A three-dimensional culture device for freshwater shrimp deep water net nest

Abstract

The utility model discloses a kind of deep-water net nest three-dimensional aquaculture devices of green shrimps, including pond, the pond is provided with multiple food tables along transverse at the place of a meter below water surface, adjacent the food table is spaced b meter between, the distance of food table and pond bottom is c meter, the pond is densely covered with multiple net nests, the bottom of net nest directly above the food table extends to food table, the bottom of remaining net nest extends to pond bottom, the pond is also provided with bottom water exposure water level regulating oxygenation machine and oxygenation fan, a, b, c are constant. The utility model is by constructing "net nest+food table" three-dimensional habitat space, and is matched with precise oxygenation water level regulating system, to realize efficient, high-quality, ecological breeding of green shrimps.

Description

Technical Field

[0001] This utility model relates to a deep-water net nest three-dimensional aquaculture device for freshwater shrimp. Background Technology

[0002] The freshwater prawn (scientific name: *Macrobrachium nipponense*) is one of the most abundant freshwater prawn species, prized for its good taste, delicate texture, and high nutritional value. In recent years, rising prawn prices have boosted farmers' enthusiasm for shrimp farming. However, factors such as low seasonal yields, high farming difficulty, high disease rates, and rising costs have constrained the development of the shrimp farming industry, leading to decreased profitability. Traditional farming methods suffer from problems such as low pond carrying capacity, poor prawn habitats (e.g., reliance on aquatic plants, which consume fertilizer, provide shade, reduce photosynthesis, lower water temperature, and damage molting shrimp by manually removing them, leading to disease; and insufficient oxygenation at the bottom of the pond or among aquatic plants, resulting in weak light, poor dissolved oxygen, and low water quality), and inadequate aeration for deep-water conditions. These issues contribute to low yields, high disease rates, and the excessive use of drugs, which damages the water and soil environment and affects shrimp quality. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp, effectively solving the problems mentioned in the background art.

[0004] The technical solution adopted in this utility model is:

[0005] A deep-water net-nest three-dimensional aquaculture device for freshwater shrimp includes a pond. Multiple feeding platforms are arranged horizontally at a distance *a* meters below the water surface. Adjacent feeding platforms are spaced *b* meters apart. The distance between each feeding platform and the bottom of the pond is *c* meters. The pond is densely covered with multiple net nests. The bottom of the net nest directly above a feeding platform extends to the platform, while the bottoms of the remaining net nests extend to the bottom of the pond. The pond is also equipped with a bottom water aeration and oxygenation machine and an aeration fan. *a*, *b*, and *c* are constants.

[0006] Preferably, the bottom water exposure and aeration machine is used to transport water below the feeding platform to the surface of the pond, and the aeration fan is used to transport air into the water below the feeding platform to oxygenate the water.

[0007] Preferably, the feeding platform includes a net and a support frame for shaping the net. The bottom of the support frame is supported on the bottom of the pond by a support rod, and the four corners are fixed to the edge of the pond by ropes.

[0008] Preferably, the netting is made of dense mesh, which has the smallest mesh size, making it easier to hold the bait.

[0009] Preferably, a is 0.8-1.2, b is 1, and c is 0.6-1.2.

[0010] Preferably, the two ends of the feeding platform extend to both sides of the pond, with a width of 8-10 meters.

[0011] Preferably, the net nest has a structure that is smaller at the top and larger at the bottom, and the top of the net nest is exposed above the water surface. The upper parts of all the net nests are connected together by connecting ropes. The upper parts of the net nests located at the edge of the pond are fixed to the edge of the pond by fixing ropes. All the net nests have a float fixed to their upper parts.

[0012] Preferably, the float is wrapped with a mesh bag.

[0013] Preferably, the net nests are set up at a density of 1,500-2,000 clusters per acre.

[0014] Preferably, the bottom of the pond is flat and the area of ​​the pond is 10 mu (approximately 1.65 acres).

[0015] The beneficial effects of this utility model are as follows:

[0016] I. Three-dimensional innovation in the utilization of aquaculture space:

[0017] Breaking away from the traditional flat habitat model of prawn farming that relies on the bottom of the pond and aquatic plants, a three-dimensional spatial structure of "net nest + feeding platform" has been constructed. The lantern-shaped net nest is suspended above the feeding platform, forming a vertical habitat zone from 10 cm to 1.2 meters below the water surface. 1500-2000 net nests are set up per acre, which expands the prawn habitat space to more than 5 times that of the traditional model. This three-dimensional layout allows prawns to move freely in different water layers, making full use of the planktonic resources in each water layer, while avoiding the cannibalistic problem caused by space competition in traditional aquatic plant farming.

[0018] II. Functional Innovation of Artificial Habitats:

[0019] Using artificial netting nests instead of natural aquatic plants solves a series of drawbacks associated with traditional aquaculture:

[0020] 1. The net nest adopts a lantern-shaped structure design, which not only provides concealment and protection for the shrimp during molting, but also ensures smooth water flow and avoids water quality deterioration caused by the decay of aquatic plants.

[0021] 2. The nesting material is stable and will not wither with the seasons like aquatic plants, ensuring a constant habitat environment;

[0022] 3. The spacing between the net nests is uniformly set to form regular habitat units, which facilitates the even distribution of shrimp and reduces density pressure;

[0023] III. Precision Innovation in Feeding Systems:

[0024] A sunken net feeding platform was designed and fixed at a depth of 1.2 meters underwater. It employs a panel layout of 8-10 meters wide with 1-meter intervals, achieving comprehensive feeding coverage throughout the pond. The innovative value of this design lies in:

[0025] 1. The feeding platform depth is precisely matched with the nesting area of ​​the net, which minimizes the feeding path of the shrimp and reduces energy consumption;

[0026] 2. The mesh material facilitates the cleaning of uneaten bait and prevents bait accumulation and pollution at the bottom of the pond;

[0027] 3. The modular structure allows for control over the amount and area of ​​feed, facilitating observation of feeding and dynamic adjustments, thereby increasing feed utilization by more than 30%.

[0028] IV. Intelligent Innovation in Water Quality Control:

[0029] The first dual-mode control system combining "bottom water exposure aerator + nighttime blower" is introduced.

[0030] 1. During the day, use the bottom water exposure and aeration machine to turn the bottom water layer to the surface, release harmful substances through photosynthesis, and promote the reproduction of plankton, thus achieving the three-in-one function of "water conditioning + aeration + cultivation of natural bait".

[0031] 2. At night, fans are used to provide targeted oxygenation under the netting to create a localized high dissolved oxygen zone, precisely meeting the dissolved oxygen requirements of the shrimp during their nighttime activities;

[0032] 3. This time-based and zone-based control method saves more than 50% more energy than traditional aeration equipment and can maintain the optimal state of water quality: "fertile, lively, refreshing, and tender".

[0033] This invention achieves efficient, high-quality, and ecological shrimp farming by constructing a three-dimensional habitat of "net nest + feeding platform" and combining it with a precise oxygenation and water regulation system. Attached Figure Description

[0034] Figure 1 This is a side view of the present invention.

[0035] Figure 2 for Figure 1 Enlarged view of part A;

[0036] Figure 3 This is a top view of the structure of this utility model;

[0037] Figure 4 This is a schematic diagram of the food station structure. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0039] like Figure 1-4 As shown, a deep-water net-nest three-dimensional aquaculture device for freshwater shrimp includes a pond 1. Multiple feeding platforms 2 are arranged horizontally in the pond 1 at a distance of 0.8-1.2 meters below the water surface. Adjacent feeding platforms 2 are spaced 1 meter apart. The distance between the feeding platform 2 and the bottom of the pond 1 is 0.8-1.2 meters. Multiple net nests 3 are densely distributed within the pond 1. The bottom of the net nest 3 located directly above the feeding platform 2 extends to the feeding platform 2, while the bottoms of the remaining net nests 3 extend to the bottom of the pond 1. The pond 1 is also equipped with a bottom water aeration and regulation aerator 4 and an aeration fan 5. a, b, and c are constants.

[0040] The bottom water exposure and aeration machine 4 is used to transport water below the feeding platform 2 to the surface of the pond 1. For example, a bottom water exposure and aeration machine mentioned in Chinese Patent No. CN202421503279.0 can be used. The aeration fan 5 is used to transport air into the water below the feeding platform 2 to oxygenate the water.

[0041] The feeding platform 2 extends to both sides of the pond 1 at both ends, with a width of 8-10 meters. The feeding platform 2 includes a net 21, which is made of dense mesh, and a support 22 for shaping the net 21. The bottom of the support 22 is supported on the bottom of the pond 1 by a support rod 23, and the four top corners are fixed to the edge of the pond 1 by ropes 24.

[0042] The net nest 3 has a lantern-shaped structure that is smaller at the top and larger at the bottom, with the top of the net nest 3 protruding 10cm above the water surface. The upper parts of all net nests 3 are connected together by connecting ropes 31. The upper parts of net nests 3 located at the edge of the pond 1 are fixed to the edge of the pond 1 by fixing ropes 32. All net nests 3 have floats 33 fixed to their upper parts. The matching arrangement of connecting ropes 31 and fixing ropes 32 allows all net nests 33 to be evenly distributed in the pond 1 as required and to be unaffected by the external environment. For example, the setting of floats 33 allows all net nests 3 to be located in the predetermined position. The floats 33 are wrapped with net bags 34. The setting of net bags 34 makes it easy for shrimp to leave the water surface to rest.

[0043] The net nest 3 is set up at a density of 1500-2000 clusters per acre.

[0044] The bottom of pond 1 is flat, and the area of ​​pond 1 is 10 mu.

[0045] When using this device in aquaculture, follow these steps:

[0046] 1. Pond preparation:

[0047] 2. Select a pond with a water depth of no less than 1.8-2 meters, a flat bottom, and an area of ​​about 10 mu. When the shrimp pond is dried, use netting to make artificial grass (i.e., net nests) to provide a habitat for the shrimp, making it easier for them to enter the nest, molt, and hide. Use a frame and the smallest mesh net to make a netting platform 8-10 meters wide as a feeding platform. Lay it horizontally in the pond about 120 cm below the water surface. The bottom of the feeding platform is supported and fixed with support rods, and the four corners are fixed to the edge of the pond with ropes, so that there are almost no empty holes in the pond.

[0048] 2. Seedling release:

[0049] Around March 5th each year, stock each acre with 30-50 kg (1000 shrimp / catties) of molted shrimp seedlings from October-November of the previous year. The seedlings come from multiple regions to reduce inbreeding. At the same time, fish fry and loach fry are stocked with the shrimp fry. 20 silver carp and bighead carp with a size of 8 cm each are stocked per acre, and 100 loaches with a size of 5 cm are stocked per acre. Alternatively, in June, fry from the current year can be added (with an appropriate increase in quantity).

[0050] 3. Daily Management:

[0051] Feeding: Feed twice a day. Feed 30% of the day's feed between 8-9 am and 70% of the day's feed between 4-5 pm. Check the feeding situation on the feeding platform frequently according to weather changes and the ecological conditions of the shrimp, and adjust the feeding amount accordingly.

[0052] Water conditioning and oxygenation: Water conditioning is carried out using a bottom water exposure aerator. In spring, the water level is gradually increased according to the warming weather. During sunny days, the aerator is turned on for 2-3 hours at noon. At night, a blower is used to output air under the net to increase oxygen. Water is added appropriately at other times to keep the pool water fertile, lively, refreshing and tender.

[0053] Other management practices: No grass is planted in the pond. All the shrimp live on artificial net nests and feeding platforms, allowing them to swim up and down. They can absorb nutrients (plankton) from all water layers, maximizing resource utilization, reducing the chance of cannibalism, and facilitating molting and growth. Silver carp and loach can eat the large rotifers in the pond, playing a role in regulating the water quality balance. They can also eat the excess shrimp eggs that reproduce in the fall, effectively controlling the number of shrimp larvae in the later stages.

[0054] 4. Fishing:

[0055] Starting in mid-to-late May, large shrimp are harvested while small ones are left, and male shrimp are harvested while females are left. Harvesting is carried out every 10-15 days, with the harvest amount being about 15% of the total amount in the pond. Harvesting continues until the end of November, but it is essential to always leave 500 jin of shrimp in each acre of pond for the entire growth, reproduction, and regeneration process. Shrimp traps are placed on the feeding platform, and some can also be placed around the edges of the pond.

[0056] This aquaculture method utilizes the new deep-water net-nest three-dimensional aquaculture device for freshwater prawns. By setting up reasonable net nests and feeding platforms, it provides suitable habitat and feeding space for freshwater prawns, increasing the carrying capacity of the pond (more than 5 times that of current prawn ponds). Bottom water aeration and ventilation are used to regulate water quality and dissolved oxygen conditions, reducing prawn disease. The addition of silver carp, bighead carp, and loach helps regulate water quality and control prawn populations. Scientific feeding and harvesting methods ensure the growth and yield of freshwater prawns, achieving the goal of 500 kg per mu (approximately 0.16 acres) of marketable freshwater prawns annually. This method also reduces drug use, ensures prawn quality, and allows for the return of some prawn pond land to grain fields after the yield increase.

[0057] Finally, it should be noted that the above examples are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp, characterized in that, The pond (1) includes a pond (1) with multiple feeding platforms (2) arranged horizontally at a distance a meters below the water surface. The feeding platforms (2) are spaced b meters apart, and the feeding platform (2) is c meters away from the bottom of the pond (1). The pond (1) is densely covered with multiple net nests (3). The bottom of the net nest (3) located directly above the feeding platform (2) extends to the feeding platform (2), and the bottom of the remaining net nests (3) extends to the bottom of the pond (1). The pond (1) is also equipped with a bottom water exposure and aeration machine (4) and an aeration fan (5). a, b, and c are constants.

2. The deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 1, characterized in that, The bottom water exposure and aeration machine (4) is used to transport water below the feeding platform (2) to the surface of the pond (1), and the aeration fan (5) is used to transport air to the water below the feeding platform (2) to oxygenate the water.

3. The deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 2, characterized in that, The feeding platform (2) includes a net (21) and a support (22) for shaping the net (21). The bottom of the support (22) is supported on the bottom of the pond (1) by a support rod (23), and the four corners are fixed to the edge of the pond (1) by ropes (24).

4. The deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 3, characterized in that, The mesh (21) mentioned above is made of dense mesh.

5. The deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 4, characterized in that, The value of a is 0.8-1.2, b is 1, and c is 0.6-1.

2.

6. The deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 5, characterized in that, The two ends of the feeding platform (2) extend to both sides of the pond (1), with a width of 8-10 meters.

7. The deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 6, characterized in that, The net nest (3) has a structure that is smaller at the top and larger at the bottom, and the top of the net nest (3) is exposed above the water surface. The upper parts of all net nests (3) are connected together by connecting ropes (31). The upper parts of the net nests (3) located at the edge of the pond (1) are fixed to the edge of the pond (1) by fixing ropes (32). All net nests (3) have floats (33) fixed to their upper parts.

8. The deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 7, characterized in that, The float (33) is wrapped with a mesh bag (34).

9. A deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 8, characterized in that, The net nests (3) are set up at a density of 1,500-2,000 per mu.

10. A deep-sea net-nest three-dimensional aquaculture device for freshwater shrimp according to claim 9, characterized in that, The bottom of the pond (1) is flat and the area of ​​the pond (1) is 10 mu.

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