CN115245138A - Marine ecological breeding method for oysters and kelp - Google Patents
Marine ecological breeding method for oysters and kelp Download PDFInfo
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- CN115245138A CN115245138A CN202210840810.2A CN202210840810A CN115245138A CN 115245138 A CN115245138 A CN 115245138A CN 202210840810 A CN202210840810 A CN 202210840810A CN 115245138 A CN115245138 A CN 115245138A
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- 241000512259 Ascophyllum nodosum Species 0.000 title claims abstract description 132
- 241000237502 Ostreidae Species 0.000 title claims abstract description 120
- 235000020636 oyster Nutrition 0.000 title claims abstract description 120
- 238000009395 breeding Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000012258 culturing Methods 0.000 claims abstract description 15
- 230000001488 breeding effect Effects 0.000 claims abstract description 8
- 239000000618 nitrogen fertilizer Substances 0.000 claims abstract description 5
- 239000013535 sea water Substances 0.000 claims description 12
- 241000195493 Cryptophyta Species 0.000 claims description 11
- 235000013372 meat Nutrition 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 4
- 238000004114 suspension culture Methods 0.000 claims description 4
- 238000003306 harvesting Methods 0.000 abstract description 2
- 241001261506 Undaria pinnatifida Species 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000012136 culture method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 238000009364 mariculture Methods 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000004584 weight gain Effects 0.000 description 2
- 235000019786 weight gain Nutrition 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 241000238424 Crustacea Species 0.000 description 1
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- 239000003337 fertilizer Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
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- 235000015170 shellfish Nutrition 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/54—Culture of aquatic animals of shellfish of bivalves, e.g. oysters or mussels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G33/00—Cultivation of seaweed or algae
-
- 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
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention relates to a marine ecological breeding method for oysters and sea tangles, and belongs to the field of marine breeding. Adopting raft type hanging culture, hanging culture cages on a raft frame at intervals by using tying ropes, wherein the distance between every two adjacent culture cages is 1.0-1.5 m, the number of the culture cages is 12-15, and 15-25 oyster seedlings are filled in each layer; fixing kelp seedling ropes on raft frames in the middle of adjacent culture cages on each raft frame by using tying ropes, clamping kelp seedlings on the kelp seedling ropes in 11 months every year at the water temperature of 0-19 ℃, hanging and culturing the kelp seedlings on the raft frames, not harvesting until the kelp stops growing, and leading the edges of blades to fall off seriously until the kelp seedlings die; the leaves continuously fall off in the growth process of the kelp to form organic debris which provides bait for the oysters and also provides continuous bait for the growth of the oysters, and meanwhile, the excrement of the oysters can also provide nitrogen fertilizer for the growth of the kelp; and cultivating the kelp seedlings again in 11 months of the next year, repeating ecological cultivation of oysters and kelp, and continuously filling the oyster seedlings into the cultivation cages for cultivation after the oysters are harvested.
Description
Technical Field
The invention relates to the field of marine product culture, in particular to a marine ecological culture method for oysters and kelp.
Background
As is well known, the influence of the development of the mariculture industry on the environment increasingly draws attention of people, and the long-term high-density cultivation of a single variety causes the decline of offshore fishery resources and the reduction of the yield and the quality of cultivated varieties. Oyster cultivation faces the same problem, because cultivation varieties are single, cultivation scale is rapidly increased, and the feed amount of oysters is large, 400L of seawater can be filtered by one oyster with 4 oysters in one day, under the condition of no external nutrition supplement, basic biomass of oyster cultivation sea areas is rapidly reduced, and the phenomena of oyster eating incompetence and oyster fertility reduction are more and more serious. If no effective measures are taken, the healthy development of the oyster industry is seriously influenced, and even becomes a bottleneck of the development of the oyster industry. Oyster cultivation is a support industry of fishery economy, and the problem of oyster fullness must be solved to ensure the quality of oyster products.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the marine ecological breeding method of the oysters and the kelp, the method can improve the fullness and breeding yield of the oysters, and the operation is simple.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for marine ecological culture of oysters and kelp adopts raft type suspension culture, the main body part of the raft type suspension culture consists of floats, raft frames, culture cages, stem ropes and timber piles which are arranged in parallel, each raft frame is fixed by two groups of stem ropes and timber piles, the timber piles are driven into a seabed soil layer, the stem ropes are tied on the timber piles, the floats are fixed on the raft frames by tying ropes so that the raft frames float on the sea surface, the method is characterized in that,
a. the culture cages are hung on the raft frame at intervals by using tying ropes, the distance between every two adjacent culture cages is 1.0-1.5 m, the number of the culture cages is 12-15, and 15-25 oyster seedlings are filled in each layer;
b. fixing kelp seedling ropes on raft frames in the middle of adjacent culture cages on each raft frame by using tying ropes, wherein the water temperature is 0-19 ℃ in 11 months every year, and clamping kelp seedlings on the kelp seedling ropes for vertical culture, or fixing the kelp seedling ropes between two adjacent raft frames by using tying ropes, and clamping the kelp seedlings on the kelp seedling ropes in 11 months every year, wherein the water temperature is 0-19 ℃ in 0-19 ℃ for horizontal culture;
c. 25-30 kelp seedlings are clamped on one kelp seedling rope, and the length of each kelp seedling is more than 15 cm;
d. the kelp seedlings are hung on a raft frame and are not harvested until the kelp stops growing, and the edges of the leaves are gradually shed until the kelp dies;
e. the leaves continuously fall off in the growth process of the kelp to form organic debris which provides bait for the oysters, the oysters filter and eat unicellular algae and the organic debris in the seawater to provide continuous bait for the growth of the oysters, and meanwhile, the excrement of the oysters can also provide nitrogen fertilizer for the growth of the kelp;
f. culturing kelp seedlings again by 11 months in the next year, and repeating ecological culturing of oysters and kelp;
g. when the meat yield of the oysters is more than or equal to 15 percent, the oysters can be harvested, and the oysters can be continuously filled into oyster seedlings through the cultivation cage 3 for cultivation after being harvested.
The raft frame is arranged to require the raft direction to be vertical to the flow direction of seawater.
The effective length of the raft frame is 85-95 m, and the raft interval is more than or equal to 12m.
The distance between the kelp seedling rope and the fixed point of the cultivation cage is 0.5-0.75 m.
The method has the advantages that the method can improve the fertility and the breeding yield of the oysters, is simple to operate and easy to popularize, is beneficial to the development of carbon sink fishery, and has remarkable economic, ecological and social benefits.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention.
In the figure, 1 is a buoy, 2 is a raft frame, 3 is a cultivation cage, 4 is a kelp seedling rope, 5 is a stem rope, and 6 is a timber pile.
Detailed Description
In the figure, the invention adopts raft type hanging culture, the main body part of the raft type hanging culture consists of a buoy 1, raft frames 2 arranged in parallel, culture cages 3, stalk ropes 5 and timber piles 6, the arrangement of each raft frame requires that the raft is vertical to the flow direction of seawater, the effective length of the raft frames is 85-95 m, the raft interval is more than or equal to 12m, each raft frame 2 is fixed by two groups of stalk ropes 5 and timber piles 6, the timber piles 6 are driven into a seabed soil layer for about 3-4 m, the stalk ropes 5 are tied at one half of the lower end of the timber piles 6, the buoy 1 is fixed on the raft frame 2 by tying ropes, so that the raft frame 2 floats on the sea surface, the culture cages 3 are hung on the raft frames 2 by tying ropes at intervals, the distance between the adjacent culture cages 3 is 1.0-1.5 m, the culture cages 3 are 12-15 layers, and 15-25 oyster seedlings are filled in each layer; fixing kelp seedling ropes 4 on raft frames 2 in the middle of adjacent culture cages 3 on each raft frame 2 by using tying ropes, wherein the distance between each kelp seedling rope and a fixed point of each culture cage is 0.5-0.75 m, the water temperature is 0-19 ℃ in 11 months per year, and clamping kelp seedlings on the kelp seedling ropes 4 for vertical culture, or fixing the kelp seedling ropes 4 between two adjacent raft frames 2 by using tying ropes 4, and the water temperature is 0-19 ℃ in 11 months per year, clamping kelp seedlings on the kelp seedling ropes 4 for horizontal culture; 25-30 kelp seedlings are clamped on one kelp seedling rope 4, and the length of each kelp seedling is more than 15 cm; the kelp seedlings are hung on the raft frame 2 and are not harvested until the kelp 4 stops growing and the edges of the leaves fall off seriously until the kelp seedlings die; the leaves continuously fall off in the growth process of the kelp to form organic debris which provides bait for the oysters, the oysters filter and eat unicellular algae and the organic debris in the seawater to provide continuous bait for the growth of the oysters, and meanwhile, the excrement of the oysters can also provide nitrogen fertilizer for the growth of the kelp; culturing kelp seedlings again by 11 months in the next year, and repeating ecological culturing of oysters and kelp; the oyster can be harvested when the meat yield of the oysters is more than or equal to 15 percent, and the oysters can be continuously filled into the oyster seedlings through the cultivation cage for cultivation after being harvested.
The growth characteristic of the kelp is that the kelp grows internationally, namely a growth part is formed at the connection part of the handle and the leaf, and the growth part continuously generates new cells to increase the length of the leaf; when the length of the kelp reaches more than 15cm, the leaf tips begin to fall off in different degrees, when the kelp grows to a thin and tender stage of about 1m, the growth speed of the algae is accelerated, the tip fall off is also accelerated, the growth speed of the algae is balanced generally in the last ten days of 5 months, and the fresh weight of the algae is close to the maximum value; with the rise of the water temperature, the growth speed is reduced, the shedding speed is accelerated, the dry weight is increased, and the dry weight reaches the maximum value in the last 6 th month. The maximum temperature of the kelp growth is 20 ℃, when the water temperature rises to more than 20 ℃ in 7 months, the dropping speed of the kelp leaves is increased, and the size of the algae is reduced until the algae completely drop and die. Therefore, the leaves of the kelp are peeled off while growing in the whole growth process.
The invention fully utilizes the growth characteristics of the kelp, and the kelp is hung on the oyster raft frame and is not harvested all the time. In 11 months to 5 months in the next year, the temperature of the seawater is proper, the temperature is generally 0-19 ℃, the kelp 4 normally grows, although the leaf tips fall off, the leaves can continuously grow to be 2-4 meters long until 6-9 months, when the temperature of the seawater reaches more than 20 ℃, the kelp 4 stops growing, and the edges of the leaves fall off seriously until death. Therefore, during the whole growth period of the kelp, the tips of the leaves continuously fall off to generate organic debris, so that continuous high-quality bait is provided for the growth of the oysters, the kelp becomes natural 'slow-release bait', the weight gain of the oysters is promoted, and the quality of oyster products is improved. And cultivating kelp seedlings again in 11 months, and repeating oyster and kelp cultivation and ecological cultivation.
The leaves of the undaria pinnatifida are similar to those of the kelp, and the leaves of the undaria pinnatifida drop while growing, but the proper temperature range for the growth of the undaria pinnatifida is 5-15 ℃, the undaria pinnatifida generally begins to mature in 5 months, the water temperature rises after 6 months, the undaria pinnatifida stops growing, and the leaves drop rapidly until the undaria pinnatifida dies. The high temperature resistance is lower than that of kelp, so the falling duration of the leaves is shorter than that of the kelp.
Therefore, the kelp of the invention can be replaced by the undaria pinnatifida, or the kelp and the undaria pinnatifida are hung and supported simultaneously.
The oyster raft frame should also can keep comparatively lax state for good when the climax in setting up, and can have certain range of floating along with the stormy waves. The rope buckle for binding the float is tied tightly, and the joint of the rope and the raft frame is tied tightly. The cultivation cage is fixed on the raft frame by using a tether and cannot slide left and right.
Deep water net cages can be put near the oyster cultivation sea area for marine fish cultivation, and an ecological system for fish, shellfish and algae mixed cultivation is established.
The following is the experimental data of the patent applicant:
1. and (3) cultivating sea areas: in the south sea area of the breast mountain, the offshore area is 18km, the water area is wide, the ocean current is smooth, the wind wave is small, the water depth is 15 m-25 m, the salinity is about 30 per thousand, and the substrate is a flat sediment substrate. No industrial wastewater, agricultural or domestic sewage is discharged around the culture area, and the water quality meets the regulation of environmental conditions of NY5362-2010 pollution-free food mariculture production places.
2. Culture raft frame and ecological culture
Set up oyster cultivation area 100 mu (per mu sets up 4 raft framves), breed raft frame 400, the main part is by cursory 1, raft frame 2, breed cage 3, stalk rope 5, stake 6 are constituteed, a raft frame 2 is fixed by two sets of stalk ropes 5 and stake 6, it is about 3m ~ 4m deep that stake 6 is squeezed into the sea bed soil layer, stalk rope 5 is tied up in 6 lower extreme half departments of stake, cursory 1 is fixed on raft frame 2 with the tether, make raft frame 2 float on the sea surface.
The length of an oyster cultivation raft frame 2 is about 100m, the number of oyster cultivation cages 3 hung on the raft frame 2 is 80, in 11 months, oyster seedlings (with the body length of 5-7cm and the weight of about 100 g/seedling) are loaded into the cultivation cages 3, the cultivation cages are 14 layers, each layer is loaded with 15 oyster seedlings, each layer is loaded with 210 oyster seedlings, and the weight of each cage is about 21kg; kelp seedling ropes 4 are tied and cultured between two culturing cages 3 on the oyster culturing raft frame 2, each kelp seedling rope 4 clamps and cultures about 25 kelp seedlings, the length of each kelp seedling is more than 15cm, each oyster culturing raft frame 2 can tie and culture 80 kelp seedling ropes, clamp and culture about 2000 kelp seedlings, and the weight of suspended and cultured oyster seedlings is 1680kg.400 raft frames can be used for hanging and culturing 672000kg of oyster seedlings and clamping and culturing 800000 kelp plants. The spacing between the raft frames is about 25m, the spacing between the cultivation cages is about 1.2m, the spacing between the kelp and the fixed point of the cultivation cage is about 0.6m, and the cultivation water layer is about 1 m.
The kelp grows the in-process blade and constantly drops, form organic piece and provide bait for the oyster, the oyster strains unicellular algae and organic piece of eating in the sea water, improve the sea water transparency, be favorable to the kelp to carry out photosynthesis, the excrement of oyster still can provide nitrogen fertilizer for the kelp is grown simultaneously, the photosynthesis of kelp absorbs carbon dioxide and releases oxygen, improve the dissolved oxygen volume in the sea water, be favorable to the growth of oyster, consequently, promote the growth mutually between oyster and the kelp, establish friendly ecosystem.
The kelp is not harvested all the time in the production process of one year and is used as natural 'slow-release bait', and organic debris generated by the falling of the leaves of the kelp provides continuous high-quality bait for the growth of the oysters in the sea area, promotes the weight gain of the oysters and improves the quality of oyster products.
Continuing to culture the kelp 4 in the culture medium until the month of 11, and repeating the oyster culture, the kelp culture and the ecological culture.
3. Daily management
Inspecting the sea every 3-5 days, checking whether the buoys, the raft frames, the culture cages and the like are firm, ensuring the tightness of each raft frame to be consistent, ensuring the production safety, keeping each culture cage on the same water layer, and ensuring the uniform light receiving of the kelp. The buoys are timely supplemented along with the growth of oysters and kelp in the cages, and the phenomenon that the raft frame sinks due to overweight is avoided. Observing weather changes, and before strong wind comes, observing that the buoyancy of the raft frame is not too large, and protecting the raft frame by methods of reducing the buoyancy, pressing stones and the like; after the strong wind, the damaged facilities should be inspected and repaired in time. In the high temperature period and the season of attaching a large amount of attached organisms, the deep water layer should be properly adjusted.
Because the kelp falls off from time to time due to wind wave impact or infirm seedling clamping and the like in the culture sea area, frequent inspection and timely seedling replenishment are needed after seedling hanging.
When the oyster cultivation time exceeds 4 months, the oyster cultivation cages are attached with miscellaneous algae, silt and the like which influence water exchange in the cages or growth space of the oyster is limited after the oyster individual is increased, if the oysters cannot be sold in time, the operation of cage division is carried out, oysters with different specifications are hung in corresponding sea areas in a cage filling mode to continue cultivation, and meanwhile, various attached organisms and enemy organisms such as carnivorous gastropods and crustaceans are removed in the cage division process.
4. Harvesting
The oyster can be harvested when the meat yield of the oysters is more than or equal to 15%, and oyster seedlings thrown in 11 months can be harvested from 12 months and continue to 5 months in the next year. The oysters can be cultivated all the year round, and the oysters can be continuously cultivated after being harvested. The kelp is not harvested all the time, is similar to a seed tree, and supplements the defective kelp seedlings at a proper time.
5. Yield increase
The oysters cultured by the culture method are large in size, high in fertilizer fullness and good in quality, 400 raft frames are arranged for culturing 100 mu of oysters on the sea, each raft frame can produce 3360kg of oysters, the yield per mu is about 13400kg, and each raft frame can produce 2560kg of oysters, the yield per mu is about 10240kg and the yield is increased by 31.25% in the traditional culture method. The oyster product has high quality, high market value and strong competitiveness.
400 raft frames are arranged for 100 mu of oysters in offshore culture, 800000 kelp plants can be hung, the total weight of the kelp is 1600000kg, and the per mu yield is 16000kg according to the average 2kg of each kelp plant in the growth process. According to the method, calculated by that 10kg of kelp is converted into 1kg of oyster meat, the effective conversion rate of the kelp is 50%, 16000kg of kelp can be converted into 800kg of oyster meat, the weight of the oyster meat accounts for about 20% of that of the whole oyster, namely 4000kg of oyster can be converted, and 8000kg of oyster can be fattened when the weight of oyster seedlings reaches one time of the weight of finished oyster.
6. Ecological benefit
According to the ecological breeding method for the oysters and the kelp, 400 raft racks are arranged for 100 mu of oysters in marine breeding, 800000 kelp plants can be hung, the kelp is not harvested all the time, defective kelp seedlings need to be supplemented regularly, and similar to planting trees on the sea, carbon dioxide is absorbed continuously, oxygen is discharged, and a kelp breeding carbon sink can be formed. The average content of carbon in dry weight of the kelp is 31.2%, the total weight of 800000 kelp plants is about 160000kg calculated by average 2kg of each kelp plant, and the dry-fresh ratio of the kelp plants is 1:6, the amount of the kelp can be changed into about 26667kg of dry kelp, namely 8320kg of fixed carbon, and about 29714kg of fixed carbon dioxide.
7. Summary of the invention
According to the method for ecologically culturing the oysters and the kelp, under the condition that the existing scale of oyster culture is not influenced, the oyster culture yield and the product quality are obviously improved, the oyster fattening period is shortened, the cost of manpower, fuel, culture materials and the like is reduced, and the economic benefit is obvious; and a certain amount of kelp carbon sink is formed in kelp cultivation, so that the ecological benefit is remarkable. The method can be popularized in a large area, mobilizes the breeding enthusiasm of fishermen, promotes employment, is beneficial to the healthy and sustainable development of oyster breeding industry, promotes the carbon sink economic development of fishery, can drive the development of related industries such as transportation, processing and trade, and generates good social benefits.
Claims (4)
1. A method for marine ecological culture of oysters and kelp adopts raft type suspension culture, the main body part of the raft type suspension culture consists of floats, raft frames, culture cages, stem ropes and timber piles which are arranged in parallel, each raft frame is fixed by two groups of stem ropes and timber piles, the timber piles are driven into a seabed soil layer, the stem ropes are tied on the timber piles, the floats are fixed on the raft frames by tying ropes so that the raft frames float on the sea surface, the method is characterized in that,
a. the culture cages are hung on the raft frame at intervals by using tying ropes, the distance between every two adjacent culture cages is 1.0-1.5 m, the number of the culture cages is 12-15, and 15-25 oyster seedlings are filled in each layer;
b. fixing kelp seedling ropes on raft frames in the middle of adjacent culture cages on each raft frame by using tying ropes, clamping kelp seedlings on the kelp seedling ropes in 11 months per year at the water temperature of 0-19 ℃, and performing vertical culture, or fixing the kelp seedling ropes between two adjacent raft frames by using tying ropes, clamping kelp seedlings on the kelp seedling ropes in 11 months per year at the water temperature of 0-19 ℃, and performing horizontal culture;
c. 25-30 kelp seedlings are clamped on one kelp seedling rope, and the length of each kelp seedling is more than 15 cm;
d. the kelp seedlings are hung on a raft frame and are not harvested until the kelp stops growing and the edges of the leaves fall off seriously until the kelp seedlings die;
e. the leaves continuously fall off in the growth process of the kelp to form organic debris which provides bait for the oysters, the oysters filter and eat unicellular algae and the organic debris in the seawater to provide continuous bait for the growth of the oysters, and meanwhile, the excrement of the oysters can also provide nitrogen fertilizer for the growth of the kelp;
f. culturing kelp seedlings again by 11 months in the next year, and repeating ecological culturing of oysters and kelp;
g. when the meat yield of the oysters is more than or equal to 15 percent, the oysters can be harvested, and the oysters can be continuously filled into oyster seedlings through a cultivation cage for cultivation after being harvested.
2. A marine ecological method for culturing oysters and sea tangles according to claim 1, wherein the raft frame is arranged in a way that the raft is vertical to the flow direction of seawater.
3. The marine ecological breeding method for oysters and kelp according to claim 1, wherein the effective length of the raft frame is 85-95 m, and the raft interval is more than or equal to 12m.
4. The marine ecological breeding method of oysters and kelp as claimed in claim 1, wherein the distance between the kelp seedling rope and the fixed point of the breeding cage is 0.5-0.75 m.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117204379A (en) * | 2023-11-09 | 2023-12-12 | 海南大学三亚研究院 | Carbon sink increasing method based on oyster-undaria pinnatifida mixed culture mode |
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