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Natural water artificial fish spawning nest setting system

A technology for natural water bodies and artificial fish, applied in fish farming, application, climate change adaptation, etc., can solve problems such as increasing the difficulty of management and artificial input, setting area restrictions for artificial fish nests, and submerging in deep underwater. , to achieve the effect of expanding the setting area range, simple structure, and reducing stacking

Inactive Publication Date: 2014-01-29
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if some effective fixing devices and lifting adjustment devices are not used when setting up artificial fish nests, generally they can only be set up in still water environments such as lakes with small water level changes or in shore areas where the wind is sheltered and the water flow is slow.
Otherwise, the artificial fish nest may be washed away by the water flow, or drift and deform, become exposed due to changes in water level, or be submerged deep underwater, etc., which will greatly restrict the artificial fish nest placement area.
In addition, the accumulation of floating debris in the artificial fish nest is an important factor affecting the service life and effect of the fish nest. Relying on manual removal of floating accumulations will increase the difficulty of management and labor input.

Method used

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  • Natural water artificial fish spawning nest setting system
  • Natural water artificial fish spawning nest setting system
  • Natural water artificial fish spawning nest setting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The implementation area is the Guzhu River section of the Dongjiang River. The flow velocity of the water area is generally 0.3-0.4m / s, and the maximum flow velocity during the flood period can reach 0.8m / s; the water level varies by 1m; the sandy bottom is made of reeds and bamboos in this example. 1. For artificial fish nest units with a width of 2.5m, 35 fish nest units are connected in series with two nylon ropes on the left and right sides respectively to form an artificial fish nest row with a total length of 105m.

[0036] Such as Figure 1~4As shown, a natural water body artificial fish nest setting system includes a floating object interception and diversion device 1, a front-end fixing device 2, a number of lifting and fixing devices 3 and a number of artificial fish nest units 4; wherein, the floating object interception and diversion device 1, The front-end fixing device 2 and the lifting fixing device 3 are arranged in sequence according to the direction of...

Embodiment 2

[0046] The difference between this embodiment and Embodiment 1 is that the metal ring 7 is a stainless steel ring, the distance between the first fixed metal pipe 10 and the second fixed metal pipe 11 is 2m, and one is set every 10m in the artificial fish nest row 5. Lifting and fixing device 3, the inclination angle of the first fixed metal pipe 10 and the second fixed metal pipe 11 is 70°, the inclination angle of the lifting and fixed metal pipe 13 is 85°, the first floating rod 8 and the second floating rod 9 are wood.

[0047] Comparing the egg attachment rate of artificial fish nests, such as Figure 6 As shown, the experimental group adopts figure 1 The structure in the structure, including floating object interception and diversion device 1, front-end fixing device 2, several lifting and fixing devices 3 and several artificial fish nest units 4; the control group adopts front-end fixing device 2, several lifting and fixing devices 3 and several artificial fish nest un...

Embodiment 3

[0049] The difference between this embodiment and Embodiment 1 is that the metal ring 7 is a copper ring, the distance between the first fixed metal pipe 10 and the second fixed metal pipe 11 is 3m, and one is set every 15m in the artificial fish nest row 5. Lifting and fixing device 3, the inclination angle of the first fixed metal pipe 10 and the second fixed metal pipe 11 is 80°, the inclination angle of the lifting and fixed metal pipe 13 is 88°, the metal pipe 6 is an iron pipe, and the first fixed metal pipe 10 , The second fixed metal pipe 11 and the lifting fixed metal pipe 13 are all iron pipes with pointed welding heads, and the rectangular metal frame 14 is a rectangular aluminum alloy pipe frame.

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Abstract

The invention discloses a natural water artificial fish spawning nest setting system which comprises an overwater floating object intercepting and distributing device, a front end fixing device, a plurality of lifting fixing devices and a plurality of fish spawning nest units. The natural water artificial fish spawning nest setting system solves the problems of large artificial fish spawning nest placement setting area limit, short artificial fish spawning nest service life, poor artificial fish spawning nest use effect, high management difficulty and the like in the prior art, and has the advantages of simple structure, wide applicable range, capabilities of effectively reducing overwater floating object accumulation and setting artificial fish spawning nests at the stream segments with torrential water flow, large water level height changes, hard bottom sand sediments and the like.

Description

technical field [0001] The invention relates to aquaculture multiplication technology, in particular to a natural water body artificial fish nest setting system. Background technique [0002] In the prior art, setting artificial fish nests for fish as spawning beds in natural water bodies such as rivers and lakes is an effective method for artificially multiplying fish resources. However, if some effective fixing devices and lifting adjustment devices are not used when setting up artificial fish nests, they can generally only be set up in still water environments such as lakes with small water level changes or in shore areas where the wind is sheltered and the water flow is slow in rivers. Otherwise, the artificial fish nest may be washed away by the water flow, or drift and deform, become exposed due to changes in water level, and be submerged deep underwater, etc., which will greatly limit the area where the artificial fish nest is placed. In addition, the accumulation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 林小涛朱志明孙军刘毅张鹏飞
Owner JINAN UNIVERSITY
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