Razor Clam Basket Culture Method and Seedling Device

Abstract

This invention discloses a method for basket culture of razor clams and a seeding device. The basket culture method of this invention includes: preparing numerous culture baskets (1); arranging the numerous culture baskets in a culture pond; filling the culture baskets with pond mud for razor clam culture; using a seeding device to precisely seed the razor clam seedlings in the culture baskets; managing the razor clam seedlings in the culture pond until they grow into razor clams that meet the specifications for finished products; harvesting the finished razor clams by removing the culture baskets from the culture pond, shoveling out the upper layer of pond mud from the culture baskets, and picking out the razor clams from the bottom mud. This basket culture method of razor clam culture makes the harvesting of razor clams simple and quick, greatly improving work efficiency. The seeding device (2) of the present invention is used to sow clams in a breeding basket; a number of vertically connected seeding channels (25) are provided on the bottom plate (24) of the box body (21); the lower opening of the seeding funnel (22) is attached to the upper surface of the bottom plate of the box body.

Description

Technical Field

[0001] This invention relates to a razor clam farming technique, and more particularly to a razor clam basket farming method and seeding device. Background Technology

[0002] Razor clams inhabit the mud and sand of the intertidal zone in the middle and low tide areas of river mouths or inner bays with a small amount of fresh water inflow. They live by digging burrows with their feet and burying themselves in the sand to avoid predators. Under natural conditions, they burrow to a depth of 50-100 centimeters and generally do not migrate after entering their burrows.

[0003] Currently, the common methods of razor clam farming mainly include mudflat stocking and embankment stocking. Specifically, nets are laid in the farming pond, and after the nets are laid, mud is piled up to a height of 400mm on the net surface to create clam beds. Then, clam seedlings are manually sown, and finally, the farming pond is filled with water for management.

[0004] The current problem is:

[0005] Problem 1: The razor clam's habit of burrowing in the sand makes harvesting a labor-intensive process, requiring workers to reach into the pond mud by hand to retrieve the razor clams. Traditional farming methods require a lot of manpower and time to harvest, which is slow and inefficient, and may result in missed catches, leading to the subsequent deterioration of the farming environment.

[0006] Problem 2: The seeding process in pond aquaculture is haphazard, with workers relying on experience to sow the seedlings. This makes it difficult to control the stocking density in each area, resulting in an excessive number of clam seedlings in some areas, slow growth, and significant differences in size.

[0007] Question 3: The long drainage cycle in pond aquaculture makes it impossible to observe the growth of razor clams at the bottom. Summary of the Invention

[0008] One objective of this invention is to provide a method for basket culture of razor clams, which simplifies and speeds up the harvesting process, greatly improving work efficiency. A second objective is to provide a seeding device for basket culture of razor clams, which enables precise seeding by sowing seedlings in the culture basket.

[0009] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0010] A method for basket culture of razor clams, comprising: preparing numerous culture baskets; arranging the numerous culture baskets in a culture pond; filling the culture baskets with pond mud for razor clam culture; sowing clam seedlings in the culture baskets; managing the clam seedlings in the culture pond until the seedlings grow into clam clams that meet the specifications for finished products; harvesting the finished clam clams by removing the culture baskets from the culture pond, emptying the pond mud from the culture baskets, and picking out the clam clams from the pond mud.

[0011] Furthermore, the aquaculture basket has numerous permeable holes on all four sides; for each aquaculture basket, after the clam seedlings are sown, a protective net is laid on the surface of the pond mud.

[0012] Furthermore, the specific implementation of arranging numerous breeding baskets in the breeding pond is as follows: the breeding baskets are arranged in an array approximately the size of the clam jars, and the breeding basket array is arranged in the breeding pond in the same way as the clam jars.

[0013] Furthermore, a 20mm gap should be maintained between two adjacent breeding baskets.

[0014] Furthermore, the length of the breeding basket is 500-550mm, the height is 300-350mm, and the width is 350-370mm.

[0015] Furthermore, when harvesting the finished razor clams, first remove the upper layer of pond mud from the breeding basket, and then pour out the pond mud from the breeding basket.

[0016] Furthermore, the thickness of the pond mud filled in the aquaculture basket is controlled within the range of 250-300mm.

[0017] A seeding device for raising razor clams in a basket is disclosed. This device is used to sow clam seedlings in a rearing basket for raising razor clams. The seeding device includes a box and a seeding funnel. Numerous vertically extending seeding channels are evenly and discretely distributed on the bottom plate of the box. The seeding funnel is located inside the box, with its lower opening fitting against the upper surface of the bottom plate. A push-pull rod is fixedly installed on the side of the seeding funnel. When sowing clam seedlings into the rearing basket using the seeding device, the device with the seedlings placed inside is positioned at the upper opening of the rearing basket.

[0018] Furthermore, a handle through hole is provided on the side wall of the box body facing the push-pull rod, and the push-pull rod passes through the handle through hole; a pull-out sealing plate is provided at the bottom of the box body, and the pull-out sealing plate is assembled at the bottom of the box body through a sliding mechanism, and the pull-out sealing plate can perform a reciprocating pull-out action at the bottom of the box body.

[0019] Furthermore, the method of sowing clam seedlings into the breeding basket using the seeding device is as follows: manipulate the seeding funnel in the box, move the seeding funnel to one side of the box, place a large number of clam seedlings in the seeding funnel, place the seeding device at the top of the breeding basket, manipulate the seeding funnel to move in the box, so that the lower opening of the seeding funnel slides over each seeding channel of the bottom plate of the box, and the clam seedlings in the seeding funnel fall into each seeding channel. Pull the sealing plate away from the lower surface of the bottom plate of the box, open the lower opening of all seeding channels, and the clam seedlings in all seeding channels fall into the breeding basket.

[0020] The advantages of the razor clam basket culture method of the present invention compared with the prior art are as follows:

[0021] 1) Replacing clam cages with arrays of breeding baskets makes harvesting constricted clams simpler and faster, eliminates missed catches, and greatly improves work efficiency;

[0022] 2) Using a seeding device to sow seedlings in the breeding basket can achieve precision seeding;

[0023] 3) When using a breeding basket, it is convenient to inspect the clams being raised in the basket. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the breeding basket used in the razor clam basket breeding method of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the razor clam basket seedling raising device of the present invention. Detailed Implementation

[0026] The present invention will be further illustrated below with specific embodiments:

[0027] This embodiment provides a method for raising razor clams in baskets, which makes harvesting razor clams simple and quick.

[0028] Specifically, the method for raising razor clams in baskets according to this embodiment includes the following steps S1 to S7:

[0029] S1, prepare numerous breeding baskets 1.

[0030] For a single breeding basket 1, numerous water-permeable holes are provided on all four sides of the breeding basket 1, and these water-permeable holes are evenly distributed on all sides of the breeding basket 1 (e.g. Figure 1 As shown in the figure, the purpose of setting these permeable holes is to allow external water to maintain contact and circulation with the soil inside the breeding basket through the permeable holes.

[0031] In this embodiment, the breeding basket is made of polyethylene and has a cubic shape. The length of the breeding basket is 500-550mm, the height is 300-350mm, and the width is 350-370mm. The preferred dimensions of the breeding basket are: length 520mm, width 360mm, and height 350mm.

[0032] S2. Arrange the numerous breeding baskets 1 prepared in step S1 in the pre-determined breeding pond. The arrangement can be a two-dimensional array. Maintain a distance of about 20mm between two adjacent breeding baskets 1. This distance is conducive to the flow of water in the breeding pond between each breeding basket 1, which is beneficial to the healthy growth of razor clams.

[0033] The aquaculture baskets can be arranged in an array similar in size to a conventional clam pit, and the array of aquaculture baskets can be placed in the aquaculture pond in the same way as conventional clam pits. This approach is equivalent to replacing the original clam pits with numerous arrays of aquaculture baskets. This arrangement facilitates aquaculture management according to the original conventional clam pit management model, and does not waste extra aquaculture space. Areas where the aquaculture basket arrays are not arranged can be used to cultivate other aquatic products.

[0034] S3, fill each culture basket 1 with pond mud for raising razor clams.

[0035] It should be noted that the thickness of the pond mud filled in the breeding basket 1 should be controlled within the range of 250-300mm. This thickness can not only meet the needs of the razor clams for normal growth, but also prevent the total weight of the breeding basket 1 from being too heavy, which is beneficial for the later harvest.

[0036] S4. Sow clam seedlings evenly in each culture basket 1, with approximately 80 clam seedlings sown in each culture basket 1.

[0037] It should be noted that, in this embodiment, a constricted clam basket seedling raising and sowing device was specifically designed for "evenly sowing clam seedlings in the breeding basket 1".

[0038] See Figure 2 Specifically, the seeding device 2 includes a box 21, a seeding funnel 22, and a pull-out sealing plate 26.

[0039] The top opening of the box 21 is open, and the box 21 has a relatively thick bottom plate 24, which is about 15mm thick.

[0040] Numerous vertically connected seeding channels 25 are provided on the base plate 24, and these seeding channels 25 are evenly and discretely distributed in the base plate 24. The "vertically connected seeding channels 25" means that the seeding channels 25 connect the inside and outside of the box body 21.

[0041] A retractable sealing plate 26 is also provided at the bottom of the box body 21, specifically at the bottom of the bottom plate 24 of the box body 21. This retractable sealing plate 26 is mounted to the bottom of the box body 21 via a sliding mechanism, allowing it to reciprocate at the bottom of the box body 21. Furthermore, to facilitate operation, a handle (not shown in the figure) is provided on one side of the retractable sealing plate 26. This retractable sealing plate 26 serves to open or close the lower openings of all seeding channels 25.

[0042] The seeding funnel 22 is funnel-shaped, having a wide upper opening and a narrow slit-like lower opening. The seeding funnel 22 is housed inside the box 21, with its lower opening fitting against the upper surface of the bottom plate 24. A push-pull rod 23 is fixedly installed on the side of the seeding funnel 22. The operator can manipulate the push-pull rod 23 to push or pull the seeding funnel 22 within the box 21, allowing its lower opening to pass over each seeding channel 25 on the bottom plate 24.

[0043] In addition, in order to facilitate the operator to grasp the push-pull rod 23 from the outside of the box 21, a through hole is opened on the side wall of the box 21 opposite to the push-pull rod 23. This through hole is called the handle through hole. The push-pull rod 23 passes through the handle through hole from the inside to the outside of the breeding basket 1.

[0044] It should be noted that the overall configuration and size of the seeding device 2 are matched with the breeding basket 1, and the seeding device 2 can be completely placed on the breeding basket 1.

[0045] It should be noted that an assembly and positioning mechanism is provided between the bottom of the seeding device 2 and the top of the breeding basket 1. Through this assembly and positioning mechanism, the seeding device 2 can be assembled and positioned on the breeding basket 1. This setting enables the seeding device 2 to accurately seed in the breeding basket 1.

[0046] Specifically, the assembly and positioning mechanism has several positioning grooves at the top of the breeding basket 1, and correspondingly, several positioning protrusions at the bottom of the seeding device 2. When the seeding device 2 is placed on the breeding basket 1, the "several positioning protrusions at the bottom of the seeding device 2" can be embedded into the "several positioning grooves at the top of the breeding basket 1" one by one, thus forming the assembly and positioning mechanism and realizing the previously mentioned function of "the seeding device 2 can be assembled and positioned on the breeding basket 1".

[0047] The specific method for sowing clam seedlings into the culture basket 1 using the seedling sowing device 2 described above is as follows:

[0048] First, the seeding funnel 22 in the box 21 is moved to one side of the box 21 by pushing and pulling rod 23. Then, a large number of razor clam seedlings are placed in the seeding funnel 22. The seeding device 2 with the seedlings placed is placed at the upper opening of the breeding basket 1. The seeding funnel 22 is moved in the box 21 so that the lower opening of the seeding funnel 22 slides over each seeding channel 25 of the bottom plate 24. The razor clam seedlings in the seeding funnel 22 will fall into each seeding channel 25 through the lower opening, and only one razor clam seedling will fall into each seeding channel 25 (the seeding channel 25 is designed to only allow one razor clam seedling to fall in). Then, the sliding sealing plate 26 is pulled away from the lower surface of the bottom plate 24 of the box 21, that is, the lower opening of all the seeding channels 25 is opened, and all the razor clam seedlings in the seeding channels 25 will fall into the breeding basket 1 below.

[0049] In this way, the clam seedlings can be evenly spread onto the pond mud in the breeding basket 1, and the operation is very convenient and quick, thus greatly improving work efficiency.

[0050] It should be noted that the size and configuration of the bottom plate 24 (thickness) of the box 21 and its seeding channel 25 are designed based on the size and configuration of a single clam seedling. In other words, the seeding channel 25 is designed to be the size and configuration of only one clam seedling. In this way, when the lower opening of the seeding funnel 22 slides across the seeding channel 25, only one clam seedling will fall into the seeding channel 25, thus ensuring the uniform sowing of the clam seedlings.

[0051] S5, for each aquaculture basket 1, after the clam seedlings are sown, a protective net is laid on the surface of the pond mud.

[0052] The purpose of laying protective netting is to prevent the razor clam seedlings from being easily eaten by crabs, shrimps, fish, etc., resulting in a low survival rate in aquaculture.

[0053] S6 involves the cultivation and management of razor clam seedlings in aquaculture ponds until the seedlings grow into razor clams that meet the specifications for finished products.

[0054] Specifically, they regularly patrol the ponds to remove organisms attached to the breeding baskets; they check the survival of the clam seedlings and the condition of the mud in the breeding baskets to ensure that the clams have a suitable habitat and growth space.

[0055] S7. Harvest the finished razor clams by taking out the breeding basket 1 from the breeding pond, pouring out the pond mud from the breeding basket 1, and picking out the razor clams from the pond mud.

[0056] It should be noted that, to improve work efficiency, generally, after removing the breeding basket 1 from the breeding pond, first shovel out the top 200mm thick layer of pond mud (about two-thirds of the total volume) inside the breeding basket 1, leaving only about 100mm thick layer of pond mud (about one-third of the total volume) inside the basket 1. Then, pour out the pond mud from the breeding basket 1. The reason for this is that, generally, when harvesting, the razor clams will burrow to the deepest part of the pond mud, so there will be no razor clams in the top layer of pond mud inside the breeding basket 1, and it can be removed.

[0057] The biggest advantage of the basket culture method for razor clams in this embodiment is that the harvesting process is very convenient and quick. Only a small amount of pond mud is needed to pick out the razor clams. Compared with the workers picking out the razor clams by hand in the clam pond, it is much more convenient and quick, and there will be no situation where razor clams are missed.

[0058] The advantages of the razor clam basket culture method and seeding device described in this embodiment are as follows:

[0059] 1) In the razor clam basket culture method of this embodiment, the use of an array of culture baskets 1 instead of clam pond culture can change the harvesting method. The operation method of "pouring out the pond mud from the culture baskets 1 and picking out the razor clams" is simpler and faster than the conventional operation method of "workers picking out the razor clams by hand in the clam pond". This greatly improves work efficiency and solves the problem mentioned in the background art 1: "Traditional culture methods require a lot of manpower and time to harvest, are slow and inefficient, and may result in missed harvesting and subsequent deterioration of the culture environment".

[0060] 2) In the razor clam basket culture method of this embodiment, a seeding device matching the culture basket 1 is used to achieve precision seeding, thereby solving the problem 2 mentioned in the background art: "It is difficult to control the culture density of each area, resulting in an excessive number of razor clam seedlings in some areas, slow growth rate, and large size difference".

[0061] 3) In the razor clam basket culture method of this embodiment, when using the culture basket 1, during the culture process, the operator can lift the culture basket 1 from the water surface to check the razor clams cultured inside, thereby solving the problem 3 mentioned in the background art: "The pond culture has a long water release and drainage cycle, making it impossible to observe the growth status of the razor clams at the bottom."

[0062] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for culturing and seeding Perna plicata in a basket, the seeding device (2) is used for seeding Perna plicata in a culturing basket (1); the culturing basket (1) is used for culturing Perna plicata; the seeding device (2) comprises a box (21) and a seeding funnel (22); a bottom plate (24) of the box (21) is provided with a plurality of seeding channels (25) vertically penetrating through the bottom plate (24); the plurality of seeding channels (25) are evenly and discretely distributed in the bottom plate (24); the seeding funnel (22) is arranged in the box (21) and the lower opening of the seeding funnel (22) is attached to the upper surface of the bottom plate (24) of the box (21); a push-pull rod (23) is fixedly arranged on the side of the seeding funnel (22); when the seeding device (2) is used for seeding Perna plicata in the culturing basket (1), the seeding device (2) with Perna plicata is placed at the upper opening of the culturing basket (1); a handle through hole is formed in the side wall of the box (21) opposite to the push-pull rod (23); the push-pull rod (23) is arranged in the handle through hole; a pull-out sealing plate (26) is arranged at the bottom of the box (21); the pull-out sealing plate (26) is assembled at the bottom of the box (21) by a sliding mechanism; the pull-out sealing plate (26) can reciprocally move at the bottom of the box (21). characterized in that The method for seeding Perna plicata in the culturing basket (1) by using the seeding device (2) is as follows: the seeding funnel (22) in the box (21) is controlled to move to one side of the box (21); a plurality of Perna plicata are placed in the seeding funnel (22); the seeding device (2) is placed at the upper opening of the culturing basket (1); the seeding funnel (22) is controlled to move in the box (21) so that the lower opening of the seeding funnel (22) slides over each seeding channel (25) of the bottom plate (24) of the box (21); the Perna plicata in the seeding funnel (22) fall into each seeding channel (25); the pull-out sealing plate (26) is pulled out from the lower surface of the bottom plate (24) of the box (21) to open the lower opening of each seeding channel (25); the Perna plicata in each seeding channel (25) fall into the culturing basket (1). ​ ​ ​ ​ ​ 2. The device for breeding and releasing of Sinonovacula constricta according to claim 1, characterized in that: ​

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