively: full local soil type (5), and soil adds glue group (5), the constant weight group (5, add water every day, replenish the moisture content that evaporates, to keep identical) with initial weight.
(4), experimental result and analysis
Observe wheat seeds sprouting situation, seedling rate, wheat seedling growth and the soil of control group every day and do wet situation,, and perform writing task at any time with the quality of each cup of electronic balance weighing.
1., the wheat seed situation of emerging
By shown in Figure 1, can judge the influence that seaweed powder emerges to wheat according to the situation of emerging of wheat: the wheat seedling rate that full local soil type cultivates is minimum, and that soil adds the glue group is the same with the seedling rate of the wheat of constant weight group, and 100% sprouts.
2., wheat seedling growth situation
As can be seen from Figure 2, seaweed gel has obvious effect to wheat growth: the wheat seedling growth of full local soil type is slow, and just begins to wilt and death gradually since the 5th day wheat seeding, and the wheat seeding height no longer increases.It is unanimous on the whole that soil adds the wheat seedling growth speed of glue group and constant weight group, and just in the experiment later stage, because the seaweed gel moisture content that soil adds in the glue group exhausts, wheat seeding begins to wilt, and the wheat seeding height of constant weight group then still continues to increase.
3., water evaporates situation
As seen from Figure 3: the water retention capacity of the soil in the full local soil type can not show a candle to the water retention capacity that soil adds the seaweed gel of glue group.Find out that from the variation tendency of Fig. 3 curve soil adds glue group and full local soil type, and to begin water evaporates more consistent, but along with experiment is carried out backward, the changes in weight amplitude of full local soil type reduces obviously, and the native changes in weight amplitude that adds the glue group continues to increase.We say this be soil add in the glue group since in the seaweed gel contained moisture content slowly release, this just is equivalent to have extra moisture content to replenish.Continue to descend so show as quality on Fig. 1, this downtrending is the result that the moisture content in the phycocolloid slowly discharges.Full local soil type does not then have extra moisture content to replenish, after the water evaporates in the original soil is intact, naturally the weight changing curve of this control group has just tended towards stability.Experimental result shows that different processing has tangible influence to water evaporates.Under the same conditions, the water conservation effect of seaweed gel obviously is better than soil.
Experiment is taken three photos after finishing, and this three photos has illustrated above-mentioned conclusion more intuitively.As follows:
1., accompanying drawing 4 is photo 1: embodied whole structure figure
In photo 1, three control groups are followed successively by full local soil type, soil adds glue group, constant weight group from front to back.We are the growing state of wheat seeding as can be seen: the wheat seeding bud ratio in the full local soil type is low, and seedling is wilted, thirst; The wheat seeding seedling rate religion that soil adds in the glue group is high, and the seedling growth is better, and after moisture content had been lost in experiment later stage seaweed gel, seedling was wilted; Constant weight group seedling rate and soil add the glue group and are more or less the same, and growing state is also similar, and different these groups that just are have moisture content to replenish, and to the experiment later stage, still have adequate moisture for wheat seedling growth, so this group wheat seeding is not wilted.
2., accompanying drawing 5 is the wheat seedling growth situation contrast of 2: three control groups of photo
3., accompanying drawing 6 is a photo 3: the phycocolloid damaed cordition contrast of control group
Experimental result shows: 1. there is notable difference in the steam output of three control group moisture content, and the dehydration of full local soil type is the fastest, and secondly soil add the glue group.Show that seaweed powder has tangible water retention.2. the sprouting and the growing state a few days ago of the wheat of full local soil type are normal, but because the moisture content forfeiture is very fast, all backs wheat seeding is wilted; It is all fine that soil adds the growing state of glue group seedling rate and seedling, even do not add water fully, seedling also can healthy growth.In a word, above-mentioned different treatment to wheat emerge, growth effect is bigger, it is analyzed as follows:
1., different treatment is to the emerge influence of situation of wheat
The quality of wheat germination and the moisture content in the environment, oxygen, illumination, temperature all have relation.Mainly have this condition of moisture content in this experiment in mind.Water is the important component part of phytoplasm, contains enough moisture content in the protoplasma and could guarantee metabolicly normally to carry out.Water is again most important medium in the plant materials, and moisture content is the solvent of plant materials to the absorption and the transportation of material.Therefore, whether the abundance of moisture content can postpone to sprout, and slows down seed and finishes the time of sprouting or total sprouting is descended.The wheat of cultivating in the full local soil type is because water content is few, and the root system after emerging is not as the native well developed root system that adds the wheat of cultivating in glue group and the constant weight group, so the wheat seedling rate of full local soil type is not as two groups of backs.
2., different treatment is to the influence of wheat growth situation
On photosynthesis of the present wheat of growth table of wheat (manufacturing carbohydrate) and the respiration (consumption carbohydrate), the two is the basis of keeping the wheat vital movement, and the speed of wheat growth depends on the difference between respiration (dissimilation) and the photosynthesis (assimilation).The reinforcement of the photosynthesis of wheat and respiration and illumination, moisture content, temperature and gas and strengthening.This experiment is mainly had in mind and this factor of moisture content.The moisture content loss descends the chlorophyll content of wheat, and gaseous interchange slows down, and matter transportation is obstructed, and growth is suppressed.Experimental result shows that different processing is obvious to the growth effect of wheat, and the wheat that full local soil type cultivates is the sufficient well-grown of moisture content originally, but the moisture content forfeiture is too fast in process of growth, and wheat growth is hindered, and wheat seeding is wilted dead then.Soil adds the wheat root prosperity that the glue group is cultivated, and the moisture content in the phycocolloid slowly replenishes, and wheat growth is vigorous.
3., different treatment is to the influence of water evaporates
In this experiment, the water evaporates situation is the important indicator of check seaweed powder water retention property.Water evaporates mainly comprises evaporation from soil and two parts of wheat seeding transpiration dehydration, and rising dehydration is inevitable in the wheat growth, runs through plant-growth all the time.Though the evaporation from soil dehydration also is inevitably, can be by improving cultivation condition, the water retention capacity of improving the soil, thus slow down the speed of water evaporates as far as possible.This cultivation for plant has great realistic meaning.Research seaweed powder water retention property is exactly that the research seaweed powder is slowed down the ability that moisture content scatters and disappears.When full local soil type cultivated, the soil gap was big, fixing moisture content, and moisture content scatters and disappears fastest; It is similar with the moisture content of the full local soil type speed of scattering and disappearing that soil adds the glue group when beginning, but As time goes on, the moisture content slow release in the seaweed gel, relatively with soil, the lost speed of the moisture content in the seaweed gel will be slower than soil.
6, Inner Mongolia Autonomous Region field trial
For better proving water retention property and the use value thereof of marine alga, the inventor goes the plant cultivating experiment of being correlated with Dalate Banner, the Inner Mongol.The Inner Mongol belongs to the semiarid zone, and annual rainfall reach in the Inner Mongol to draw specially to distinguish before and planted a large amount of plant, but because dry, environment is more abominable, so great majority have all just been died young in the seedling phase generally at 200 to 400 millimeters.By with the getting in touch of Inner Mongolia Forestry Research Academy, we have been selected in the there with sample plot.
The material that experiment is selected for use has common Sabina vulgaris of Desert Area and sheep bavin, and the red cloves and the red rose of humid region plantation.By the column landfill, mix three kinds of phycocolloid burying methods of soil and bottom tiling, and phycocolloid concentration gradient test, we have had very big progress to the water retention property research of algae powder.In nearly year, the experimenter has done very detailed record, and taken much experimental field and on sand ground correlated photo before and after the plantation trees, the data that are of great value are provided for Products Development.
From the experiment gained obviously as can be known: the surviving rate of psammophyte of mixing and stirring the algae powder is apparently higher than control group, and the effect of bottom tiling is better than other two kinds and mixes and stirs mode.Experiment effect is seen the certificate copy that Inner Mongolia Forestry Research Academy provides.
Because the technique scheme utilization, the present invention compared with prior art has following advantage and effect:
1, the present invention is applied to agriculture forest and husbandry in that to improve on the environmental effect effect obvious especially with marine alga as water-holding agent and nutritional additive, and has double meaning, on the one hand, large scale cultivating and cultivating seaweed can reduce the eutrophication of seawater, improve the marine eco-environment; On the other hand, widely apply marine alga can further develop and administer western desert, for the west area afforestation provides a practical way.
2, the present invention is applied to marine alga in farm crop, landscape flower cultivation, meadow plantation and the afforestation as water-holding agent and nutritional additive, from plant water keeping agent material angle, this strain All Pure Nature composition, biodegradable, compare with chemical water-holding agent and to belong to environmentfriendly products, nuisanceless.
3, the present invention is applied to marine alga in farm crop, landscape flower cultivation, meadow plantation and the afforestation as water-holding agent and nutritional additive, from the raw material sources angle, aboundresources, especially this fragrant plant mentioned in ancient texts phycophyta growth is fast, per 100 days weight can increase by 1000 times under ocean growing environment preferably, and is therefore cheap economically.
4, because the invention process needs large scale cultivating and cultivating seaweed, and red tide is serious day by day to the influence of marine industries and environment in recent years, marine alga can absorb nutritive salt such as nitrogen, phosphorus in the seawater in a large number in process of growth, thereby can purifying sea water, improve the marine eco-environment, reduce the generation of red tide.
Description of drawings
Accompanying drawing 1 is the wheat seed of three control groups of the present invention situation comparative graph of emerging;
Accompanying drawing 2 is the wheat seedling growth situation comparative graph of three control groups of the present invention;
Accompanying drawing 3 steams the situation comparative graph for the moisture content of three control groups of the present invention;
Accompanying drawing 4 finishes three control group whole structure photos that the back is taken for the present invention tests;
Accompanying drawing 5 finishes three control group wheat seedling growth situation contrast photos that the back is taken for the present invention tests;
Accompanying drawing 6 is the phycocolloid damaed cordition contrast photo of experiment contrast group of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is further described:
Embodiment: the new purposes of a kind of seaweed nutritive water conservation, with the extract of Gracilaria in the marine alga, in farm crop, landscape flower cultivation, meadow plantation and afforestation, as the application of water-holding agent and nutritional additive.
The Gracilaria phycophyta of rhodophyta produces a large amount of polysaccharose substances by the form of intercellular secretory product in the marine alga, and we handle fragrant plant mentioned in ancient texts with chemical process, and the physical chemistry treating processes through a series of complexity can extract from phycophyta, makes seaweed powder.Because of the seaweed powder of making has the rehydration effect,, thereby reduced the evaporation of moisture content so we can utilize this characteristic to make seaweed powder can adsorb a large amount of moisture content, and can slowly release.The moisture content that this specific character of seaweed powder might solve western arid area keeps this long-term outstanding issue, for the west area afforestation provides a practical way.
The extraction of seaweed powder can be adopted following method (also can adopt existing known other method):
1, the processing of raw material
With masher fragrant plant mentioned in ancient texts is milled to 0.5cm length, removes molecule with 100 mesh sieves sieve.
2, extract preceding processing (processing of discoloring)
Take by weighing 20.00 grams earlier and grind sample when extracting, put into the 2L beaker, to wash twice from the beginning, add 1% formaldehyde solution 300ml then, soaking at room temperature 14～24h (generally to get final product about 14h) filters, and the algae piece respectively washs once with tap water and distilled water.
3, heating is extracted
Discolor to add on 1% sodium carbonate solution 1L (10g Carbon Dioxide sodium solution is in 10L distilled water) the discharge stove in the algae piece after handling and constantly stir with the speed of electric mixer with per minute 350 commentaries on classics, attemperation is in 70～75 ℃ (being generally 73 ± 3 ℃) heating 1h, then with the individual layer filtered through gauze, if can suitably add the dilution earlier of 300～400ml water when the colloidal sol viscosity is too big and then filter.Dregs after the filtration are extruded gently with glass stick.Add 1% sodium carbonate solution 600ml in the dregs, same temperature is carried out the heating second time and is extracted 1h, same spline filter.Dregs add 0.5% sodium carbonate solution 500ml again, and same temperature is extracted 0.5h, filter, and use manual squeeze at last, and glue is flowed out as far as possible.Three filtrates are merged, with B with glass yarn succeeded by the cotton filtration of bleeding.The thick solution of sodium alginate of gained is khaki, and concentration is approximately about 0.2%, and major part is a water, still contains Na in addition
2CO
3, pigment, crude protein and various water soluble salt so must concentrate and make with extra care through following step.
4, acid cure is poly-
Slowly inject dilute hydrochloric acid (3: 10, proportion is about 1.05) from drop-burette in thick colloidal sol and constantly stir simultaneously, alginic acid is frozen into gel gradually and floats to liquid level, be glassy yellow to clear liquid down and be terminal point, this moment solution pH between 1.4～2.0.With gauze gel is leached, it is inferior to give a baby a bath on the third day after its birth with distilled water, acid that flush away is unnecessary and inorganic salts.
5, alkali dissolution
Gel after the washing is moved in the beaker of 1L, add 100ml water, stir, gel is fully absorbed water, one side is injected 80ml 2%NaOH solution then, fully stirs the back room temperature and places a night, and gel can all be dissolved as sodium salt.This moment is dense because of colloid, and unusual thickness will notice that all little gel pieces all must dissolve fully.
6, dehydration and dry
Treat to dissolve fully the back and inject 85% about 1.5 times ethanol of its volume, fully stir, sodium salt floats through being dehydrated into flocks.A large amount of pigments and residue alkaline solution are dissolved in the ethanol.Place 1h, precipitation is leached, embathe twice with 300ml 50% ethanol, about at every turn 1h, purpose is the alkali that flush away mixes up of trying one's best.Unnecessary ethanol is removed in extrusion then, is torn into fibrously, puts in the glass dish, puts into 30 ℃ of vacuum-drying wares with CaCl
2Make siccative and find time a dry night, promptly get faint yellow fibrous algae powder to white.
During use, with algae powder preparation phycocolloid, in farm crop, landscape flower cultivation, meadow plantation and afforestation, as the use of water-holding agent and nutritional additive.The compound method of phycocolloid: the algae powder is mixed with water, heating for dissolving, treat its boiling after, be cooled to gel.
Claims (2)
1, the new purposes of a kind of seaweed nutritive water conservation is characterized in that: with full algae or the extract of Gracilaria plant in the marine alga, in farm crop, landscape flower cultivation, meadow plantation and afforestation, as the application of water-holding agent and nutritional additive.
2, the new purposes of seaweed nutritive water conservation according to claim 1, it is characterized in that: the extract of above-mentioned Gracilaria phycophyta is mainly the agar-agar of polyose.
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| CN 200410014811 CN1239675C (en) | 2004-04-28 | 2004-04-28 | Seaweed novel use of nourishment and water keeping |
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| CN 200410014811 CN1239675C (en) | 2004-04-28 | 2004-04-28 | Seaweed novel use of nourishment and water keeping |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350826C (en) * | 2005-04-26 | 2007-11-28 | 苏州大学 | Seaweed nutritive mud and its dry masterbatch and preparation method |
| CN100412100C (en) * | 2006-04-25 | 2008-08-20 | 宁波大学 | Seaweed type water-absorbing-retaining material, and its preparing method |
| CN102219939A (en) * | 2011-04-01 | 2011-10-19 | 刘静 | Water retaining agent and preparation method thereof |
| CN102584411A (en) * | 2011-01-06 | 2012-07-18 | 宁波大学 | Agar protococcus biologic fertilizer and preparation method thereof |
| CN102640763A (en) * | 2012-03-28 | 2012-08-22 | 青岛农业大学 | Application of extracellular secretion of prorocentrum donghaiense in promotion of growth of corn under seawater stress |
| CN108690633A (en) * | 2018-07-31 | 2018-10-23 | 郝笛 | Modifying agent and modification method for desert planting |
| CN110055078A (en) * | 2019-04-16 | 2019-07-26 | 安徽泓森高科林业股份有限公司 | A kind of plant water keeping agent and preparation method thereof |
-
2004
- 2004-04-28 CN CN 200410014811 patent/CN1239675C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350826C (en) * | 2005-04-26 | 2007-11-28 | 苏州大学 | Seaweed nutritive mud and its dry masterbatch and preparation method |
| CN100412100C (en) * | 2006-04-25 | 2008-08-20 | 宁波大学 | Seaweed type water-absorbing-retaining material, and its preparing method |
| CN102584411A (en) * | 2011-01-06 | 2012-07-18 | 宁波大学 | Agar protococcus biologic fertilizer and preparation method thereof |
| CN102584411B (en) * | 2011-01-06 | 2014-03-05 | 宁波大学 | Agar protococcus biologic fertilizer and preparation method thereof |
| CN102219939A (en) * | 2011-04-01 | 2011-10-19 | 刘静 | Water retaining agent and preparation method thereof |
| CN102219939B (en) * | 2011-04-01 | 2013-02-13 | 山东乐丰生物科技有限公司 | Water retaining agent and preparation method thereof |
| CN102640763A (en) * | 2012-03-28 | 2012-08-22 | 青岛农业大学 | Application of extracellular secretion of prorocentrum donghaiense in promotion of growth of corn under seawater stress |
| CN108690633A (en) * | 2018-07-31 | 2018-10-23 | 郝笛 | Modifying agent and modification method for desert planting |
| CN110055078A (en) * | 2019-04-16 | 2019-07-26 | 安徽泓森高科林业股份有限公司 | A kind of plant water keeping agent and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1239675C (en) | 2006-02-01 |
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