CN201663859U

CN201663859U - Semi-submerged semi-suspended type floating raft-cage device for culturing sea cucumbers

Info

Publication number: CN201663859U
Application number: CN2009202665165U
Authority: CN
Inventors: 敖志辉
Original assignee: 敖志辉
Current assignee: Dalian long dragon aquatic products technology promotion Co., Ltd.
Priority date: 2008-10-28
Filing date: 2009-10-27
Publication date: 2010-12-08
Anticipated expiration: 2019-10-27
Also published as: CN101444193B; CN201938196U; CN101444193A

Abstract

The utility model discloses a semi-submerged semi-suspended type floating raft cage device for culturing sea cucumbers, which relates to fishery seawater floating raft cage culture and utilizes the conventional culture tools such as floating rafts, cages and the like for culturing seashells to culture sea cucumbers through little adjustment and modification. Long-term and large-scale high-density single variety seashell culture results in reduction of seawater nutrient substances, flow retardance and frequent occurrence of diseases and pests in part of aquaculture areas in Liaoning Province and the like, and unexpected death of large-area seashells results in increase of seashell culture cost and risk increase; and in the device for culturing semi-submerged semi-suspended type floating raft cage sea cucumber, a cage for culturing seashells is horizontally, transversely hung on raft bodies of two floating rafts, the total length of a buoyancy rope plus a suspending rope (at the time of low tide) is adjusted to larger than the distance between the sea level and the seabed, and the device is formed; the device can lead the cage to be totally submerged into the sea at low tide and to totally separate from the seabed at full tide or spring tide. The device has the benefits of prevention of environment pollution, energy conservation, labor conservation and greatly-increased efficiency, and provides new technology and development direction for rotational culture and mixed culture of the sea cucumbers with seashells.

Description

A kind of device of breeding sea cucumber in bathyal half-hanging buoyant raft net cage

Technical field

The utility model relates to fishery seawater buoyancy raft net cage culture, is that the buoyant raft that utilizes existing cultivated shellfish, cylinder mould etc. are cultured utensil, changes by less adjustment, cultures sea cucumber in sea area or other sea area with good conditionsi of cultivated shellfish.

Technical background

China marine site is vast, and the mariculture development is swift and violent, and cultured output occupies first of the world, and wherein shellfish culture accounts for more than 75% of gross yield.The shellfish culture of long-term large scale and high density single variety, culture the marine site in major parts such as Liaoning and cause disruption of ecological balance, the breed cylinder mould of this large scale and high density is given mussel and is adhered to and life condition for main fouling organism provides, cause that seawater nutrient descends, current are smooth, severe contamination is cultured the sea area, cause damage by disease and insect to take place frequently.Low and the large-area sudden death of quality shellfish improves the marine shellfish aquaculture cost, and risk increases.Changhai County, Liaoning Province, shellfish culture base with China's maximum is an example, 1-6 month seawater aquaculture output had fallen 33.8% on a year-on-year basis in 2008, the smooth shellfish of the shrimp second half year is cultured lethality and surpasses 40%, the smooth shellfish cumulative mortality of shrimp (to October) in 2009 surpasses 80%, and sustainable development has proposed stern challenge to the ecotope of reality to shellfish culture.

Summary of the invention

The adjustment breed variety of how to prevent and treat environmental pollution, economize on resources, suiting measures to local conditions utilizes existing marine resources, and becoming inferior position is the new problem that mariculture industry faces into advantage.The utility model provides a kind of device of breeding sea cucumber in bathyal half-hanging buoyant raft net cage, and it can make full use of existing resource and realize mariculture energy-saving and environmental protection, saving of labor, under the prerequisite of sustainable development, and significantly synergy.

The technical scheme that the utility model technical solution problem is adopted is: will have now on one's body the horizontal raft that hangs over two buoyant rafts of the cylinder mould level of cultivated shellfish, the total length (in the time of low water) that the buoyancy rope is added lifting rope is adjusted to greater than the distance of sea to the seabed, form a kind of device, this device makes cylinder mould can sink to the seabed fully in the time of low water, can break away from the seabed fully when full sea or spring tide.

The beneficial effects of the utility model are: the control environmental pollution, make rational use of resources, and saving of labor, energy-conservation promotes to culture the marine site ecological balance.Experiment shows, culture sea cucumber with this device, its survival rate all exceeds much than other any way (no bait seawater holothruian cultures), its economic benefit is more than the several times of shellfish culture, produced unforeseeable technique effect, for shellfish culture and holothruian cultures samsara from now on alternately development or mixed breed new technical scheme is provided, represented a kind of development trend of new technology.

Description of drawings

Fig. 1 is when different tidal level, the residing location status schematic diagram of cylinder mould.(1) be that buoyant spheres, (2) are that buoyancy rope, (3) are that raft body, (4) are that lifting rope, (5) are cylinder moulds.A, B represent the position on full sea, time of low water sea respectively, and C represents the position in seabed.

Fig. 1-1 represents the time of low water, and cylinder mould sinks to the state in seabed fully.

When Fig. 1-2 represented full sea, cylinder mould broke away from the state in seabed fully.

Embodiment

To have now on one's body the horizontal raft that hangs over two buoyant rafts of the cylinder mould level of cultivated shellfish by above-mentioned Fig. 1, the total length (in the time of low water) that the buoyancy rope is added lifting rope is adjusted to greater than the distance of sea to the seabed, make cylinder mould can sink to seabed (as Fig. 1-1) fully, when full sea, can break away from seabed (as Fig. 1-2) fully in the time of low water.

The concrete length of buoyancy rope and lifting rope is relevant with the quality in seabed, and buoyancy rope and lifting rope are short at the bottom of the silt, prevent that cylinder mould from being sticked by silt, otherwise husky mud spacer screen cage is difficult for can suitably being increased the length of buoyancy rope and lifting rope by sunken.Containing the needed a large number of nutrients of sea cucumber in the silt, is the main food source of sea cucumber growth, should guarantee to allow cylinder mould how stop in the seabed under the prerequisite that cylinder mould is not sticked by silt as much as possible.

Under the effect of trend, cylinder mould always is kept in motion in the seabed and twice change every day direction of motion, the most of the time of motion is only relevant with trend, not influenced by the too big of raft body, cylinder mould is also not necessarily perpendicular to the raft body, this provides condition for the large-area food that obtains of sea cucumber, and this motion can prevent that also cylinder mould from being sticked by silt.Cylinder mould is not all to break away from the seabed every day, and only otherwise sticked by silt, the time that cylinder mould stops in the seabed can prolong a couple of days, and the news of adhering to living just break away from the seabed when rising by spring tide, allow trend rinse out sea cucumber too much on the cylinder mould and unwanted foreign material.Cylinder mould is not only done horizontal movement in the seabed, also can move up and down under the effect of wave, and when wave formed on the sea, buoyant spheres can raise by wave, and this motion also can make cylinder mould moment disengaging seabed sometimes.

According to the individual size of culturing sea cucumber, adjust the distance between the cylinder mould dividing plate, select the suitable etting of mesh, seedling can not be escaped from from mesh, harmful natural enemy can not enter cylinder mould from mesh.

In each cylinder mould dividing plate, place (shabby mesh bag) net sheet, be convenient to that sea cucumber adheres to and can stop undue sea cucumber, the strenuous exercise that alleviates cylinder mould of directly impacting of trend.As long-term breed (forming), can regularly clean the sea cucumber excreta on (mesh bag) net sheet.

Determine cultivation density according to the sea area natural environment, there is the breed sea area of enriching food resource in the seabed, cultivation density more greatly, otherwise then littler.General sea area through long-term shellfish culture, the seabed food resource is all abundanter, all is the fabulous food of sea cucumber as each bacterioid in the silt, various animals and plants corpse chip, shell fragment etc., and this type of is cultured each raft of sea area and hangs 50-60 cylinder mould.Under the trend influence, cylinder mould moves in the seabed, prevent that cylinder mould and cylinder mould from twining mutually, and the length of lifting rope is short as far as possible.

To select not bait throwing in be condition, children's ginseng that breed in the middle of marine, about the long 2-3cm of body, and putting 5-6 head (15 layers of dividing plate) every plate does not have bait throwing in and culture, and the length of adjustment buoyancy rope in good time in breeding process can promote that sea cucumber grows fast.Culturing the sea area with the smooth shellfish of shrimp is example, and the general depth of water is all more than 10 meters, and there is a fixed difference difference in Various Seasonal sea and seabed, and the summer high-temperature phase much more as far as possible to allow cylinder mould stop in the seabed.Spring and early summer marine organisms active, water temperature suitable, cylinder mould can be improved, and has a mind to allow various marine organisms such as young shellfish attached on the cylinder mould, replenishes how natural organic nutrient substance to sea cucumber.

If select seedling under autumn end, can opening cylinder mould sky be hung on the buoyant raft in summer, allow and overwork attachment inside and outside the cylinder mould, to the certain natural organic bait of sea cucumber deposit, but during toward the interior dress of cylinder mould seedling, harmful animal things such as the fish in the cylinder mould, crab, starfish be removed, behind the sea cucumber seedling of packing into, cylinder mould is sewed up with cotton rope, can effectively be prevented the invasion of sea cucumber harmful animals such as fish, crab and starfish.

Sea cucumber is an omnivore, can hang oneself at the lifting rope at cylinder mould top in marine site with good conditionsi and to support some green plantss, as sea-tangle, undaria pinnitafida etc. (specifically can with reference to the cultural method of sea-tangle and undaria pinnitafida), select to grow into suitable opportunity sea-tangle about 1 meter or undaria pinnitafida and connect rope (band root) and be transplanted on the lifting rope at cylinder mould top, and allow the blade in the growth can contact the close cylinder mould that arrives as much as possible.To more shallow, be fit to the marine site of sargassum, the growth of mouse tail algae, can be suitably like sargassum and this two plant species of mouse tail algae of eating the bottom culture sea cucumber.

Holothruian cultures through one-period (2-3), the marine eco-environment is improved, the nutriment that shellfish needs is restored, again a part of platform raft is implemented shellfish culture, in certain sea area, realize sea cucumber and shellfish with supporting, can under the prerequisite of marine ecology balance, make the healthy nuisanceless growth of two kinds of material cultures like this, reach resource and rationally utilize, to promote the sustainable development of seawater buoyancy raft net cage culture with the breed utensil.Experiment showed, that the economic benefit that produces with this device breed sea cucumber is more than the several times of buoyant raft shellfish culture, support temporarily in the middle of being particularly suitable for.With the area, Dalian is example, mid-October, following 2-3 centimetre sea cucumber seedling can grow to 4-5 centimetre the next year 5-6 month, owing to there is not harmful animal (this time period do not have immature harmful organisms can enter cylinder mould sea cucumber is constituted a threat to), the seabed nutriment is abundant, water temperature is fit to the sea cucumber growth, and survival rate can reach more than the 90%-95%, broadcasts or stable breeding at the bottom of can directly going to the seabed this moment, the centre does not need any manual operation and any expense, and the suitable operation raft of whenever organizing a performance can have a net gain 5000 yuan.

As continue to form, need the bigger cylinder mould of fall the cage replacings mesh also to clean interior (mesh bag) net sheet of cylinder mould, in all processes of cage, particularly the cylinder mould exiting water process must slowly carry out, handle with care, must not too startle sea cucumber.In a single day sea cucumber is subjected to serious scaring, and the intestines that can spue cause poor growth in the future.

Preventing and kill off of stained thing will consume lot of manpower and material resources on the shellfish culture cylinder mould, annual artificial cage and manually the cleaning on the bank that will carry out 2-3 time between mature stage to cylinder mould, stained thing can cause severe contamination to the sea area in all processes that cleans, ship repeatedly comes and goes operation need consume a large amount of diesel oil, holothruian cultures then antithesis, attached to the stained thing on the cylinder mould is the fabulous natural bait of sea cucumber, need not cylinder mould is manually cleaned, and greatly reduces aquaculture cost.

This technical scheme is compared with single shellfish buoyancy raft net cage culture, can prevent and treat environmental pollution, and energy-conservation, synergy has produced unforeseeable technique effect, has represented a kind of development trend of new technology.

Claims

1. the device of a breeding sea cucumber in bathyal half-hanging buoyant raft net cage, on one's body the horizontal raft that hangs over two buoyant rafts of the cylinder mould level of existing cultivated shellfish, the total length (in the time of low water) that the buoyancy rope is added lifting rope is adjusted to greater than the distance of sea to the seabed, form a kind of device, it is characterized in that: this device can make cylinder mould sink to the seabed fully in the time of low water, can make cylinder mould break away from the seabed fully when full sea or spring tide.