CN103798119B - Multi-functional duckweed cultivates net cage in pond - Google Patents

Abstract

The invention discloses a pond multifunctional duckweed cultivation net cage, which comprises: a net cage whose upper end surface is an open surface, and which is provided with a sinker; a floating body stopper, which is arranged around the upper end edge of the net cage On the upper end of the net cage; the outer edge net, which is a mesh sheet, is connected with the floating block and is laid around the upper end of the net cage, and is provided with floats to float on the water; the net cage is on the floating block and Under the joint action of the buoyancy of the float and the settling force of the sinker, it is suspended in the water, and the upper half of the floating block is exposed to the water surface and floats on the water surface, and the floating block is provided with at least one feed port. The invention has excellent duckweed cultivation and species preservation functions, can continuously provide edible duckweed for fish, and can purify pond water quality. In addition, the present invention can also cultivate and breed ornamental fish such as goldfish, and can also be used as a cage for temporarily raising fish when necessary.

Description

Pond multifunctional duckweed cultivation net cage

technical field

The invention relates to the technical field of aquaculture, in particular to a multifunctional duckweed cultivation cage in ponds.

Background technique

Duckweed refers to aquatic floating plants belonging to the Duckweed family, such as turnips, small duckweeds, and purple-backed duckweeds. Duckweed has high crude protein and vitamin content, rich nutrition, good palatability, and fast reproduction speed. It is a high-quality bait for herbivorous and omnivorous fish, and it also has certain medicinal value. Using duckweed to raise fish can not only cultivate large and neat fish species, but also has important significance in the cultivation of adult fish. It is an effective way to reduce feed costs and improve economic benefits. In addition, cultivating duckweed in ponds can also purify and regulate water quality.

Duckweed mainly grows on the surface of water bodies, and the suitable growth water temperature is 20-30°C. Duckweed can be cultivated in existing fish ponds or in special ponds. Due to the need to set up a special pond for special pond cultivation, and to invest in special artificial cultivation and fishing for feeding, the cost is high, so this method is not often used, and the method of duckweed cultivation using existing fish ponds is more common. In clear, nutrient-poor water, duckweed not only grows slowly, but is also high in fiber, ash and carbohydrates and low in protein. In contrast, duckweed thrives in nutrient-rich waters and is high in protein and low in crude fiber and ash.

At present, the existing method of duckweed cultivation and fish farming in fish ponds is as follows: after spring, before putting fish species in the pond, a certain amount of duckweed is introduced into the pond. As the temperature gets warmer, the speed of duckweed reproduction Very fast, so the duckweed quickly covered the entire pond. At this time, when the temperature is suitable, fish species are put into the pond for breeding. During the breeding process, as the fish continue to grow, the feed fed to the pond also increases, and the trapped water tends to become more eutrophic. , in theory, this kind of water body is very suitable for the growth of duckweed in the pond, and duckweed should grow very vigorously accordingly. However, it has long been the case that duckweed is not seen at all during adult fish rearing in intensive ponds (unless duckweed is temporarily reintroduced into the pond). The reason is: due to the good palatability of duckweed, with the continuous growth of fish, the duckweed in the whole pond is easily swallowed by fish due to the lack of relevant protection measures for duckweed, which makes it difficult for ponds to grow in adult fish. At the same time, duckweed can be continuously cultivated.

In view of the above-mentioned technical deficiencies, how to enable ponds to continuously cultivate duckweed while cultivating fish is a problem that needs to be solved urgently.

Contents of the invention

In order to overcome the technical defect that duckweed cannot be continuously cultivated in existing ponds for fish farming, the present invention invents a pond multifunctional duckweed cultivation net cage, which can ensure that fish and duckweed are cultivated in the pond at the same time, and can also It is used as a temporary cage for ordinary fish or ornamental fish, and has a simple structure and is easy to use.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A pond multifunctional duckweed cultivation net cage, which comprises:

Net cage, the upper end surface of which is an open surface, and is provided with a sinker;

A floating block, which is arranged on the upper end of the net cage in a manner surrounding the upper edge of the net cage;

The outer edge net, which is a mesh sheet, is connected to the buoy block and laid around the upper end of the cage, and is provided with floats to float on the water;

The net cage is suspended in the water under the joint action of the buoyancy of the buoyancy of the buoyancy block and the float and the sinking force of the sinker, and the upper half of the buoyancy block is exposed to the water surface and floats on the water surface.

Preferably, there are several sinkers and they are hung on the edge of the lower end of the cage.

Preferably, the material of the sinker is stone or metal.

Preferably, the sinker is in the shape of a shuttle or an ellipsoid.

Preferably, there are several floats and they are hung on the edge of the outer edge net.

Preferably, the material of the float is bamboo wood material, plastic or rubber.

Preferably, the float is in the shape of a shuttle or an ellipsoid or a ball.

Preferably, the floating block is made of bamboo wood, plastic or rubber.

Preferably, the floating block is formed by connecting several rectangular parallelepiped floating strips or circular tubular floating tubes.

Preferably, a fixing device is also included for restricting the net cage to stay in a specific area.

Preferably, the fixing device is at least one fixing rod fixed in the pond and fixedly connected with the net cage.

Preferably, the fixing device includes at least one stone and at least one rope connecting the stone to the cage

Preferably, a blocking cover is also included, which can cover the upper end of the floating body blocking block.

Preferably, the floating block is provided with at least one outwardly protruding food opening, and the food opening communicates with the open surface of the upper end of the cage.

Preferably, the outer edge net is connected to the upper end surface of the floating block, and the upper part of the food opening is covered by the outer edge net.

Preferably, there are four food inlets and they are respectively distributed in front, back, left and right directions of the floating block.

Compared with the prior art, the present invention has the following beneficial effects:

1, a kind of pond multifunctional duckweed cultivation net cage of the present invention, the net cage is suspended in the pond water body to carry out duckweed cultivation by the joint action of floating block, float and sinker, and floating block and net cage can prevent floating Duckweed leaves the box or the fish swims into the net cage, and by setting the outer edge net, it can prevent the fish from jumping into the net cage, and it can ensure that the fish and duckweed are cultivated and preserved in the pond at the same time.

2. The further advantages of the present invention are simple structure, good suspension effect, convenient use and low cost.

3. The further advantage of the present invention is that the floating block and the float are made of bamboo, wood, plastic or rubber, and the sinker is made of stone or metal, which is easy to manufacture and low in cost.

4. A further advantage of the present invention is that a food port is provided for fish to eat duckweed, which can automatically feed fish and protect duckweed.

5. A further advantage of the present invention is that it can also be used for cultivating and cultivating goldfish and other ornamental fish. When necessary, it can also be used as a temporary cage for fish, and its applicability is strong.

6. A further advantage of the present invention is that it is provided with a cover, which can be closed on the upper end of the floating body block by the cover to cover the open surface of the net cage in windy or rainy weather, so as to prevent all the duckweed from being blown away by the wind or Blow into food port.

7. A further advantage of the present invention is that it is provided with a positioning device, which can limit the net cages to stay in a specific area, avoid random drifting of the net cages, and facilitate management.

Description of drawings

Accompanying drawing 1 is the three-dimensional structural representation of pond multifunctional duckweed cultivation net cage of the present invention;

Accompanying drawing 2 is the top view of the present invention;

Accompanying drawing 3 is the structure schematic diagram of floating block of the present invention;

in:

1. Cage;

2. sinker;

3. Outer edge network;

4. Float;

5. Food port;

6. Floating block;

7. Rope;

8. Stones.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and in conjunction with specific embodiments, so that those skilled in the art can implement it by referring to the description, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments. It should be understood that "up", "down", "left", "right", "front", and "rear" mentioned in the following embodiments of the present invention are all based on the directions shown in the drawings, These words used to limit directions are only for convenience of description, and do not represent limitations on the specific technical solutions of the present invention.

Example

As shown in Fig. 1 and Fig. 2, a kind of pond multifunctional duckweed cultivates net cage, and it comprises net cage 1, sinker 2, outer edge net 3, float 4, feed mouth 5 and floating body block 6, wherein:

The net cage 1 is trapezoidal or cube-shaped, and the upper end surface of the net cage 1 is an open surface, which is opened to serve as the opening of the net cage 1, and the other sides are mesh surfaces, and the net cage 1 can be sewn with meshes woven with synthetic fibers Formed, the open face of net cage 1 is used for duckweed is cultivated.

The sinker 2 has several and hangs evenly on the four edges of the lower end face of the net cage 1, the sinker 2 needs to provide sufficient settling force for the net cage 1, so its material density should be greater than the density of water, the preferred method of the present invention The material is stone or metal, and the sinker 2 is in the shape of an ellipse or a shuttle, so that it can be bundled and arranged on the edge of the lower end surface of the net cage 1, and the sinker 2 has no edge, which can effectively reduce the wear and tear on the net wire of the net cage 1 .

The floating block 6 is arranged on the upper end of the net cage 1 to surround the upper end of the net cage 1 in the manner of surrounding the four edges of the upper end of the net cage 1, and the four directions of the front, rear, left and right of the floating body block 6 are respectively provided with Four food material mouths 5 protruding outwards, food material mouth 5 are square shapes, and two food material mouths 5 symmetrical distributions before and after, left and right two food material mouths 5 symmetrical distributions, the open face of food material mouth 5 and net cage 1 upper end. Float block 6 needs to float on the water surface and provide buoyancy for net cage 1, so it is the buoyancy material that density should be less than the density of water, and the present invention preferably its material is bamboo wood material, foam, plastics or rubber, its The material can also be other synthetic fiber materials or high molecular polymers. As shown in FIG. 3 , the floating block 6 can be formed by sequentially connecting several cylindrical floating tubes or rectangular parallelepiped floating strips.

The outer edge net 3 is a mesh sheet, its inner side corresponds to the upper end of the net cage 1 and its inner side is connected to the floating pipe stopper 6, and the outer side of the outer edge net 3 extends outwards to lay on the open surface of the upper end of the net cage 1 On the surrounding water surface, several floats 4 are evenly arranged on the outer edge of the outer edge net 3, and the material of the floats 4 is bamboo wood material, foam, plastic or rubber, and its material can also be other synthetic fiber materials or polymer polymers. Object, its profile is shuttle shape or ellipsoid or spherical, and float 4 keeps fringe net 3 to keep unfolding and floats on the water surface to cover the water surface near water tank 1. Because the float 4 needs to float on the water surface and provide buoyancy for the net cage 1, so its material density should be less than the density of water, the preferred material of the present invention is bamboo wood material, foam, plastics or rubber, and its material can also be other synthetic fiber material or polymer.

The net cage 1 is suspended in the water under the joint action of the buoyancy force produced by the floating block 6 and the float 4 and the sinker 2. The floating block 6 floats on the water surface with a part exposed to the water surface to surround the duckweed In the open face of cage 1. The outer edge net 3 can prevent fish from falling into the net cage 1 after jumping up near the net cage 1. Because food mouth 5 communicates with the open surface of net cage 1 upper end, duckweed can flow out to food mouth 5 for fish to eat, and the side of net cage 1 can prevent fish from entering in net cage 1 from food mouth 5 places. The outer edge net 3 can also be set to be connected with the upper end surface of the floating block 1, and the top of the food port 3 is covered by the outer edge net 3, and the outer edge net 3 can also prevent fish from jumping into the cage from the food port 5 1 in. When duckweed grows and is covered with the open surface of net cage 1, duckweed just can be extruded in the feed mouth 5, simultaneously because outer edge net 3 outside also floats on the water surface, so outer edge net 3 can also prevent duckweed Diffuse outwards to concentrate the duckweed in the food port 5 .

In order to prevent the duckweed from being blown away in windy or rainy weather and leaving the cage 1, a cover (not shown in the figure) can be provided in addition, and the cover can be a mesh sheet or other flat objects , when needed, cover the upper end of the floating block 6 by the cover cover to cover the open surface of the net cage 1, so as to avoid that the duckweed is all blown into the food port 5 by the wind.

In addition, in order to limit the net cage 1 to stay in a specific area to facilitate cultivation and management, a positioning device can also be set to avoid the net cage from drifting arbitrarily. The positioning device includes at least one heavier stone 8 and at least one rope 7 that connects the stone 8 to the net cage 1. The stone 8 sinks at the bottom of the pond and pulls the net cage by the rope 7, which can limit the direction of the net cage 1. Drift in the distance. The positioning device can also be several positioning rods (not shown) that are fixed in the pond and are connected with the net cage 1.

The present invention can connect net box 1, floating body block 6, outer edge net 3, float 4 and sinker 2 into a whole by net wire and key rope. When duckweed is placed in the open surface of net cage 1 of the present invention and cultivated, fish can be prevented from jumping into net cage 1 or duckweed leaves net cage 1, and fish can only ingest duckweed through feeding port 5, which can Effectively prevent duckweed from being consumed due to excessive fish consumption. The invention has excellent functions of duckweed cultivation and species preservation, can continuously provide edible duckweed for fish, and can also purify pond water quality. In addition, the present invention can also cultivate and breed ornamental fish such as goldfish, and can also be used as a net cage for temporarily raising fish when necessary.

The above disclosures are only specific embodiments of the present invention, but the present invention is not limited thereto, and any changes conceivable by those skilled in the art should fall within the protection scope of the present invention.

Claims (9)

1. A pond multifunctional duckweed cultivation net cage is characterized in that: it comprises: Net cage, the upper end surface of which is an open surface, and is provided with a sinker; A floating block, which is arranged on the upper end of the net cage in a manner surrounding the upper edge of the net cage; The outer edge net, which is a mesh sheet, is connected to the buoy block and laid around the upper end of the cage, and is provided with floats to float on the water; The net cage is suspended in the water body under the combined action of the buoyancy of the buoyancy of the buoyancy block and the float and the settling force of the sinker, and the upper half of the buoyancy block is exposed to the water surface and floats on the water surface. 2. The multifunctional duckweed cultivation net cage for ponds according to claim 1, characterized in that: there are several sinkers and they are hung on the edge of the lower end of the net cage. 3. The pond multifunctional duckweed cultivation net cage according to claim 2, characterized in that: the material of the sinker is stone or metal. 4. The pond multifunctional duckweed cultivation net cage according to claim 1, characterized in that: said floats are several and hung on the edge of said outer edge net. 5. The pond multifunctional duckweed cultivation net cage according to claim 4, characterized in that: the material of the float is bamboo wood material, plastic or rubber. 6. The multifunctional duckweed cultivation net cage in a pond according to claim 1, characterized in that: the material of the buoy block is bamboo wood material, plastic or rubber. 7. The net cage for multifunctional duckweed cultivation in a pond according to claim 1, further comprising a fixing device for limiting said net cage to stay in a specific area. 8. according to the pond multifunctional duckweed cultivation net cage described in any one in claim 1-7, it is characterized in that: described floating block is provided with at least one outwardly protruding feed mouth, and described feed mouth and The open surfaces of the upper ends of the net cages communicate with each other. 9. The multifunctional duckweed cultivation net cage for ponds according to claim 8, characterized in that: there are four feed ports and they are respectively distributed in front, back, left and right directions of the floating block.