CN113647361B - Integral fishing method for net cage - Google Patents
Integral fishing method for net cage Download PDFInfo
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- CN113647361B CN113647361B CN202110897410.0A CN202110897410A CN113647361B CN 113647361 B CN113647361 B CN 113647361B CN 202110897410 A CN202110897410 A CN 202110897410A CN 113647361 B CN113647361 B CN 113647361B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 241000251468 Actinopterygii Species 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000037406 food intake Effects 0.000 claims abstract description 4
- 235000012631 food intake Nutrition 0.000 claims abstract description 4
- 238000003032 molecular docking Methods 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract 1
- 235000019688 fish Nutrition 0.000 description 35
- 241000972773 Aulopiformes Species 0.000 description 6
- 235000019515 salmon Nutrition 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000009313 farming Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000251464 Coelacanthiformes Species 0.000 description 1
- 241001149724 Cololabis adocetus Species 0.000 description 1
- 241000277299 Salmoniformes Species 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000001617 migratory effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000011160 research Methods 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
- A01K69/00—Stationary catching devices
- A01K69/04—Fixed nets with traps
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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
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
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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
- 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)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
Abstract
A method for integrally fishing a net cage is characterized in that a special net cage is adopted for cultivation, and the method for integrally fishing the net cage sequentially comprises the following steps: stopping the net cage for 3-5 days to ensure that fish in the whole net cage has strong food intake desire; detaching the movable net at the bottom of the offshore culture area, luring most fish from the culture area to a fishing area after a small amount of bait is thrown in the offshore culture area, and sealing the bottom of the offshore culture area; lifting the main body frame of the net cage to the water surface, stopping the fishing boat at a wharf by leaning on the wharf, detaching the movable side net, and then enabling the fishing personnel to enter the offshore culture area to arrange a pull net for fishing; an electric hoist is arranged on the main body frame, the balance weight ring and the central balance weight block are simultaneously pulled up through a traction rope, the balance weight ring and the central balance weight block are lifted to a preset position, the capacity of a open sea culture area is reduced as much as possible, and fishing personnel enter the open sea culture area to arrange a pull net for fishing. The method provided by the invention can be used for completely fishing the fish school cultured in the net cage, the steps are clear and definite, and the situation of incomplete fishing is avoided.
Description
Technical Field
The invention relates to an integral fishing method for a net cage.
Background
Salmon, salmon and saury belong to Osteichthyes, Salmoniformes and Salmon, are mainly distributed in the water areas where the Atlantic ocean, the Pacific ocean and the northern icebound ocean are intersected, belong to highly migratory fish with cold water property, and are known as the "emperor of the ice sea" by the International American food industry. Researches show that both tuna and salmon have delicious meat and rich nutrition and are rich in biological active substances such as EPA, DHA and the like. At present, salmon is mainly cultured artificially through a net cage, and is caught after the salmon is cultured for two or three years and enters a mature period, the conventional catching scheme is generally net-spreading type catching, the manual operation intensity is high, and the net-leaking fishes are easy to appear, so that all the fishes are difficult to be caught.
Disclosure of Invention
Aiming at the defects in the problems, the invention provides an integral fishing method for a net cage.
In order to achieve the purpose, the invention provides an integral fishing method of a net cage, which adopts a special net cage for cultivation, wherein the net cage comprises a main body frame in a three-dimensional structure, two buoys symmetrically arranged at the upper part of the main body frame and counterweight rings symmetrically arranged below the main body frame, net covers are arranged on the main body frame and between the main body frame and the counterweight rings, and the bottom of each net cover is also provided with a central counterweight block;
the netting comprises a top net, a side net, a bottom net and a purse net, wherein the top net, the side net and the bottom net are arranged on a main body frame and then are enclosed to form two symmetrically distributed offshore culture areas, the purse net is arranged between the main body frame and a counterweight ring and then is enclosed to form two open sea culture areas which respectively correspond to the offshore culture areas, the two open sea culture areas are respectively communicated with the two offshore culture areas, and the bottom of the offshore culture area is isolated from the open sea culture areas through the bottom net;
the bottom net is arranged in the offshore culture area and comprises a fixed net and a movable net, wherein the movable net is arranged at one corner of the bottom of the offshore culture area in a curtain type structure, and the movable net is opened to seal the bottom of the offshore culture area and form two independent areas with the open-sea culture area;
two docking wharfs are arranged on the outer side of the main body frame and correspond to the two offshore culture areas respectively, and a detachable movable side net is arranged on the main body frame close to the docking wharfs;
the integral fishing method of the net cage sequentially comprises the following steps:
firstly, the middle part of a floating barrel of the net cage is sunk below the water surface, the offshore culture area and the open sea culture area are both positioned below the water surface, fish schools are dispersed in the offshore culture area and the open sea culture area, the net cage stops eating for 3-5 days, and the fish schools in the offshore culture area and the open sea culture area have strong food intake desire;
secondly, detaching the movable net, forming a window at the bottom of the offshore culture area to communicate the offshore culture area with the open sea culture area, luring most fish swarms in the open sea culture area to the offshore culture area after a small amount of bait is thrown in the offshore culture area, and then installing the movable net to seal the bottom of the offshore culture area and prevent the fish swarms from escaping to the open sea culture area;
thirdly, lifting the main body frame of the net cage above the water surface, wherein the offshore culture area is positioned above the water surface, the open-sea culture area is positioned below the water surface, the center of the bottom net is sunken downwards under the action of the self gravity and fish schools to form a fish school accommodating space, the fish schools are in a dense gathering state, and 4 groups of gathered fish schools are formed at the bottom of each offshore culture area;
fourthly, the fishing boat stops at the stopping wharf, fishing personnel disassemble the movable side net beside the stopping wharf to form an inlet, and then the fishing personnel enter the main body frame through the inlet;
fifthly, arranging a pull net at the bottom net recess at the bottom of the main body frame to further gather fish schools, and fishing by using a fish suction pump on a fishing boat, wherein the process can be repeated for multiple times until the fish schools on the bottom net are completely fished;
sixthly, fishing a part of fish school in the open sea culture area, mounting traction ropes on the periphery of the counterweight ring and the central counterweight block, connecting the other ends of the traction ropes with the electric hoist, and mounting the electric hoist on the main body frame;
seventhly, starting the electric hoist to simultaneously pull up the balance weight ring and the central balancing weight through the traction rope, synchronously reducing the volume of the open sea culture area, when the balance weight ring and the central balancing weight are lifted to a preset position, reducing the volume of the open sea culture area to a certain proportion, and forming a gathering state in the reduced open sea culture area by the rest fish school;
and eighthly, disassembling the movable net, pulling the movable net to one side of the bottom of the open sea culture area to form a net collecting state, forming a window at the bottom of the offshore culture area, enabling fishing personnel to enter the open sea culture area from the window and arrange the pull net, wherein the pull net can be arranged for multiple times until all fish schools in the open sea culture area are fished.
As a further improvement of the invention, the main body frame comprises a top frame, a bottom frame and a stand column for connecting the top frame and the bottom frame, the bottom net is installed on the bottom frame, the top frame and the bottom frame are both in a field-shaped structure, the bottom net is divided into 4 parts by the bottom frame in the unilateral field-shaped structure, and a quarter area in the bottom net is set as a detachable movable net.
As a further improvement of the invention, in the sixth step, 5 electric hoists are used as a group, one group of electric hoists is respectively installed in the two field-shaped structures of the top frame, and the electric hoists are positioned at four corners and the center of the field-shaped structure of the top frame.
As a further improvement of the invention, the docking wharfs are symmetrically arranged at the front side and the rear side of the bottom frame, and the number of the docking wharfs is 4.
The invention has the beneficial effects that:
the method has the advantages of convenient fishing, good fishing effect, no damage to the fish, suitability for complete fishing and avoidance of omission in fishing of the fish in the culture area.
Drawings
Fig. 1 is a front view of the net cage;
fig. 2 is a structural view of a bottom frame 23 in the main body frame 2;
fig. 3 is a schematic structural view of the movable net 432 in the bottom frame 23 in a net retracting state;
fig. 4 is a schematic structural view of the movable net 432 in the bottom frame 23 in a state of being stretched.
In the figure: 1. a float bowl; 2. a main body frame; 21. a top frame; 22. a column; 23. a bottom frame; 3. an offshore farming area; 4. netting; 41. top net; 42. a side net; 421. a movable side net; 43. a bottom net; 431. fixing the net; 432. a movable net; 44. a purse net; 5. open sea farming areas; 6. a counterweight ring; 7. a central counterweight block; 8. and (5) stopping at a wharf.
Detailed Description
The invention relates to an integral fishing method of a net cage, which adopts a special net cage for culture, as shown in figure 1, the net cage adopts the special net cage for culture, the culture net cage comprises a main body frame 2 in a three-dimensional structure, two buoys 1 symmetrically arranged at the upper part of the main body frame 2 and counterweight rings 6 symmetrically arranged below the main body frame 2, net coats 4 are respectively arranged on the main body frame 2 and between the main body frame 2 and the counterweight rings 6, the bottom of each net coat 4 is also provided with a central counterweight 7, the main body frame 2 comprises a top frame 21, a bottom frame 23 and upright posts 22 connecting the top frame 21 and the bottom frame 23, the top frame 21 is integrally in two field-shaped structures, and the bottom frame 23 is also integrally in two field-shaped structures;
the netting 4 comprises a top net 41, a side net 42, a bottom net 43 and a purse net 44, the top net 41, the side net 42 and the bottom net 43 are arranged on the main body frame 2 and then are enclosed to form two offshore culture areas 3 which are symmetrically distributed, the purse net 44 is arranged between the main body frame 2 and the counterweight ring 6 and then is enclosed to form two open sea culture areas 5 which are respectively corresponding to the offshore culture areas 3, the two open sea culture areas 5 are respectively communicated with the two offshore culture areas 3, and the bottom of the offshore culture areas 3 is isolated from the open sea culture areas 5 through the bottom net 43;
the bottom net 43 is arranged on the bottom frame 23 at the bottom of the offshore culture area 3 and comprises a fixed net 431 and a movable net 432, the bottom frame 23 of the grid-shaped structure divides the bottom net 43 into 4 parts, one quarter of the area in the bottom net 43 is set as a detachable movable net 432, the movable net 432 is detachably arranged at one corner of the bottom of the offshore culture area 3, and the movable net 432 is opened to close the bottom of the offshore culture area 3 and form two independent areas with the open-sea culture area 5;
two docking wharfs 8 are arranged on the outer side of the main body frame 2 and correspond to the two offshore culture areas 3 respectively, a detachable movable side net 421 is installed on the main body frame 2 close to the docking wharfs 8, the docking wharfs 8 are symmetrically installed on the front side and the rear side of the bottom frame 23, and the number of the docking wharfs 8 is 4 (see fig. 2);
the integral fishing method of the net cage sequentially comprises the following steps:
firstly, the middle part of a floating barrel 1 of the net cage is sunk below the water surface, the offshore culture area 3 and the open sea culture area 5 are both positioned below the water surface, fish schools are scattered in the offshore culture area 3 and the open sea culture area 5, the net cage stops eating for 3-5 days, and the fish schools positioned in the offshore culture area 3 and the open sea culture area 5 have strong food intake desire;
secondly, the movable net 432 is disassembled, a window is formed at the bottom of the offshore culture area 3, so that the offshore culture area 3 is communicated with the open sea culture area 5 (see fig. 3), most of fish swarms in the open sea culture area 5 are attracted to the offshore culture area 3 after a small amount of bait is thrown in the offshore culture area 3, and then the movable net 432 is installed so as to close the bottom of the offshore culture area 3 (see fig. 4) and prevent the fish swarms from escaping to the open sea culture area 5;
thirdly, lifting the main body frame 2 of the net cage above the water surface, wherein the offshore culture area 3 is positioned above the water surface, the open sea culture area 5 is positioned below the water surface, the center of the bottom net 43 is sunken downwards under the action of self gravity and fish swarms to form a fish swarms accommodating space, the fish swarms are in a dense gathering state, and 4 groups of gathered fish swarms are formed at the bottom of each offshore culture area 3;
fourthly, the fishing boat stops at the docking port 8, the fishing personnel disassemble the movable side net 421 at the side of the docking port 8 to form an inlet, and then the fishing personnel enter the main body frame 2 through the inlet;
fifthly, arranging a pull net at the sunken part of the bottom net 43 at the bottom of the main body frame 2 to further gather fish schools, fishing by using a fish suction pump on a fishing boat, and repeating the process for multiple times until the fish schools on the bottom net 43 are completely fished;
sixthly, fishing partial fish schools in the open sea culture area 5, installing traction ropes on the periphery of the balance weight ring 6 and the central balance weight block 7, connecting the other ends of the traction ropes with electric hoists, installing the electric hoists on the main body frame 2, enabling 5 electric hoists to be in a group, respectively installing a group of electric hoists in two field-shaped structures of the top frame 21, and enabling the electric hoists to be located at four corners and the center of the field-shaped structure of the top frame 21;
seventhly, the electric hoist is started to pull up the balance weight ring 6 and the central balance weight block 7 through the traction rope, the volume of the open sea culture area 5 is synchronously reduced, when the balance weight ring 6 and the central balance weight block 7 are lifted to preset positions, the volume of the open sea culture area 5 is also reduced to a certain proportion, and the rest fish school forms a gathering state in the reduced open sea culture area 5;
and eighthly, disassembling the movable net 432, pulling the movable net 432 to one side of the bottom of the open sea culture area 5 to form a net collecting state, forming a window at the bottom of the offshore culture area 3, enabling fishing personnel to enter the open sea culture area 5 from the window and arranging pull nets, wherein the pull nets can be arranged for multiple times until all fish schools in the open sea culture area 5 are fished.
The method has the advantages of convenient fishing, good fishing effect, no damage to the fish, suitability for complete fishing and avoidance of omission in fishing of the fish in the culture area.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An integral fishing method of a net cage is characterized in that: a special net cage is adopted for cultivation, the net cage comprises a main body frame (2) with a three-dimensional structure, two buoys (1) symmetrically arranged at the upper part of the main body frame (2), and counterweight rings (6) symmetrically arranged below the main body frame (2), netting (4) are respectively arranged on the main body frame (2) and between the main body frame (2) and the counterweight rings (6), and a central counterweight block (7) is also arranged at the bottom of the netting (4);
the netting (4) comprises a top net (41), a side net (42), a bottom net (43) and a purse net (44), the top net (41), the side net (42) and the bottom net (43) are arranged on the main body frame (2) and then enclosed to form two offshore culture areas (3) which are symmetrically distributed, the purse net (44) is arranged between the main body frame (2) and the counterweight ring (6) and then enclosed to form two open sea culture areas (5) which are respectively corresponding to the offshore culture areas (3), the two open sea culture areas (5) are respectively communicated with the two offshore culture areas (3), and the bottom of the offshore culture areas (3) is isolated from the open sea culture areas (5) through the bottom net (43);
the bottom net (43) is arranged in the offshore culture area (3) and comprises a fixed net (431) and a movable net (432), wherein the movable net (432) is arranged at one corner of the bottom of the offshore culture area (3) in a curtain type structure, and the movable net (432) is opened to seal the bottom of the offshore culture area (3) and form two independent areas with the offshore culture area (5);
a docking wharf (8) is arranged on the outer side of the main body frame (2) and corresponds to the two offshore culture areas (3), and a detachable movable side net (421) is arranged on the main body frame (2) close to the docking wharf (8);
the integral fishing method of the net cage sequentially comprises the following steps:
firstly, the middle part of a buoy (1) of the net cage is sunk below the water surface, the offshore culture area (3) and the open sea culture area (5) are both positioned below the water surface, fish schools are scattered in the offshore culture area (3) and the open sea culture area (5), the net cage stops feeding for 3-5 days, and the fish schools positioned in the offshore culture area (3) and the open sea culture area (5) have strong food intake desire;
secondly, the movable net (432) is disassembled, a window is formed at the bottom of the offshore culture area (3), the offshore culture area (3) is communicated with the open sea culture area (5), most of fish swarms in the open sea culture area (5) are attracted to the offshore culture area (3) after a small amount of bait is thrown in the offshore culture area (3), and then the movable net (432) is installed so as to seal the bottom of the offshore culture area (3) and prevent the fish swarms from escaping to the open sea culture area (5);
thirdly, lifting the main body frame (2) of the net cage above the water surface, wherein the offshore culture area (3) is located above the water surface, the open-sea culture area (5) is located below the water surface, the center of the bottom net (43) is sunken downwards under the action of the self gravity and the fish school to form a fish school accommodating space, the fish schools are in a dense gathering state, and 4 groups of gathered fish schools are formed at the bottom of each offshore culture area (3);
fourthly, the fishing boat stops at the docking port (8), the fishing personnel disassemble the movable side net (421) at the side of the docking port (8) to form an inlet, and then the fishing personnel enter the main body frame (2) through the inlet;
fifthly, arranging a pull net at the sunken part of the bottom net (43) at the bottom of the main body frame (2) to further gather fish schools, fishing by using a fish suction pump on a fishing boat, and repeating the process for multiple times until the fish schools on the bottom net (43) are fished completely;
sixthly, fishing a part of fish school in the open sea culture area (5), installing traction ropes on the periphery of the balance weight ring (6) and the central balance weight block (7), connecting the other ends of the traction ropes with an electric hoist, and installing the electric hoist on the main body frame (2);
seventhly, the electric hoist is started to simultaneously pull up the counterweight ring (6) and the central counterweight block (7) through the traction rope, the volume of the open sea culture area (5) is synchronously reduced, when the counterweight ring (6) and the central counterweight block (7) are lifted to a preset position, the volume of the open sea culture area (5) is also reduced to a certain proportion, and the rest fish school forms a gathering state in the reduced open sea culture area (5);
and eighthly, disassembling the movable net (432), pulling the movable net (432) to one side of the bottom of the open sea culture area (5) to form a net collecting state, forming a window at the bottom of the offshore culture area (3), enabling fishing personnel to enter the open sea culture area (5) from the window and arranging pull nets, and arranging the pull nets for multiple times until all fish schools in the open sea culture area (5) are fished.
2. The integral fishing method for net cages according to claim 1, wherein the integral fishing method comprises the following steps: main body frame (2) are including top frame (21), underframe (23), stand (22) of connecting top frame (21) and underframe (23), and end net (43) are installed on underframe (23), and top frame (21) and underframe (23) all are two field font structures, and the underframe (23) of unilateral field font structure divide into 4 with end net (43), and the quarter region in end net (43) sets up to detachable movable net (432).
3. The integral fishing method for net cages as claimed in claim 2, wherein: and step six, the electric hoists are arranged in a group of 5 electric hoists, a group of electric hoists are respectively arranged in the two field-shaped structures of the top frame (21), and the electric hoists are positioned at four corners and the center of the field-shaped structures of the top frame (21).
4. The integral fishing method for net cages as claimed in claim 2, wherein: the docking wharfs (8) are symmetrically arranged on the front side and the rear side of the bottom frame (23), and the number of the docking wharfs (8) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110897410.0A CN113647361B (en) | 2021-08-05 | 2021-08-05 | Integral fishing method for net cage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110897410.0A CN113647361B (en) | 2021-08-05 | 2021-08-05 | Integral fishing method for net cage |
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| CN113647361A CN113647361A (en) | 2021-11-16 |
| CN113647361B true CN113647361B (en) | 2022-09-13 |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003061513A (en) * | 2001-08-22 | 2003-03-04 | Nichimo Co Ltd | Impounding net |
| CN2689689Y (en) * | 2004-03-28 | 2005-04-06 | 吴孝顺 | Device for fishing in middle and bottom lagers |
| JP2005278486A (en) * | 2004-03-29 | 2005-10-13 | Nec Fielding Ltd | Fish-capturing device |
| KR200440390Y1 (en) * | 2006-10-31 | 2008-06-10 | 윤강 | Catcher of Eriocheir Sinensis |
| CN102349476A (en) * | 2011-08-15 | 2012-02-15 | 中国水产科学研究院淡水渔业研究中心 | Fishing device for cultured fishes |
| CN104969981A (en) * | 2014-04-14 | 2015-10-14 | 徐州一统渔具有限公司 | Grass carp entrapping device for water reservoir |
| CN107372260B (en) * | 2017-08-23 | 2020-09-01 | 浙江大学宁波理工学院 | Anchor type self-energy-supply semi-submersible aquaculture net cage |
| CN108029609B (en) * | 2018-01-05 | 2020-10-13 | 舟山海大中源海洋科技有限公司 | Separate fishing method for purse seine culture |
| US10959416B2 (en) * | 2018-08-31 | 2021-03-30 | Carp Solutions, LLC | Fishing devices and methods |
| KR20200109120A (en) * | 2019-03-12 | 2020-09-22 | 황정향 | Square billboard for political fishing net |
| CN113080156B (en) * | 2021-03-26 | 2022-04-15 | 中国海洋大学 | Device and method for catching cold water fishes in large-scale cultivation net cage in summer |
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