CN104126552B - A kind of pond adult shrimp catch method - Google Patents

Abstract

The invention discloses a method for catching adult shrimp in a pond, which comprises the following steps: setting a rotary aerator at the center of the pond where the shrimp is cultivated, and setting a plurality of shoal arc-shaped nets around the rotary aerator. The shoal arc-shaped net is set at 2~3cm below the water level of the pond, and multiple waterwheel aerators are installed at the edge of the pond. When adult shrimps are caught, the rotary aerator and waterwheel aerator are simultaneously turned on The aeration machine forms a water body circulation in the center of the pond and around the pond, and shrimps of various sizes swim under the drive of the water flow. When the shrimps of various sizes swim to the curved net of the shoal, they will crawl on the curved net of the shoal , retreat and crawl on the surface of the net, and at this time selectively catch adult shrimp. The method can be staged or select adult shrimps, is simple and convenient, saves time, effort and cost.

Description

A kind of catch method of pond adult shrimp

technical field

The invention belongs to the technical field of aquatic products, and in particular relates to a method for catching adult shrimps in ponds.

Background technique

Shrimp organisms are an important species in the data collection of fishery resources research organisms, the proliferation and release of fishery resources, and the collection of aquaculture adults. In the traditional pond culture production process, it is the method of draining the pond during the harvest season. But if it is collected in stages or selectively, it will be difficult and affect production.

Contents of the invention

The object of the present invention is to provide a method for catching adult shrimps in ponds, which can catch adult shrimps in stages or selectively, which is simple and convenient, saves time, labor and cost.

The above object of the present invention is achieved through the following technical solutions: a method for catching adult shrimp in a pond, comprising the following steps: a rotary aerator is set at the center of the pond where the shrimp is cultivated; A plurality of shoal arc-shaped nets are arranged on the periphery, and the shoal arc-shaped nets are arranged at 2 to 3 cm below the pond level, and a plurality of waterwheel type aerators are also arranged at the edge of the pond. When catching adult shrimps, simultaneously Turn on the rotary aerator and the waterwheel aerator to form a water circulation in the center of the pond and around the pond, and shrimps of various sizes swim under the drive of the water flow. When the shrimps of various sizes swim to the Can crawl on the curved net of the shoal during the curved net of the shoal, retreat and crawl on the surface of the net, and at this moment, it is final to selectively catch adult shrimps.

In the method of catching adult shrimp in the above pond:

The arc-shaped surface of the shoal arc-shaped net faces the direction of the water surface.

The shoal arc-shaped net is composed of a frame and an arc-shaped mesh, and the arc-shaped mesh is fixed on the frame.

The shoal arc-shaped net is fixed below the water surface through fixed piles arranged at the bottom of the pond.

A clasp for fixing it on the fixed pile is provided around the periphery of the shoal arc net, and the clasp can move up and down along the fixed pile.

The number of the water wheel aerators is preferably 3-6.

An operation bridge that is convenient for people to stand and catch adult shrimps is arranged above the curved net in the shoal.

A temporary small cage for holding adult shrimps is also arranged on the operation bridge.

When adult shrimps are caught in the present invention, it is best to choose to work at night. The habit of shrimps will float on the water surface at night. At that time, the aerator is turned on to form a water body circulation in the center of the pond and around the pond. Driven by the current, when swimming in groups, they will crawl on the shoal when encountering a shoal-like ecological environment. Using this ecological habit, the shoal arc network imitates this ecological condition, and the group swimming shrimps will crawl on the shoal arc network. Crawl backwards with the direction of the tail, and the people just can choose arbitrarily on the operation bridge, and put in the small net cage of temporarily raising.

The present invention has the following advantages:

(1) Easy to operate, time-saving, labor-saving and cost-saving;

(2) It can be selected at will, avoiding the cumbersome operations brought about by the previous large-scale collection, and will not harm other individuals at the same time;

(3) This method has great application prospects in both biological measurement research and fishery production.

Description of drawings

Fig. 1 is the schematic diagram of the method that pond adult shrimp catches of the present invention, wherein 1 is a rotary aerator, 2 is a waterwheel type aerator, 3 is a shoal arc net, 4 is a fixed pile, and 5 is an operating bridge;

Fig. 2 is a schematic diagram of the installation of the shoal arc net, in which 6 is the snap ring and 7 is the water surface;

Fig. 3 is the plane view of the curved net in the shallows, wherein 8 is a small net cage for temporary support.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

The catching method of the pond adult shrimp provided by the present embodiment comprises the following steps:

(1) As shown in Figure 1-3, a rotary aerator 1 is installed in the center of the pond for cultivating shrimp. The function of the rotary aerator is mainly to drive the water body to form a vortex;

(2) Multiple shoal arc-shaped nets 3 are installed around the rotary aerator 1. There can be 4 sets of shoal arc-shaped nets. The number can be changed according to different needs. The shoal arc-shaped nets are set 2~3cm below the level of the pond , the shoal arc-shaped net has a rectangular plane shape and an arc-shaped facade, wherein the arc-shaped surface of the shoal arc-shaped net faces the direction of the water surface. The shoal arc-shaped net is composed of a frame and an arc-shaped net. Fixed on the frame, the shoal arc-shaped net is fixed below the water surface through the fixed pile 4 at the bottom of the pond. The frame can be made of stainless steel or plastic material to play the role of opening and fixing the mesh. The mesh is braided with thick polyvinyl chloride wire Made of dense mesh, fixed on the frame, the shoal curved net is installed about 2 to 3 cm below the horizontal surface, so that when the shrimp passes through this surface, it is exposed to the human perspective, so that it is convenient to observe and collect the shrimp bodies that meet the specifications, and the rest After passing through this surface, they crawl back into the water body of the pond and continue to move and grow;

(3) A number of waterwheel aerators 2 are installed at the edge of the pond. The number of waterwheel aerators can be 3 to 6, which can be determined according to the size and shape of the pond. When the shape of the pond is quadrilateral , you can set up 4 aerators. When the shape of the pond is circular, you can also set up 3 aerators. The edge of the pond is a shallow water area. Quiet, which is not conducive to the growth of shrimp. The water wheel aerator paddles the surface water around the edge of the pond to flow in a certain direction, and will not impact the bottom of the pond;

(4) When catching adult shrimp, turn on the rotary aerator and the waterwheel aerator at the same time to form a water circulation in the center of the pond and around the pond, and shrimps of various sizes swim under the drive of the water flow. Shrimp of large or small size can crawl on the curved net of shallow shoal when swimming to described shoal curved net, retreat and climb on the net surface, and now selective catch adult shrimp gets final product.

There is a clasp 6 for fixing it on the fixed pile at the periphery of the curved net in the shoal. The clasp can move up and down along the fixed pile 4; The operating bridge 5 can also be provided with a small cage 8 for holding adult shrimp temporarily on the operating bridge 5.

Wherein the fixed pile 4 can be respectively at four end points of the shoal arc net 3 and four fixed points of the operation bridge 5 in the middle. Firmly piling at the bottom of the pond, fix the shoal arc net 3 on the fixed pile 4, which can resist the impact of water flow, and the end point of the shoal arc 3 has a stainless steel snap ring 6 set on the fixed pile 4, which plays the role of adjusting the height of the water level. Then tie it tightly with a rope.

The operation bridge 5 can be paved with planks or bamboo tubes, which is convenient for people to stand and operate on it, and needs to be 30 to 40 centimeters away from the water surface. Temporary support small net cage 8 can be mounted on the fixed stake 4 that is used for fixing operation bridge 5, and the adult shrimp that obtains is picked and placed in the temporary support small net cage for stocking and storing.

Example 2

The area of the shrimp farming pond is 8 mu, square, the water depth in the center of the pond is 2 meters, and the edge of the pond is in the shape of a gentle slope, and the density of 15,000 tails per mu is used for culturing Penaeus monodon. Technical requirements, feeding, disease prevention, and production are managed according to routine scientific management. After 120 days of growth, 5,000 adult shrimps with a size of 12 cm are selected and released for scientific research.

Set a rotary aerator at the center of the pond, and set 4 sets of shoal arc-shaped nets around the rotary aerator. There are 4 waterwheel aerators, which start to operate at 20 o'clock in the evening. At the same time, the rotary aerator and the waterwheel aerator are turned on to form a water circulation in the center of the pond and around the pond. Shrimp of various sizes Driven by the current to swim, when shrimps of various sizes swim to the shoal curved net, they will crawl on the shoal curved net, retreat and crawl on the surface of the net, and there is a set above the shoal curved net that is convenient for people to stand and catch. The operating bridge for adult shrimp is also equipped with a small temporary cage for holding adult shrimp on the operating bridge. Observe on the operating bridge, pick up and stock the adult shrimp that meet the specifications in the small temporary cage, and measure them separately , Individuals that do not meet the specifications are returned to the pond for breeding. After the end, the aerators are turned off, and the related facilities are dismantled (some fixed facilities that do not affect production do not need to be dismantled), and normal breeding production resumes.

Example 3

The area of the shrimp farming pond is 12 mu, rectangular, the water depth in the center of the pond is 2 meters, and the edge of the pond is in the shape of a gentle slope. Intensive farming produces Penaeus vannamei with a density of 12,000 tails per mu. Technical requirements, feeding, disease prevention, and production are managed according to conventional science (not detailed), and after 150 days of growth, harvested shrimp with a size of 10 cm are marketed.

Set a rotary aerator at the center of the pond, and set 6 sets of shoal arc-shaped nets around the rotary aerator. There are 6 waterwheel aerators, which start to operate at 20 o'clock in the evening. At the same time, the rotary aerator and the waterwheel aerator are turned on to form a water circulation in the center of the pond and around the pond. Shrimp of various sizes Driven by the current to swim, when shrimps of various sizes swim to the shoal curved net, they will crawl on the shoal curved net, retreat and crawl on the surface of the net, and there is a set above the shoal curved net that is convenient for people to stand and catch. The operating bridge for adult shrimp is also equipped with a small temporary cage for holding adult shrimp on the operating bridge. Observe on the operating bridge, pick up and stock the adult shrimp that meet the specifications in the small temporary cage, and measure them separately , Individuals that do not meet the specifications are returned to the pond for breeding. After the end, the aerators are turned off, and the related facilities are dismantled (some fixed facilities that do not affect production do not need to be dismantled), and normal breeding production resumes.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplification should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (8)

1. a method for catching adult shrimp in a pond is characterized in that it contains the following steps: a rotary aerator is set at the central position of the pond of culturing shrimp, and a plurality of shoal arc-shaped nets are set around the rotary aerator, The shoal arc-shaped net is set at 2 to 3 cm below the pond level, and multiple water wheel aerators are also arranged at the edge of the pond. When adult shrimps are caught, the rotary aerator and water wheel are turned on at the same time A type aerator, forming a water body circulation in the center of the pond and around the pond, and shrimps of various sizes swim under the drive of the water flow. When the shrimps of various sizes swim to the arc-shaped net of the shoal, they will crawl on the shoal On the arc-shaped net, crawl back and climb on the surface of the net, and at this time selectively catch adult shrimp. 2. The method for catching adult prawns in ponds according to claim 1, characterized in that: the arc-shaped surface of the shoal arc-shaped net faces the direction of the water surface. 3. The method for catching adult shrimps in ponds according to claim 2, characterized in that: said shoal arc-shaped net is composed of a frame and an arc-shaped mesh, and said arc-shaped mesh is fixed on said frame. 4. The method for catching adult shrimps in a pond according to claim 3, characterized in that: the shoal arc-shaped net is fixed below the water surface by fixing piles arranged at the bottom of the pond. 5. The method for catching adult shrimps in ponds according to claim 4 is characterized in that: a snap ring for fixing it on the fixed pile is provided at the periphery of the curved net in the shoal, and the snap ring can be Move up and down along the stake. 6. The method for catching adult shrimps in ponds according to claim 1, characterized in that: the number of said water wheel aerators is 3-6. 7. The method for catching adult prawns in a pond according to any one of claims 1-6, characterized in that: an operation bridge for people to stand and catch adult prawns is arranged above the arc-shaped net in the shoal. 8. The method for catching adult prawns in a pond according to claim 7, characterized in that: a temporary small cage for holding adult prawns is also arranged on the operation bridge.