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Facility and method for catching macrobrachium rosenbergii in crab and shrimp double-main breeding mode

A technology of Macrobrachium rosenbergii and model, applied in the field of fishing facilities and fishing facilities of Macrobrachium rosenbergii, can solve the problems of mutual killing, difficulty in promotion, and high fishing labor intensity, and achieve the effect of avoiding damage and reducing injury.

Active Publication Date: 2021-06-11
苏州市毛氏阳澄湖水产发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even though ground cages and nets were used to catch giant giant rosenbergii in a small amount in the early days, because river crabs and giant giant rosenbergii went to the ground cages and nets together, there was a phenomenon of killing each other, which affected the sales price
Therefore, although the crab and shrimp dual-main breeding mode can make river crabs and giant giant prawns grow up at the same time, the quality of aquatic products is good; but due to the high labor intensity of fishing and the phenomenon of stump crabs, it affects the enthusiasm of farmers and is difficult to promote.

Method used

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  • Facility and method for catching macrobrachium rosenbergii in crab and shrimp double-main breeding mode

Examples

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Embodiment 1

[0025] Such as figure 1 Shown is the fishing facility for Macrobrachium rosenbergii in the crab and shrimp double-main culture mode, which is arranged in the culture pond so that the crab and shrimp double-main culture mode can be carried out in the culture pond. Usually used aquaculture ponds are square, and its suitable size range is preferably: the length is 100-150m, and the width is 80-100m, so that the aquaculture pond has vertical pond ridge a and pond ridge b (defining the length of the pond ridge a ≥ the pond ridge The length of b, the length of the culture pond is the length of the pond ridge a, the width of the culture pond is the length of the pond ridge b); it should be noted that the middle of the pond ridge a (i.e. the middle of the culture pond) does not plant Aquatic plants, the width of the area without aquatic plants is 4-5m. Of course, the shape and size of the culture pond can be conventionally adopted in the existing culture mode. The fishing facilities...

Embodiment 2

[0032] This embodiment provides a fishing method for giant giant prawns in the double-main culture mode of crabs and shrimps, adopting the fishing facilities in embodiment 1, specifically: in the first ten days of March in 24 acres of ponds, stocking river crabs with a specification of 80 / kg (breeding density 850 / mu), cultivate according to existing methods (as disclosed in the Chinese invention patent of 201410633311.1 as the application number; hereinafter the same); then in the first ten days of July, 3000 macrobrachium rosenbergii of specification 200 / kg were stocked. Tails are cultured according to existing methods; they are fished from late October to early November. Harvest river crab 105kg / mu, average size 175g / piece, recapture rate 70.6%; Macrobrachium rosenbergii 145kg / mu, average size 75g / tail, recapture rate 64.4%.

Embodiment 3

[0034] This embodiment provides a fishing method for Macrobrachium rosenbergii in the double-main culture mode of crabs and shrimps. It is basically the same as the method in Example 2, except that the lake crabs are cultured in 16 acres of purse seines, and the specifications are 100 in the first ten days of March. 800 river crabs / kg / mu; and 1,400 Macrobrachium rosenbergii with a size of 250 / kg were stocked in early July. In the end, river crabs were harvested at 95kg / mu, with an average size of 195g / piece, and a return rate of 60.9%; giant giant rosenbergii was harvested at 85kg / mu, with an average size of 90g / tail, and a return rate of 67.5%.

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Abstract

The invention discloses a facility and method for catching macrobrachium rosenbergii in a crab and shrimp double-main breeding mode. The crab and shrimp double-main breeding mode is carried out in a breeding pond. The breeding pond is provided with a pond ridge a. The facility comprises a wall net with one end connected with the pond ridge a, a wing net assembly, two groups of water impacting assemblies, a ground cage net assembly, and a rear net cage connected with the other end of the ground cage net assembly. In this way, the macrobrachium rosenbergii with the habits of pushing water and swimming close to the net wall is lured to enter the catching facility through water flow generated by water impacting of a submersible pump and enters the rear net cage through a wing net and a ground cage which puzzle crabs and shrimps, and the purpose of effectively and massively capturing the macrobrachium rosenbergii is achieved; and the river crabs can climb out of the net cage again in the open net cage, so that the river crabs are prevented from being caught, and the injury risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of crab and shrimp cultivation, and relates to a fishing facility, in particular to a fishing facility and a fishing method for Macrobrachium rosenbergii in a crab and shrimp double main breeding mode. Background technique [0002] In recent years, in order to reduce the market risk of monoculture of river crabs, make full use of the excellent water space of crab ponds, tap the potential of water resources, and increase the efficiency of farming, people have started to interbreed river crabs and giant giant freshwater shrimp in lakes and ponds at low densities. For example, the Chinese invention patent with the application number 201410133162.2 discloses: 160-240 Macrobrachium rosenbergii with a size of 6-8cm / tail are raised in a stocking quantity of 600-1000 / mu of river crabs in nets around lakes; 800-1500 in ponds 400-500 tails / kg Macrobrachium rosenbergii 80-320 tails / mu can be nested in a river crab bree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K69/02
CPCA01K69/02Y02A40/81
Inventor 毛觉生端明伟宋学宏杨彩根菅攀阳陆乙课许阳
Owner 苏州市毛氏阳澄湖水产发展有限公司
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