CN213044767U

CN213044767U - Temporary crayfish breeding device

Info

Publication number: CN213044767U
Application number: CN202020314420.8U
Authority: CN
Inventors: 何志刚; 王冬武; 孙国安; 李金龙; 秦勇; 曾诚; 李传武; 伍远安
Original assignee: HUNAN FISHERIES SCIENCE INSTITUTE
Current assignee: HUNAN FISHERIES SCIENCE INSTITUTE
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2021-04-27
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a crayfish device of raising temporarily, including open-top and the box with a net that exposes the surface of water, locate box with a net top inboard all around prevent escaping the membrane and lie in the box with a net external insertion sediment with the fixed dead lever of box with a net, box with a net bottom four corners has suspended in midair the sinker. The utility model discloses rational in infrastructure, it is easy to draw materials, simple manufacture, low cost adapts to the existence after the crayfish is caught, makes things convenient for the later stage to catch at any time.

Description

Temporary crayfish breeding device

Technical Field

The utility model belongs to the aquaculture device, concretely relates to cray device of raising temporarily.

Background

Crayfish, the academic name procambarus clarkia: (Procambarusclarkii) The shrimp tail meat is tender and delicious, the dish serving product of a restaurant is evolved from the traditional night-night matching in nearly five years, the shrimp tail meat is deeply loved by consumers, the fire explosion of a consumption market drives the crayfish breeding industry to grow rapidly, and the total output value of the crayfish industry in 2018 reaches 3690 hundred million yuan. The crayfish is mainly cultivated in a paddy field, the yield of the crayfish cultivated in the paddy field in 2018 is 118.65 ten thousand tons, and the cultivation area is 1261 ten thousand mu, and the crayfish cultivation area respectively accounts for 72.4% and 75.1% of the total yield and the total area. In 2019, the crayfish breeding yield is steadily increased, the source of goods is sufficient, the consumption market is rather exposed to cold tide, the consumer returns to rationality after crayfish crazy for five consecutive years, and from 5 months to 9 months, the terminal price of the crayfish does not have an obvious high peak value and is in low-order operation compared with the crayfish in the past year.

The traditional rice shrimp mode breeding drawbacks are as follows: (1) the crayfish breeding time is short and concentrated. Flooding the rice field, putting shrimp seedlings in the early 3 months, breeding the shrimp seedlings to come into the market in the early 5 months after two months, and selling the shrimp seedlings to the bottom of 6 months successively, wherein farmers catch the shrimp seedlings in the window period of the rice planting in the water-returning and sun-drying field in the early 7 months, intensively catch the shrimp seedlings and come into the market, so that the price of the crayfish falls all the way, the minimum number of the crayfish falls to 6 yuan/jin in 2019, and most of the farmers are damaged; (2) crayfish supplies are out of stock for a long period of time. The crayfish is bred in the rice field from 5 months to 7 months and is in the market peak, the crayfish is caught in the large water body for sale in 8-9 months, the crayfish is valuable after 10 months and is not available, compared with other aquatic products, the crayfish is stably supplied with a source all the year round, the shortage time of fresh crayfish is as long as half a year, and the demand of consumers is difficult to meet; (3) the market size of the crayfish is smaller. The crayfishes in the rice field in 6-7 months are concentrated in the marketing period, and a part of the crayfishes do not reach the large-specification standard more than 5 money and are sold by farmers in the small-specification general-purpose mode, so that the specification and quality impression of the crayfishes by consumers are influenced, and the breeding profit is reduced.

The particularity of the life habit of the crayfish is as follows: (1) the crayfishes have the habit of digging holes to the bottom of soil to avoid summer heat in high-temperature seasons, the depth of the holes can reach 110cm at most, and the crayfishes rarely go out of the holes after entering the holes, so that the crayfishes are difficult to be captured by a ground cage of a capturing tool; (2) the crayfish is bred once a year, the breeding period lasts from 7 months to 12 months according to different individual specifications and development periods, the crayfish is dug, mated, laid eggs and hatched seedlings after the breeding period begins, and the female crayfish is basically not out of the hole and is difficult to capture; (3) after the crayfishes enter winter, the crayfishes in the rice field can not go out of the hole and seek food until the air temperature rises in 3 months, and then the crayfishes enter a ground cage to be caught, so that the crayfishes in the rice field are difficult to catch to sell in the market during winter, and the crayfishes are out of stock in the market but the consumers have vigorous demands.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a device is supported temporarily to the defect of prior art, provides the crayfish that can prolong the time of surviving after fishing.

Realize the utility model discloses the technical scheme that the purpose was adopted as follows:

the utility model provides a crayfish device of raising temporarily, including open-top and the box with a net that exposes the surface of water, locate box with a net top inboard all around prevent escaping the membrane and be located the box with a net external insertion sediment with the fixed dead lever of box with a net.

Sinkers are suspended at four corners of the bottom of the net cage.

Four sides of the top and the bottom of the net cage are provided with steel ropes which are penetrated into and supported by the steel ropes and extend outwards.

The anti-escape membrane is twisted on a steel rope at the top of the net cage by needles and wires.

The net cage is tied and tied on the fixed rod through the top and bottom rope ropes.

When the fixed rod is inserted into the bottom mud, the fixed rod inclines towards the outer side of the net cage.

Proper aquatic plants are transplanted into the net cage for the crayfishes to shade and inhabit, and a certain amount of bamboo cylinders are put in the net cage for the crayfishes to exuviate and hide.

The net cage is 2m long, 1m wide and 1m high, is woven by nylon knotless net sheets, the net sheets are 12-20 meshes in specification, and 20-40cm of net cage upper part is exposed out of the water surface.

The net cages are of a multi-row longitudinal row structure, and passageways capable of allowing boats to pass through are formed among the net cages in each row.

One side of each two net cages in each row of net cages is leaned against each other, and adjacent net cages are fixed by four fixing rods.

Advantageous effects

The utility model discloses rational in infrastructure, it is easy to draw materials, simple manufacture, low cost adapts to the existence after the crayfish is caught, makes things convenient for the later stage to catch at any time.

The utility model discloses can be according to market supply and demand relation, according to the life habit of crayfish, build the box with a net, transplant the pasture and water, catch or purchase the crayfish after, place according to specification size classification and support temporarily in different box with a net, wait that holiday market prices such as national celebration, cell-dan, spring festival go high and sell on the market again, when crayfish staggers the peak and goes on the market and satisfy consumer's demand, obtain more ideal selling price, promote the breed profit of raiser by a wide margin.

The technical scheme of the utility model is further explained in the following with the attached drawings.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the usage state of the present invention.

Detailed Description

Referring to fig. 1, the temporary crayfish breeding device provided by the utility model comprises a net cage 1 with an open top, a net cage rope 2, an anti-escape membrane 3 and a fixing rod 4, wherein the anti-escape membrane 3 and the fixing rod 4 are arranged around the inner side of the top of the net cage 1, the net cage 1 is a box body with peripheral side nets and bottom nets which are sewed together, the top is free of a net cover, and the upper side part of the net cage 1 is exposed out of a water surface a; the four sides of the top and the bottom of the net cage 1 are provided with steel ropes 2 which are penetrated and supported and extended, and the total number of the steel ropes 2 is eight; the anti-escape film 3 is twisted on the steel rope 2 at the top of the net cage 1 by needles and wires to prevent crayfish from climbing and escaping from the net cage 1; the fixing rod 4 is deeply pricked into the sediment b, the steel ropes 2 at the top and the bottom of the net cage 1 are tied on the fixing rod 4, and when the fixing rod 4 is vertically inserted into the sediment b, the fixing rod can incline 15 degrees towards the outer side direction of the net cage 1 so as to tighten the net cage 1 by certain pulling force after tying the steel ropes 2. Proper water plants can be transplanted in the net cage 1 for the crayfishes to shade and inhabit; a certain amount of bamboo tubes c can be put into the net cage 1 for the crayfish to exuviate and hide; four corners of the bottom of the net cage 1 are suspended by sinkers 5, so that the bottom of the net cage 1 does not float on the water surface a, the space of the cage body is maintained, and the bottom net is prevented from floating to extrude the activity space of the crayfish.

The above technical solution can be further optimized as follows:

the net cage is 2m long, 1m wide and 1m high, the net cage 1 is woven by nylon knotless net sheets, the net sheets are 12-20 meshes, the height of the steel ropes 2 tied on the fixed rods 4 can be adjusted according to the depth of the water level of the rice field, and 20-40cm of the upper part of the net cage 1 is ensured to be exposed out of the water surface a.

The net cage steel ropes 2 are made of rubber wires, and the four corners of the top and the bottom of the net cage 1 are provided with eight steel ropes 2 with the extension of 100 cm.

The net cage escape-proof film 3 is 25-30cm long and made of transparent or black polyethylene film.

The height of the fixed rod 4 is 1.5-1.8m, the diameter is 3-5cm, and a wood rod, a bamboo rod or a steel pipe is adopted.

The shackle is hung at the top of the fixed rod 4, and a nameplate can be arranged to mark the temporary rearing varieties, specifications and density.

The aquatic weed is selected from hydrilla verticillata, watermifoil and waterweed, and covers the net cage area 2/3.

The diameter of the bamboo tube c is 4-8cm, the single bamboo tube c is bamboo joints in the middle, and bamboo tube spaces are respectively arranged at two ends of the bamboo tube c for the crayfish to enter, hide and inhabit, so as to avoid fighting and killing each other.

The sinker adopts small bricks, stones and cobblestones.

The utility model discloses during the use, can be same specification with the crayfish according to per 10g weight, distribute to different box with a net and support temporarily, when avoiding big or small disparity to compete the cull, still can realize accurate throwing and feeding and play the fishing in a flexible way. A plurality of net cages 1 can be arranged into a multi-row longitudinal row structure, a passage d is formed between the net cages in each row for a boat to pass through, and feed can be conveniently put into each net cage 1, as shown in fig. 2. It is also possible to lean two net cages 1 of each row of net cages together on one side, and adjacent net cages 1 can share the fixing rod 4 for tying the steel ropes 2. One net cage 1 is provided with four fixing rods 4, only twenty two net cages 1 are needed for ten adjacent net cages 1, and eighteen fixing rods are saved compared with the independent arrangement of the same ten net cages 1.

Claims

1. A temporary crayfish breeding device is characterized by comprising a net cage, an escape-proof membrane and a fixing rod, wherein the net cage is connected with a bottom net through side nets at the periphery, a net cover is not arranged at the top of the net cage, the net cage is open and exposed out of the water, the escape-proof membrane is arranged on the periphery of the inner side of the top of the net cage, the fixing rod is positioned outside the net cage and inserted with bottom mud to fix the net cage, and sinkers are suspended at.

2. The crayfish temporary rearing device according to claim 1, wherein the cage is supported and extended by a plurality of ropes on four sides of the top and bottom thereof.

3. The crayfish temporary rearing device according to claim 2, wherein the escape prevention film is twisted with a needle wire on a top wire rope of the net cage.

4. The crayfish temporary rearing device according to claim 3, wherein the net cage is tied to the fixing rod by top and bottom rope ropes.

5. The crayfish temporary rearing device according to claim 1, wherein the fixing rods are inclined in a direction outside the net cage when inserted into the bottom sediment.

6. The temporary crayfish breeding device as claimed in claim 1, wherein aquatic plants are transplanted into the net cage for the crayfish to live in a shade and a certain amount of bamboo tubes are thrown for the crayfish to be molted and hidden.

7. The temporary crayfish breeding device as claimed in claim 1, wherein the net cage is 2m long, 1m wide and 1m high, the net cage is woven from nylon knotless net sheets, the net sheets are 12-20 mesh in size, and 20-40cm of the upper part of the net cage is exposed out of the water.

8. The temporary crayfish culture device as claimed in claim 1, wherein the net cages are arranged in a plurality of rows and a plurality of columns in a longitudinal row, and passages through which ships can pass are formed between the rows of net cages.

9. The crayfish temporary rearing device according to claim 8, wherein one side of each two net cages in each row of net cages is close to each other, and adjacent net cages are fixed by four fixing rods.