CN1255335C - Method for biological repairing eutrophication of subtropical zone sea water fish culture in net cage area - Google Patents
Method for biological repairing eutrophication of subtropical zone sea water fish culture in net cage area Download PDFInfo
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- CN1255335C CN1255335C CNB2004100065873A CN200410006587A CN1255335C CN 1255335 C CN1255335 C CN 1255335C CN B2004100065873 A CNB2004100065873 A CN B2004100065873A CN 200410006587 A CN200410006587 A CN 200410006587A CN 1255335 C CN1255335 C CN 1255335C
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- eutrophication
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- 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
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
Abstract
The present invention discloses a biological repairing method for the eutrophication of semi-tropical marine fish cage culture regions, and relates to edible seaweed cultivation, particularly to water cultivation close to or in cages for biologically repairing the eutrophication of the semi-tropical marine fish cage culture regions. The biological repairing method comprises the following steps: an algae species is selected and is cultivated in seawater, the biomass density of the algae species initially cultivated is smaller than 800kg/ mou; the algae is harvested after the density is larger than 1000kg/ mou; and the biomass density after harvest is smaller than 600kg/ mou. At least two supporting rods arranged side by side are erected on a suspended cultivation raft for biological repair, the ends of the supporting rods are connected into a frame body by a rope or a bracket; a tying rope is arranged between the supporting rods; and the frame body is provided with at least one suspending body, and is fixed by at least four fixing ropes. The biological repairing method biologically repairs the eutrophication of marine culture by the mixed culture through combining seaweed cultivation and cage fish culture, remarkably relieves the eutrophication of marine culture with simple method and low cost, effectively solves the outstanding issue of biological environment, and has prominent ecological benefit, social benefit and economical benefit.
Description
Technical field
The present invention relates to a kind of cultivation of edible seaweed, near the water planting net cage or in the net cage especially is used for the biological restoration of marine cage fish culture district, subtropics eutrophication.
Background technology
Sea farming is the important component part of China's Coastal Areas economy.But the eutrophication that the seawater animal cultivation causes causes disease and red tide to take place frequently, contaminate environment not only, and jeopardize aquaculture, the financial loss heaviness.The improvement of coastal waters eutrophication can not only solve by administration or legal means, and adopts the large ocean plant efficient to extract in the seawater nutritive salt and be that reality is feasible with its means that migrate out water body.That is, carry out algal cultivation, utilize marine alga to absorb nutritive salt such as N, P in the water body, emit O simultaneously in animal cultivation eutrophication sea area
2, supply with cultivated animals, suppress the anaerobic bacterium activity, reduce CH
4, H
2S, NH
3Wait the generation of some toxic and harmfuls; Create good breeding environment, strengthen the cultivated animals disease resistance, improve growth rate.By artificial results marine alga the nutritive substance in the water body is migrated out system, reach the purpose of alleviating and eliminating eutrophication.This biological restoration approach has become the preferred version of the solution environmental problem of praising highly in the world.But at home and abroad there is no the method and technology of the system of repairing, particularly solve the annual problem that continues reparation at sea area, subtropics sea farming eutrophication.
Summary of the invention
The present invention is intended to according to ecological principle, adopts the kelp with different ecological characteristic to be used for the biological restoration of marine cage fish culture district eutrophication, has realized annual continual reparation.Another object of the present invention is the marine alga that will be used to the repair feed as high added value sea-foods such as abalones, also can be processed into economic products such as precious marine product, foodstuff additive, industrial raw material.Not only solve ecological environment problem but also produce considerable economic.
The step of the biological renovation method of marine cage fish culture district, said subtropics eutrophication is
1, selects to be used for the algae kind of marine cage fish culture district, subtropics eutrophication biological restoration;
2, the marine alga that will be used for marine cage fish culture district, subtropics eutrophication biological restoration is put in a suitable place to breed at seawater, and the biomass density of initially putting in a suitable place to breed is less than 800kg/ mu;
3, gather after biomass density is greater than 1000kg/ mu, the biomass density after gathering is less than 600kg/ mu.
Said reparation biology can be selected from least a kind in Thallus Gracilariae (Gracilaria lemaneaformis) or the radial striations river hedge (Gracilarialichenoides) etc.The said equipment of putting in a suitable place to breed that is used for the eutrophication reparation of marine cage fish culture district, subtropics can be selected hanging raft culture frame for use, and perhaps net cage is broadcast at the end.
The biological restoration hanging raft culture frame of marine cage fish culture district, said subtropics eutrophication is provided with at least 2 poles that are arranged side by side, the end of pole is connected into support body by rope or support, be provided with the tether that is used to place the biological restoration plant between the pole, support body is provided with at least 1 suspensoid and is used to keep support body to bubble through the water column, and support body is fixed on the mounting block by at least 4 stationary ropes.
The pole that is arranged side by side is preferably 5～10, is good with 6～8.Pole preferably is parallel to each other, and can select bamboo for use, wood, and non-metallic material such as plastics or light metal material are made, and are preferably pipe.
Said support body preferably is rectangle, and support body length is preferably 15～25m greater than 5m; Width is preferably 4～5m greater than 2m.The suspensoid that support body is provided with can be selected the plastic foam body for use.Mounting block can be selected fixed link for use, stake, or anchor etc.
Broadcast net cage at the bottom of the biological restoration of marine cage fish culture district, said inferior subtropics eutrophication and be provided with the net cage body, net cage body upper opening is provided with bracing frame, and bracing frame is provided with at least 2 suspensoids, is used to keep the net cage body to be suspended in the water surface.The net cage body is fixed on the mounting block by bracing frame itself or rope etc., or extension ties up on the Net box frame for fishery.
Said net cage body can be rectangular parallelepiped, and the net cage body length is preferably 5～15m greater than 3m; Width is preferably 3～5m greater than 1m, and the degree of depth is preferably 0.7～1.5m greater than 0.5m.Bracing frame can adopt pole and rope to form, and rope connects with the end of pole, and pole is selected pair of right and left for use, suspensoid preferably is located on the long limit of net cage body opening bracing frame, and pole is selected bamboo for use, wood, non-metallic material or light metal materials such as plastics are preferably pipe.Suspensoid can be selected the plastic foam body for use.
Outstanding feature of the present invention is
1) simple algal cultivation is combined with cage culture, raise together with, not only can be with the reparation biology selected for use feed as added value sea-foods such as abalones, or be processed into precious marine product, foodstuff additive, industrial raw material etc., the more important thing is the biological restoration that is used for the sea farming eutrophication, alleviated the sea farming eutrophication significantly with simple method, very low cost, solve pendent for a long time ecological environment problem effectively, had outstanding ecological benefits, social benefit and economic benefit.
2) reparation biology of the present invention is easy to get, and the equipment of putting in a suitable place to breed is simple, and working method is simple and convenient and easy to study, and control of process condition is simplified, and adaptability is strong, is easy to promote, and is convenient to scale operation.
Description of drawings
Fig. 1 is the embodiment of the invention 1 a Thallus Gracilariae hanging raft culture frame synoptic diagram.
Fig. 2 is the embodiment of the invention 1 a Thallus Gracilariae hanging raft culture frame floor plan synoptic diagram.
Fig. 3 is the embodiment of the invention 2 radial striations river hedge aquaculture net cage synoptic diagram.
Embodiment
Following examples will the present invention is further illustrated in conjunction with the accompanying drawings.
Select for use Thallus Gracilariae biological as repairing, employing is hung the mode of supporting Thallus Gracilariae is put in a suitable place to breed in seawater.Adopt hanging raft culture frame as shown in Figure 1, raft has set up 7 bamboo poles 1, bamboo pole 1 is parallel to each other, the end of bamboo pole 1 is connected into rectangular support body by main rope 2, and support body length is 20m, and width is 4.5m, be provided with between the bamboo pole 1 and be used to press from both sides the tether (or claiming the seedling rope) 3 of hanging the Thallus Gracilariae seedling, support body is provided with 4 plastic foam balls 4, is used to keep support body to bubble through the water column, and support body is fixed in the bamboo stake 6 by 4 stationary ropes 5.Adjacent four stationary ropes, 5 shared bamboo stakes 6 as shown in Figure 2, can reduce material and workload like this, can also offset 4 horizontal pulls that static line is mutual, make the bamboo stake firmer, and keep steadily whole.The about 2.5m of line space that each raft frame is 7, the about 4m of column pitch.
Hanging raft culture frame is laid in around the fish culture cage, and hanging raft culture frame preferably alternates with fish culture cage and arranges, and also can utilize shoaling water on every side, cage culture district to arrange.
As shown in Figure 3, broadcast net cage at the bottom of the biological restoration of marine cage fish culture district, said subtropics eutrophication and be provided with net cage body 8, net cage body 8 upper openings are provided with the left and right sides two bamboo poles 9 parallel to each other, rope 10 connects with the two ends of bamboo pole 9, rope 10 is provided with 4 plastic foam bars 11, is used to keep net cage body 8 to be suspended in the water surface.Net cage body 8 is fixed on the mounting block by rope 10, or extension ties up on the fish culture cage.The net cage body can be rectangular parallelepiped, net cage body length 10m, width 4m, the about 1m of the degree of depth.Be hung on and hang under the raft frame of supporting Thallus Gracilariae, also can be hung under the empty frame of fish culture cage, per 3 Net box frame for fishery are hung a fragrant plant mentioned in ancient texts aquaculture net cage down.
Broadcast at the bottom of the net cage can prevent to repair biological by self-growing other fish in sea area (as, common Lan Ziyu) food.
When repairing biology and putting in a suitable place to breed, being example with Thallus Gracilariae folder seedling, is the seedling rope with the plastic ties of the about 6mm of diameter, if raft frame length is 20m, seedling rope length is advisable with 21.5m.The every end of seedling rope is reserved 75cm and is used for the seedling rope is fixed on the raft frame, and 20m long seedling rope in middle part presss from both sides cluster Thallus Gracilariae, every bunch of heavy general 5～15g of Thallus Gracilariae every 10～20cm.If just reach repairing effect preferably during for beginning, can suitably encrypt during the folder seedling, promptly every 10cm folder cluster Thallus Gracilariae seedling; Also can adopt the way that strengthens folder seedling amount, make every bunch of Thallus Gracilariae seedling weight keep 10～15g, repair biological initial density to improve.
Hanging seedling with Thallus Gracilariae is example, and fasten on the bamboo pole on raft frame both sides at the seedling rope two ends that pressed from both sides behind the Thallus Gracilariae seedling, and seedling rope middle portion lodge is on the raft frame.General 30～the 40cm of seedling rope spacing.General Thallus Gracilariae initial density 50～100kg/ mu of repairing the district.
If it is foster to adopt the radial striations fragrant plant mentioned in ancient texts to hang, the same Thallus Gracilariae of its method initially hangs foster density but can suitably strengthen, every 10cm folder cluster fragrant plant mentioned in ancient texts seedling, every bunch of seedling weight keeps 10～15g, the general 30cm of seedling rope spacing, general fragrant plant mentioned in ancient texts initial density 100～200kg/ mu of repairing the district.
If broadcast at the bottom of adopting the radial striations fragrant plant mentioned in ancient texts, seedling is directly sowed in the net cage water surface, allows its natural subsidence to the net cage bottom.For reaching repairing effect preferably, initial density can suitably strengthen, and generally is advisable with 1000kg/ mu.
Repair biological Auto-regulating System of Density of Heavy Medium:
(1) Thallus Gracilariae
Respectively after putting seedling when one and a half months and 3 months harvesting once still keep the long Thallus Gracilariae of about 15cm during harvesting on the seedling rope and continue to breed as seedling.Be to guarantee repairing effect, rope results between also can adopting, promptly put behind the seedling one and a half months between half Thallus Gracilariae of rope results, then every other month between another batch of rope results, can at any time keep more reparation biomass at sea like this.
(2) radial striations fragrant plant mentioned in ancient texts
Hang rope results between foster fragrant plant mentioned in ancient texts employing, the mode that a rope is filled the gaps with seedlings is regulated fragrant plant mentioned in ancient texts density.Initial the hanging of fragrant plant mentioned in ancient texts supported the about 150kg/ mu of density, first fragrant plant mentioned in ancient texts of gathering behind the 30d, and rope is gathered between employing, and every two adjacent seedling ropes are gathered 1, keep 1, and the seedling rope after gathering is by the density covering fragrant plant mentioned in ancient texts seedling of 75kg/ mu.After this gather 1 time every 25d, the fragrant plant mentioned in ancient texts of gathering is the fragrant plant mentioned in ancient texts of not receiving last time, and the density with 75kg/ mu covers the fragrant plant mentioned in ancient texts seedling equally again.
The fragrant plant mentioned in ancient texts of broadcasting at the bottom of the net cage was gathered once in general per 15 days, and for ensureing repairing effect, the biomass of river hedge should remain on 1000kg/ mu in the back net cage of gathering.
Claims (1)
1, the biological renovation method of subtropics marine cage fish culture district eutrophication is characterized in that its step is
1), the algae kind of selecting to be used for marine cage fish culture district, subtropics eutrophication biological restoration is selected from Thallus Gracilariae or radial striations river hedge at least a kind;
2), the marine alga that will be used for marine cage fish culture district, subtropics eutrophication biological restoration puts in a suitable place to breed at seawater, the biomass density of initially putting in a suitable place to breed is less than 800kg/ mu;
3), gather after biomass density is greater than 1000kg/ mu, the biomass density after gathering is less than 600kg/ mu.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100065873A CN1255335C (en) | 2004-03-11 | 2004-03-11 | Method for biological repairing eutrophication of subtropical zone sea water fish culture in net cage area |
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|---|---|---|---|
| CNB2004100065873A CN1255335C (en) | 2004-03-11 | 2004-03-11 | Method for biological repairing eutrophication of subtropical zone sea water fish culture in net cage area |
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| CN1559934A CN1559934A (en) | 2005-01-05 |
| CN1255335C true CN1255335C (en) | 2006-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331849B (en) * | 2007-06-25 | 2011-07-20 | 上海水产大学 | Ecology reparation method of eutrophication barricaded sea area using gracilaria marine macroalgae |
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| CN100377640C (en) * | 2005-03-24 | 2008-04-02 | 宁波大学 | Method of improving ecological environment of enclosed seawater pond |
| CN100484893C (en) * | 2005-12-30 | 2009-05-06 | 中国科学院海洋研究所 | Integrated ecology renovation method for extratropical eutrophication marine site |
| AT503083B1 (en) | 2006-01-05 | 2014-06-15 | Wolfgang Dipl Ing Mag Wesner | PROCESS FOR THE PREPARATION OF SALT WATER AND APPARATUS FOR IMPLEMENTING THE PROCESS |
| CN101100336B (en) * | 2006-07-07 | 2011-02-02 | 中国科学院大连化学物理研究所 | Method for purifying sea animal cultivation sewage |
| CN100463869C (en) * | 2007-02-28 | 2009-02-25 | 哈尔滨工业大学 | Bighead carp, grass carp, cladophora and daphnia hyaline multi-biology cooperated algae control method |
| CN100445220C (en) * | 2007-02-28 | 2008-12-24 | 哈尔滨工业大学 | Silver carp, bighead carp and cladophora united algae control method |
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| CN101622957B (en) * | 2009-08-14 | 2011-04-20 | 连江罗源湾金牌渔业科技有限公司 | Manufacture method and application of anti-storm net wing |
| CN103814852B (en) * | 2014-03-10 | 2015-05-27 | 国家海洋局第三海洋研究所 | Regulation control method for preventing oxygen deficiency at night in gracilaria and prawn ecological cultivation |
| CN104429894B (en) * | 2014-05-15 | 2016-08-31 | 浙江海洋学院 | Neritic environment improves device |
| CN106258922A (en) * | 2016-08-17 | 2017-01-04 | 暨南大学 | A kind of indoor rapid amplifying culture systems of tangleweed Thallus Gracilariae |
| CN108094277A (en) * | 2018-01-26 | 2018-06-01 | 上海海洋大学 | A kind of new Corbicula fluminea hanging culture bamboo raft |
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2004
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101331849B (en) * | 2007-06-25 | 2011-07-20 | 上海水产大学 | Ecology reparation method of eutrophication barricaded sea area using gracilaria marine macroalgae |
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