CN112913724A - Indoor high-density circulating water overwintering device and method for young urechis unicinctus - Google Patents
Indoor high-density circulating water overwintering device and method for young urechis unicinctus Download PDFInfo
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- CN112913724A CN112913724A CN202110170860.XA CN202110170860A CN112913724A CN 112913724 A CN112913724 A CN 112913724A CN 202110170860 A CN202110170860 A CN 202110170860A CN 112913724 A CN112913724 A CN 112913724A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/045—Filters for aquaria
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/06—Arrangements for heating or lighting in, or attached to, receptacles for live fish
- A01K63/065—Heating or cooling devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention discloses a device and a method for over-wintering young urechis unicinctus indoor high-density circulating water, wherein the over-wintering device comprises: the system comprises a plurality of culture ponds, a water collecting tank, a micro-filter, a balance pond, a biochemical treatment system, an oxygenation system, a water supplementing system and a temperature control system; the culture pond, the water collecting tank, the micro-filter, the balance pond and the biochemical treatment system are sequentially connected, and the biochemical treatment system is connected with the culture pond; the oxygenation system is respectively connected with the culture pond and the biochemical treatment system, and the water supplementing pond and the temperature control system are connected with the balance pond; wherein, all be equipped with the adhesion base outrigger in every breed pond, be equipped with a plurality of layers of adhesion base on the adhesion base outrigger. The invention changes the existing plane breeding mode of the urechis unicinctus, improves the breeding density of unit water body, is beneficial to discharging residual bait, excrement and the like, and improves the living environment of the urechis unicinctus; in addition, the quantity of water for circulating aquaculture is small, an environment-friendly temperature control means is adopted, and the pollution discharge is reduced while the temperature control cost is reduced.
Description
Technical Field
The invention relates to the technical field of aquatic animal overwintering cultivation, in particular to an indoor high-density circulating water overwintering device and method for young urechis unicinctus.
Background
The urechis unicinctus is commonly called as the sea intestine and has the life habits of sand diving and food filtering, and the food intake is reduced and even stopped when the water temperature is higher than 27 ℃ or lower than 5 ℃, namely the eyes are sealed. The method has two major and minor breeding periods of spring and autumn, and seedling raising in spring (beginning in 4-5 months) is generally adopted in production, and seedling raising is carried out in autumn of the year (9-10 months) or in spring of the next year (3-5 months).
The method of directly spreading sand in an indoor cement pond for overwintering is mostly adopted for seed throwing in spring, and a plurality of problems exist. Firstly, seedling protection workshops are generally made of cement ground, the water temperature is low, in order to weaken the phenomenon of hole sealing, the temperature needs to be raised in modes of boilers and the like, the temperature needed by cultivation is required to be achieved, meanwhile, the purpose of changing a large amount of water is achieved, the required cost is high, and environmental pollution is caused to a certain degree. And secondly, the overwintering period is as long as 5 months, sand is not changed in order to reduce the seedling damage, and a large amount of organic pollutants such as residual bait, excrement and the like are accumulated in the culture pond and are difficult to decompose, so that the sand is blacked and smelly, and the survival and growth of the seedlings are seriously influenced. Thirdly, the cement pond is directly paved with sand, only the area of the bottom of the pond is utilized, the water utilization rate is low, and the culture density of the unit water body is low.
Disclosure of Invention
The invention aims to provide an indoor high-density circulating water overwintering device and method for young urechis unicinctus, so that the technical problems in the prior art are solved, the existing plane breeding mode of the urechis unicinctus is changed, the breeding density of a unit water body is improved, the living environment of the urechis unicinctus is improved, the temperature control cost is reduced, and meanwhile, the pollution discharge is reduced.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an indoor high-density circulating water overwintering device for young urechis unicinctus, which comprises: the system comprises a plurality of culture ponds, a water collecting tank, a micro-filter, a balance pond, a biochemical treatment system, an oxygenation system, a water supplementing system and a temperature control system;
the culture pond, the water collecting tank, the micro-filter, the balance pond and the biochemical treatment system are sequentially connected, and the biochemical treatment system is connected with the culture pond; the oxygenation system is respectively connected with the culture pond and the biochemical treatment system, and the water supplementing pond and the temperature control system are connected with the balance pond;
every all be equipped with the adhesion base outrigger in the breed pond, be equipped with a plurality of layers of adhesion base on the adhesion base outrigger.
Preferably, an overflow pipe is connected between the culture pond and the water collecting tank, and water in the culture pond flows to the water collecting tank through the overflow pipe; and the upper end of the overflow pipe is 8-10 cm lower than the upper end of the culture pond.
Preferably, the bottom of the water collecting tank is lower than the water outlet of the overflow pipe, the distance between the bottom of the water collecting tank and the water outlet of the overflow pipe is larger than 40 cm, the water collecting tank is inclined downwards towards the direction of the micro-filter by 1-5 degrees, and the water collecting tank is covered with a glass fiber reinforced plastic grid or a cover plate.
Preferably, the adhesion bases comprise a box body, a plurality of through holes are formed in the bottom of the box body, equal-length ropes are fixedly connected to four corners of the upper end and four corners of the lower end of the box body respectively, the ropes at the four corners of the upper end of the box body are connected with a hook together, the ropes at the four corners of the lower end of the box body are connected with a ring together, and the adhesion bases at two adjacent layers and the adhesion base at the uppermost layer are connected with the adhesion base suspension bracket through the rings and the hooks; a first screen, a second screen and a sand layer are sequentially paved inside the box body from bottom to top.
Preferably, the first screen is an 80-mesh screen, the second screen is a 40-mesh screen, sand in the sand layer is sequentially processed through the 60-mesh screen and the 80-mesh screen, and the thickness of the sand layer is 4-5 cm.
Preferably, the row spacing between adjacent attachment bases is not less than 10 cm, the column spacing is not more than 5 cm, the interlayer spacing is more than 10 cm, and the distance between the lowermost attachment base and the bottom of the culture pond is more than 10 cm.
Preferably, the biochemical treatment system comprises a third water pump, a biological filter and an ultraviolet germicidal lamp; the third water pump is connected between the biochemical treatment system and the culture pond and is used for pumping the water treated by the biochemical treatment system into the culture pond; the biological filter is filled with K3 filter materials, wherein the filling rate of K3 filter materials in the biological filter is 25-40%.
The invention also provides an indoor high-density circulating water overwintering method for young urechis unicinctus, which specifically comprises the following steps: seed putting, device temperature rising, overwintering management, device temperature reduction and young urechis unicinctus harvesting.
Preferably, in the fry throwing process, the fry throwing density does not exceed 1000 fries per square meter.
Preferably, in the process of collecting and catching the young urechis unicinctus, the culture pond is thoroughly drained in batches, the drained water enters the balance pond, then the bottom of the culture pond is flushed, and then the water in the balance pond is supplemented to the original water level of the culture pond through the biochemical treatment system.
The invention discloses the following technical effects:
compared with the prior art, the invention has the advantages that the existing plane breeding mode of urechis unicinctus is changed, and the breeding density of unit water body is improved; meanwhile, the suspended attaching base is beneficial to discharging residual bait, excrement and the like, so that the deposition of organic matters in a sand bed and a culture pond is reduced, and the living environment of urechis unicinctus is improved; in addition, the quantity of water for circulating aquaculture is small, an environment-friendly temperature control means is adopted, and the pollution discharge is reduced while the temperature control cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of an indoor high-density circulating water overwintering device for young urechis unicinctus;
FIG. 2 is a schematic diagram of an exemplary embodiment of an adhesion group;
FIG. 3 is a plan view of a cultivation system according to an embodiment of the present invention;
FIG. 4 is a flow chart of the indoor high-density circulating water overwintering method for young urechis unicinctus.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The first embodiment is as follows:
referring to fig. 1 to 3, the present embodiment provides an indoor high-density circulating water overwintering device for urechis unicinctus, including: the system comprises a plurality of culture ponds, a water collecting tank, a micro-filter, a balance pond, a biochemical treatment system, an oxygenation system, a water supplementing system and a temperature control system;
the culture pond, the water collecting tank, the micro-filter, the balance pond and the biochemical treatment system are sequentially connected, and the biochemical treatment system is connected with the culture pond; the oxygenation system is respectively connected with the culture pond and the biochemical treatment system, and the water supplementing pond and the temperature control system are connected with the balance pond;
every all be equipped with the adhesion base outrigger in the breed pond, be equipped with a plurality of layers of adhesion base on the adhesion base outrigger.
The culture pond is used for culturing urechis unicinctus; the cultivation pond is rectangular, the depth is 1.2-1.5 m, the length-width ratio is 3-5, an overflow pipe is connected between the cultivation pond and the water collecting tank, water in the cultivation pond flows to the water collecting tank through the overflow pipe, the pipe diameter of the overflow pipe is not less than 110 mm, the PVC material is located in the center of one end of the cultivation pond, and the upper end of the overflow pipe is lower than the upper end of the cultivation pond by 8-10 cm. In the embodiment, the plurality of culture ponds are 20 cement ponds with the length of 6 meters multiplied by 2 meters multiplied by 1.5 meters; the overflow pipe is a PVC pipe with the diameter of 110 mm, and the height of the overflow pipe is 10 cm lower than the upper end of the culture pond; the maximum water capacity of the 20 culture ponds is 360 cubic meters.
The attachment base suspension bracket is made of stainless steel, the pipe diameter is larger than 30 mm, and the wall thickness is larger than 3 mm; in the embodiment, the attachment base suspension bracket is preferably a stainless steel pipe with an outer diameter of 40 mm and a wall thickness of 3 mm; the two ends of the attachment base suspension bracket hung with the attachment base are transversely placed on the wall of the culture pond and are arranged in parallel with the short edge of the culture pond.
The attachment base comprises a box body, a plurality of through holes are formed in the bottom of the box body, equal-length ropes are fixedly connected to four corners at the upper end and four corners at the lower end of the box body respectively, the ropes at the four corners at the upper end of the box body are connected with a hook together, the ropes at the four corners at the lower end of the box body are connected with a ring together, and a first screen, a second screen and a sand layer are laid in the box body from bottom to top in sequence; the first screen is an 80-mesh screen; the height of the box body is 5-8 cm, the width of the box body is not more than 20 cm, the length of the box body is not more than 50 cm, and two adjacent layers of the attachment bases and the uppermost layer of the attachment bases are connected with the attachment base suspension bracket through a ring and a hook; the sand in the sand layer is sequentially processed through a 60-mesh screen and an 80-mesh screen, and the thickness of the sand layer is 4-5 cm; the row spacing (parallel to the long edge of the culture pond is a row) between adjacent attachment bases is not less than 10 cm, the column spacing is not more than 5 cm, the interlayer spacing is more than 10 cm, and the distance between the attachment bases on the bottommost layer and the bottom of the pond is more than 10 cm. In the embodiment, the size of the box body is preferably 50 cm × 10 cm × 5 cm, the box body is formed by welding PVC plates, and round holes with the diameter of 8mm are uniformly distributed at the bottom of the box body; the hook and the circular ring are made of stainless steel; the first screen is an 80-mesh screen, the second screen is a 40-mesh screen, the particle size of the sand is 80-60 meshes, and the thickness of the sand layer is 4 cm. The row spacing between adjacent attachment bases is preferably 10 cm, the layer spacing is preferably 20 cm, and the distance between the lowermost attachment base and the bottom of the cell is preferably 15 cm. According to the specification of the culture pond, the specification and the arrangement mode of the attachment bases, 5 layers of attachment bases can be placed in each culture pond, each layer of attachment base comprises 360 boxes in total of 9 rows and 8 columns, the uppermost layer of attachment base is hung on the attachment base hanging support through the hook, and the attachment base on the lower layer is hung on the ring of the attachment base on the upper layer through the hook.
The water collecting tank is used for discharging sewage discharged by the culture pond to the micro-filter; the width of the water collecting tank is larger than 60 cm, the bottom of the water collecting tank is lower than the water outlet of the overflow pipe, the distance between the bottom of the water collecting tank and the water outlet of the overflow pipe is larger than 40 cm, the water collecting tank is inclined downwards to the direction of the micro-filter by 1-5 degrees, and the water collecting tank is covered with a glass fiber reinforced plastic grid or a cover plate made of other materials, so that workers and transport vehicles can conveniently pass through the water collecting tank. In this embodiment, the bottom of the water collection tank is 50 cm lower than the water outlet of the overflow pipe, the width of the water collection tank is preferably 90 cm, and a glass fiber reinforced plastic grid with the width of 10 m covers the water collection tank.
The micro-filter is used for removing solid particles in the sewage and collecting urechis unicinctus escaping with water flow; the micro-filter comprises a water inlet and a water outlet, the water inlet is connected with the water collecting tank, and the water outlet is connected with the balance tank; the water inlet of the micro-filter is lower than the bottom of the water collecting tank, and the distance between the water inlet of the micro-filter and the bottom of the water collecting tank is more than 10 cm; the microfiltration machine is a screen filter for intercepting fine suspended matters and is provided with a rotary drum, the rotary drum is a drum-shaped metal frame, and the rotary drum rotates around a horizontal shaft; and a support net and a working net woven by stainless steel wires are arranged on the rotary drum, so that solid-liquid separation of solid particles in the closure aquaculture water body is realized. Back flushing pump in timeAnd flushing to prevent stalling. The water body containing the residual bait excrement enters a sewage disposal basin after being washed, and the young urechis unicinctus can be prevented from flowing into a water treatment system; wherein the mesh aperture of the working net is 0.08mm, and the floor area of the micro-filter is 3m2And the maximum allowable flow of the micro-filter is 50 tons/hour.
The balance pool adjusts the water temperature and the water quantity of the overwintering device based on the temperature control system and the water supplementing system, so that the water temperature of the overwintering device is stabilized in a temperature range suitable for the growth of urechis unicinctus, and the water quantity of the overwintering device is kept stable; the upper end of the balance pond is lower than the water outlet of the micro-filter, the distance between the upper end of the balance pond and the water outlet of the micro-filter is larger than 10 cm, the water capacity of the balance pond is 1/5-1/3 of the maximum water capacity of the culture pond, and in the embodiment, the water capacity of the balance pond is 140 cubes.
The temperature control system comprises a temperature acquisition device, a temperature regulation device and a control unit, wherein the temperature acquisition device and the temperature regulation device are electrically connected with the control unit, the temperature regulation device is connected with the balance pool through a pipeline, a first water pump is connected between the temperature regulation device and the balance pool, and the first water pump is connected with the control unit; the temperature acquisition device adopts a temperature sensor and is used for acquiring the temperature of water in the balance pool; the temperature adjusting device is used for adjusting the temperature of the water in the balancing tank; when the temperature of the water in the balancing tank is lower than the preset temperature, the water is pumped into the temperature adjusting device through the first water pump, the temperature is adjusted, and then the water flows back to the balancing tank, wherein the preset temperature is 20 ℃. Wherein, the temperature adjusting device comprises one of an air source heat pump and a water source heat pump. Wherein the flow rate (cubic meter per hour) of the first water pump is greater than 1/10 of the total water amount of the overwintering device.
The water supplementing system comprises a water supplementing pool and a second water pump, the water storage capacity of the water supplementing pool is 1-1.5 times of the total water quantity of the overwintering device, and the maximum water supplementing flow of the water supplementing system is greater than 1/6 of the total water quantity of the overwintering device; in this embodiment, the capacity of the water replenishing pool is 600 cubes.
The biochemical treatment system is used for removing harmful substances such as ammonia nitrogen, nitrite and the like in the sewage; a water inlet pipe is connected between the biochemical treatment system and the culture pond, and water in the biochemical treatment system flows to the culture pond through the water inlet pipe. The biochemical treatment system comprises a third water pump, a biological filter and an ultraviolet germicidal lamp; the third water pump is connected between the biochemical treatment system and the culture pond and is used for pumping the water treated by the biochemical treatment system into the culture pond; the biological filter is filled with K3 filter materials, wherein the filling rate of K3 filter materials in the biological filter is 25-40%; the power of the ultraviolet germicidal lamp is 8-12 watts per square of water per hour.
The oxygen increasing system is used for supplying oxygen to the culture pond and the biochemical treatment system; the oxygenation system comprises a first branch and a second branch, the first branch is connected with the culture pond, and the second branch is connected with the biochemical treatment system; the first branch is provided with air stones, and each square meter of the air stones is 0.5-1.2; and the second branch adopts PVC pipes for punching and aeration, and the gas-water ratio is more than 6.
The device in the embodiment is adopted for carrying out the overwintering culture of young urechis unicinctus at home and abroad, which is the first time, changes the existing plane culture mode of the urechis unicinctus, and improves the culture density of unit water body; meanwhile, the suspended attaching base is beneficial to discharging residual bait, excrement and the like, reduces the deposition of organic matters in sand beds and culture ponds, and improves the living environment of urechis unicinctus; in addition, the quantity of water changed in the recirculating aquaculture is small, an environment-friendly temperature control means is adopted, and the pollution emission is reduced while the temperature control cost is reduced.
Example two:
referring to fig. 4, the present embodiment provides an indoor high-density circulating water overwintering method for urechis unicinctus, specifically including:
seed putting: in 9-10 middle ten days of the year, putting the attachment base paved with the fine sand, and fully wetting the fine sand by using culture seawater; and then young urechis unicinctus is put on the surface of the sand layer, and the density is not more than 1000 pieces/square meter (calculated by the area of the sand).
In this embodiment, in 10 th of the month, the attachment base with the fine sand is laid and fully wetted with the culture seawater; then young urechis unicinctus with the average specification of 5000 heads/kg is put on the surface of the sand layer, and the density is 1000 heads/square meter (calculated by the area of the sand).
Heating the device: after the young urechis unicinctus submerged sand is filled, the culture pond, the biological filter, the balance pond and the water supplementing pond are full of water, and the circulating system is started to operate; raising the temperature of the overwintering device by 1-2 ℃ to 22-24 ℃ every day; and feeding the young urechis unicinctus during the temperature rise period, and carrying out siphon pollution discharge on the bottom of the culture pond once a day.
In this embodiment, the temperature is raised by 2 ℃ to 22 ℃ every day, and the baits for feeding the young urechis comprise, but are not limited to, unicellular algae, rhodotorula benthamii and spirulina powder.
Overwintering management: after the temperature rise is finished, feeding the commercial compound feed of the urechis unicinctus gradually, controlling the feeding amount to be 3-5%, controlling the feeding amount twice a day for 1.5-2 hours each time at 09:00 and 18:00, and ensuring that the water body does not circulate during the feeding period; sprinkling microecologics such as EM bacteria and the like to the culture pond by 20-25 ml/cubic meter every day; and (3) thoroughly draining the culture pond in batches every 6-7 days, enabling the drained water to enter a balance pond, then washing the bottom of the culture pond, discharging dirt out of the overwintering device, and then supplementing the water in the balance pond to the original water level through a biological filter.
Cooling the device: in the embodiment, when the outside natural water temperature rises to 12-15 ℃ in 3-4 months of the next year after the seedlings are thrown, the temperature of the overwintering device is lowered by 1-2 ℃ every day until the temperature is consistent with the natural water temperature, wherein the bait throwing amount is gradually reduced to 1-3% of the weight of the urechis unicinctus during the temperature lowering period.
Catching young urechis unicinctus: in 4 th of the middle ten days of the next year, the culture pond is drained completely in batches, the drained water enters a balance pond, a string of attachment bases is arranged each time, and young urechis unicinctus in each layer of attachment bases is collected from bottom to top in sequence. Lifting the edge of the second screen with 40 meshes, and simultaneously impacting a sand layer with water flow to make the sand leak and the young urechis unicinctus stay in the screen with 40 meshes; and then transporting the sand in the attaching base out of the workshop, thoroughly discharging and cleaning the overwintering device, discharging the dirt out of the overwintering device, and supplementing the water in the balance pond to the original water level through a biochemical treatment system.
Through 6 months of circulating water overwintering cultivation, the yield of the urechis unicinctus young urechis is 930-960 heads per square meter (counted by attaching base sand layer), the individual weight reaches 7 g, the unit area yield is 6.58 kg, and the unit water yield is 7.42 kg.
The embodiment of the invention only gives the related device setting parameters with the main purpose of ensuring the survival quantity of young urechis unicinctus. According to the specific requirements of production purposes, the specifications of the culture pond, the specifications of the attachment bases, the arrangement mode and the like are selected differently, but the requirements of materials, device matching and culture growth are met.
Compared with the prior art, the invention has the advantages that the existing plane breeding mode of urechis unicinctus is changed, and the breeding density of unit water body is improved; meanwhile, the suspended attaching base is beneficial to discharging residual bait, excrement and the like, so that the deposition of organic matters in a sand bed and a culture pond is reduced, and the living environment of urechis unicinctus is improved; in addition, the quantity of water for circulating aquaculture is small, an environment-friendly temperature control means is adopted, and the pollution discharge is reduced while the temperature control cost is reduced.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. An indoor high-density circulating water overwintering device for young urechis unicinctus, which is characterized by comprising: the system comprises a plurality of culture ponds, a water collecting tank, a micro-filter, a balance pond, a biochemical treatment system, an oxygenation system, a water supplementing system and a temperature control system;
the culture pond, the water collecting tank, the micro-filter, the balance pond and the biochemical treatment system are sequentially connected, and the biochemical treatment system is connected with the culture pond; the oxygenation system is respectively connected with the culture pond and the biochemical treatment system, and the water supplementing pond and the temperature control system are connected with the balance pond;
every all be equipped with the adhesion base outrigger in the breed pond, be equipped with a plurality of layers of adhesion base on the adhesion base outrigger.
2. The indoor high-density circulating water overwintering device for urechis unicinctus, as claimed in claim 1, wherein an overflow pipe is connected between the culture pond and the water collection tank, and water in the culture pond flows to the water collection tank through the overflow pipe; and the upper end of the overflow pipe is 8-10 cm lower than the upper end of the culture pond.
3. The indoor high-density circulating water overwintering device for urechis unicinctus young urechis unicinctus, as claimed in claim 2, wherein the bottom of the water collecting tank is lower than the water outlet of the overflow pipe, the distance between the bottom of the water collecting tank and the water outlet of the overflow pipe is more than 40 cm, the water collecting tank is inclined downwards by 1-5 degrees towards the direction of the micro-filter, and the water collecting tank is covered with a glass fiber reinforced plastic grating or a cover plate.
4. The indoor high-density circulating water overwintering device for young urechis unicinctus as claimed in claim 1, wherein the adhesive base comprises a box body, a plurality of through holes are formed in the bottom of the box body, ropes with equal length are fixedly connected to four corners of the upper end and four corners of the lower end of the box body respectively, the ropes at the four corners of the upper end of the box body are connected with a hook together, the ropes at the four corners of the lower end of the box body are connected with a ring together, and the two adjacent layers of the adhesive bases and the uppermost layer of the adhesive base are connected with the adhesive base suspension bracket through the rings and the hooks; a first screen, a second screen and a sand layer are sequentially paved inside the box body from bottom to top.
5. The indoor high-density circulating water overwintering device for urechis unicinctus, as claimed in claim 4, wherein the first screen is an 80-mesh screen, the second screen is a 40-mesh screen, sand in the sand layer is sequentially treated by a 60-mesh screen and an 80-mesh screen, and the thickness of the sand layer is 4-5 cm.
6. The indoor high-density circulating water overwintering device for urechis unicinctus, as claimed in claim 1, wherein the row spacing between adjacent attachment bases is not less than 10 cm, the column spacing is not more than 5 cm, the layer spacing is more than 10 cm, and the distance between the attachment base at the bottommost layer and the bottom of the culture pond is more than 10 cm.
7. The indoor high-density circulating water overwintering device for young urechis unicinctus as claimed in claim 1, wherein the biochemical treatment system comprises a third water pump, a biological filter and an ultraviolet germicidal lamp; the third water pump is connected between the biochemical treatment system and the culture pond and is used for pumping the water treated by the biochemical treatment system into the culture pond; the biological filter is filled with K3 filter materials, wherein the filling rate of K3 filter materials in the biological filter is 25-40%.
8. The indoor high-density circulating water overwintering method for urechis unicinctus, as claimed in any one of claims 1 to 7, is characterized by comprising the following steps: seed putting, device temperature rising, overwintering management, device temperature reduction and young urechis unicinctus harvesting.
9. The indoor high-density circulating water overwintering method for urechis unicinctus young urechis unicinctus as claimed in claim 8, wherein in the process of putting the urechis unicinctus, the putting density of the urechis unicinctus is not more than 1000 bits/square meter.
10. The indoor high-density circulating water overwintering method for young urechis unicinctus, as claimed in claim 8, is characterized in that in the process of collecting and catching young urechis unicinctus, the breeding pond is thoroughly drained in batches, the drained water enters the balance pond, then the bottom of the breeding pond is flushed, and then the water in the balance pond is supplemented to the original water level through the biochemical treatment system.
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