CN102742556B - Pond fishing tool and fishing method for freshwater shrimp seeds - Google Patents

Pond fishing tool and fishing method for freshwater shrimp seeds Download PDF

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Publication number
CN102742556B
CN102742556B CN201110307649.4A CN201110307649A CN102742556B CN 102742556 B CN102742556 B CN 102742556B CN 201110307649 A CN201110307649 A CN 201110307649A CN 102742556 B CN102742556 B CN 102742556B
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China
Prior art keywords
net
net cage
shrimp
pond
seedling
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Expired - Fee Related
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CN201110307649.4A
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Chinese (zh)
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CN102742556A (en
Inventor
龚永生
傅洪拓
蒋速飞
熊贻伟
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Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences
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Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences
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Priority to CN201110307649.4A priority Critical patent/CN102742556B/en
Publication of CN102742556A publication Critical patent/CN102742556A/en
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Publication of CN102742556B publication Critical patent/CN102742556B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a pond fishing tool for freshwater shrimp seeds. The pond fishing tool is characterized by comprising a seed collecting net cage and a shrimp pushing net. The seed collecting net cage is provided with a bottom, does not have a cover and is in a shape of a cuboid. Three lateral wall nets of the seed collecting net cage are fixed, one short lateral wall net is movable and forms a net cage tongue, the width of the net cage tongue is the same as that of the net cage, the height of the net cage tongue is the same as that of the net cage, a pull cable is arranged on a net cage tongue side, and the net cage tongue can be turned over and sink to the bottom of a pond. The shrimp pushing net is a strip-shaped net piece with a floater arranged on the upper side and a sinker arranged on the lower side, the upper side is tight, and the lower side is loose. One end of the shrimp pushing net is movably connected with a frame in the height direction of the cage at the tongue end of the seed collecting net cage and can be detached. The lateral wall nets of the seed collecting net cage and the net piece of the shrimp pushing net are dense nets with hole diameter ranging from 0.2-0.25 cm. The invention further discloses a fishing method by using the tool. Compared with an ordinary fishing method of pulling a net, the fishing method for the shrimp seeds is delight and simple in operation, requires less manpower, is light in damage on the shrimp seeds, and can increase survival rate of the shrimp seeds by more than 20%.

Description

Instrument and catching method thereof are fished in a kind of pond of freshwater shrimp seedling
Technical field
The present invention relates to shrimps and fish for technology, particularly relate to a kind of design, assembling of freshwater shrimp seedling catching net and use this netting gear to carry out the method that shrimp seedling is fished for.
Background technology
Freshwater shrimp, formal name used at school Japanese macrobrachium supernbum ( macrobrachium nipponense), belong to Arthropoda, Crustachia, Decapoda, Palaemonidae, pond crayfish genus.Individual larger a kind of shrimps in fresh water shrimp, its fine and tender taste, delicious flavour, and the culture-cycle is short, and growth is fast, and economic worth is high, is the important shrimps in culture of China.At present, national You21Ge provinces, cities and autonomous regions carry out shrimp culture, and cultured area occupies first of Freshwater shrimps.More than 20 ten thousand tons of shrimp culture annual productions, more than 100 hundred million yuan of annual value of production.Continuous expansion along with cultivation scale; improving constantly of intensive degree; it is more and more important that the large-scale production of freshwater shrimp seed just seems; fishing for of freshwater shrimp seed is large important step and the technical barrier in the large-scale production of freshwater shrimp seed; because freshwater shrimp shrimp in autumn put in a suitable place to breed the time in early July to early August, high temperature season at a time when this, water temperature Gao Shikeda in pond is more than 35 ℃; add when freshwater shrimp seedling grows to 2~3 centimetres and just start to sink to the bottom, more difficult fishing for.With traditional pulling method as shown in Figure 1, arrow is for drawing in the net direction, carry out extensive shrimp seedling and fish for netting gear bottom line sinker used requirement highly, operation easier is large, the pond of common 3335 square metres, need more than 6 people could operate, not only workload is large, and harvesting efficiency is low, and in easily a large amount of bed mud bands being networked, prawn seedling damage is serious, in the urgent need to finding a kind of freshwater shrimp seedling pond catching method of easy and simple to handle, efficient, low damage.
Summary of the invention
Instrument and catching method thereof are fished in the pond that the object of this invention is to provide a kind of freshwater shrimp shrimp seedling.By design, assembling and the use of freshwater shrimp seedling catching net, improve the harvesting rate of shrimp seedling, reduce the shrimp seedling damage in harvesting, reduce the labour intensity of fishing for.
The main technical schemes that realizes the object of the invention is as follows:
Instrument is fished in a kind of pond of freshwater shrimp seedling, it is characterized in that: it comprises collection seedling net cage and catches up with shrimp net, not with cover at the bottom of described collection seedling net cage band, be cuboid, three sidewall nets of described collection seedling net cage are fixed, a short sidewall net is movable, form net cage tongue, net cage tongue is wide wide identical with net cage, high quite high with net cage, net cage tongue limit is provided with drag-line, at the bottom of net cage tongue can overturning sinks to pond; The described shrimp net of catching up with is that top is provided with the band shape net sheet that float is provided with sinker below, and top is tightened looser below; The described shrimp net one end of catching up with is flexibly connected with the high direction frame of described collection seedling net cage net cage tongue end case also detachably; The described seedling net cage sidewall net that integrates is the close net of 0.2~0.25 centimetre as aperture with catching up with shrimp net net sheet.
Preferred: long 10 meters of described collection seedling net cage, wide 3.5~4 meters, high 1.2 meters; The described shrimp net net sheet of catching up with is high 1.5 meters, and the distance between the float of top is approximately 20 centimetres, and described sinker is the iron chains of 6 millimeters of diameters, and length is 35~40 meters.
A pond catching method for freshwater shrimp seedling, comprises the steps:
(1) collection seedling net cage arranges: the point midway that a long limit of collection seedling net cage is abutted against to the long Bian Chi of the nursery pond ridge.At the bottom of the net cage tongue of collection seedling net cage is swung to pond along pond long side direction;
(2) catch up with shrimp net to connect: make to catch up with one end of shrimp net to be arranged in one jiao of collection seedling net cage open outer side, catch up with one side that shrimp net is equipped with float upper, near at the bottom of pond be take that iron chains is sinker below;
(3) draw in the net to catch up with shrimp: haul and catch up with the other end of shrimp net to sweep a circle along nursery pond four limits, shrimp seedling is caught up with in collection seedling net cage;
(4) pack up net cage tongue sealing collection seedling net cage: when catching up with shrimp net to move near collection seedling net cage opening, pack up gradually and catch up with shrimp net, final stage is caught up with to shrimp net, and envelope is to collection seedling net cage opening part temporarily, and then pull-up net cage tongue, removes to open and catch up with shrimp net, sealing collection seedling net cage.
This seed shrimp seedling catching method and the common catching method that draws in the net operate easily easy, the manpower needing is less, the pond of general one 3335 square metres only needs 2~3 people just can operate, and common pulling method at least needs 5~6 people, therefore reduce by 50~120% workload than the common catching method that draws in the net.The damage of prawn seedling is also very light, can improve the survival rate of shrimp seedling more than 20%.
Accompanying drawing explanation
Fig. 1 is that instrument schematic diagram (catching up with shrimp net to omit net sheet) is fished in the pond of freshwater shrimp seedling;
Fig. 2 is existing shrimp seedling catching method schematic diagram, and arrow is for drawing in the net direction;
Fig. 3 is shrimp seedling catching method schematic diagram of the present invention, and arrow is for drawing in the net direction;
1, collection seedling net cage; 2, net cage tongue; 3, catch up with shrimp net; 4, iron chains; 5, float; 6, drag-line; 7, shrimp seedling draws in the net;
8, nursery pond.
Embodiment
Below by specific embodiment, further the present invention is elaborated.
Embodiment 1:
Certain shrimp culture field, 3335 square metres of nursery pond areas.1 10 meters * 4.0 meters * 1.2 meters, use collection seedling net cage, long limit of net cage is parallel with long limit, pond and near long limit, pond, collection seedling net cage 1 is at the point midway on length limit, pond.Collection seedling net cage 1 movable short side is that net cage tongue 2 is wide wide identical 4.0 meters with net cage, high and net cage high quite (1.2 meters of left and right).Catching up with shrimp net 3 is long 75 meters of two combinations, and net sheet is high 1.5 meters, and the distance that top float is 5 is 20 centimetres, is fixed thereon and makes sinker below with Ф 6mm iron chains 4, and by the method for above-mentioned introduction, 3 people draw in the net to fish for.The first net harvesting rate 89%, shrimp shoot survival percent improves 25%.
Embodiment 2:
Certain shrimp culture family, 2000 square metres of nursery pond areas.1 10 meters * 3.5 meters * 1.2 meters, use collection seedling net cage, long limit of net cage is parallel with long limit, pond and near long limit, pond, collection seedling net cage 1 is at the point midway on length limit, pond.The movable short side of collection seedling net cage is that net cage tongue 2 is wide wide identical 3.5 meters with net cage, high and net cage high quite (1.2 meters of left and right).Catch up with long 65 meters of 3 two combinations of shrimp net, net sheet is high 1.5 meters, and the distance that top float is 5 is 20 centimetres, is fixed thereon and makes sinker below with Ф 6mm iron chains 4, and by the method for above-mentioned introduction, 3 people draw in the net to fish for.The first net harvesting rate 91%, shrimp shoot survival percent improves 23%.
Embodiment 3:
Certain cultivation company, 6000 square metres of freshwater shrimp nursery pond areas.1 10 meters * 4.0 meters * 1.2 meters, use collection seedling net cage, long limit of net cage is parallel with long limit, pond and near long limit, pond, collection seedling net cage 1 is at the point midway on length limit, pond.Collection seedling net cage 1 movable short side is that net cage tongue 2 is wide wide identical 4.0 meters with net cage, high and net cage high quite (1.2 meters of left and right).Catch up with long 100 meters of 3 three combinations of shrimp net, net sheet is high 1.5 meters, and the distance that top float is 5 is 20 centimetres, with Ф 6mm iron chains 4, be fixed thereon and make sinker below, by the method for above-mentioned introduction, 3 people draw in the net to fish for, the first net harvesting rate 85%, shrimp shoot survival percent improves 27%.
Above embodiment fishes for scheme in order to the freshwater shrimp shrimp seedling pond that the present invention is described sets up, but the present invention is not limited to this.Worth attention, any can be by collection seedling net cage being set and catching up with net to carry out method that shrimp seedling fishes for all within protection domain of the presently claimed invention, can not depart from the scope of spirit of the present invention and appended claim protection.Here no longer other specific embodiment is enumerated.

Claims (3)

1. instrument is fished in the pond of a freshwater shrimp seedling, it is characterized in that: it comprises collection seedling net cage and catches up with shrimp net, not with cover at the bottom of described collection seedling net cage band, be cuboid, three sidewall nets of described collection seedling net cage are fixed, a short sidewall net is movable, form net cage tongue, net cage tongue is wide wide identical with net cage, high quite high with net cage, net cage tongue limit is provided with drag-line, at the bottom of net cage tongue can overturning sinks to pond; The described shrimp net of catching up with is that top is provided with the band shape net sheet that float is provided with sinker below, and top is tightened looser below; The described shrimp net one end of catching up with is flexibly connected with the high direction frame of described collection seedling net cage net cage tongue end case also detachably; The described seedling net cage sidewall net that integrates is the close net of 0.2~0.25 centimetre as aperture with catching up with shrimp net net sheet.
2. instrument is fished in the pond of a kind of freshwater shrimp seedling according to claim 1, it is characterized in that: long 10 meters of described collection seedling net cage, and wide 3.5~4 meters, high 1.2 meters; The described shrimp net net sheet of catching up with is high 1.5 meters, and the distance between the float of top is approximately 20 centimetres, and described sinker is the iron chains of 6 millimeters of diameters, and length is 35~40 meters.
3. a pond catching method for the freshwater shrimp seedling of instrument is fished in employing as claimed in claim 1, comprises the steps:
(1) collection seedling net cage arranges: the point midway that a long limit of collection seedling net cage is abutted against to the long Bian Chi of the nursery pond ridge; At the bottom of the net cage tongue of collection seedling net cage is swung to pond along pond long side direction;
(2) catch up with shrimp net to connect: make to catch up with one end of shrimp net to be arranged in one jiao of collection seedling net cage open outer side, catch up with one side that shrimp net is equipped with float upper, near at the bottom of pond be take that iron chains is sinker below;
(3) draw in the net to catch up with shrimp: haul and catch up with the other end of shrimp net to sweep a circle along nursery pond four limits, shrimp seedling is caught up with in collection seedling net cage;
(4) pack up net cage tongue sealing collection seedling net cage: when catching up with shrimp net to move near collection seedling net cage opening, pack up gradually and catch up with shrimp net, final stage is caught up with to shrimp net, and envelope is to collection seedling net cage opening part temporarily, and then pull-up net cage tongue, removes to open and catch up with shrimp net, sealing collection seedling net cage.
CN201110307649.4A 2011-10-10 2011-10-10 Pond fishing tool and fishing method for freshwater shrimp seeds Expired - Fee Related CN102742556B (en)

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Application Number Priority Date Filing Date Title
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CN102742556B true CN102742556B (en) 2014-04-02

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103782971A (en) * 2012-11-01 2014-05-14 南京市水产科学研究所 Pelteobagrus fulvidraco capturing method
CN106106385B (en) * 2016-06-15 2018-11-23 中国水产科学研究院东海水产研究所 A method of it prevents from generating torsion when trawlnet body operation
CN110692604A (en) * 2019-11-20 2020-01-17 杨国梁 Method for catching macrobrachium by netting
CN113180019A (en) * 2021-05-13 2021-07-30 中国水产科学研究院淡水渔业研究中心 Freshwater shrimp's equipment of catching in winter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2134780Y (en) * 1992-08-20 1993-06-02 蔡惠荣 Stationary trap for catching bottom fish
JP2007028929A (en) * 2005-07-22 2007-02-08 Tatsumi Honda Frame member for fishing net, the fishing net, and dragnet
CN201830773U (en) * 2010-09-02 2011-05-18 闫洪晨 High-efficient shrimp pot
KR20110093739A (en) * 2011-04-13 2011-08-18 유화자 Fishing net
CN202232608U (en) * 2011-10-10 2012-05-30 中国水产科学研究院淡水渔业研究中心 Pool fishing tool for freshwater shrimp seeds

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2134780Y (en) * 1992-08-20 1993-06-02 蔡惠荣 Stationary trap for catching bottom fish
JP2007028929A (en) * 2005-07-22 2007-02-08 Tatsumi Honda Frame member for fishing net, the fishing net, and dragnet
CN201830773U (en) * 2010-09-02 2011-05-18 闫洪晨 High-efficient shrimp pot
KR20110093739A (en) * 2011-04-13 2011-08-18 유화자 Fishing net
CN202232608U (en) * 2011-10-10 2012-05-30 中国水产科学研究院淡水渔业研究中心 Pool fishing tool for freshwater shrimp seeds

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