Ecological catching method for small-sized mountain stream fishes

A small-scale fish technology, applied in fishing, application, animal husbandry, etc., can solve the problems of natural environment and fish resource damage, artificial fishing difficulty, etc., and achieve good fishing effect, protection and regeneration

Inactive Publication Date: 2016-01-20
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the streams deep in the mountains, there are many small fish with high economic value and nutritional value, but due to the special terrain of the streams, manual fishing is extre

Method used

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  • Ecological catching method for small-sized mountain stream fishes
  • Ecological catching method for small-sized mountain stream fishes
  • Ecological catching method for small-sized mountain stream fishes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A kind of concrete operation step of stream small-sized fish ecological fishing is as follows:

[0046] 1) Prepare the fishnet bag

[0047] see Figure 5 , The fishing net bag is a sleeve type structure formed by a fishing net 11 and a fishing net bag 12 set, and the mesh is 10mm.

[0048] The length of fishing net 11 is 30cm, is funnel-shaped, and import is big and outlet is little, and the diameter of import is 20cm, and the diameter of export is 5cm;

[0049] The length 60cm of fishing net bag 12 is collected, and one end is an inlet, and the other end is a closed end.

[0050] The fishing net 11 is positioned in the fishing net bag 12, and the entrances of the two are overlapped and connected by iron rings, so that two nets have one entrance altogether.

[0051] 2) Site selection

[0052] see figure 1 , select the river channel 2 at the gentler place of the mountain stream as the fishing site, and the water depth of the channel 2 is below 30cm. The river chann...

Embodiment 2

[0069] Channel 2 is a bifurcated channel.

[0070] see Figure 6 , the bifurcated river channel is divided into two streams by the river center island 7 from the horizontal middle, and the two streams converge into one stream not far downstream; the stone dam 3 in the bifurcated channel should be at the bifurcation Completely block the channel on the higher side of the river bed and let the water flow away from the channel on the lower side of the river bed.

[0071] Others are with embodiment 1.

Embodiment 3

[0073] River channel 2 is a wide water surface channel;

[0074] Wide-surface river means that the water surface of the river is wide, there are no small islands, and the water flow does not fork. On the side, the water flow has a lateral flow at this place; the length of the stone dam 3 in the wide water surface channel will be built up to the position where the water flow lateral flow is not obvious.

[0075] The completed picture of the wide water surface channel is as follows Figure 4 shown.

[0076] Others are with embodiment 1.

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Abstract

The invention discloses an ecological catching method for small-sized mountain stream fishes. The method includes the following steps that 1, a tool is prepared; 2, site selection is conducted; 3, a stone dam is constructed; 4, a plastic film is laid; 5, transverse furrows and longitudinal furrows are dug; 6, a fishing net is placed; 7, the net is drawn; 8, a riverbed is recovered. According to the ecological catching method, the life habit that the small-sized mountain stream fishes can go upstream when the water level is lowered so as to avoid stranding is ingeniously utilized; the fish catching tool is cheap, simple and easy to obtain, mechanical operation is avoided, and no consumable items and chemicals exist, the original natural environment can be recovered quickly, and environmental protection is achieved; the fishing net is ingeniously divided into a fish catching net area and a fish containing net area, the fishes entering the net cannot escape easily, and the fishing effect is good; moreover, the size of meshes is 10 mm, juvenile fishes less than one year old can be filtered out, only adult fishes of more than one year old are caught, and regeneration of fish resources is effectively protected on the basis of rational fishing.

Description

technical field [0001] The invention belongs to the field of fish fishing methods, and in particular relates to an ecological fishing method for small fish in streams. Background technique [0002] Fishery is a way for people to develop natural resources, and it is also a means for residents near water to obtain economic income. In the streams deep in the mountains, there are many small fishes with high economic value and nutritional value, but due to the special terrain of the streams, manual fishing is extremely difficult. Most people fish by illegal methods such as poisoning fish, electric fish, and frying fish, which has caused great damage to the natural environment and fish resources. Through consulting a large amount of information and field investigation, it is found that stream fish are very sensitive to water level and temperature, because the water level of streams changes rapidly, and stream fish have the habit of going upstream when the water level is low in or...

Claims

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Application Information

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IPC IPC(8): A01K69/02
CPCA01K69/02
Inventor 苏时萍吴谢强韦众李西雷张晓华鲍传和万全
Owner ANHUI AGRICULTURAL UNIVERSITY
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