Sea urchin breeding platform and breeding method using the platform

Abstract

The present invention relates to the field of marine aquaculture technology, and specifically to a sea urchin aquaculture platform and a culturing method using the platform. It includes a bottom platform with a plurality of sewage outlets, a plurality of detachable balancing weights arranged on the upper surface of the bottom platform, detachable aquaculture attachment bases evenly distributed on the upper surface of the bottom platform, and a detachable isolation mesh cover arranged on the edge of the bottom platform. The upper surface of the bottom platform and the isolation mesh cover form a sealed sea urchin aquaculture space. The present invention is provided with a bottom platform, which provides a large hard area for sea urchins to attach to, simulating the rocks, coral reefs and hard seabeds that the regular sea urchins like to live in. In addition, a plurality of aquaculture attachment bases are also provided on the bottom platform. When there is direct sunlight, the sea urchins can hide in the aquaculture attachment bases to avoid direct sunlight. The aquaculture attachment bases simulate hidden corners such as reef crevices.

Description

Technical Field

[0001] The invention relates to the technical field of marine aquaculture, and in particular to a sea urchin aquaculture platform and a aquaculture method using the platform. Background Art

[0002] Sea urchins are a relatively common invertebrate in the ocean. There are about 850 species of sea urchins in the world, but few are edible. So far, no more than 30 economic species have been well developed and utilized. At present, sea urchin farming in Japan, France and the United States has entered large-scale production and achieved good economic benefits. In recent years, the farming of sea urchins with high economic value, such as the Ezo sea urchin, has also developed rapidly in northern my country.

[0003] After research, researchers found that sea urchins have the following habits:

[0004] (1) Most sea urchins prefer to live on rocks, coral reefs and hard seabeds, and mainly rely on tube feet and spines to move around, and movement is often related to feeding;

[0005] (2) Orthocephalic sea urchins are generally afraid of light and prefer to hide in dark places or under reefs. In order to avoid the stimulation of strong light, sea urchins in aquariums generally crawl into dark corners.

[0006] (3) Orthocephalic sea urchins, which hide in rock crevices, particularly prefer to live in wave zones with strong water movement. In areas with small waves and weak tidal activity, sea urchins are rarely seen, even if the bottom conditions are suitable.

[0007] At present, the most commonly used method of sea urchin farming is offshore raft farming, which involves towing a floating raft into a suitable sea area and hanging the farming equipment on the raft. The commonly used farming equipment is mainly:

[0008] Cages, such as net cages, abalone cages, and scallop cages, have the advantages of good water permeability and low cost. However, they are soft in texture, with a small area for sea urchins to attach to, and are not suitable for placement in wave areas with strong water movement, and cannot block direct sunlight. In addition, feeding is inconvenient, and feeding may cause the sutures to be loose, causing the sea urchins to drill out of the cage and escape.

[0009] The plastic culture substrate (30cm in diameter and 70cm in length) has poor water permeability, which does not conform to the characteristic of sea urchins that they like to live in wave areas with strong water movement. In addition, in sea areas with high water turbidity, silt deposition is prone to occur, thus causing the death of sea urchins.

[0010] Plastic baskets (56cmx36cmx18cm) are usually used in pairs. Although they have the advantages of large attachment area, easy management and feeding, and long service life, their costs are relatively high when the number of fish raised is the same, which will bring greater economic pressure to farmers.

[0011] In summary, the existing sea urchin culture equipment is either expensive or cannot provide a culture environment that fully meets the living habits of sea urchins. Therefore, the present invention discloses a sea urchin culture platform and a culture method using the platform to solve the technical problems existing in the prior art. Summary of the invention

[0012] The main purpose of the present invention is to provide a breeding platform with moderate price and fully conforming to the living habits of sea urchins (that is, the platform has a large hard attachment area, dark corners that can be shielded from light and can be placed in wave areas with strong water movement), and to provide a new breeding method using the platform.

[0013] The secondary purpose of the present invention is to provide a breeding platform for co-culturing a variety of marine products, such as sea urchins, sea cucumbers, yellow croakers, abalones, etc., to obtain greater economic benefits.

[0014] The technical solution of the present invention is:

[0015] The present invention provides a sea urchin culture platform and a culture method using the platform, comprising a bottom platform with a plurality of sewage outlets, a plurality of detachable balancing weights evenly distributed on the upper surface of the bottom platform, a detachable culture attachment base evenly distributed on the upper surface of the bottom platform, and a detachable isolation net cover arranged on the edge of the bottom platform, wherein the upper surface of the bottom platform and the isolation net cover form a sealed sea urchin culture space.

[0016] Furthermore, the bottom platform includes a plurality of single plates with a reinforcing structure arranged on the lower surface, the single plates include a first side, a second side, and a third side, and the first side is "L"-shaped.

[0017] Furthermore, the first side of the single board is provided with a "U"-shaped isolation mesh cover fixing groove extending from the starting end I to the tail end I in the normal direction of the upper surface of the single board, and the first side of the single board is provided with a panel extending from the starting end I to the tail end I in the normal direction of the lower surface of the single board. The second side of the single board is provided with a fixed plugboard extending from the starting end II to the tail end II in the normal direction of the lower surface of the single board, and the third side of the single board is provided with a "U"-shaped fixed slot extending from the starting end III to the tail end III and matching the fixed plugboard.

[0018] Furthermore, a plurality of single board fixing pin holes are evenly distributed on the fixed plug plate and the fixed slot, and adjacent single boards are fixed by anti-drop pins.

[0019] Furthermore, the lower edge of the isolation net cover is detachably arranged in the isolation net cover fixing groove through an isolation net fixing structure, and the isolation net fixing structure includes a clamping plug plate and an anti-drop pin. The side wall of the isolation net cover fixing groove and the clamping plug plate are both provided with sockets, and the anti-drop pin is inserted into the sockets.

[0020] Furthermore, a plurality of lifting rope seats are evenly distributed near the first edge of the single board.

[0021] Furthermore, the sewage outlets include a plurality of chrysanthemum-shaped sewage outlets and a plurality of bagua-shaped sewage outlets.

[0022] Furthermore, the breeding attachment base is detachably arranged on the bottom platform through a breeding attachment base fixing structure, and the breeding attachment base includes a stepped barrel wall with two symmetrical openings, a barrel top with a plurality of water flow holes arranged on the top of the barrel wall, an octagonal reinforcement bracket arranged on the inner surface of the upper half of the barrel wall and the inner surface of the barrel top, a barrel bottom rim arranged on the bottom edge of the barrel wall, and a plurality of triangular reinforcement plates evenly arranged on the barrel wall and the barrel bottom rim.

[0023] Furthermore, the aquaculture attachment base fixing structure includes an annular convex rib, a plurality of convex grooves, at least two thrust insertion holes arranged on the upper surface of the bottom platform, a plurality of ear plates arranged on the edge of the barrel bottom, and at least two thrust pins. The outer diameter of the annular convex rib is the same as the inner diameter of the bottom of the barrel wall, the ear plate can be embedded in the convex groove, and the thrust pin is inserted into the thrust insertion hole to prevent the ear plate from falling out of the convex groove.

[0024] A sea urchin culture method comprises the following steps:

[0025] S1. Choose a suitable sea area to place the floating raft. Choose an area with clear sea water, high salinity, no pollution, less floating mud, water depth greater than 10 meters, no freezing in winter and suitable water movement intensity to place the floating raft;

[0026] S2. Assemble the aquaculture platform. First, assemble the four boards into the bottom platform, and then fix the balancing weight, aquaculture attachment base and isolation net cover on the bottom platform;

[0027] S3. The aquaculture platform is placed into the sea, the bottom platform is kept level in the sea water, and the aquaculture platform is fixed on the raft;

[0028] S4. Release sea urchins, and put sea urchins of suitable size after seedlings into the breeding platform. The number of young sea urchins that can be cultured on each breeding platform is 900 to 1100;

[0029] S5. Feed, open the top opening of the isolation net every two days to feed once, the feed is kelp;

[0030] S6. Inspection of the breeding platform: inspect the breeding platform once a month. If any single board is found to be damaged, just replace the corresponding single board;

[0031] S7. Reduce the density of sea urchin culture. When the sea urchin grows to more than 1 cm, reduce the density of sea urchin culture in the culture platform. At this time, the number of sea urchins cultured in the culture platform is 300 to 500;

[0032] S8. Sea urchins are captured after 2.5 to 3.5 years of natural growth. The sea urchins in the aquaculture platform are captured.

[0033] The beneficial effects achieved by the present invention are:

[0034] (1) The present invention is provided with a bottom platform, which provides a large hard area for sea urchins to attach to, simulating the rock, coral reef and hard seabed environment that the true sea urchins like to live in. In addition, a number of culture attachment bases are also provided on the bottom platform. When there is direct sunlight, the sea urchins can hide in the culture attachment bases to avoid direct sunlight. The culture attachment bases simulate hidden corners such as reef crevices. The present invention realizes the living environment that wild sea urchins like, and improves the survival rate and growth rate of sea urchins.

[0035] (2) The bottom platform of the present invention is provided with a plurality of drainage holes, which can effectively prevent the accumulation of silt. Even if silt is accumulated on the bottom platform, since the present invention is placed in a wave area with strong water movement ability, the silt accumulated on the bottom platform will leak out from the drainage holes under the action of seawater.

[0036] (3) The present invention evenly arranges a number of balancing weights on the bottom platform. These weights increase the weight of the bottom platform and improve the wave resistance of the bottom platform. Even in a wave zone with strong water movement, the bottom platform can remain roughly horizontal. That is, the aquaculture platform provided by the present invention has better wave resistance than traditional aquaculture equipment.

[0037] (4) The bottom platform of the present invention is composed of several single boards, which is not only convenient for transportation, but also can be easily replaced when a single board is damaged. In addition, the single boards are fixed by a combination of fixed plugs, fixed slots, and anti-drop pins, which not only ensures a stable connection, but also makes installation and disassembly extremely convenient, greatly improving the efficiency of assembling or replacing single boards.

[0038] (5) The single board of the present invention is provided with a reinforcement structure on the lower surface, and an isolation mesh fixing groove and a enclosure are provided on the first side. These structures greatly increase the strength of the single board and improve the ability of the present invention to resist ocean currents.

[0039] (6) The barrel wall of the present invention is in the form of four steps, and an octopus reinforcement structure is arranged inside to support the barrel wall and the barrel top. These structures greatly enhance the overall strength of the aquaculture attachment base and prevent the aquaculture attachment base from being deformed and damaged under the impact of ocean currents.

[0040] (7) The aquaculture attachment base of the present invention is quickly and efficiently clamped and fixed on the bottom platform through the annular convex rib, convex groove, ear plate, and thrust pin, which makes installation more convenient. In addition, the annular convex rib can support the lower edge of the barrel wall inside the aquaculture attachment base to prevent the barrel wall from deforming inward under the impact of the ocean current, thereby causing the aquaculture attachment base to fall off. The thrust pin can block the ear plate to prevent the aquaculture attachment base from rotating under the impact of the ocean current, thereby causing the aquaculture attachment base to rotate and disengage.

[0041] (8) In addition, the isolation net cover of the present invention is installed in the isolation net cover fixing groove by using a squeeze plug plate and an anti-drop pin. Not only is the installation quick, but also because the anti-drop pin passes through the isolation net cover fixing groove and the squeeze plug plate, even if the bottom platform is constantly shaking under the impact of the ocean current, the isolation net cover and the bottom platform will not be easily separated.

[0042] (9) The bottom platform of the present invention is also provided with a plurality of lifting rope seats, which makes the present invention extremely convenient and fast in both the deployment and maintenance process.

[0043] (10) The present breeding method can not only simulate the living environment of the orthomorphic sea urchin to the greatest extent and improve the survival rate, but also has a low cost, which can enable breeders to obtain greater profits.

[0044] (11) In addition, the present invention can be used not only to cultivate sea urchins, but also to cultivate other marine products alone or to mix multiple marine products (such as sea cucumbers, yellow croakers, abalones, etc., which have similar living habits to sea urchins) according to actual needs. This can not only increase the frequency of use of the present invention and prevent waste of resources, but also greatly improve the economic benefits of farmers. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is the front view of the present invention.

[0046] Figure 2 It is a schematic diagram of the fixed structure of the isolation net.

[0047] Figure 3 The bottom platform is three-dimensional Figure 1 .

[0048] Figure 4 The bottom platform is three-dimensional Figure 2 .

[0049] Figure 5 This is a top view of the bottom platform.

[0050] Figure 6 This is a top view of the board.

[0051] Figure 7 yes Figure 6 Middle AA section view.

[0052] Figure 8 yes Figure 6 Middle BB section view.

[0053] Fig. 9 It is a three-dimensional culture base Figure 1 .

[0054] Fig.10 It is a three-dimensional culture base Figure 2 .

[0055] Fig.11 This is the front view of the breeding attachment base.

[0056] Fig.12 yes Fig.11 Middle CC section view.

[0057] Fig.13 It is a three-dimensional diagram of the octopus reinforcement bracket.

[0058] In the figure, 1, bottom platform; 11, single board; 111, chrysanthemum-shaped sewage outlet; 112, Bagua-shaped sewage outlet; 113, reinforcement structure; 114, first side; 1141, starting end Ⅰ; 1142, tail end Ⅰ; 1143, isolation net cover fixing groove; 1144, enclosure; 1145, lifting rope seat; 115, second side; 1151, starting end Ⅱ; 1152, tail end Ⅱ; 1153, fixed plug plate; 116, third side ; 1161, starting end III; 1162, tail end III; 1163, fixed slot; 12, anti-drop pin; 2, balance weight; 3, culture attachment base; 31, barrel wall; 311, opening; 32, barrel top; 321, water flow hole; 33, eight-claw reinforcement bracket; 34, barrel bottom edge; 35, triangular reinforcement plate; 41, annular rib; 42, convex groove; 43, ear plate; 44, anti-thrust pin; 5, isolation mesh cover; 51, squeeze plug plate. DETAILED DESCRIPTION

[0059] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0060] like Figures 1 to 13As shown, the present invention aims to provide a sea urchin culture platform with moderate price, which can simulate the living environment of sea urchins to the maximum extent (that is, the platform should have a large hard attachment area, a dark corner that can avoid light, and can be placed in a wave area with strong water movement), and a culture method using the platform, comprising a bottom platform 1 with a plurality of sewage outlets, a plurality of detachable balancing weights 2 evenly distributed on the upper surface of the bottom platform 1, a detachable culture attachment base 3 evenly distributed on the upper surface of the bottom platform 1, and a detachable isolation net cover 5 arranged on the edge of the bottom platform 1, wherein the upper surface of the bottom platform 1 and the isolation net cover 5 form a sealed sea urchin culture space. The present invention adopts a combination of a bottom platform 1 and an isolation net cover 5, which simulates the living environment that sea urchins like, and the cost is relatively low.

[0061] The bottom platform 1 provides a hard attachment environment for the sea urchins, so that the sea urchins can live on the bottom platform 1 just like living on reefs, corals or hard seabeds. Usually, the sea urchins move around on the bottom platform 1 to forage, and when the sunlight is strong, the sea urchins can move to the breeding attachment base 3 to avoid direct sunlight. This can effectively increase the activity of the sea urchins and increase the growth rate of the sea urchins. In addition, the present invention has also made structural reinforcements in many aspects. These reinforcement structures can ensure that the present invention will not be damaged in areas with faster currents, so that the present invention can be placed in wave areas with strong water activities, making the living environment of the sea urchins more natural. These measures combined provide a simulated wild living environment for the sea urchins, and improve the survival rate and growth rate of the sea urchins.

[0062] Furthermore, the sewage outlet includes a plurality of chrysanthemum-shaped sewage outlets 111 and a plurality of Bagua-shaped sewage outlets 112. The chrysanthemum-shaped sewage outlets 111 and Bagua-shaped sewage outlets 112 are evenly distributed on the following single board 11. Among them, some chrysanthemum-shaped sewage outlets 111 are arranged in the inner area of ​​the Bagua-shaped sewage outlets 112. The silt, food residues, etc. accumulated on the bottom platform 1 can be leaked from these sewage outlets under the scouring of the ocean current, ensuring that the bottom platform 1 will not accumulate silt and improving the survival rate of the sea urchins.

[0063] Furthermore, the number of the balancing weights 2 is five, four of which are symmetrically arranged on two diagonals of the bottom platform 1, and the remaining one is arranged at the center of the bottom platform 1. The balancing weight 2 includes a balancing weight shell and a filling, the balancing weight shell is cast, and the filling is cement. The balancing weight 2 is fixed to the bottom platform 1 by bolts to increase the stability of the bottom platform 1, so that the bottom platform 1 can remain level even in a wave area with strong water movement ability, which provides support for the present invention to simulate the living environment of sea urchins.

[0064] The bottom platform 1 includes a plurality of single boards 11 with a reinforcing structure 113 disposed on the lower surface. The number of the single boards 11 is four. The four single boards 11 form the bottom platform 1. Each of the four single boards 11 can be obtained by rotating the other single boards 11 by multiples of 90°. The single board 11 includes a first side 114, a second side 115, and a third side 116. The first side 114 is "L"-shaped, and the top angle of the first side 114 is rounded. The second side 115 and the third side 116 are respectively perpendicular to the first side 114, and the second side 115 and the third side 116 are mutually perpendicular. The first side 114, the second side 115, and the third side 116 enclose a rectangular area. Among them, the reinforcing structure 113 includes a plurality of mutually perpendicular reinforcing plates, which are used to increase the bending resistance of the single board 11.

[0065] The first side 114 of the single board 11 is provided with a "U"-shaped isolation mesh cover fixing groove 1143 extending from the starting end Ⅰ1141 to the tail end Ⅰ1142 in the normal direction of the upper surface of the single board 11, and the isolation mesh cover fixing groove 1143 is used to fix the isolation mesh cover 5; the first side 114 of the single board 11 is provided with a surrounding plate 1144 extending from the starting end Ⅰ1141 to the tail end Ⅰ1142 in the normal direction of the lower surface of the single board 11, and the surrounding plate 1144 and the isolation mesh cover fixing groove 1143 can both be used to strengthen the structural strength of the single board 11 and increase the bending resistance of the single board 11. The second side 115 of the single board 11 is provided with a fixed plug plate 1153 extending from a starting end II1151 to a tail end II1152 in the normal direction of the lower surface of the single board 11, and the third side 116 of the single board 11 is provided with a "U"-shaped fixed slot 1163 extending from a starting end III1161 to a tail end III1162 and matching the fixed plug plate 1153.

[0066] Several single board fixing pin holes are evenly distributed on the fixing plug plate 1153 and the fixing slot 1163. The single board fixing pin holes on the fixing plug plate 1153 correspond to the single board fixing pin holes on the fixing slot 1163 one by one and are coaxial. When assembling the bottom platform 1, the fixing plug plate 1153 of the first single board 11 is inserted into the "U"-shaped fixing slot 1163 of the second single board 11, and the "U"-shaped fixing slot 1163 of the first single board 11 is buckled on the fixing plug plate 1153 of the third single board 11. The installation method of other single boards 11 is similar. The four single boards 11 are buckled with each other, and finally the anti-drop pins 12 are inserted into the fixing pin holes on the fixing plug plate 1153 and the fixing slot 1163 to complete the fixation.

[0067] Wherein, the anti-drop pin 12 includes a nail rod, a nail cap arranged at the top of the nail rod, and an expansion zone arranged at the bottom of the nail rod. The diameter of the nail rod is the same as the diameter of the fixed pin hole, and the diameters of the nail cap and the expansion zone are larger than the diameter of the fixed pin hole. The expansion zone is divided into several petals and can be deformed to a certain extent. Under normal circumstances, the diameter of the expansion zone is larger than the diameter of the fixed pin hole. After deformation, the expansion zone can be easily inserted into the fixed pin hole. In this way, the expansion zone gradually deforms when inserted into the fixed pin hole, and the diameter becomes smaller. After passing through, the diameter of the expansion zone is restored, and the locking is completed.

[0068] Near the first side 114 of the single board 11, four lifting rope seats 1145 are evenly distributed from the starting end Ⅰ1141 to the tail end Ⅰ1142. The lifting rope seats 1145 are used to fix ropes when the present invention is put into service or lifted out of the water for maintenance. The present invention is provided with a total of 12 lifting rope seats 1145, which can always ensure the stability of the bottom platform 1 when the present invention is put into service or lifted out of the water for maintenance.

[0069] The culture attachment base 3 is used to provide a hidden space for the sea urchins and to shield the sun, and the number of the culture attachment bases 3 is 25. The culture attachment base 3 includes a stepped barrel wall 31 with two symmetrical openings 311, a barrel top 32 with a plurality of water flow holes 321 arranged on the top of the barrel wall 31, an octopus reinforcement bracket 33 arranged on the inner surface of the upper half of the barrel wall 31 and the inner surface of the barrel top 32, a barrel bottom rim 34 arranged at the bottom edge of the barrel wall 31, and a plurality of triangular reinforcement plates 35 evenly arranged on the barrel wall 31 and the barrel bottom rim 34.

[0070] In order to improve the wave resistance of the aquaculture attachment base 3, the aquaculture attachment base 3 is structurally reinforced in three directions. First, the barrel wall 31 is divided into four steps from top to bottom to avoid stress concentration and prevent deformation of the barrel wall 31. Second, an eight-claw reinforcement bracket 33 is provided inside, and the top of the eight-claw reinforcement bracket 33 is fixed on the barrel top 32, and eight claws are fixed on the barrel wall 31, which can not only strengthen the connection between the barrel top 32 and the barrel wall 31, but also provide support for the top of the barrel wall 31 to prevent deformation of the top of the barrel wall 31. Third, a barrel bottom rim 34 is provided at the bottom edge of the barrel wall 31, and a triangular reinforcement plate 35 is provided on the barrel wall 31 and the barrel bottom rim 34. The barrel bottom rim 34 and the triangular reinforcement plate 35 increase the strength of the bottom of the barrel wall 31. In this way, the entire aquaculture attachment base 3 is structurally reinforced from top to bottom, which greatly enhances the ability of the aquaculture attachment base 3 to resist deformation.

[0071] The aquaculture attachment base 3 is detachably arranged on the bottom platform 1 through the aquaculture attachment base fixing structure, and the aquaculture attachment base fixing structure includes an annular convex rib 41, a plurality of convex grooves 42, at least two thrust plug holes arranged on the upper surface of the bottom platform 1, a plurality of ear plates 43, and at least two thrust pins 44 arranged on the barrel bottom rim 34. The outer diameter of the annular convex rib 41 is the same as the inner diameter of the bottom of the barrel wall 31, and is used to resist the bottom of the barrel wall 31 internally to prevent the aquaculture attachment base 3 from deforming inward and detaching under the impact of the ocean current. The convex groove 42 is a semi-open structure, having a top and two side walls perpendicular to the top, and the other two perpendicular side walls completely eliminate the entry of the ear plate 43. The ear plate 43 can be rotatably embedded in the convex groove 42. In order to facilitate insertion, one end of the ear plate 43 is set as an inclined surface, so that the thickness of this end is slightly larger. The thrust plug hole is arranged near the entrance of the ear plate 43. When the ear plate 43 is inserted into the convex groove 42, the thrust pin 44 is inserted into the thrust plug hole to prevent the ear plate 43 from falling out of the convex groove 42, that is, to prevent the aquaculture attachment base 3 from rotating out under the impact of the ocean current.

[0072] The top of the isolation net cover 5 is provided with an openable feeding port. When feeding, just open the feeding port and put the kelp in. The lower edge of the isolation net cover 5 is detachably arranged in the isolation net cover fixing groove 1143 through the isolation net fixing structure. The isolation net fixing structure includes a squeeze plug plate 51 and an anti-drop pin 12. Plug holes are provided on the side wall of the isolation net cover fixing groove 1143 and the squeeze plug plate 51. The plug holes of the two are one-to-one corresponding, and the two opposite plug holes are coaxial. When in use, the squeeze plug plate 51 is inserted into the isolation net cover fixing groove 1143 with the lower edge of the isolation net cover 5, and then the anti-drop pin 12 is inserted into the plug hole to complete the fixation.

[0073] A sea urchin culture method comprises the following steps:

[0074] S1. Choose a suitable sea area to place the floating raft. Choose an area with clear sea water, high salinity, no pollution, less floating mud, water depth greater than 10 meters, no freezing in winter and suitable water movement intensity to place the floating raft;

[0075] S2 breeding platform assembly, first assemble the four single board 11 into the bottom platform 1, and then the balance weight 2, breeding attachment base 3 and isolation mesh 5 are fixed to the bottom platform 1;

[0076] S3. The aquaculture platform is placed into the sea, so that the bottom platform 1 remains level in the sea water, and the aquaculture platform is fixed on the raft;

[0077] S4. Release sea urchins, and put sea urchins of suitable size after seedlings into the breeding platform. The number of young sea urchins that can be cultured on each breeding platform is 900 to 1100;

[0078] S5. Feed, open the top opening of the isolation net 5 every two days to feed once, the feed is large seaweed such as kelp;

[0079] S6. Inspection of the breeding platform: conduct an inspection of the breeding platform once a month. If the single board 11 is found to be damaged, simply replace the corresponding single board 11;

[0080] S7. Reduce the density of sea urchin culture. When the sea urchin grows to more than 1 cm, reduce the density of sea urchin culture in the culture platform. At this time, the number of sea urchins cultured in the culture platform is 300 to 500;

[0081] S8. Sea urchins are captured after 2.5 to 3.5 years of natural growth. The sea urchins in the aquaculture platform are captured.

[0082] In addition, the present invention can not only be used to cultivate sea urchins, but also can be used to cultivate other marine products alone according to actual needs, or to cultivate multiple marine products in a mixed manner (such as sea cucumbers, yellow croakers, abalones, etc., which have similar living habits to sea urchins). When a large number of sea urchins die due to environmental changes, or the income of sea urchins decreases, the farmers can completely recover economic losses and increase economic benefits by cultivating other marine products or cultivating multiple marine products in a mixed manner. In addition, this can also prevent the present invention from being idle and prevent waste of resources.

[0083] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A sea urchin breeding platform, characterized in that: It comprises a bottom platform (1) with a plurality of sewage outlets, a plurality of detachable balancing weights (2) evenly distributed on the upper surface of the bottom platform (1), a detachable aquaculture attachment base (3) evenly distributed on the upper surface of the bottom platform (1), and a detachable isolation net cover (5) arranged on the edge of the bottom platform (1), wherein the upper surface of the bottom platform (1) and the isolation net cover (5) enclose a sealed sea urchin aquaculture space; The bottom platform (1) comprises a plurality of single plates (11) with a reinforcing structure (113) provided on the lower surface, the single plates (11) comprising a first side (114), a second side (115), and a third side (116), the first side (114) being "L"-shaped; The first side (114) of the single board (11) is provided with a "U"-shaped isolation mesh fixing groove (1143) extending from the starting end I (1141) to the tail end I (1142) in the normal direction of the upper surface of the single board (11); the first side (114) of the single board (11) is provided with a surrounding plate (1144) extending from the starting end I (1141) to the tail end I (1142) in the normal direction of the lower surface of the single board (11). The second side (115) of the single board (11) is provided with a fixed plug board (1153) extending from a starting end II (1151) to a tail end II (1152) in the normal direction of the lower surface of the single board (11); the third side (116) of the single board (11) is provided with a "U"-shaped fixed slot (1163) extending from a starting end III (1161) to a tail end III (1162) and matching the fixed plug board (1153); A plurality of single board fixing pin holes are evenly distributed on the fixing plug plate (1153) and the fixing slot (1163), and adjacent single boards (11) are fixed by anti-drop pins (12); The lower edge of the isolation net cover (5) is detachably arranged in the isolation net cover fixing groove (1143) through an isolation net fixing structure, the isolation net fixing structure comprises a clamping plug plate (51) and an anti-dropping pin (12), and the side wall of the isolation net cover fixing groove (1143) and the clamping plug plate (51) are both provided with insertion holes, and the anti-dropping pin (12) is inserted into the insertion hole; A plurality of lifting rope seats (1145) are evenly distributed near the first edge (114) of the single board (11).

2. A sea urchin culture platform according to claim 1, characterized in that: The sewage outlets include a plurality of chrysanthemum-shaped sewage outlets (111) and a plurality of Bagua-shaped sewage outlets (112).

3. A sea urchin culture platform according to claim 1, characterized in that: The aquaculture attachment base (3) is detachably arranged on the bottom platform (1) via an aquaculture attachment base fixing structure, and the aquaculture attachment base (3) comprises a stepped barrel wall (31) with two symmetrical openings (311), a barrel top (32) arranged on the top of the barrel wall (31) and having a plurality of water flow holes (321), an octagonal reinforcement bracket (33) arranged on the inner surface of the upper half of the barrel wall (31) and the inner surface of the barrel top (32), a barrel bottom rim (34) arranged on the bottom edge of the barrel wall (31), and a plurality of triangular reinforcement plates (35) evenly arranged on the barrel wall (31) and the barrel bottom rim (34).

4. A sea urchin culture platform according to claim 3, characterized in that: The aquaculture attachment base fixing structure comprises an annular convex rib (41), a plurality of convex grooves (42), at least two thrust insertion holes, a plurality of ear plates (43) and at least two thrust pins (44) arranged on the upper surface of the bottom platform (1); the outer diameter of the annular convex rib (41) is the same as the inner diameter of the bottom of the barrel wall (31); the ear plate (43) can be embedded in the convex groove (42); and the thrust pin (44) is inserted into the thrust insertion hole to prevent the ear plate (43) from falling out of the convex groove (42).

5. A method for cultivating sea urchins, comprising the sea urchin cultivation platform according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Choose a suitable sea area to place the floating raft. Choose an area with clear sea water, high salinity, no pollution, less floating mud, water depth greater than 10 meters, no freezing in winter and suitable water movement intensity to place the floating raft; S2. The aquaculture platform is assembled by first assembling four boards (11) into a bottom platform (1), and then fixing the balancing weight (2), the aquaculture attachment base (3) and the isolation mesh (5) on the bottom platform (1); S3. The aquaculture platform is placed into the sea, so that the bottom platform (1) remains level in the seawater, and the aquaculture platform is fixed on the raft; S4. Release sea urchins, and place sea urchins of suitable size after seedlings into the breeding platform. The number of young sea urchins cultured on each breeding platform is 900-1100; S5. Feed, every two days open the isolation mesh (5) top opening to feed once, the feed is kelp; S6. Inspection of the breeding platform: the breeding platform is inspected once a month. If the single board (11) is found to be damaged, only the corresponding single board (11) needs to be replaced; S7. Reduce the density of sea urchin culture. When the sea urchin grows to more than 1 cm, reduce the density of sea urchin culture in the culture platform. At this time, the number of sea urchins cultured in the culture platform is 300-500; S8. Sea urchins are captured after 2.5 to 3.5 years of natural growth. The sea urchins in the aquaculture platform are captured.

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