CN108260568A - The Penaeus Vannmei classification harvesting method of artificial breeding - Google Patents
The Penaeus Vannmei classification harvesting method of artificial breeding Download PDFInfo
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- CN108260568A CN108260568A CN201810235871.XA CN201810235871A CN108260568A CN 108260568 A CN108260568 A CN 108260568A CN 201810235871 A CN201810235871 A CN 201810235871A CN 108260568 A CN108260568 A CN 108260568A
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- net cage
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- 241000927735 Penaeus Species 0.000 title claims abstract description 49
- 238000003306 harvesting Methods 0.000 title claims abstract description 28
- 238000009395 breeding Methods 0.000 title claims abstract description 18
- 230000001488 breeding effect Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 241000238557 Decapoda Species 0.000 claims abstract description 153
- 238000009360 aquaculture Methods 0.000 claims abstract description 35
- 244000144974 aquaculture Species 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000012258 culturing Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 7
- 241000238553 Litopenaeus vannamei Species 0.000 description 3
- 241000238421 Arthropoda Species 0.000 description 2
- 241000238550 Penaeidae Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000366 juvenile effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 241000238424 Crustacea Species 0.000 description 1
- 208000035240 Disease Resistance Diseases 0.000 description 1
- 241001149925 Fenneropenaeus indicus Species 0.000 description 1
- 241000530452 Litopenaeus Species 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Classifications
-
- 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
- A01K69/00—Stationary catching devices
- A01K69/06—Traps
- A01K69/08—Rigid traps, e.g. lobster pots
-
- 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
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- 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
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
-
- 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
- A01K61/90—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination
-
- 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)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Marine Sciences & Fisheries (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
A kind of Penaeus Vannmei classification harvesting method of artificial breeding, step：Preparation actively collects shrimp device；When the culturing time of the Penaeus Vannmei in aquaculture pond reaches 55 65 days, shrimp device input aquaculture pond will actively be collected, net cage is made to lead under the water surface that shrimp mouthful is located in aquaculture pond, and semi-submersible type floats frame and actively collects the top of shrimp bellows leans out the water surface, when the Penaeus Vannmei in aquaculture pond leads shrimp mouthful into after actively collecting shrimp net cage intracavitary through leading shrimp cage and net cage successively, the Penaeus Vannmei of net cage mesh less than a diameter of 2.7cm or 3cm, which is swum out of, actively collects shrimp net cage chamber return aquaculture pond, continue to cultivate, the Penaeus Vannmei of net cage mesh more than a diameter of 2.7cm or 3cm, which is trapped within, actively to be collected shrimp net cage intracavitary and is put on sale for fishing for；When the quantity of the Penaeus Vannmei in aquaculture pond is reduced, mended to aquaculture pond and throw Penaeus Vannmei seedling and embody gradient cultivation and gradient harvest.Meet the effect that classification harvest requires and the gradient of continuous stubble cultivates.
Description
Technical field
The invention belongs to aquatic products Fishing technology fields, and in particular to a kind of Penaeus Vannmei classification harvest of artificial breeding
Method.
Background technology
Aforementioned Penaeus Vannmei(Penaeus vannamei) scientific name for all Na Shi prawns, be commonly called as white limb shrimp, white right
Shrimp, Penaeus vannamei etc. belong to Arthropoda (Arthropoda), Crustachia (Crustacea), Decapoda (Decapoda), trip
Suborder of swimming (Natantia), Penaeidae (Penaeidae), Penaeus (Penaeus), Lito-penaeus subgenus, are wide Wen Guang
Salt torrid zone shrimps can be grown under the conditions of 18-32 DEG C of water temperature, salinity 1-40 ‰；Its exactly like Chinese prawn, Mo Ji pairs
Shrimp, adult longest is up to 24cm, and crust is relatively thin, and normal body colour is shallow cinerous, and whole body does not have speckle.Step is in often chalk shape,
Therefore having the title of white limb shrimp, and delicious meat, processing dressing percentage may be up to 67%, have very high economic value.
Penaeus Vannmei is one of highest three big shrimps of world today's cultured output, originates in South America pacific rim
Marine site, Institute of Oceanology of the Chinese Academy of Sciences professor Zhang Weiquan take the lead in introducing this shrimp by the U.S., and nursery pass was breached in 1992,
It breaks through low salinity stocking within 2000 to close, desalination cultivation can be carried out in hinterland.At present China Guangdong, Guangxi, Fujian, Hainan,
Jiangsu, Zhejiang, Shandong, Hebei etc. save or autonomous region gradually promotes and cultivates a kind of this excellent breed variety.
Penaeus Vannmei growth is fast, and disease resistance is strong, as the main shrimp species of China's prawn culturing, aquaculture model
5-8Kg/ cubic metres are up to from pond culture to high density industrial aquaculture, industrial aquaculture yield is developed to.
Since the shrimps speed of growth is inconsistent, with batch shrimp seedling put in a suitable place to breed, difference in size is very big after a certain period of time, if be not added with
It distinguishes ground and carries out disposable fishing comprehensively and harvest, then the specification quality for the product that on the one hand can influence to be put on sale；On the other hand meeting
Cultured output is influenced due to disconnected stubble.In particular, with the popularization of high-density breeding pattern, how to be harvested in time from artificial breeding pond
Reach the commercial sized prawn of listing specification（That is finished product shrimp）The shrimp that listing specification has not yet been reached is made still to be retained in aquaculture pond simultaneously to continue
The classification harvest problem of growth suffers from industry always, and technical solution described below is to generate in this background
's.
Invention content
The task of the present invention is that the Penaeus Vannmei for providing a kind of artificial breeding is classified harvesting method, and this method can be effective
Ground harvest reaches the finished product Penaeus Vannmei of listing specification and the Penaeus Vannmei that listing specification has not yet been reached is made to continue to be retained in
It is grown in aquaculture pond and uses and embody continual gradient culture efficiency and improve culture efficiency.
The task of the present invention is in this way to complete, a kind of Penaeus Vannmei classification harvesting method of artificial breeding, including
Following steps：
A) preparation-actively collect shrimp device, this actively collects shrimp device and floats that frame, one actively collect shrimp net cage and one group is led shrimp by a semi-submersible type
Cage forms, and actively collects shrimp net cage and is arranged on semi-submersible type and floats in frame, which forms opening, and surrounding and
Closing is formed on bottom, and actively collects the top of shrimp net cage and lower part is floated frame with semi-submersible type and fixed, and is actively collecting shrimp net cage
Side offers a net cage and leads shrimp mouthful, one group lead in shrimp cage it is first lead shrimp cage the position that shrimp mouthful is led corresponding to net cage with
Actively collect the connection of shrimp net cage, and one group of remaining led in shrimp cage leads shrimp cage and recycles connection in a manner of end to end each other,
Wherein：The active collection shrimp net cage is woven into the hollow out columnar structure with net cage mesh by strand, the net cage mesh it is a diameter of
2.7cm or 3cm；
B it) throws and catches, it, will be by step A when the culturing time of the Penaeus Vannmei in aquaculture pond reaches 55-65 days）Obtained active
Collect shrimp device and put into the aquaculture pond, and the net cage is made to lead under the water surface that shrimp mouthful is located in aquaculture pond, and the partly latent
Formula, which floats frame and actively collects the top of shrimp bellows, leans out the water surface, when the Penaeus Vannmei in aquaculture pond is led successively through described one group
Shrimp cage and the net cage are led after shrimp mouthful enters the active collection shrimp net cage intracavitary for actively collecting shrimp net cage, a diameter of less than described
The Penaeus Vannmei of the net cage mesh of 2.7cm or 3cm, which is swum out of, actively collects shrimp net cage chamber return aquaculture pond, continues cultivation growth, and
The Penaeus Vannmei of net cage mesh more than a diameter of 2.7cm or 3cm, which is trapped within, actively to be collected shrimp net cage intracavitary and is put on sale for fishing for；
C）Shrimp species are supplemented, through step B）Throw catch and when the Penaeus Vannmei in the aquaculture pond quantity reduce when, to aquaculture pond
It mends and throws Penaeus Vannmei seedling and use and embody gradient cultivation and gradient harvest.
In the specific embodiment of the present invention, the semi-submersible type is floated frame by a rectangular box and is plugged on respectively
Each root cutting composition of the four corners of rectangular box, a cutting hole, cutting are respectively offered in the four corners of rectangular box
It is limited with the inserting of cutting hole and the bolt by being inserted in cutting, and bolt is supported on rectangular box towards upper side table
Face, the upper end of cutting are stretched over the top of rectangular box；It is respectively fixed in the four corners of the upper edge of the active collection shrimp net cage
One overhanging cable, and the four corners on the bottom edge for actively collecting shrimp net cage are respectively fixed with traction rope, overhanging cable with it is described
The top connection of cutting, and lower traction rope is connect with the bottom of the cutting, the net cage leads a diameter of 25-30cm of shrimp mouthful.
In another specific embodiment of the present invention, the rectangular box and the cutting are by wooden material
Material, mao bamboon or metal tube are made and when rectangular box and cutting are metal tube, a floating ball are set in the upper end of cutting.
In another specific embodiment of the present invention, an overhanging cable is offered at the top of the cutting and is hung even
Access slot, and traction rope is offered in the bottom of cutting and hangs link slot, the overhanging cable is hung even with overhanging cable
Access slot hangs connection, and the lower traction rope with lower traction rope is hung link slot and hung and connect.
In another specific embodiment of the present invention, the length of side of the rectangular box is 1.6m, the height of the cutting
It spends for 1.5-1.8m, and it is 0.3m that the upper end of cutting, which is stretched over the degree of the top of rectangular box,；The active collection shrimp net cage
The length of side for 1.5m, be highly 1.2m, the top for actively integrating shrimp net cage leans out the degree of the water surface as 0.3m.
In the present invention there are one in specific embodiment, lead shrimp cage for described one group and respectively include a cage net cover the
One support ring, second support ring of cage net cover, a cage net cover and a cage wing set, cage net cover are fixed on cage net cover
Between first, second support ring, the adjacent cage net cover for leading shrimp cage passes through the first support ring of cage net cover and cage net cover
Second support ring connects from beginning to end each other, and first the first support ring of cage net cover for leading shrimp cage is led corresponding to the net cage
The position of shrimp mouthful connect with the active collection shrimp net cage, cage wing set towards one end of the second support ring of cage net cover and
The center connection of cage filter, and one end of cage wing set towards the cage net cover chamber of cage net cover is stretched over cage net cover
Intracavitary, the edge position of cage filter are connect with the second support ring of cage net cover, the cage net cover chamber with it is described
Actively collect shrimp net cage chamber to communicate and a diameter of 25-30cm of cage net cover chamber.
In a still more specific embodiment of the invention, offer ground at least one side of the cage net cover
Cage net cover leads shrimp mouthful.
The present invention's and then in a specific embodiment, the cage net cover is woven by strand with cage net
Cover the hollow out columnar structure of mesh.
In yet a further embodiment of the present invention a diameter of 2.7cm of the cage net cover mesh or
3cm。
Technical solution provided by the invention has technical effect that：As a result of floating frame by semi-submersible type, actively collect shrimp net
Case and one group of active collection shrimp device for leading shrimp cage composition, in being devoted aquaculture pond when harvesting finished product shrimp, for finished product shrimp
Shrimp cage is led through one group enter and actively collect the active collection shrimp net cage intracavitary of shrimp net cage, and the South America that finished product shrimp specification has not yet been reached is white
Prawn, which can then drill out, actively collects shrimp net cage back to continuing cultivation growth in aquaculture pond, thus can meet and Penaeus Vannmei is divided
Grade harvest requirement；Due to filling into Penaeus Vannmei seedling into aquaculture pond while being classified and harvesting, thus continuous stubble can be met
Gradient cultivation effect.
Description of the drawings
Fig. 1 is first embodiment of the present invention structure chart.
Fig. 2 is the schematic diagram of Fig. 1.
Fig. 3 one group of detailed structure view for leading shrimp cage shown in FIG. 1.
Fig. 4 is second embodiment of the present invention structure chart.
Specific embodiment
Embodiment 1：
Fig. 1 to Fig. 3 is referred to, artificial breeding Penaeus Vannmei classification harvesting method provided by the invention includes the following steps：
A) preparation-actively collect shrimp device, this actively collects shrimp device and floats that frame 1, one actively collects shrimp net cage 2 and one group is led by a semi-submersible type
Shrimp cage 3 forms, and actively collects shrimp net cage 2 and is arranged on semi-submersible type and floats in frame 1, which forms opening, and
Closing is formed on surrounding and bottom, and actively collect the top of shrimp net cage 2 and lower part is floated frame 1 with semi-submersible type and fixed, in actively collection
The side of shrimp net cage 2 offers a net cage and leads shrimp mouthful 21, and one group of first shrimp cage of leading led in shrimp cage 3 is led corresponding to net cage
The position of shrimp mouthful 21 is connect with actively collecting shrimp net cage 2, and one group of remaining led in shrimp cage 3 leads shrimp cage to join end to end each other
Mode recycle connection, wherein：Aforementioned active collection shrimp net cage 2 is woven into the hollow out with net cage mesh 22 by strand such as 6 strands
Columnar structure, a diameter of 2.7cm or 3cm of the net cage mesh 22；
B it) throws and catches（Also can claim to harvest）, treat that the culturing time of the Penaeus Vannmei in aquaculture pond reaches 55-65 days（The present embodiment is excellent
It chooses 60 days）When, it will be by step A）Obtained active collection shrimp device puts into aforementioned aquaculture pond, and aforementioned net cage is made to lead shrimp mouthful 21
Under the water surface 4 in aquaculture pond, and aforementioned semi-submersible type floats frame 1 and actively collects the top of shrimp bellows 2 leans out the water surface, when supporting
Grow that the Penaeus Vannmei in pond leads shrimp cage 3 through aforementioned one group successively and aforementioned net cage is led shrimp mouthful 21 and entered and actively collects shrimp net
After the active collection shrimp net cage intracavitary of case 2, the Penaeus Vannmei less than the net cage mesh 22 that aforementioned diameter is 2.7cm or 3cm is swum out of
Actively collect shrimp net cage chamber and return to aquaculture pond, continue cultivation growth, and be more than the south of the net cage mesh 22 of a diameter of 2.7cm or 3cm
Penaeus vannamei, which is trapped within, actively to be collected shrimp net cage intracavitary and is put on sale for fishing for；
C）Supplement shrimp species（Also can claim " juvenile prawn "）, through step B）The quantity caught and work as the Penaeus Vannmei in aforementioned aquaculture pond is thrown to subtract
When few, mended in a manner of measuring to enter to aquaculture pond and throw Penaeus Vannmei seedling（That is juvenile prawn）And use embody continuous stubble i.e. not between
Disconnected gradient cultivation and gradient harvest.
In the present embodiment, as shown in Fig. 1 and Fig. 2, aforementioned semi-submersible type is floated frame 1 by a rectangular box 11 and is planted respectively
It is formed in each root cutting 12 of the four corners of rectangular box 11, a cutting is respectively offered in the four corners of rectangular box 11
Hole 111, cutting 12 is limited with 111 inserting of cutting hole and the bolt 121 by being inserted in cutting 12, and bolt 121 is supported on
For rectangular box 11 towards a upper side surface, the upper end of cutting 12 is stretched over the top of rectangular box 11；In aforementioned active collection shrimp
The four corners of the upper edge of net cage 2 are respectively fixed with an overhanging cable 23, and the four corners on the bottom edge for actively collecting shrimp net cage 2 are each
Traction rope 24 are fixed with, overhanging cable 23 is connect with the top of aforementioned cutting 12, and lower traction rope 24 and aforementioned cutting 12
Bottom connection, wherein：Aforementioned rectangular box 11 and cutting 12 is made of wood materials, that is, timber, and aforementioned net cage leads shrimp mouthful
21 a diameter of 28cm.
An overhanging cable is offered at the top of aforementioned cutting and hangs link slot 123, and is offered in the bottom of cutting 12
Once traction rope hangs link slot 124, and aforementioned overhanging cable 23, which with overhanging cable is hung link slot 123 and hung, to be connect, and preceding
The lower traction rope 24 stated, which with lower traction rope is hung link slot 124 and hung, to be connect.
In the present embodiment, the length of side of aforementioned rectangular framework 11 is 1.6m, and the height of aforementioned cutting 12 is 1.8m, and insert
The degree that the upper end of item 12 is stretched over the top of rectangular box 11 is 0.3m；Aforementioned active integrates the length of side of shrimp net cage 2 as 1.5m, high
It spends for 1.2m, the top for actively integrating shrimp net cage 2 leans out the degree of the water surface 4 as 0.3m.
Continue to see Fig. 1 to Fig. 3, lead shrimp cage 3 for aforementioned one group and respectively include cage net cover first support ring 31, a cage
Net cover the second support ring 32, a cage net cover 33 and cage wing set 34, cage net cover 33 is fixed on cage net cover first, the
Between two support rings 31,32, the adjacent cage net cover 33 for leading shrimp cage 3 passes through the first support ring of cage net cover 31 and cage net
It covers the second support ring 32 to connect from beginning to end each other, and first cage net cover the first support ring 31 for leading shrimp cage 3 is corresponding to before
It states net cage and leads the position of shrimp mouthfuls 21 and connect with aforementioned active collection shrimp net cage 2, cage wing covers 34 towards cage net cover second
One end of pushing out ring 32 is connect with the center of cage filter 35, and cage wing covers the 34 cage net covers towards cage net cover 33
One end of chamber 331 is stretched in cage net cover chamber 331, edge position and the second support ring of cage net cover of cage filter 35
32 are fixedly connected, aforementioned cage net cover chamber 331 communicated with aforementioned active collection shrimp net cage chamber and cage net cover chamber 331 it is straight
Diameter is 28cm.
As shown in Fig. 1 and Fig. 2, one is respectively offered in two sides of aforementioned cage net cover 33 and enters ground for Penaeus Vannmei
Cage net cover in cage net cover chamber 331 leads shrimp mouthful 332.
Aforementioned cage net cover 33 is woven into the hollow out columnar structure with cage net cover mesh 333 by strand such as 6 strands.
In the present embodiment, a diameter of 2.7cm or 3cm of aforementioned cage net cover mesh 331.In particular, when aforementioned
During a diameter of 2.7cm of net cage mesh 22, then a diameter of 2.7cm of cage net cover mesh 331, and work as the straight of net cage mesh 22
When diameter is 3cm, then the diameter of cage net cover mesh 331 is also 3cm.
Embodiment 2：
Fig. 4 is referred to, it is stainless steel tube only to use rectangular box 11 and cutting 12 instead metal tube and metal tube, in cutting
Upper end sets floating ball 122.It, as a preferred option can be corresponding to rectangular box since the present embodiment employs metal tube
A rectangular base framework 13 is added in 11 lower section, and a support feet 131 is respectively added in the four corners of the square bottom frame body 13, and by square
Shape framework 11 is transferred to the top of cutting 12, and the diameter that net cage is led to shrimp mouthful 21 and cage net cover chamber 331 is changed to 25cm.Remaining
With the description to embodiment 1.
Embodiment 3：
It only uses rectangular box 11 and cutting 12 instead mao bamboon to make, the height of cutting is changed to 1.5m；Net cage is led into shrimp mouthful 21
And the diameter of cage net cover chamber 331 is changed to 30cm.Remaining is the same as the description to embodiment 1.
Embodiment 4：
It only uses rectangular box 11 and cutting 12 instead mao bamboon to make, the height of cutting is changed to 1.65m.Remaining is the same as to implementing
The description of example 1.
Claims (9)
1. the Penaeus Vannmei classification harvesting method of a kind of artificial breeding, it is characterised in that include the following steps：
A) preparation-actively collect shrimp device, this actively collects shrimp device and floats frame (1) by a semi-submersible type, one actively collects shrimp net cage (2) and one
Group leads shrimp cage (3) composition, actively collects shrimp net cage (2) and is arranged on semi-submersible type and floats that frame (1) is interior, this actively collects the upper of shrimp net cage (2)
Portion forms opening, and closing is formed on surrounding and bottom, and actively collects the top of shrimp net cage (2) and lower part and semi-submersible type float frame
(1) it is fixed, a net cage is offered in the side for actively collecting shrimp net cage (2) and leads shrimp mouth (21), one group lead it is first in shrimp cage (3)
Shrimp cage is led to connect with actively collecting shrimp net cage (2) in the position for leading shrimp mouthful (21) corresponding to net cage, and one group is led in shrimp cage (3)
Remaining lead shrimp cage and recycle connection in a manner of end to end each other, wherein：The active collection shrimp net cage (2) is woven by strand
Into the hollow out columnar structure with net cage mesh (22), a diameter of 2.7cm or 3cm of the net cage mesh (22)；
B it) throws and catches, it, will be by step A when the culturing time of the Penaeus Vannmei in aquaculture pond reaches 55-65 days）Obtained active
Collect shrimp device and put into the aquaculture pond, and the net cage is made to lead shrimp mouthful (21) under the water surface in aquaculture pond, and it is described
Semi-submersible type, which floats frame (1) and actively collects the top of shrimp bellows (2), leans out the water surface, when the Penaeus Vannmei in aquaculture pond is successively through institute
One group stated leads shrimp cage (3) and the net cage leads shrimp mouthful (21) and enters the active collection shrimp net cage chamber for actively collecting shrimp net cage (2)
After interior, the Penaeus Vannmei of the net cage mesh (22) less than a diameter of 2.7cm or 3cm, which is swum out of, actively collects the return of shrimp net cage chamber
Aquaculture pond continues cultivation growth, and the Penaeus Vannmei of the net cage mesh (22) more than a diameter of 2.7cm or 3cm is trapped within
Actively collect shrimp net cage intracavitary to be put on sale for fishing for；
C）Shrimp species are supplemented, through step B）Throw catch and when the Penaeus Vannmei in the aquaculture pond quantity reduce when, to aquaculture pond
It mends and throws Penaeus Vannmei seedling and use and embody gradient cultivation and gradient harvest.
2. the Penaeus Vannmei classification harvesting method of artificial breeding according to claim 1, it is characterised in that described half
Submersible floats frame (1) by a rectangular box (11) and each root cutting (12) for the four corners for being plugged on rectangular box (11) respectively
Composition respectively offers a cutting hole (111), cutting (12) and cutting hole (111) inserting in the four corners of rectangular box (11)
And the bolt (121) by being inserted in cutting (12) limits, and bolt (121) is supported on rectangular box (11) towards upper one
Side surface, the upper end of cutting (12) are stretched over the top of rectangular box (11)；The four of the upper edge of the active collection shrimp net cage (2)
A corner is respectively fixed with an overhanging cable (23), and the four corners on the bottom edge for actively collecting shrimp net cage (2) are respectively fixed with
Traction rope (24), overhanging cable (23) are connect with the top of the cutting (12), and lower traction rope (24) and the cutting (12)
Bottom connection, the net cage leads a diameter of 25-30cm of shrimp mouthful (21).
3. the Penaeus Vannmei classification harvesting method of artificial breeding according to claim 2, it is characterised in that the square
Shape framework (11) and the cutting (12) be made of wood materials, mao bamboon or metal tube and when rectangular box (11) and
When cutting (12) is metal tube, one floating ball (122) is set in the upper end of cutting (12).
4. the Penaeus Vannmei classification harvesting method of artificial breeding according to claim 2, it is characterised in that inserted described
An overhanging cable is offered at the top of item and hangs link slot (123), and traction rope extension is offered in the bottom of cutting (12)
Link slot (124), the overhanging cable (23), which with overhanging cable is hung link slot (123) and hung, to be connect, and it is described under
Traction rope (24), which with lower traction rope is hung link slot (124) and hung, to be connect.
5. the Penaeus Vannmei classification harvesting method of artificial breeding according to claim 2, it is characterised in that the rectangle
The length of side of framework (11) is 1.6m, and the height of the cutting (12) is 1.5-1.8m, and the upper end of cutting (12) is stretched over square
The degree of the top of shape framework (11) is 0.3m；The active integrates the length of side of shrimp net cage (2) as 1.5m, is highly 1.2m, actively
The top for integrating shrimp net cage (2) leans out the degree of the water surface as 0.3m.
6. the Penaeus Vannmei classification harvesting method of artificial breeding according to claim 1, it is characterised in that described one
Group leads shrimp cage (3) and respectively includes first support ring of cage net cover (31), second support ring of cage net cover (32), a cage net
Cover (33) and a cage wing set (34), cage net cover (33) be fixed on first, second support ring of cage net cover (31,32) it
Between, the adjacent cage net cover (33) for leading shrimp cage (3) passes through the first support ring of cage net cover (31) and cage net cover second
Pushing out ring (32) connects from beginning to end each other, and first the first support ring of cage net cover (31) for leading shrimp cage (3) is corresponding to described
The position that net cage leads shrimp mouthful (21) is connect with the active collection shrimp net cage (2), and cage wing set (34) is towards cage net cover the
One end of two support rings (32) is connect with the center of cage filter (35), and cage wing set (34) is towards cage net cover
(33) one end of cage net cover chamber (331) is stretched in cage net cover chamber (331), the edge position of cage filter (35)
It is connect with the second support ring of cage net cover (32), the cage net cover chamber (331) is communicated with the active collection shrimp net cage chamber
And a diameter of 25-30cm of cage net cover chamber (331).
7. the Penaeus Vannmei classification harvesting method of artificial breeding according to claim 6, it is characterised in that described
At least one side of cage net cover (33) offers cage net cover and leads shrimp mouthful (332).
8. the Penaeus Vannmei classification harvesting method of artificial breeding according to claim 6, it is characterised in that the ground
Cage net cover (33) is woven into the hollow out columnar structure with cage net cover mesh (333) by strand.
9. the Penaeus Vannmei classification harvesting method of artificial breeding according to claim 7, it is characterised in that the cage
The a diameter of 2.7cm or 3cm of net cover mesh (331).
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