Breeding method for polyculture of holothuria scabra in pond in segmented and coarse manners

Abstract

The invention discloses a culture method for polyculture of holothuria scabra in a pond in a segmented and coarse manner, and belongs to the technical field of marine aquaculture. According to the method, Babylonia areolata and Sipunculus nudus are selected to be subjected to polyculture with holothuria scabra, different polyculture technical key points are designed according to biological characteristics and growth stages of different varieties, the pond culture space is fully utilized, ecological niche complementation is achieved, and a multi-variety mutualism ecological polyculture mode is constructed. According to the sectional type pond culture method, small-size stichopus japonicus seedlings are effectively protected, the culture space of the pond is fully utilized, the characteristics of large-size stichopus japonicus seedlings' scavengers' can be utilized, the morbidity of sipunculus nudus and babylonia areolata is reduced, a multi-variety mutualism ecological environment is constructed, yield and income are increased, and the economic benefit is increased. The development of the holothuria scabra breeding industry can be promoted, and positive significance is achieved for rejuvenation of holothuria scabra germplasm resources

Description

Technical Field

[0001] The invention relates to the technical field of marine aquaculture, in particular to a method for culturing sea cucumbers in a pond by segmenting, standardizing and coarse mixing. Background Art

[0002] The rough sea cucumber (Holothuria scabra) belongs to the phylum Echinodermata, class Holothuria, family Holothuria, genus Holothuria. It is widely distributed in the Indian Ocean and southwestern Pacific Ocean. It is abundant in resources and is an important species of tropical sea cucumber.

[0003] The rough sea cucumber is an excellent species suitable for breeding in South my country. The artificial breeding technology is relatively mature, but there is relatively little related research on outdoor coarseness, artificial breeding, pond polyculture, etc., and breeding promotion has just started, and subsequent breeding supporting technologies are relatively lacking.

[0004] Indoor standard coarse fish often have a high density. Improper feeding can easily deteriorate the water quality and cause the ginseng seedlings to become sick and die. Frequent bottom cleaning and pond emptying are required, which is a lot of work. Frequent pond emptying can easily cause mechanical damage to individuals and even death, resulting in great losses. At the same time, although ginseng seedlings have weak disease resistance and lack the ability to resist enemies when they are less than 3 cm, they can easily become food for large aquatic organisms, but their food intake is relatively small, so the breeding density can be slightly higher. Ginseng seedlings over 3 cm are larger and need to be separated. In the natural environment, they can dive into the sand to avoid enemies and have a certain purification effect on the sand layer. Indoor standard coarse fish are generally fed with artificial sea cucumber feed, which is not nutritious enough. Ginseng seedlings like to live away from light and need to be blocked by objects or dive into the sand.

[0005] Therefore, it is a technical problem that technicians in this field urgently need to solve to provide a method for outdoor coarsening and pond segmented polyculture of small-sized ginseng seedlings to fill the gap in the industry and enrich the breeding methods. Summary of the invention

[0006] In view of this, the present invention provides a method for culturing sea cucumbers in a pond by segmenting, standardizing and coarse mixing.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A method for culturing sea cucumbers in a pond by mixing them in sections and with standard and coarse materials, comprising the following steps:

[0009] (1) Preparing a breeding pond: Select an outdoor pond in which the sea cucumber and Babylonia areolata are cultured together, referred to as a snail culture pond; or the sea cucumber and Babylonia spheniscus are cultured together, referred to as a worm culture pond;

[0010] (2) Stocking: Before stocking, fill the pond with clean seawater, with the water level required to be above 1m. Regardless of the order in which the Babylonia areolata or Siegesbeckia spp. and the ginseng seedlings are stocked, the coarse-grained equipment used for the ginseng seedlings is stocked into the pond, and the coarse-grained equipment is fixed at the edge of the pond. The pond water should cover the coarse-grained equipment, and the ginseng seedlings should be stocked into the coarse-grained equipment. When stocking Babylonia areolata seedlings, sprinkle them inward along the edge of the pond. When stocking Siegesbeckia spp., stock them evenly in the pond.

[0011] (3) Front-end polyculture management: The roughing equipment is turned over regularly so that all sides of the roughing equipment can receive light, promoting the growth of benthic algae on the roughing equipment, thereby providing sufficient food for the ginseng seedlings;

[0012] (4) Post-mixed culture management: When the sea cucumber grows to more than 3 cm, remove the roughing equipment and directly put the sea cucumber seedlings into the pond. In the sea cucumber and snail mixed culture pond, the sea cucumber seedlings are placed in the inner ring of the pond and mixed with the square-spotted snails in different areas. In the sea cucumber and insect mixed culture pond, the sea cucumber seedlings are placed in the entire pond without the need for zoning. The pond should still be drained regularly to remove pests such as shrimp, crabs, and moss.

[0013] (5) Harvest: When the water temperature is suitable, small-sized starfish seedlings can be cultivated for 2 to 4 months to reach 800 to 1,200 per kilogram. They can be sold as standard coarse seedlings and harvested together with rough sea cucumber seedlings. Alternatively, the principle of catching the large and releasing the small can be adopted. After the starfish are harvested and sold, the water is refilled and the second batch of small-sized seedlings are released to continue co-culture with rough sea cucumbers. When the Babylonia spotta is cultivated for more than 6 months, the water is drained in the evening or early morning for harvesting. Since it is impossible to completely dig out all the Babylonia spotta and rough sea cucumbers at one time, water needs to be stored as soon as possible to shorten the drying time as much as possible.

[0014] Furthermore, the outdoor pond in step (1) has an area of ​​1 to 3 mu, a cement bottom, a sand layer with a thickness of 5 to 10 cm, a sand particle size of 0.3 to 2 mm, a water storage depth of more than 1.3 m, and is equipped with an oxygenation device;

[0015] The water inlet and outlet of the pond are symmetrically arranged, and a 60-mesh nylon net is installed at the water inlet to prevent enemies.

[0016] Furthermore, the marking equipment in step (2) is composed of a frame, a mesh box and a mesh;

[0017] The net box is fixed in the frame, and the net sheet is detachably arranged in the net box;

[0018] There are a plurality of mesh sheets, and the mesh sheets are irregularly distributed in the mesh box;

[0019] The net box is composed of a nylon net of 20-80 mesh;

[0020] The mesh is a nylon mesh with mesh sizes of 80-250.

[0021] The beneficial effect of adopting the above further scheme is that the net cage in the above scheme can protect small-sized ginseng seedlings from harm and greatly improve the survival rate. The mesh is placed in the net cage to increase the activity space of the ginseng seedlings, increase the growth area of ​​benthic algae, and provide more food for the ginseng seedlings.

[0022] Furthermore, the frame and cage are both cube-like, with specifications of 1×1×1m 3 The frame is made of PVC 6-way pipe, elbow, straight pipe, etc. The net box uses a full plastic zipper as the entrance and exit of the net box, and the zipper length is preferably 60 to 100 cm. The mesh is made of nylon, and 2 to 3 pieces are placed in each net box, each with an area of ​​1 to 2 m 2 .

[0023] Furthermore, the aquaculture seawater in step (2) is seawater extracted from a natural sea area and filtered through a 60-mesh bag, with a water temperature of 17°C to 32°C, a salinity of 20‰ to 35‰, a pH value of 7.8 to 8.6, a dissolved oxygen content of more than 4 mg / l, and ammonia nitrogen of less than 0.5 mg / l.

[0024] Furthermore, the ginseng seedlings released in step (2) have a body length of 0.2 cm to 0.5 cm; the amount of Babylonia areolata seedlings released is 1500 to 2500 grains per pound; and the body length of Siegespermum quadrangularis seedlings released is 0.5 to 1.5 cm.

[0025] Furthermore, the density of the ginseng seedlings released in step (2) is 200 to 500 heads per standard coarse equipment; the density of the Babylonia areolata seedlings released is 80,000 to 150,000 seeds per mu; and the density of the Siegespermum quadrangularis seedlings released is 300,000 to 500,000 per mu.

[0026] Furthermore, the rough marking equipment in step (3) is regularly turned over: every 5 days or so; in the later stage, when there is a lot of feces, the regular turning interval is shortened, and it is turned over every 2-3 days to shake off the feces, so that the habitat of the sea cucumber is kept clean and transparent, which is conducive to water exchange and stable water quality.

[0027] Further, in step (3), in the mixed culture pond of ginseng snails, the square-headed snails are placed within the range of 3 to 4 m outside the pond, and miscellaneous fish are selected as bait, and fed every evening;

[0028] In the sea cucumber and worm mixed culture pond, the starfish fry feed on the organic matter in the surface sand. The need for feeding can also be determined depending on the fertility of the sand layer. Generally, an appropriate amount of sea cucumber compound feed is selected and sprayed throughout the pond.

[0029] The ponds are drained regularly every 7 days to remove pests such as shrimps, crabs, and mosses. When the ponds are drained, the entire roughing equipment needs to be moved to other ponds to prevent the sea cucumber seedlings from drying out and dying;

[0030] Check the growth of sea cucumber seedlings regularly in the pond, and replace the net cages with larger meshes or separate the breeding according to the size of the seedlings. If it is observed that there are fewer benthic algae on the net cages or meshes, you can add sea cucumber compound feed appropriately, mix the feed with water, and pour it on the net cages.

[0031] The beneficial effects of the present invention are:

[0032] 1. The method disclosed in the present invention for directly marking small-sized ginseng seedlings in outdoor ponds avoids mechanical damage caused by frequent pond dumping, and the workload is significantly reduced. In addition, the outdoor pond has a large water body and a certain self-purification ability. The rich bacterial phase and stable ecological environment make it easier for the ginseng seedlings to stay healthy and reduce the risk of disease.

[0033] 2. The present invention adopts segmented mixed culture, that is, in the early stage (the body length of ginseng seedlings is between 0.2cm and 3cm), self-made standard coarse equipment (the main body is a net cage) is used for cultivation, and in the later stage (the body length of ginseng seedlings is more than 3cm), it is mixed with other aquatic animals in the sand. This method not only protects small-sized ginseng seedlings and makes full use of the breeding space, but also utilizes the "scavenger" characteristics of large-sized ginseng seedlings to construct an ecological environment for mutual benefit and symbiosis of multiple varieties, thereby achieving the effect of increasing production and income.

[0034] 3. The method of selecting outdoor ponds for mixed culture in the present invention can make full use of outdoor light to promote the growth of benthic diatoms. Compared with indoors, ginseng seedlings can ingest more abundant food in the outdoor natural environment and obtain sufficient and diverse nutrition.

[0035] 4. The method of adding a mesh into the self-made roughing equipment of the present invention can increase the activity space of the ginseng seedlings, increase the growth area of ​​benthic algae, provide more food for the ginseng seedlings, and at the same time expand the activity range of the ginseng seedlings, provide shielding for the ginseng seedlings, and construct a partial weak light environment.

[0036] In summary, the present invention has invented a method for mixed culture of rough sea cucumbers in a pond with segmented standard coarseness according to the culture characteristics, biological characteristics and growth stages of the mixed culture varieties, which is necessary, feasible and advanced. The results show that when mixed cultured with rough sea cucumbers, the incidence of Babylonia areolata was significantly reduced compared with the ponds where Babylonia areolata was cultivated alone in previous years, and the finished product yield was increased by about 10%.

[0037] The present invention successfully completed the experiment of scientifically co-culturing rough sea cucumber seedlings with high-value marine products in outdoor ponds through the above technical means, developed a new model of segmented co-culture, achieved the purpose of improving the growth rate and survival rate of sea cucumber seedlings, and promoted the increase of production and income of co-cultured varieties at the same time. The method is original and advanced and has extremely high practical value. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1

[0040] On June 15, 2023, the applicant will use the spotted snail seedlings, starfish seedlings, and rough sea cucumber seedlings cultivated by himself for mixed breeding.

[0041] While carrying out mixed culture, a comparative test of small-sized seedlings was set up in an indoor cement pool. The size of the indoor seedlings was consistent with the initial size of the outdoor segmented mixed culture, with a body length of 0.1cm to 0.3cm and a density of 300 heads / m 2 . Change 50% of the water daily, feed the sea cucumbers with an appropriate amount of feed, and empty the pool every 5 days. The seawater used is sand-filtered seawater, and the salinity and pH are consistent with those in the natural sea area. The daytime light intensity is within the range of 500-1000lx.

[0042] It was measured that during the initial mixed culture, the specifications of the spotted snail seedlings were 1,800 grains per catty, the body length of the starfish seedlings was 0.5 to 1 cm, the number per catty was about 20,000, and the body length of the rough sea cucumber was between 0.1 cm and 0.3 cm.

[0043] The specific steps for standard coarse mixed breeding are as follows:

[0044] (1) Prepare the breeding pond: Select two outdoor ponds of 3 mu each, and place them with sand 5-10 cm thick (particle size 0.3-2 mm), which can store water over 1.3 m, and equip them with oxygenation equipment. Install a 60-mesh nylon net at the water inlet to prevent predators. The water inlet and outlet are located on diagonal lines for easy water inlet and outlet.

[0045] (2) Make standard equipment: choose 80 mesh for the mesh box and 100 mesh for the mesh sheet. Place 1m 2 2 pieces of mesh. According to the continuous growth of ginseng seedlings, the mesh size of the net box was gradually changed to 60 mesh, 40 mesh, and 20 mesh.

[0046] (3) Stocking: Before stocking, clean seawater should be stored, and the water level should be above 1m. First, stock the ginseng and snail mixed culture pond with the square-banded snails. 250,000 pieces of the 3-mu pond were stocked and evenly sprinkled along the edge of the pond. Then, the rough sea cucumber coarse-graining equipment was placed in the pond, and 300 rough sea cucumber seedlings were placed in each cage. First, stock 1 million square star worm seedlings in the ginseng and worm mixed culture pond, and then the rough sea cucumber coarse-graining equipment was placed in the pond, and 300 rough sea cucumber seedlings were placed in each cage. 12 stocking equipments were placed in each mixed culture pond.

[0047] (4) Management of the front stage of mixed culture: The roughing equipment is placed around the pond and turned over regularly, once every two days, so that all sides of the cage can get light, promote the growth of benthic algae, and thus provide sufficient food for the sea cucumber seedlings. In the sea cucumber and snail mixed culture pond, for the convenience of feeding, the square-spotted snail is placed within the outer ring of 3 to 4 meters around the pond, and miscellaneous fish are selected as bait and fed every evening; in the sea cucumber and worm mixed culture pond, the square star worm seedlings mainly feed on the organic matter of the surface sand. Whether to feed depends on the fertility of the sand layer. Choose an appropriate amount of sea cucumber compound feed and sprinkle it on the whole pond. The two mixed culture ponds are drained regularly in turn to remove shrimps, crabs, moss and other pests. When the pond is drained, the entire roughing equipment is moved to another pond to prevent the sea cucumber seedlings from drying out and dying. Check the growth of the sea cucumber seedlings regularly, and replace the cages with larger meshes according to the size of the individuals, or separate the culture. If it is observed that there are fewer benthic algae on the cages or meshes, add appropriate sea cucumber compound feed, mix the feed with water, and sprinkle it on the cages.

[0048] (5) Post-mixed culture management: After 45 days, sampling and measurement show that about 40% of the rough sea cucumber seedlings are larger than 3 cm. The sea cucumber seedlings larger than 3 cm are directly scattered into the pond for mixed culture with star worms, and the remaining small-sized sea cucumber seedlings are continued to be placed in the coarse equipment for feeding. Because the density has changed, it is no longer compared with the cement pool coarse. In the sea cucumber and snail mixed culture pond, since the square-spotted baby wind snails are distributed within the range of 3 to 4 meters of the outer ring of the pond, the sea cucumber seedlings can be placed in the inner ring of the pond and mixed with the square-spotted baby wind snails in different areas. In the sea cucumber and insect mixed culture pond, the whole pond can be placed without zoning. It is still necessary to drain the water regularly and remove pests such as shrimps, crabs, and moss.

[0049] (6) Harvest: After 2.5 months of cultivation, the Siegeselberg seedlings were observed to grow to 1,000 per kilogram and can be sold as standard coarse seedlings. Compared with the ponds that only cultivated Siegeselberg in previous years, the growth rate of Siegeselberg seedlings increased by about 15%. The pond water was drained in the early morning, and a total of 300,000 Siegeselberg seedlings were dug up for sale according to the principle of catching the big ones and releasing the small ones. The pond was then refilled with water and the second batch of small-sized Siegeselberg seedlings were released to continue mixed cultivation with rough sea cucumbers.

[0050] The spotted babylonia needs to be cultured for more than 6 months. During the mixed culture period, the growth of the seedlings in the cages needs to be checked frequently, and the rough sea cucumbers larger than 3 cm need to be removed from the cages for mixed culture or sale. When the spotted babylonia reaches 50 to 60 heads per kilogram, it is harvested and sold. When harvesting, the water needs to be drained and dug in the evening or early morning. It is impossible to completely dig out all the spotted babylonia and rough sea cucumbers at one time. Water needs to be stored as soon as possible to shorten the drying time as much as possible. A total of 2,850 kilograms of finished spotted babylonia were harvested from this mixed culture. Compared with the ponds that only cultured spotted babylonia in previous years, the output has increased by about 10%.

[0051] (7) Comparison results

[0052] As shown in Table 1, the growth rate of the ginseng seedlings in the outdoor pond with segmented thickening was slightly lower than that in the indoor cement pool on the 15th day, but was higher than that in the indoor cement pool on the 30th and 45th days.

[0053] As shown in Table 2, the survival rate of ginseng seedlings in outdoor ponds with segmented thickening was significantly lower than that in indoor cement pools on the 15th day, but was higher than that in indoor cement pools on the 30th and 45th days.

[0054] Table 1: After using the present invention, the average body length (cm) of the coarse ginseng seedlings is compared with that of the indoor cement pool standard:

[0055] Breeding time 15d 30d 45d Indoor cement pool marker 0.312±0.0523 0.705±0.256 2.915±0.458 Pond segmentation 0.305±0.0665 1.904±0.392 3.821±0.913

[0056] Note: 30 ginseng seedlings were randomly selected each time and the average value was taken.

[0057] Table 2: After using the present invention, the survival rate (%) of the coarse ginseng seedlings was compared with that of the indoor cement pool standard

[0058] Breeding time 15d 30d 45d Indoor cement pool marker 87.47％ 72.46％ 60.52％ Pond segmentation 77.35％ 73.77％ 66.47％

[0059] Note: Survival rate = number of cells measured per cubic meter of water / initial number.

[0060] Example 2

[0061] On June 2, 2024, the applicant will use the spotted snail seedlings, starfish seedlings, and rough sea cucumber seedlings cultivated by himself for mixed breeding.

[0062] While conducting segmented polyculture, a 60-day full-course cage culture comparison test (three cages were used) was conducted in an outdoor pond to demonstrate the beneficial effects of segmented polyculture. The cages were selected with 60 mesh and the internal mesh was selected with 80 mesh. The specifications and density of the ginseng seedlings used were exactly the same as the initial specifications and density of outdoor segmented polyculture, with a body length of 0.1cm to 0.3cm and a density of 400 heads / m 2 .

[0063] At the beginning of mixed culture, the specifications of the spotted snail seedlings were measured to be 2,500 grains per catty, the body length of the starfish seedlings was 0.5 to 1.5 cm, the number was about 18,000 per catty, and the body length of the rough sea cucumber was between 0.1 cm and 0.3 cm.

[0064] The specific steps for standard coarse mixed breeding are as follows:

[0065] (1) Prepare the breeding pond: Select two outdoor ponds of 3 mu each, and place the ponds with a sand thickness of 5-10 cm (particle size 0.3-2 mm), which can store water for more than 1.3 m. Install a 60-mesh nylon net at the water inlet to prevent predators. The water inlet and outlet are located on the diagonal lines for easy water inlet and outlet.

[0066] (2) Make standard equipment: Choose 60 mesh for the net box and 80 mesh for the internal mesh. Place 3 pieces of 1m2 mesh in each net box. As the ginseng seedlings continue to grow, the mesh size of the net box is gradually changed to 40 mesh and 20 mesh.

[0067] (3) Stocking: Before stocking, clean seawater should be stored, and the water level should be above 1m. First, stock the ginseng and snail mixed culture pond with the square-banded snails. 300,000 pieces of the 3-mu pond were stocked and evenly sprinkled along the edge of the pond. Then, the rough sea cucumber coarse-graining equipment was put into the pond, and 400 rough sea cucumber seedlings were put into each cage. First, stock 800,000 square star worm seedlings in the ginseng and worm mixed culture pond, and then the rough sea cucumber coarse-graining equipment was put into the pond, and 400 rough sea cucumber seedlings were put into each cage. 10 stocking equipments were put into each mixed culture pond.

[0068] (4) Management of the front stage of mixed culture: The roughing equipment is placed around the pond and turned over regularly, once every two days, so that all sides of the cage can get light, promote the growth of benthic algae, and thus provide sufficient food for the sea cucumber seedlings. In the sea cucumber and snail mixed culture pond, for the convenience of feeding, the square-spotted snail is placed within the outer ring of 3 to 4 meters around the pond, and miscellaneous fish are selected as bait and fed every evening; in the sea cucumber and worm mixed culture pond, the square star worm seedlings mainly feed on organic matter in the surface sand, and whether they need to be fed can be determined based on the fertility of the sand layer. The two mixed culture ponds are drained regularly in turn to remove shrimps, crabs, moss and other pests. When the pond is drained, the entire roughing equipment needs to be moved to another pond to prevent the sea cucumber seedlings from drying out and dying. Check the growth of the sea cucumber seedlings regularly and replace the cages with larger meshes according to the size of the individual. If it is observed that there are fewer benthic algae on the cages or mesh, you can add sea cucumber compound feed appropriately, mix the feed with water and pour it on the cages.

[0069] (5) Management of mixed culture in the latter stage: After 30 days of culture, some ginseng seedlings have grown to more than 3 cm and are removed from the cages. In the ginseng and snail mixed culture pond, since the Babylonia square snail is distributed within the 3-4m range of the outer ring of the pond, the ginseng seedlings are placed in the inner ring of the pond and mixed with the Babylonia square snail in different areas. In the ginseng and insect mixed culture pond, the ginseng seedlings are placed in the entire pond without the need for division. The water is still drained regularly to remove pests such as shrimps, crabs, and moss.

[0070] (6) Harvest: On September 5, 2024, it was observed that after three months of cultivation, the starfish seedlings had grown to 800 per kilogram and could be sold as standard coarse seedlings. The pond water was drained in the early morning, and a total of 280,000 starfish seedlings were dug for sale based on the principle of catching the big and releasing the small. The water was then refilled, and the remaining seedlings continued to be mixed with rough sea cucumbers. It usually takes more than six months to cultivate the Babylonia square spot snails, and they are harvested when they reach 50 to 60 per kilogram. At present, the size of the Babylonia square spot snails is about 100 per kilogram, which has not yet reached the sales specifications.

[0071] (7) Comparison results: Because the density of ginseng seedlings in the segmented polyculture experiment had changed in the middle of 60 days, the survival rate was not compared this time, only the growth rate was compared. As shown in Table 3, the segmented polyculture did not have obvious advantages in the early stage, but after 40 days, some large-sized ginseng seedlings could be put into the pond and buried in the sand. On the one hand, the density in the cage was reduced, which helped the small-sized ginseng seedlings to obtain more food and accelerate their growth. On the other hand, the large-sized sea cucumbers buried in the sand could absorb more abundant nutrients in the natural environment. Therefore, the segmented polyculture method can enable ginseng seedlings to achieve a higher growth rate.

[0072] Table 3: Comparison of average specifications of the standard coarse ...

[0073] Breeding time 20d 40d 60d Outdoor pond full cage marking 1.812±0.353 3.128±0.453 3.235±0.655 Outdoor pond segmented polyculture standard 1.786±0.328 3.698±0.912 5.982±0.958

[0074] Note: When making calculations, 50% of the growth data of outdoor segmented polycultured ginseng seedlings came from the ginseng seedlings in cages, and 50% came from the ginseng seedlings in ponds.

[0075] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for breeding sea cucumbers in a pond by mixing them in sections and coarse and fine sections, characterized in that: The following steps are involved: (1) Preparing a breeding pond: Select an outdoor pond, and culture the sea cucumber with Babylonia areolata or the sea cucumber with Sipuncula fasciatus in the pond; (2) Stocking: Before stocking, fill the pond with clean seawater. The water level should be above 1m. Stock the coarse-grained equipment used for ginseng seedlings into the pond and fix it at the edge of the pond. The pond water should cover the coarse-grained equipment and then stock the ginseng seedlings into the coarse-grained equipment. When stocking Babylonia areca seedlings, sprinkle them inward along the edge of the pond. When stocking Siegesbeckia spp. seedlings, stock them evenly in the pond. (3) Front-end polyculture management: The roughing equipment is turned over regularly so that all sides of the roughing equipment can receive light, promoting the growth of benthic algae on the roughing equipment, thereby providing sufficient food for the ginseng seedlings; (4) Post-mixed culture management: When the sea cucumber grows to more than 3 cm, remove the roughing equipment and directly put the sea cucumber seedlings into the pond. In the sea cucumber and snail mixed culture pond, the sea cucumber seedlings are placed in the inner ring of the pond and mixed with the square-spotted snails in different areas; in the sea cucumber and insect mixed culture pond, the sea cucumber seedlings are placed in the whole pond without the need for zoning; (5) Harvest: When the water temperature is suitable, small-sized starfish seedlings can be cultivated for 2 to 4 months to reach 800 to 1,200 per kilogram. They can be sold as standard coarse seedlings and harvested together with rough sea cucumber seedlings. Alternatively, the principle of catching the large and releasing the small can be adopted. After the starfish are harvested and sold, the water is refilled and the second batch of small-sized seedlings are released to continue co-culture with rough sea cucumbers. When the Babylonia spotta is cultivated for more than 6 months, the water is drained in the evening or early morning for harvesting. Since it is impossible to completely dig out all the Babylonia spotta and rough sea cucumbers at one time, water needs to be stored as soon as possible to shorten the drying time as much as possible.

2. The method for breeding sea cucumbers in a pond in accordance with claim 1, characterized in that: The outdoor pond in step (1) has an area of ​​1 to 3 mu, a cement bottom, a sand layer with a thickness of 5 to 10 cm, a water storage depth of more than 1.3 m, and is equipped with an aeration device; The water inlet and outlet in the pond are symmetrically arranged, and a 60-mesh nylon net is installed at the water inlet.

3. A method for breeding sea cucumbers in a pond in accordance with claim 1, characterized in that: The marking equipment in step (2) is composed of a frame, a mesh box and a mesh; The net box is fixed in the frame, and the net sheet is detachably arranged in the net box; There are a plurality of mesh sheets, and the mesh sheets are irregularly distributed in the mesh box; The net box is composed of a nylon net of 20-80 mesh; The mesh is a nylon mesh with mesh sizes of 80-250.

4. The breeding method of a rough sea cucumber pond segmented coarse culture according to claim 1, characterized in that: The aquaculture seawater in step (2) is seawater extracted from a natural sea area and filtered through a 60-mesh mesh bag, with a water temperature of 17°C to 32°C, a salinity of 20‰ to 35‰, a pH value of 7.8 to 8.6, a dissolved oxygen content of more than 4 mg / l, and ammonia nitrogen of less than 0.5 mg / l.

5. The method for breeding sea cucumber in a pond in accordance with claim 1, characterized in that: The ginseng seedlings released in step (2) have a body length of 0.2 cm to 0.5 cm; the amount of Babylonia areolata seedlings released is 1500 to 2500 grains per jin; and the body length of Siegespermum truncatum seedlings released is 0.5 to 1.5 cm.

6. A method for breeding sea cucumbers in a pond in accordance with claim 1, characterized in that: The density of the ginseng seedlings released in step (2) is 200 to 500 heads per standard coarse equipment; the density of the Babylonia areolata seedlings released is 80,000 to 150,000 seeds per mu; and the density of the Siegespermum truncatum seedlings released is 300,000 to 500,000 per mu.

7. The method for breeding sea cucumbers in a pond in accordance with claim 1, characterized in that: Step (3) In the pond where the Babylonia areolata is cultured, the Babylonia areolata is placed within a 3-4 m outer ring around the pond, and miscellaneous fish are selected as bait, which is fed every evening; In the ginseng-worm mixed culture pond, the Siegesbeckia larvae feed on organic matter in the surface sand; The ponds are drained regularly to remove pests. When the ponds are drained, the entire roughing equipment needs to be moved to other ponds to prevent the sea cucumber seedlings from drying out and dying. Check the growth of sea cucumber seedlings in the pond regularly, and replace the net cages with larger meshes or spread out the breeding according to the individual size of the seedlings.