CN101032233A

CN101032233A - Separated device of raising sea cucumber in cage

Info

Publication number: CN101032233A
Application number: CNA2007100138331A
Authority: CN
Inventors: 曲克明; 刘立波; 韩德山; 胡振峨; 郭学政; 侯正大; 徐勇; 马德林
Original assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Current assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Priority date: 2007-03-20
Filing date: 2007-03-20
Publication date: 2007-09-12
Anticipated expiration: 2027-03-20
Also published as: CN101032233B

Abstract

The Stichopus japonicus cultivating separate mesh cage apparatus has the structure comprising a frame, mesh sheets and mesh bags. The frame is made of PVC pipes connected with elbows and T-pieces; the mesh sheets are hung inside the frame; and the mesh bags made of polyethylene net are cylinders around the frame and have ends tied with nylon ropes. The separate mesh cage apparatus provides closed Stichopus japonicus growing space without effects of harmful environment factors and enemy organism invasion, and has high Stichopus japonicus survival rate and yield.

Description

Separated device of raising sea cucumber in cage

Affiliated technical field:

The invention belongs to aquaculture technology, is a kind of separated device of raising sea cucumber in cage.

Background technology:

At present, the northern area of China apostichopus japonicus culture scale enlarges day by day, and breeding way is also broadcast propagation at the bottom of initial sea area, develops into the intertidal zone cay and builds the pond, and transform the pond culture in shrimp pond later on.The advantage of broadcasting propagation at the bottom of the sea area is that breeding environment is a natural surroundings, and the required bait of stichopus japonicus is abundant, fast growth, and shortcoming is a little less than the ability of withstanding natural calamities, and survival rate and the utilization percent of stichopus japonicus are low, and utilization percent is generally below 5%; The advantage that the intertidal zone cay is built the pond is that quantity of exchanged water is big, and breeding environment is near natural surroundings, and survival rate can reach more than 50%, shortcoming is to take sea area, a large amount of intertidal zone, and the destruction to natural landscape is serious, and this kind breed pattern is subjected to strict restriction, therefore can't satisfy the demand of apostichopus japonicus culture; The advantage of pond culture is can artificially control the quantity of exchanged water and the pond depth of water in breeding process, can manually throw something and feed bait to replenish stichopus japonicus bait, can high-density breeding, shortcoming is that numerous unfavorable stichopus japonicus survival environment factors is arranged in the pond culture environment: as at the bottom of harmful organisms, the rare soft pond, the cave of the class of living in caves biology etc., the existence that is constantly endangering stichopus japonicus; In addition, the concealment thing of arranging in the pond (as reefglider), its kind is also multifarious, and mode differs, and the survival rate height of culturing stichopus japonicus does not wait, and is generally lower, and high-servival rate also only has about 30%.Above breeding way, serious restriction the development of this industry.

Summary of the invention:

The objective of the invention is to design a device of raising sea cucumber, adopt cellular-type cage culture method, make the broad three-dimensional living space of a sealing, get rid of harm stichopus japonicus survival environment factor, improve the holothruian cultures survival rate, guarantee cultured output.

The present invention realizes by following technical scheme: his structure is to be made of framework, net sheet and mesh bag.Framework is a main body of the present invention, uses the PVC plastic tube of Φ 2cm, and by high 0.75m, the size of each 1m of length and width forms by elbow and threeway splicing; The net sheet is a bolting silk net sheet, is provided with 7, is to form by the impartial etting that cuts of the size of 0.8m * 1m, becomes vertically uniform hanging in the framework of 55 ° of-75 ° of inclined-planes; Mesh bag is the tubular mesh bag, and adopting mesh is the polyethylene knotless net clothing of 0.8cm, is that 3.5m is sized to tubular by long 2.5m, circumference, is coated on the framework, and the mesh bag two ends use nylon rope to prick the knot sealing.

The present invention and background technology contrast have following characteristics:

1, the cellular-type net cage has completely cut off the contact of other biology in the outer overall situation of thorn participation case, can fundamentally eliminate the invasion and attack of harmful organisms, and survival rate is greatly improved, and survival rate can reach more than 95%.

2, apostichopus japonicus culture density is higher, and per mu yield can reach between 400～500 jin, a traditional unit of weight, can realize the high-density breeding of stichopus japonicus.

3, stichopus japonicus is a kind of to the highstrung breed species of harmful substance in the water body, as ammonia nitrogen, nitrite, hydrogen sulphide etc.Because be provided with the bolting silk partition in the cellular-type net cage, upper and lower mediastinum is tilting, be that stichopus japonicus ingests, movable usefulness adhere to implements, when worsening appearred in water quality at the bottom of the pond, the feeding activity of stichopus japonicus can move up and down.Climb to the net sheet in, the upper strata, thereby can avoid its evil.

4, do not increase the breeding production cost, the cost of making this net cage arrange to calculate by 100 every mu about about 30 yuan, and about 3000 yuan of every mu input is suitable with the input of concealment thing (as reefglider) in other pattern.

5, can realize the comprehensive utilization in pond,, thereby not influence in the pond and put other kind in a suitable place to breed,, improve the comprehensive utilization value and the economic benefit in pond as fish, shrimps etc. because net cage has isolated effect that contacts with other biology.

6, expanded the waters of culturing stichopus japonicus, for the shale pond, particularly the pond also is suitable for apostichopus japonicus culture at the bottom of the ooze matter pond.

Description of drawings:

Fig. 1: concrete structure schematic diagram of the present invention:

1-is cursory, 2-floats well rope, 3-lifting rope, 4-net sheet, 5-framework, 6-mesh bag.

Embodiment:

Be described in detail concrete structure of the present invention and using method below by fact Example:

1, structure content:

Cellular-type apostichopus japonicus culture net cage is a rectangle, and his structure is to be made of framework 5, net sheet 4 and mesh bag 6.Framework 5 is to use the PVC plastic tube of Φ 2cm, and by high 0.75m, the size of each 1m of length and width is by bonding forming such as elbow, threeway, glue; Net sheet 4 is 40 order nylon bolting silks, cuts into impartial net sheet by the size of 0.8m * 1m, becomes vertical uniform the hanging in the framework 5 in 65 ° of inclined-planes, is provided with 7 bolting silk net sheets 4 in each framework 5, space segmentation in it is become the little space of 8 equalizations.Mesh bag 6 is the polyethylene knotless net of mesh 0.8cm, is that 3.5m is sized to tubular by long 2.5m, circumference, is coated on the framework 5.After seedling was put into it, mesh bag 6 two ends used nylon rope to seal in a down-to-earth manner.

2, using method:

Use 360 plying nylon ropes to make floating well rope 2, floating well rope 2 two ends are fixed on the Chi Ba both sides by timber, and the principle of using by per two net cages one cursory 1 is strapped in the plastics of diameter 30cm cursory 1 on the floating well rope 2, the position of plastics cursory 1 be in net cage directly over.

Net cage is pressed in the case following current of nylon bolting silk in the principle of current, and with 1 meter spacing, being arranged in order embarks on journey is hung under the floating well rope 2.The length of lifting rope 3 is decided according to the depth of water, generally with during lowest water level, is advisable at the bottom of making net cage leave the pond.Lifting rope 3 adopts the method for net cage both sides hanging, to guarantee that net cage is rectified.

The line-spacing of framework 5 is 3m, and such discharging can lay 100 above-mentioned net cages in 1 mu of pond.

Net cage lays end, and through washing away for several times, advances Man Chishui.Treat growth on the nylon mesh tulle sheet 4 in the net cage and during with abundant benthonic food organisms, can put seedling.For ease of the operation, put Miao Qianke with a pond water water level submergence net cage half.After putting seedling and finishing, mesh bag 6 two ends are sealed in a down-to-earth manner.

3, implementation result:

We make 480 in cellular-type net cage altogether experimental session, arrange 100 net cages by every mu, and each net cage is put the density of 20 of seedlings, on May 20th, 2006, throw in: specification is 2200 of the seedlings of 20/500g, 110 casees; Throw in: specification is 7400 in the seed of 36/500g, 370 casees.In by the end of November, 2006 the breed stichopus japonicus of 110 net cages is all gathered in the crops, gather in the crops the one-tenth of per 4.7/500g altogether and join 225 kilograms, 31500 yuan of the output values (70 yuan/jin of unit prices), on average each net cage harvest ginseng is 4.09 jin, a traditional unit of weight, cultures survival rate up to 96%.Stichopus japonicus in other 370 net cages of sampling weighing, each case confidential reference items weighs 2.5 jin, a traditional unit of weight, and specification is average 8/500g.This batch plan is waited until next year and is gathered in the crops by the end of May.

4, output and performance analysis

Lay 100 net cages by every mu of water surface, throwing in specification is 20/500g seed, and every mu of breed sea cucumber survival rate reaches 96% then, become 4.7/500g of ginseng specification, each net cage produces 4.09 jin of ginsengs, and gross yield is 409 jin, a traditional unit of weight, realizes 28630 yuan of the output values (70 yuan of unit prices/500g).

Claims

1, a kind of separated device of raising sea cucumber in cage, the structure that it is characterized in that him are to be made of framework, net sheet and mesh bag; Framework is to use the PVC plastic tube of Φ 2cm, and by high 0.75m, the size of each 1m of length and width forms by elbow and threeway splicing; The net sheet is a bolting silk net sheet, is provided with 7, is to form by the impartial etting that cuts of the size of 0.8m * 1m, becomes vertically uniform hanging in the framework of 55 ° of-75 ° of inclined-planes; Mesh bag is the tubular mesh bag, and adopting mesh is the polyethylene knotless net clothing of 0.8cm, is that 3.5m is sized to tubular by long 2.5m, circumference, is coated on the framework, and the knot sealing is pricked with nylon rope in the mesh bag two ends.