CN114667958B - Artificial breeding facility and breeding method for Chinese tiger head crabs - Google Patents
Artificial breeding facility and breeding method for Chinese tiger head crabs Download PDFInfo
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- CN114667958B CN114667958B CN202210261811.1A CN202210261811A CN114667958B CN 114667958 B CN114667958 B CN 114667958B CN 202210261811 A CN202210261811 A CN 202210261811A CN 114667958 B CN114667958 B CN 114667958B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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
- A01K63/006—Accessories for aquaria or terraria
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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
- A01K63/047—Liquid pumps for aquaria
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/10—Cleaning bottoms or walls of ponds or receptacles
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses an artificial breeding facility and a breeding method for Chinese tiger head crabs, relates to the technical field of the breeding and proliferation of Chinese tiger head crabs, and solves the problems that excrement generated in the breeding and proliferation process of Chinese tiger head crabs is mixed with substrate generated in breeding, a breeding area is polluted, the removal is difficult, and the escape of the Chinese tiger head crabs is easily caused during water change, so that economic loss is caused. The artificial breeding facility and the artificial breeding method for the Chinese tiger head crabs comprise a breeding pond, wherein a breeding area is arranged inside the breeding pond, a feeding area is arranged on one side of the breeding area, a partition mechanism is arranged between the breeding area and the feeding area, and the partition mechanism comprises a partition bottom plate. According to the invention, the culture area of the Chinese tiger head crabs can be rapidly cleaned by arranging the drainage slag removal mechanism, the partition mechanism and the seedling culture area cleaning mechanism, so that the cleanness of a culture water body is ensured, and the economic loss caused by the escape of the Chinese tiger head crabs is avoided during water change.
Description
Technical Field
The invention relates to the field of cultivating of Chinese tiger head crabs, in particular to an artificial breeding facility and a breeding method for Chinese tiger head crabs.
Background
With the rapid development of social economy, the Chinese tiger head crab is a crustacean of the tiger head crab family and the tiger head crab genus; the shape is peculiar, the color is bright, the head and the chest are round, and the granular bulges are particularly remarkable at the front part and the middle part; the gill areas are respectively provided with a dark purple round spot, such as a tiger eye shape; the forehead part is narrow, 3 sharp teeth are arranged, the middle part is larger, and the protruding length is slightly larger than the width; the zones are obvious, and the warty-shaped bulges are symmetrically distributed at the centers of the zones; the forehead is provided with 3 sharp teeth, the middle part is larger, the front side edge is provided with 2 wart-shaped bulges and one strong thorn, the rear side edge is provided with two strong thorns, and the rear edge is round and blunt; the chela is asymmetric, and the left part is large and the right part is small; the 4 th pair of feet are paddle-shaped, and the knuckle is flat and oval; the male abdomen is short and small and is triangular, and the female is oval.
However, the excrement generated in the existing China tiger head crabs in the breeding process can be mixed with the substrate generated by seedling raising, the breeding area is polluted and difficult to remove, and the China tiger head crabs escape easily when water is changed, so that economic loss is caused; therefore, the existing requirements are not met, and an artificial breeding facility and a breeding method for the Chinese tiger head crabs are provided for the artificial breeding facility.
Disclosure of Invention
The invention aims to provide an artificial breeding facility and a breeding method for Chinese tiger head crabs, and aims to solve the problems that the excrement generated in the breeding process of the existing Chinese tiger head crabs in the background art is mixed with the substrate used for breeding, the breeding area is polluted, the removal is difficult, and the escape of the Chinese tiger head crabs is easily caused during water change, so that economic loss is caused, and the like.
In order to achieve the purpose, the invention provides the following technical scheme: an artificial breeding facility for Chinese tiger head crabs comprises a breeding pond, wherein a breeding area is arranged in the breeding pond, an eating area is arranged on one side of the breeding area, a partition mechanism is arranged between the breeding area and the eating area, the partition mechanism comprises a partition bottom plate, a containing groove is formed in the surface of the partition bottom plate, a lifting partition plate is movably arranged on the inner side of the containing groove, connecting rods are arranged on the upper surfaces of two ends of the lifting partition plate, an adjusting sleeve is arranged on one side of each connecting rod, the bottom end of the adjusting sleeve is inserted into the breeding pond in an inserting mode from the upper surface of the breeding pond, a lifting ring is arranged at the bottom end of the adjusting sleeve, an adjusting screw rod penetrates through the middle of the lifting ring, the bottom end of the adjusting screw rod is inserted into the breeding pond, a screw gear is arranged on the outer surface of the bottom end of the adjusting screw rod, an adjusting gear meshed with the screw rod is arranged on one side of the screw rod gear, and an adjusting motor is arranged below the adjusting gear;
the feeding area is internally provided with a drainage slag removal mechanism, the drainage slag removal mechanism comprises a bottom plate, two symmetrically distributed guide strips are arranged on the surface of the bottom plate, an electromagnet is arranged inside the bottom plate, a permanent magnet is movably arranged above the electromagnet, a lifting strip-shaped plate is arranged above the permanent magnet, elastic air bags are embedded and arranged on two sides of the lifting strip-shaped plate, a blocking spring is arranged between the bottom surface of the lifting strip-shaped plate and the inside of the bottom plate, the lifting strip-shaped plate is movably clamped inside the bottom plate, a drainage groove is arranged between two sides of the lifting strip-shaped plate and the bottom plate, a communication water tank is arranged below the drainage groove and penetrates through the bottom end of the seedling raising pond;
the seedling raising device comprises a seedling raising pool, and is characterized in that two symmetrical guide sliding chutes are formed in the upper surface of the seedling raising pool, a seedling raising area cleaning mechanism is arranged above the seedling raising area, the seedling raising area cleaning mechanism comprises a supporting top plate, a lifting plate is arranged below the supporting top plate, a telescopic connecting rod is arranged between the lifting plate and the supporting top plate, an electric telescopic rod is arranged inside the supporting top plate, a sliding base is arranged at one end of the electric telescopic rod, a rolling roller is movably arranged in the middle of the sliding base, a rolling rope is wound outside the rolling roller, one end of the rolling rope is fixed on the outer surface of the rolling roller, the other end of the rolling rope penetrates through the bottom surface of the supporting top plate and is connected with the surface of the lifting plate, a driving rotating shaft penetrates through the middle of the rolling roller, one end of the driving rotating shaft penetrates through the sliding base, and the end of the driving rotating shaft is provided with a rolling motor;
a water pumping pipe is arranged above the supporting top plate, the bottom end of the water pumping pipe penetrates through the supporting top plate and a lifting plate located below the supporting top plate, an absorption plate is arranged at the end part of the bottom end of the water pumping pipe, an air outlet plate is arranged below the lifting plate, an air flow guide strip is arranged on the inner side of the air outlet plate, an air blowing pipe is arranged on the surface of the air outlet plate, the upper end of the air blowing pipe penetrates through the lifting plate to be connected with an external air pump, supporting rods are arranged below two ends of the supporting top plate, the top ends of the supporting rods are attached to the bottom surface of the supporting top plate, flat connecting steel sheets are arranged on the outer sides of the supporting rods, L-shaped connecting steel sheets are arranged on the inner sides of the supporting rods, and the supporting rods are connected with the supporting top plate through the flat connecting steel sheets and the L-shaped connecting steel sheets;
the bottom of the supporting rod is inserted into the inner side of the guide sliding groove, the end part of the supporting rod penetrates through the guide screw rod, two ends of the guide screw rod are inserted into the seedling raising pool, a synchronous worm wheel is arranged on the outer surface of one end of the guide screw rod, a driving worm meshed with the synchronous worm wheel is arranged below the synchronous worm wheel, a worm gear is arranged on the outer surface of the middle of the driving worm, a guide gear meshed with the worm gear is arranged below the worm gear, and a guide motor is arranged at one end of the guide gear.
Preferably, the outer side of the electromagnet is coated with a waterproof sleeve, and the waterproof sleeve is subjected to waterproof treatment.
Preferably, the outer surface of the guide screw and the inner side surface of the bottom end of the support rod penetrated by the guide screw are provided with threads with the same rotating direction, the guide screw and the support rod are in thread transmission, the inner surface of the lifting ring is provided with threads with the same rotating direction as the outer surface of the adjusting screw, and the lifting ring and the adjusting screw are in thread transmission.
Preferably, the top of adjusting sleeve and connecting rod all is provided with the connection piece, the both ends of connection piece respectively with the top terminal surface laminating of adjusting sleeve and connecting rod and all pass through bolted connection with adjusting sleeve and connecting rod.
Preferably, the upper surfaces of the two ends of the air outlet plate are provided with connecting ropes, and the two ends of the connecting ropes are fixedly connected with the bottom surface of the lifting plate.
Preferably, a certain height difference exists between the gas outlet plate and the absorption plate, and the height difference is larger than the height size of the cultured parent crabs.
Preferably, sliding base's bottom surface is provided with the bar groove that runs through, the below in bar groove is provided with the guide ring, the bottom of book receipts rope passes from the centre of guide ring.
Compared with the prior art, the seedling raising device has the beneficial effects that: the lifter plate that the start roll-up motor will be suspended in midair by the roll-up rope reduces downwards and guarantees the bottom surface of air outlet plate and the surface laminating of substrate, then start the air pump that the gas blow union coupling and the suction pump that the suction pipe is connected, blow up excrement and impurity that will be located the substrate surface through the air pump to the inside gas transmission of air outlet plate and simultaneously the suction pump will be blown up excrement and impurity through suction pipe and absorbed plate and take out to the external world, two leading screw of direction motor drive rotate simultaneously, and make the bracing piece drive supporting roof remove along direction spout direction, make and draw air plate and absorbed plate and slide in the district of growing seedlings inside, the substrate of laying in the district of growing seedlings that can be comprehensive cleans, avoid bacterial growing.
A seedling raising method of an artificial seedling raising facility for Chinese tiger head crabs comprises the following steps:
(A) After the nursery pond is built, bricks are used for piling up a partition bottom plate in the nursery pond, then a lifting partition plate is inserted into the inner side of a containing groove in the surface of the partition bottom plate, the area in the nursery pond is divided into a nursery area and a feeding area, then a substrate required by cultivation is laid in the partitioned nursery area, the substrate is natural sea area fine sand (the cultivation fine sand for cultivating parent crabs needs to be overturned and washed by sand-filtered seawater for 3-5 times, daphnia-shaped larvae of larvae are divided into three stages (Z1-Z3), the cultivation fine sand is laid when the larvae are transformed into megalops larvae for 2 days, the cultivation fine sand needs to be filtered by a 40-mesh screen and then washed by the sand-filtered seawater for 6-8 times), seawater is added into the nursery pond after the substrate is laid, and the salinity of the seawater is ensured to be between 25-27;
(B) Finally, putting parent crabs or larvae to be cultivated on the surface of a substrate laid by the 02, wherein the breeding density of the parent crabs is preferably 2-3 per square meter, the illumination intensity is 500 Lux-1000 Lux, the water temperature is 16-28 ℃, the water depth is 0.8-1.0 m, continuous micro-charging and night bait casting are carried out, the bait mainly comprises low-value fresh and live shellfish and is supplemented with miscellaneous fishes and shrimps; the feeding amount is 5 to 10 percent of the weight of the parent crabs, the feeding amount is properly adjusted according to the ingestion condition, the water is changed for 1 time every day, the water changing amount is 80 to 100 percent, the dirt and the residual bait at the bottom of the pool are cleaned before the water is added, and the injured and dead parent crabs are picked out;
(C) The larva cultivation density is 15000-20000 per cubic meter, and for a cultivation pool with large larva density, the cultivation density can be reduced by siphoning; or stopping aeration for min-min, utilizing the phototaxis of the larva, collecting the larva at the upper layer by using a bolting silk mesh bag, putting the larva into other larva culture ponds, and preferably culturing the larva incubated at the same period in one culture pond, wherein the water temperature is kept to be 21-28 ℃, the salinity is 25-27, the pH value is 7.8-8.2, the dissolved oxygen is more than or equal to 5mg/L, the ammonia nitrogen is less than or equal to 0.1mg/L, the hydrogen sulfide is less than or equal to 0.1mg/L, water is changed once a day, the stomach fullness, the vitality, the body surface dirt hanging condition, the residual bait amount and the like of the larva are observed for at least 3 times every day, and corresponding measures are taken in time when problems occur;
(D) When the substrate filled in the seedling raising area is cleaned, firstly, the larval is sucked to the seedling raising area (3) by utilizing the larval phototaxis in the daphnia larval stage, the larval is moved to the seedling raising area (3) by using a bolting silk net bag with 40-80 meshes in the later period of the larval, and the seedling raising area (3) and the seedling raising area (2) are separated, so that the larval is prevented from being damaged when the substrate is cleaned. Switching on power supplies of an electric telescopic rod (617) and a furling motor (622), wherein the furling motor (622) is started and drives a driving rotating shaft (620) to rotate, so that the driving rotating shaft (620) drives a furling roller (619) to rotate, a furling rope (621) furled by the furling roller (619) is slack, a lifting plate (614) originally suspended by the furling rope (621) is downwards placed, meanwhile, the electric telescopic rod (617) drives a sliding base (618) to move, the furling rope (621) is always located at the same position when loosened, the inclination or the movement cannot occur until an air outlet plate (611) is in contact with the surface of a substrate, and the furling motor (622) and the electric telescopic rod (617) are stopped to be started;
(E) Then starting an air pump connected with an air blowing pipe and a water suction pump connected with a water suction pipe, wherein the air pump conveys air flow into an air outlet plate through the air blowing pipe, so that the air flow is obliquely blown onto the surface of the substrate after being guided by an air flow guide strip, excrement or other impurities on the surface of the substrate are blown, and meanwhile, the water suction pump sucks the excrement and the impurities blown up by the air flow blown from the air outlet plate into the water suction pipe through an absorption plate and discharges the excrement and the impurities to the outside;
(F) When excrement and impurities on the surface of the substrate are cleaned, the guide motor can be started simultaneously, the guide motor drives the guide gear and the worm gear to rotate so that the drive worm drives the two synchronous worm gears to rotate, the guide screw rotates around the axis of the synchronous worm gears, the support rods move along the guide sliding grooves through the thread transmission between the guide screw and the support rods, the two support rods drive the support top plate and the lifting plate to integrally move, the air outlet plate is attached to the surface of the substrate to move, and all the surfaces of the substrate in the seedling growing area are cleaned;
(G) When the seawater in the nursery pond needs to be replaced, a bolting silk net bag of 40-80 meshes is adopted to connect the larva according to the size of the larva, the power supply of an adjusting motor is switched on and started, the adjusting motor drives an adjusting gear and a screw gear to rotate to drive an adjusting screw to synchronously rotate, the adjusting screw drives the adjusting screw to synchronously rotate through screw transmission with a lifting ring, the lifting ring moves upwards along the axis of the adjusting screw, the lifting ring drives an adjusting sleeve to extend out of the nursery pond, the adjusting sleeve drives a connecting rod and a lifting partition plate to synchronously move, the lifting partition plate extends out of a partition bottom plate, a partition is formed between the nursery pond and a feeding area, the height of the partition is far larger than that of a tiger crab seedling, and the larva in the middle of the nursery pond is prevented from entering the feeding area when water is replaced;
(H) After the lift baffle rises, the power of switch-on electro-magnet, make the electro-magnet carry out magnetic adsorption to the permanent magnet, make the permanent magnet downstream be close to the electro-magnet, and make the permanent magnet drive lift bar shaped plate and contract to the bottom plate is inside, make the upper end opening of the water drainage tank that is originally blockked up by lift bar shaped plate open, the sea water that is located this moment and educates pond inside can outwards be discharged along water drainage tank and the intercommunication basin after opening, and make rivers flow in the surface slope of water conservancy diversion strip through two water conservancy diversion strips that are located the bottom plate surface, can be washd food waste and the larva excrement that are located water conservancy diversion strip surface, guarantee that feed district inside cleans when changing water.
Preferably, the area of the seedling raising area occupies four fifths of the area of the seedling raising pool, and the area of the feeding area occupies one fifth of the area of the seedling raising pool.
Preferably, the thickness of the substrate is 10 cm-15 cm, and the height of the partition bottom plate is larger than 15cm.
Compared with the prior art, the seedling raising method has the beneficial effects that:
according to the invention, the breeding area is divided into two areas which cannot be used as a seedling raising area and a feeding area during breeding, so that residues generated during feeding and a large amount of excrement generated by excretion of seedlings in the feeding process are kept in the feeding area, the residues and the excrement cannot be mixed with the substrate laid in the seedling raising area, the cleaning is convenient, the substrate cannot be greatly lost during cleaning, and meanwhile, the seedlings cannot escape along with water flow during water changing.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a schematic structural view of a seedling raising area cleaning mechanism of the present invention;
FIG. 3 is a schematic structural diagram of the partition mechanism of the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 3 at A according to the present invention;
FIG. 5 is a schematic structural view of a drainage slag removal mechanism of the present invention;
FIG. 6 is a schematic view of a partial structure of the cleaning mechanism for the seedling raising area of the present invention;
FIG. 7 is a schematic view of a partial structure of the top support plate of the present invention;
fig. 8 is an enlarged view of the structure of fig. 7 at B according to the present invention.
In the figure: 1. a seedling raising pond; 2. a seedling raising area; 3. a feeding area; 4. a water and slag discharging mechanism; 401. a base plate; 402. a flow guide strip; 403. lifting the strip-shaped plate; 404. an elastic air bag; 405. a permanent magnet; 406. an electromagnet; 407. a water discharge tank; 408. the water tank is communicated; 409. a blocking spring; 410. a waterproof jacket; 5. a partition mechanism; 501. a partition bottom plate; 502. a storage groove; 503. a lifting clapboard; 504. a connecting rod; 505. adjusting the sleeve; 506. adjusting the screw rod; 507. a lifting ring; 508. a screw gear; 509. an adjusting gear; 510. adjusting the motor; 6. a seedling raising area cleaning mechanism; 601. a guide motor; 602. a guide gear; 603. a worm gear; 604. driving the worm; 605. a synchronous worm gear; 606. a lead screw; 607. a support bar; 608. supporting a top plate; 609. a water pumping pipe; 610. an absorbent sheet; 611. a gas outlet plate; 612. an air blowing pipe; 613. connecting ropes; 614. a lifting plate; 615. an airflow guide strip; 616. a telescopic connecting rod; 617. an electric telescopic rod; 618. a sliding base; 619. rolling up the roller; 620. driving the rotating shaft; 621. winding the rope; 622. a winding motor; 623. a guide ring; 7. a guide chute; 8. an L-shaped connecting steel sheet; 9. the steel sheets are connected straightly.
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.
The adjustment motor 510 (model number ncv 28-400-60C), the steering motor 601 (model number 130 ST-M15025) and the take-up motor 622 (model number 5IK60 RGN-CF) referred to in the present invention are commercially available or custom made.
Referring to fig. 1 to 8, an embodiment of the present invention is shown: an artificial breeding facility for Chinese tiger head crabs comprises a breeding pond 1, wherein a breeding area 2 is arranged in the breeding pond 1, an eating area 3 is arranged on one side of the breeding area 2, a partition mechanism 5 is arranged between the breeding area 2 and the eating area 3, the partition mechanism 5 comprises a partition bottom plate 501, a storage groove 502 is arranged on the surface of the partition bottom plate 501, a lifting partition plate 503 is movably arranged on the inner side of the storage groove 502, connecting rods 504 are arranged on the upper surfaces of the two ends of the lifting partition plate 503, an adjusting sleeve 505 is arranged on one side of each connecting rod 504, the bottom end of the adjusting sleeve 505 is inserted into the breeding pond 1 from the upper surface of the breeding pond 1 in an inserting mode, a lifting ring 507 is arranged at the bottom end of the lifting ring 507, an adjusting screw 506 penetrates through the middle of the lifting ring 507, the bottom end of the adjusting screw 506 is inserted into the breeding pond 1 in an inserting mode, a screw gear 508 is arranged on the outer surface of the bottom end of the breeding pond 1, an adjusting gear 509 meshed with the adjusting gear is arranged below the adjusting motor 510;
a water drainage and slag removal mechanism 4 is arranged in the feeding area 3, the water drainage and slag removal mechanism 4 comprises a bottom plate 401, two symmetrically distributed guide strips 402 are arranged on the surface of the bottom plate 401, an electromagnet 406 is arranged in the bottom plate 401, a permanent magnet 405 is movably arranged above the electromagnet 406, a lifting strip-shaped plate 403 is arranged above the permanent magnet 405, elastic air bags 404 are embedded on two sides of the lifting strip-shaped plate 403, a blocking spring 409 is arranged between the bottom surface of the lifting strip-shaped plate 403 and the inside of the bottom plate 401, the lifting strip-shaped plate 403 is movably clamped in the bottom plate 401, water drainage grooves 407 are formed in two sides of the lifting strip-shaped plate 403 and the middle of the bottom plate 401, a communication water tank 408 is arranged below the water drainage grooves 407, and the communication water tank 408 penetrates through the bottom end of the seedling raising pond 1;
the upper surface of the seedling raising pool 1 is provided with two symmetrical guide sliding chutes 7, a seedling raising area cleaning mechanism 6 is arranged above the seedling raising area 2, the seedling raising area cleaning mechanism 6 comprises a supporting top plate 608, a lifting plate 614 is arranged below the supporting top plate 608, a telescopic connecting rod 616 is arranged between the lifting plate 614 and the supporting top plate 608, an electric telescopic rod 617 is arranged inside the supporting top plate 608, one end of the electric telescopic rod 617 is provided with a sliding base 618, the middle of the sliding base 618 is movably provided with a furling roller 619, the outer side of the furling roller 619 is wound with a furling rope 621, one end of the furling rope 621 is fixed on the outer surface of the furling roller 619, the other end of the furling rope 621 penetrates through the bottom surface of the supporting top plate 608 and is connected with the surface of the lifting plate 614, a driving rotating shaft 620 penetrates through the middle of the furling roller 619, one end of the driving rotating shaft 620 penetrates through the sliding base 618, and the end of the driving rotating shaft 622 is provided with a furling motor 622;
a water pumping pipe 609 is arranged above the supporting top plate 608, the bottom end of the water pumping pipe 609 penetrates through the supporting top plate 608 and a lifting plate 614 which is positioned below the supporting top plate 608, an absorption plate 610 is arranged at the bottom end of the water pumping pipe 609, an air outlet plate 611 is arranged below the lifting plate 614, an air flow guide strip 615 is arranged on the inner side of the air outlet plate 611, an air blowing pipe 612 is arranged on the surface of the air outlet plate 611, the upper end of the air blowing pipe 612 penetrates through the lifting plate 614 to be connected with an external air pump, supporting rods 607 are arranged below two ends of the supporting top plate 608, the top ends of the supporting rods 607 are attached to the bottom surface of the supporting top plate 608, flat connecting steel sheets 9 are arranged on the outer sides of the supporting rods 607, L-shaped connecting steel sheets 8 are arranged on the inner sides of the supporting rods 607, and the supporting top plate 608 are connected with the L-shaped connecting steel sheets 8 through the flat connecting steel sheets 9;
the bottom end of the support rod 607 is inserted into the guide chute 7, the end part of the support rod is provided with a guide screw 606 in a penetrating manner, the two ends of the guide screw 606 are inserted into the nursery pond 1, the outer surface of one end of the guide screw is provided with a synchronous worm wheel 605, the lower part of the synchronous worm wheel 605 is provided with a driving worm 604 meshed with the synchronous worm wheel, the outer surface of the middle part of the driving worm 604 is provided with a worm gear 603, the lower part of the worm gear 603 is provided with a guide gear 602 meshed with the worm gear, and one end of the guide gear 602 is provided with a guide motor 601.
Further, the outside cladding of electro-magnet 406 has waterproof cover 410, and waterproof cover 410 is through water repellent treatment, can guarantee that the inside rivers that permeate into bottom plate 401 can not contact with electro-magnet 406, avoids electro-magnet 406 to appear the short circuit and damage.
Further, the outer surface of the guide screw 606 and the inner surface of the bottom end of the support rod 607 penetrated by the guide screw 606 are both provided with threads with the same turning direction, the guide screw 606 and the support rod 607 are in thread transmission, the inner surface of the lifting ring 507 is provided with threads with the same turning direction as the outer surface of the adjusting screw 506, the lifting ring 507 and the adjusting screw 506 are in thread transmission, and the thread transmission enables the lifting ring 507 and the support rod 607 to be driven to move along the axes of the adjusting screw 506 and the guide screw 606 respectively when the adjusting screw 506 and the guide screw 606 rotate.
Further, the top of adjusting sleeve 505 and connecting rod 504 all is provided with the connection piece, the both ends of connection piece respectively with the top end face laminating of adjusting sleeve 505 and connecting rod 504 and all pass through bolted connection with adjusting sleeve 505 and connecting rod 504, the connection piece makes adjusting sleeve 505 and connecting rod 504 can carry out synchronous motion, and guarantees that adjusting screw 506 lifting ring 507 can only drive adjusting sleeve 505 and reciprocate when rotatory, and lifting ring 507 and adjusting sleeve 505 can not rotate.
Furthermore, the upper surfaces of the two ends of the air outlet plate 611 are provided with connecting ropes 613, the two ends of the connecting ropes 613 are fixedly connected with the bottom surface of the lifting plate 614, and the connecting ropes 613 suspend and support the air outlet plate 611, so that the air outlet plate 611 is prevented from falling off and the bearing pressure of the air blowing pipe 612 is reduced.
Further, a certain height difference exists between the air outlet plate 611 and the absorption plate 610, and the height difference is larger than the height size of the cultured parent crabs, so that the absorption plate 610 cannot damage cultured crab bodies in the process of cleaning the substrate.
Further, the bottom surface of sliding base 618 is provided with the strip groove that runs through, and the below in strip groove is provided with guide ring 623, and the bottom of roll-up rope 621 passes from the centre of guide ring 623, guarantees that roll-up rope 621 and is being released and sliding base 618 and along with the in-process that electric telescopic handle 617 removed roll-up rope 621 and keep perpendicular downwards and be located same position all the time.
A seedling raising method of an artificial seedling raising facility for Eriocheir sinensis comprises the following steps:
(A) After the nursery pond 1 is built, bricks are used for piling up a partition bottom plate 501 in the nursery pond 1, then lifting partition plates 503 are inserted into the inner sides of accommodating grooves 502 on the surface of the partition bottom plate 501, the area in the nursery pond 1 is divided into a nursery area 2 and a feeding area 3, then a substrate required for cultivation is laid in the area of the partitioned nursery area 2, the substrate is natural sea area fine sand (the cultivation fine sand of the cultivation parent crab needs to be overturned and washed by sand-filtered seawater for 3-5 times, the larval < daphnia larva is divided into three stages (Z1-Z3), the cultivation fine sand starts to be laid when the larval is 2 days, the cultivation fine sand needs to be filtered by a 40-mesh screen and then washed by sand-filtered seawater for 6-8 times), seawater is added into the nursery pond 1 after the laying of the substrate is finished, and the salinity of the seawater is ensured to be between 25 and 27;
(B) Finally, putting parent crabs or larvae to be cultured on the surface of a substrate laid in the breeding area 2, wherein the breeding density of the parent crabs is preferably 2-3 per square meter, the illumination intensity is 500 Lux-1000 Lux, the water temperature is 16-28 ℃, the water depth is 0.8-1.0 m, continuous micro-aeration is carried out, bait is thrown at night, the bait is mainly low-value fresh and alive shellfish, and the auxiliary materials are mixed fishes and shrimps; the feeding amount is 5 to 10 percent of the weight of the parent crabs, the feeding amount is properly adjusted according to the ingestion condition, the water is changed for 1 time every day, the water changing amount is 80 to 100 percent, the dirt and the residual bait at the bottom of the pond are cleaned before the water is added, and injured and dead parent crabs are picked out;
(C) The larva cultivation density is 15000-20000 per cubic meter, and the cultivation density can be reduced by siphoning for the cultivation pool with large larva density; or stopping aeration for 3-5 min, utilizing phototaxis of the larva, collecting the upper layer larva by using a bolting silk mesh bag, putting the larva into other larva cultivating ponds, and cultivating the larva which is hatched at the same period in one cultivating pond, wherein the temperature of water is kept to be 21-28 ℃, the salinity is 25-27, the pH value is 7.8-8.2, the dissolved oxygen is more than or equal to 5mg/L, the ammonia nitrogen is less than or equal to 0.1mg/L, the hydrogen sulfide is less than or equal to 0.1mg/L, water is changed once a day, the gastrointestinal fullness, the vitality, the body surface dirty hanging condition, the residual bait amount and the like of the larva are observed for at least 3 times every day, and corresponding measures are taken in time when problems occur;
(D) When cleaning the substrate filled in the seedling raising area 2, firstly, the larval is attracted to the seedling raising area (3) by utilizing the larval phototaxis in the daphnia-shaped larval period, the larval is moved to the seedling raising area (3) by using a bolting silk net bag with 40-80 meshes in the later period of the larval, and the seedling raising area (3) and the seedling raising area (2) are separated so as to avoid damaging the larval when cleaning the substrate; the power supply of the electric telescopic rod 617 and the furling motor 622 is connected, at this time, the furling motor 622 is started and drives the driving rotating shaft 620 to rotate, so that the driving rotating shaft 620 drives the furling roller 619 to rotate, the furling rope 621 furled by the furling roller 619 is loosened, the lifting plate 614 originally suspended by the furling rope 621 is lowered downwards, meanwhile, the electric telescopic rod 617 drives the sliding base 618 to move, the furling rope 621 is always located at the same position when loosened, the inclination or the movement cannot occur until the air outlet plate 611 is in contact with the surface of the substrate, and at this time, the furling motor 622 and the electric telescopic rod 617 are stopped to be started;
(E) E, starting an air pump connected with the air blowing pipe 612 and a water pump connected with the water pumping pipe 609, wherein the air pump conveys air flow into the air outlet plate 611 through the air blowing pipe 612, so that the air flow is obliquely blown on the surface of the substrate after being guided by the air flow guide strip 615, and the excrement or other impurities on the surface of the substrate are blown, and meanwhile, the water pump sucks the excrement and the impurities blown up by the air flow blown out of the air outlet plate 611 into the water pumping pipe 609 through the absorption plate 610 and discharges the excrement and the impurities to the outside;
(F) When excrement and impurities on the surface of the substrate are cleaned, the guide motor 601 can be started simultaneously, the guide motor 601 drives the guide gear 602 and the worm gear 603 to rotate so that the driving worm 604 drives the two synchronous worm wheels 605 to rotate, the guide screw 606 rotates around the axis of the synchronous worm wheels 605, the support rod 607 moves along the guide chute 7 through the thread transmission between the guide screw 606 and the support rod 607, the two support rods 607 drive the support top plate 608 and the lifting plate 614 to integrally move, the air outlet plate 611 moves along the surface of the substrate, and all the surfaces of the substrate in the seedling raising area 2 are cleaned;
(G) When the seawater in the nursery pond 1 needs to be replaced, firstly, the larvae are connected by a bolting silk tuck net of 40-80 meshes according to the size of the larvae, the power supply of an adjusting motor 510 is switched on and started, the adjusting motor 510 drives an adjusting gear 509 and a screw gear 508 to rotate to drive an adjusting screw 506 to synchronously rotate, at the moment, the adjusting screw 506 drives the lifting ring 507 to upwards move along the axis of the adjusting screw 506 through screw transmission with the lifting ring 507, the lifting ring 507 drives an adjusting sleeve 505 to extend out of the nursery pond 1, the adjusting sleeve 505 drives a connecting rod 504 and a lifting partition 503 to synchronously move, the lifting partition 503 extends out of a partition bottom plate 501, a partition is formed between the nursery region 2 and a feeding region 3, the height of the partition is far greater than that of the tiger crab larvae, and the larvae in the nursery region 2 are prevented from entering the feeding region 3 when water is replaced;
(H) After the lifting partition 503 is lifted, the power supply of the electromagnet 406 is switched on, the electromagnet 406 performs magnetic adsorption on the permanent magnet 405, the permanent magnet 405 moves downwards to be close to the electromagnet 406, the permanent magnet 405 drives the lifting strip-shaped plate 403 to contract towards the inside of the bottom plate 401, the upper end opening of the drainage groove 407 originally blocked by the lifting strip-shaped plate 403 is opened, the seawater in the nursery pond 1 can be discharged outwards along the opened drainage groove 407 and the communicated water groove 408, the water flows obliquely on the surface of the diversion strip 402 through the two diversion strips 402 on the surface of the bottom plate 401, food residues and larva excretions on the surface of the diversion strip 402 can be washed away, and the inside of the eating area 3 is ensured to be cleaned while water is changed.
Further, the regional area in district 2 of growing seedlings occupies nursery pond 1 four fifths, and the regional area in feed district 3 occupies nursery pond 1 one fifth, and four are than the area ratio of one, can distinguish each other growing seedlings and feed, and conveniently trade water to nursery pond 1 inside through feed district 3.
Furthermore, the thickness of the substrate is 10 cm-15 cm, and the height of the partition bottom plate 501 is larger than 15cm, so that the partition bottom plate 501 can block the substrate when water is changed, and the substrate is prevented from flowing along with water flow when water is changed, and the substrate is prevented from being lost greatly.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a chinese tiger head crab artificial breeding facility, includes nursery pond (1), its characterized in that: a seedling raising area (2) is arranged in the seedling raising pool (1), an eating area (3) is arranged on one side of the seedling raising area (2), a partition mechanism (5) is arranged between the seedling raising area (2) and the eating area (3), the partition mechanism (5) comprises a partition bottom plate (501), a storage groove (502) is formed in the surface of the partition bottom plate (501), a lifting partition plate (503) is movably arranged on the inner side of the storage groove (502), connecting rods (504) are arranged on the upper surfaces of the two ends of the lifting partition plate (503), an adjusting sleeve (505) is arranged on one side of each connecting rod (504), the bottom end of each adjusting sleeve (505) is inserted into the seedling raising pool (1) from the upper surface of the seedling raising pool (1) and provided with a lifting ring (507), an adjusting screw (506) penetrates through the middle of the lifting ring (507), the bottom end of each adjusting screw (506) is inserted into the seedling raising pool (1) and provided with a screw gear (508), an adjusting gear (509) meshed with the screw gear (509) is arranged on one side of the screw gear (508), and an adjusting gear (510) is arranged below the adjusting gear (509);
the inside of the feeding area (3) is provided with a drainage slag removal mechanism (4), the drainage slag removal mechanism (4) comprises a bottom plate (401), the surface of the bottom plate (401) is provided with two symmetrically distributed guide strips (402), the inside of the bottom plate (401) is provided with an electromagnet (406), a permanent magnet (405) is movably arranged above the electromagnet (406), a lifting strip-shaped plate (403) is arranged above the permanent magnet (405), both sides of the lifting strip-shaped plate (403) are respectively provided with an elastic air bag (404) in an embedded manner, a blocking spring (409) is arranged between the bottom surface of the lifting strip-shaped plate (403) and the inside of the bottom plate (401), the lifting strip-shaped plate (403) is movably clamped inside the bottom plate (401), a drainage groove (407) is arranged between both sides of the lifting strip-shaped plate (403) and the bottom plate (401), a communication water tank (408) is arranged below the drainage groove (407), and the communication water tank (408) penetrates through the bottom end of the seedling raising pond (1);
the seedling raising device comprises a seedling raising pool (1), and is characterized in that two symmetrical guide sliding chutes (7) are arranged on the upper surface of the seedling raising pool (1), a seedling raising area cleaning mechanism (6) is arranged above a seedling raising area (2), the seedling raising area cleaning mechanism (6) comprises a supporting top plate (608), a lifting plate (614) is arranged below the supporting top plate (608), a telescopic connecting rod (616) is arranged between the lifting plate (614) and the supporting top plate (608), an electric telescopic rod (617) is arranged inside the supporting top plate (608), a sliding base (618) is arranged at one end of the electric telescopic rod (617), a winding roller (619) is movably arranged in the middle of the sliding base (618), a winding rope (621) is wound outside the winding roller (619), one end of the winding rope (621) is fixed on the outer surface of the winding roller (619), the other end of the winding rope penetrates through the bottom surface of the supporting top plate (608) and is connected with the surface of the lifting plate (614), a driving rotating shaft (620) penetrates through the middle of the winding roller (619), one end of the driving rotating shaft (620) penetrates through the sliding base (618), and a winding motor (622) is arranged at the end of the supporting base (618);
a water pumping pipe (609) is arranged above the supporting top plate (608), the bottom end of the water pumping pipe (609) penetrates through the supporting top plate (608) and a lifting plate (614) located below the supporting top plate (608), an absorption plate (610) is arranged at the bottom end of the water pumping pipe (609), an air outlet plate (611) is arranged below the lifting plate (614), an air flow guide strip (615) is arranged on the inner side of the air outlet plate (611), an air blowing pipe (612) is arranged on the surface of the air outlet plate (611), the upper end of the air blowing pipe (612) penetrates through the lifting plate (614) and is connected with an external air pump, supporting rods (607) are arranged below the two ends of the supporting top plate (608), the top ends of the supporting rods (607) are attached to the bottom surface of the supporting top plate (608), a flat connecting steel sheet (9) is arranged on the outer side of the supporting rods (607), an L-shaped connecting steel sheet (8) is arranged on the inner side of the supporting rods (607), and the supporting top plate (608) is connected with the L-shaped connecting steel sheet (8) through the flat connecting steel sheet (9);
the bottom end of the supporting rod (607) is inserted into the inner side of the guide sliding groove (7), the end part of the supporting rod is provided with a guide screw rod (606) in a penetrating mode, two ends of the guide screw rod (606) are inserted into the seedling raising pool (1), the outer surface of one end of the guide screw rod is provided with a synchronous worm wheel (605), a driving worm (604) meshed with the synchronous worm wheel is arranged below the synchronous worm wheel (605), a worm gear (603) is arranged on the outer surface of the middle of the driving worm (604), a guide gear (602) meshed with the worm gear is arranged below the worm gear (603), and one end of the guide gear (602) is provided with a guide motor (601).
2. The artificial breeding facility of Chinese tiger head crabs of claim 1, which is characterized in that: the outer side of the electromagnet (406) is coated with a waterproof sleeve (410), and the waterproof sleeve (410) is subjected to waterproof treatment.
3. The artificial breeding facility of Chinese tiger head crabs of claim 1, which is characterized in that: the outer surface of the guide screw (606) and the inner side surface of the bottom end of the support rod (607) penetrated by the guide screw (606) are provided with threads with the same turning direction, the guide screw (606) and the support rod (607) are in thread transmission, the inner surface of the lifting ring (507) is provided with threads with the same turning direction as the outer surface of the adjusting screw (506), and the lifting ring (507) and the adjusting screw (506) are in thread transmission.
4. The artificial breeding facility of the Chinese tiger head crabs according to claim 1, which is characterized in that: connecting pieces are arranged above the adjusting sleeve (505) and the connecting rod (504), and two ends of each connecting piece are respectively attached to the top end faces of the adjusting sleeve (505) and the connecting rod (504) and are connected with the adjusting sleeve (505) and the connecting rod (504) through screws.
5. The artificial breeding facility of Chinese tiger head crabs of claim 1, which is characterized in that: the upper surfaces of the two ends of the air outlet plate (611) are provided with connecting ropes (613), and the two ends of the connecting ropes (613) are fixedly connected with the bottom surface of the lifting plate (614).
6. The artificial breeding facility of the Chinese tiger head crabs according to claim 1, which is characterized in that: a certain height difference exists between the air outlet plate (611) and the absorption plate (610), and the height difference is larger than the height size of the cultured parent crabs.
7. The artificial breeding facility of Chinese tiger head crabs according to claim 2, which is characterized in that: the bottom surface of sliding base (618) is provided with the strip groove that runs through, the below in strip groove is provided with guide ring (623), the bottom of rolling up rope (621) passes from the centre of guide ring (623).
8. A breeding method of the artificial breeding facility of the Chinese tiger head crabs as claimed in any one of claims 1 to 7, which is characterized in that: the seedling raising method comprises the following steps:
(A) After the nursery pond (1) is built, bricks are used for piling up a partition bottom plate (501) in the nursery pond (1), then a lifting partition plate (503) is inserted into the inner side of a containing groove (502) on the surface of the partition bottom plate (501), the area in the nursery pond (1) is divided into a nursery area (2) and a feeding area (3), a substrate required for cultivation is laid in the divided nursery area (2), the substrate is natural sea area fine sand, the fine sand for cultivating parent crabs needs to be washed by sand-filtered seawater for 3-5 times, the larva cultivation fine sand is filtered by a 40-mesh screen and then washed by sand-filtered seawater for 6-8 times, the larva is divided into three stages (Z1-Z3), the larva is changed into large-eye larva 2d, the fine sand starts to be laid, seawater is added into the nursery pond (1) after the substrate is laid, and the salinity of the seawater is ensured to be between 25 and 27;
(B) Finally, putting parent crabs or larvae to be cultivated on the surface of a substrate laid in a breeding area (2), wherein the breeding density of the parent crabs is preferably 2-3 crabs per square meter, the illumination intensity is 500Lux to 1000Lux, the water temperature is 16-28 ℃, the water depth is 0.8m to 1.0m, continuous micro-inflation is carried out, bait is thrown at night, the bait is mainly low-value fresh and live shellfish, the foreign fishes and shrimps are supplemented, the feeding amount is 5-10% of the weight of the parent crabs, the feeding condition is properly adjusted according to the ingestion condition, water is changed for 1 time every day, the water amount is changed by 80-100%, dirt and residual bait at the bottom of the pool are cleaned before water is added, and injured and dead parent crabs are picked out;
(C) The larva cultivation density is 15000-20000 per cubic meter, and for a cultivation pool with large larva density, the cultivation density can be reduced by siphoning; stopping inflating for 3min to 5min, using phototaxis of the larva, collecting the larva at the upper layer by using a bolting silk mesh bag, putting the larva into other larva cultivation pools, and preferably cultivating the larva which is hatched at the same period in the same cultivation pool, wherein the water temperature is kept at 21-28 ℃, the salinity is 25-27, the pH value is 7.8-8.2, the dissolved oxygen is more than or equal to 5mg/L, the ammonia nitrogen is less than or equal to 0.1mg/L, the hydrogen sulfide is less than 0.1mg/L, changing water once daily, observing the stomach fullness, the vitality, the body surface dirt hanging condition and the residual bait amount of the larva for at least 3 times every day, and taking corresponding measures in time when a problem occurs;
(D) When a substrate filled in a seedling raising area (2) is cleaned, larvae are sucked to the seedling raising area (2) by utilizing the phototaxis of the larvae in the daphnia-shaped larva period, the larvae are moved to a feeding area (3) by using a bolting silk net pocket with 40-80 meshes in the later period of the larvae, the feeding area (3) and the seedling raising area (2) are separated to avoid damaging the larvae when the substrate is cleaned, a power supply of an electric telescopic rod (617) and a winding motor (622) is switched on, at the moment, the winding motor (622) is started and drives a driving rotating shaft (620) to rotate, so that the driving rotating shaft (620) drives a winding roller (619) to rotate, the winding rope (621) wound by the winding roller (619) is loosened, a lifting plate (614) suspended by the original winding rope (621) is moved towards the bottom, meanwhile, the electric telescopic rod (617) drives a sliding base (618) to move, and the winding rope (621) is enabled to be always located in the same position when being loosened, the inclination or the movement cannot occur until an air outlet plate (622) is contacted with the surface of the substrate, and the winding motor (611) is stopped at the moment;
(E) Then starting an air pump connected with an air blowing pipe (612) and a water pump connected with a water pumping pipe (609), wherein the air pump conveys air flow into an air outlet plate (611) through the air blowing pipe (612), so that the air flow is obliquely blown on the surface of the substrate after being guided by an air flow guide strip (615), excrement or other impurities on the surface of the substrate are blown, and meanwhile, the water pump sucks the excrement and the impurities blown up by the air flow blown out of the air outlet plate (611) into the water pumping pipe (609) through an absorption plate (610) and discharges the excrement and the impurities to the outside;
(F) When excrement and impurities on the surface of the substrate are cleaned, the guide motor (601) is started simultaneously, the guide motor (601) drives the guide gear (602) and the worm gear (603) to rotate, so that the drive worm (604) drives the two synchronous worm gears (605) to rotate, the guide screw (606) rotates around the axis of the synchronous worm gears (605), the support rod (607) moves along the guide sliding groove (7) through the thread transmission between the guide screw (606) and the support rod (607), the two support rods (607) drive the support top plate (608) and the lifting plate (614) to integrally move, the air outlet plate (611) is attached to the surface of the substrate to move, and all the surfaces of the substrate in the seedling raising area (2) are cleaned;
(G) When the seawater in the seedling raising pond (1) needs to be replaced, firstly, a power supply of an adjusting motor (510) is connected and started, the adjusting motor (510) drives an adjusting gear (509) and a screw gear (508) to rotate to drive an adjusting screw (506) to synchronously rotate, at the moment, the adjusting screw (506) drives the lifting ring (507) to upwards move along the axis of the adjusting screw (506) through screw transmission with a lifting ring (507), the lifting ring (507) drives an adjusting sleeve (505) to extend out of the seedling raising pond (1), the adjusting sleeve (505) drives a connecting rod (504) and a lifting partition plate (503) to synchronously move, the lifting partition plate (503) extends out of a partition bottom plate (501), a partition is formed between a seedling raising area (2) and a feeding area (3), and the fact that larvae in the middle of the seedling raising area (2) enter the feeding area (3) when the water is replaced is avoided;
(H) After the lifting partition plate (503) is lifted, a power supply of the electromagnet (406) is switched on, the electromagnet (406) performs magnetic adsorption on the permanent magnet (405), the permanent magnet (405) moves downwards to be close to the electromagnet (406), the permanent magnet (405) drives the lifting strip-shaped plate (403) to contract towards the inside of the bottom plate (401), an upper end opening of a drainage groove (407) originally blocked by the lifting strip-shaped plate (403) is opened, at the moment, seawater in the nursery pond (1) can be discharged outwards along the opened drainage groove (407) and a communication water tank (408), water flows obliquely on the surface of the guide strip (402) through the two guide strips (402) on the surface of the bottom plate (401), food residues and larva excreta on the surface of the guide strip (402) are washed away, and the inside of the feeding area (3) is cleaned while water is changed.
9. The method for raising seedlings according to claim 8, characterized in that: the area of the seedling raising area (2) occupies four fifths of the area of the seedling raising pool (1), and the area of the feeding area (3) occupies one fifth of the area of the seedling raising pool (1).
10. The method for raising seedlings according to claim 8, characterized in that: the thickness of the substrate is 10 cm-15 cm, and the height of the partition bottom plate (501) is larger than 15cm.
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