CN112042571A - Breeding system and method for native carps in rice field - Google Patents
Breeding system and method for native carps in rice field Download PDFInfo
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- CN112042571A CN112042571A CN202010963413.5A CN202010963413A CN112042571A CN 112042571 A CN112042571 A CN 112042571A CN 202010963413 A CN202010963413 A CN 202010963413A CN 112042571 A CN112042571 A CN 112042571A
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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
- A01K61/10—Culture of aquatic animals of fish
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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
Abstract
The invention discloses a breeding system and method for native carps in a rice field, and particularly relates to the technical field of aquaculture. The method fully utilizes natural water sources, breeds native carp parents and breeds native carp fingerlings under the condition of not changing natural growth environment, flexibly matches the number of parent fishes according to requirements, easily collects roes or hatched fries produced by the parent fishes in the spawning process, places the bred fries nearby, further improves production efficiency, reduces production cost, and promotes large-scale and intensive development.
Description
Technical Field
The embodiment of the invention relates to the technical field of aquatic breeding, in particular to a breeding system and method for native carps in rice fields.
Background
The fish culture in the rice field is to culture the fish in the rice field, and is a traditional farming culture in China. The method is characterized in that the fish culture in the rice field utilizes the shallow water environment of the rice field, is assisted by artificial measures, builds a certain form of rice field fish culture engineering in the rice field, builds an ecological planting and breeding system with rice and fish symbiosis, interdependence and mutual promotion, plants rice and cultures aquatic products, so that water resources, weed resources, aquatic animal resources, insects, other substances and energy in the rice field are more fully utilized by the cultured aquatic organisms, and through the life activities of the cultured aquatic organisms, the purposes of weeding, deinsectization, soil thinning and fertility increasing for the rice field are achieved, and the ideal effect of mutual benefiting and income increasing of the rice field is obtained.
At present, most varieties of the carps cultured in the rice fields are still carps, the history of rice field culture in China is long, native carp cultured in the rice fields forms native varieties suitable for rice field culture through artificial selection and natural selection, in order to not destroy the environmental adaptation of native fishes, a set of breeding system which does not destroy the ecological environment of the native fishes and is a scientific system is required to be established in the native carp from artificial propagation to seed culture and stocking in the rice fields, a complete breeding system suitable for the native carp in the rice fields is not available at present, most farmers utilize natural fish pits to conduct rough breeding and culture, the hatching rate of parent fishes is low, the survival rate of seed culture is low, and large-scale and intensive development is limited.
Disclosure of Invention
Therefore, the embodiment of the invention provides a breeding system and method for native carp in paddy field, which fully utilize natural water source, breed native carp parents and breed native carp fingerlings under the condition of not changing natural growth environment, flexibly match the number of parent fishes according to requirements, easily collect roes or hatched fingerlings produced by the parent fishes in the spawning process, and place the breeding fingerlings nearby, thereby further improving the production efficiency, reducing the production cost and promoting large-scale and intensive development.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a breeding system for native carps in rice fields comprises a hillside and a rice field, wherein the rice field is arranged on one side of the hillside, a water storage tank is arranged on one side of the hillside, spring water guide pipes are arranged on the hillside and fixedly arranged on one side of the water storage tank and communicated with the inside of the water storage tank, a plurality of incubation pools are arranged at the bottom of the water storage tank in a row along the front-back direction, a second pipeline is fixedly arranged on one side of the incubation pools and tightly attached to the inner wall of the incubation pools, a first pipeline is communicated with the top of the second pipeline and fixedly arranged at the bottom of the water storage tank and communicated with the inside of the water storage tank, a water outlet is formed in the bottom of the incubation pools, a water drainage pipe is arranged inside the water outlet, one end of the water drainage pipe extends out of the water outlet bottom, a limiting ring is fixedly arranged at, a first nylon net is fixedly arranged on the inner wall of the limiting ring, a seedling collecting pool is arranged at the bottom of the hatching pool, the seedling collecting pool is arranged at the top of the rice field, a corrugated pipe is fixedly arranged on one side of the seedling collecting pool, one end of the corrugated pipe is communicated with the inside of the seedling collecting pool, the other end of the corrugated pipe is fixedly connected with one end of a drain pipe, a fry cultivating pool is fixedly arranged on one side of the inside of the rice field, a third pipeline is fixedly arranged at the bottom end of the seedling collecting pool, one end of the third pipeline is communicated with the inside of the seedling collecting pool, the other end of the third pipeline is arranged at the top end of the fry cultivating pool, a fifth pipeline is arranged on one side of the bottom end of the fry cultivating pool, a fourth pipeline is arranged on one side of the first pipeline, the fourth pipeline is arranged at the top end of the fry cultivating pool and extends into the inside of the fry cultivating pool to be fixedly, the water pipe is fixed to be established in fry rearing pond inside bottom, water pipe one end and the inside intercommunication of fifth pipeline.
Furthermore, a water outlet is formed in the outer end of the hatching pond, the caliber of the hatching pond is circular and the diameter of the hatching pond is 0.6cm, the bottom of the hatching pond is in a pot bottom shape, the radian of a curved surface of the bottom of the hatching pond is 15 degrees, and a first valve is fixedly arranged on the second pipeline.
Further, the inside apron that is equipped with of outlet, the apron bottom contacts with the spacing ring top, the fixed sealing washer that is equipped with on the outlet inner wall, the sealing washer inner wall contacts with the drain pipe outer end.
Furthermore, a second valve is fixedly arranged on the third pipeline.
Furthermore, a sixth pipeline is fixedly arranged at the outer end of the drain pipe and is arranged at the bottom of the hatching pond, a fourth valve is fixedly arranged on the sixth pipeline, and a fifth valve is fixedly arranged on the corrugated pipe.
Further, the fixed third valve that is equipped with on the fourth pipeline, the export has been seted up to fry rearing pond one side, fry rearing pond one side is equipped with the iron fence, the parcel of iron fence outer end has the second nylon wire, the iron fence is established in export one side, the width of export is 50 cm.
Furthermore, a plurality of small holes are formed in the top end of the water pipe, the diameter of each small hole is 2mm, the distance between every two adjacent small holes is 20cm, and a pipe cap is fixedly arranged at the other end of the water pipe.
The invention also comprises a breeding method of the rice field native carp breeding system, which comprises the following steps:
the method comprises the following steps: selecting adult fish with the age of more than two winter years, wherein the ratio of the number of male fish to female fish is 1: 1, placing two male fishes and two female fishes in each hatching pond, wherein the abdomen of the female fishes is enlarged and soft, and the male fishes lightly press the genitals to flow out semen; the oxytocic uses chorionic gonadotropin, luteinizing hormone releasing hormone analogue and diosone, adopts a one-needle method, the dosage of male fish is half of that of female fish, and the floating grass such as hyacinth and the like is arranged on an incubation pool to be used as an ovary, the effect time of general medicines is about 8h, the temperature is slightly high, and the effect time is slightly short;
step two: after the spawning needle is used for 12 hours, the fish in the hatching pond is moved out, the spawning chamber is left in the hatching pond for continuous hatching, the water changing amount is increased, after 48 hours, the fry breaks membranes and is moved out of the spawning chamber, when the fry swims flatly, a meal of yolk is fed, then a fifth valve is opened to place the fry into a fry collecting pond, and then the fry is collected from a fry collecting position at the bottom of the fry collecting pond;
step three: 1 fry rearing pond is built in each rice field, 1 week before fry rearing, water is drained from an incubation pond and microbial preparation sprinkling water for rearing, when the fry rearing is just reared, a third valve on a fourth pipeline is adjusted to reduce the water exchange amount, the fry is generally fed for 3 meals every day, soybean milk is taken as a main feed, the feed amount is properly increased and decreased according to the fish feed amount, the fry is fed according to 3 percent of the weight of the fry, the fry rearing is changed to be matched with feed for powdering or feeding eel after 10 days, the water change amount is increased at the moment, and oxygen deficiency is prevented;
step four: when the fry is cultivated to 2-3cm, pulling out the iron fence wrapped by the second nylon net on the outlet, allowing the fish to enter the rice field, keeping the water level of the rice field at 10-20cm, dividing the fish into other vacant fry cultivating ponds when the fish grows to 6-10cm, and directly putting the fish into the rice field for cultivation.
The embodiment of the invention has the following advantages:
the breeding system of the invention fully utilizes the natural environmental conditions of the hillside and the rice field, utilizes low cost to solve big problems, effectively solves the working efficiency of parent fish incubation and fry cultivation in the production process, improves the incubation rate to more than 93 percent and the fry cultivation survival rate to 95 percent under the condition of not changing the water environment and the production environment of native carp, promotes the large-scale and intensive development of fish cultivation in the rice field, and meets the requirement of the current vogue quality improvement increment in rural areas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of B of FIG. 1 according to the present invention;
fig. 4 is a schematic view of an internal top structure of the fry rearing pond according to the present invention;
in the figure: 1 hillside, 2 paddy fields, 3 cistern, 4 mountain spring water pipes, 5 hatching ponds, 6 first pipeline, 7 second pipeline, 8 outlet, 9 drain pipes, 10 spacing ring, 11 first nylon wire, 12 seedling collecting ponds, 13 bellows, 14 third pipeline, 15 fry rearing ponds, 16 fourth pipeline, 17 water pipe, 18 export, 19 first valve, 20 delivery ports, 21 second valve, 22 third valve, 23 iron fence, 24 second nylon wire, 25 apertures, 26 apron, 27 sealing washer, 28 fifth pipeline, 29 pipe cap, 30 sixth pipeline, 31 fourth valve, 32 fifth valve.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
Referring to the attached drawings 1-4 in the specification, the invention provides a breeding system for native carp in rice field, which comprises a hillside 1 and a rice field 2, wherein the rice field 2 is arranged on one side of the hillside 1, a reservoir 3 is arranged on one side of the hillside 1, a spring water conduit 4 is arranged on the hillside 1, the spring water conduit 4 is fixedly arranged on one side of the reservoir 3 and is communicated with the interior of the reservoir 3, the reservoir 3 is built according to the higher altitude of the hillside 1, spring water flows into the reservoir 3 through the spring water conduit 4, a plurality of incubation ponds 5 are arranged at the bottom of the reservoir 3, a row of the incubation ponds 5 is arranged along the front and back direction, a second pipeline 7 is fixedly arranged on one side of the incubation ponds 5, the second pipeline 7 is tightly attached to the inner wall of the incubation ponds 5 to enable the pond water to form spiral flow, a first pipeline 6 is communicated with the top of the second pipeline 7, the first pipeline 6 is fixedly arranged at the bottom of the reservoir 3 and is communicated, the water in the water storage tank 3 flows into the circular parent fish spawning incubation tank 5 through the topographic height difference, a water outlet 8 is formed in the bottom end of the incubation tank 5, a water discharge pipe 9 is arranged inside the water outlet 8, one end of the water discharge pipe 9 extends out of the bottom end of the water outlet 8, a limiting ring 10 is fixedly arranged at the other end of the water discharge pipe 9, the outer end of the limiting ring 10 is in contact with the inner wall of the water outlet 8, a first nylon net 11 is fixedly arranged on the inner wall of the limiting ring 10, a seedling collection tank 12 is arranged at the bottom of the incubation tank 5, the seedling collection tank 12 is arranged at the top of the rice field 2, incubated seedlings are collected from the bottom of the seedling collection tank 12, the seedling collection tank 12 is built into the depth of 1m, the width of 1m and the length of 1m by cement mortar, a corrugated pipe 13 is fixedly arranged at one side of the seedling collection tank 12, one end of, according to the water quantity, the pull-plug drain pipe 9 is moved up and down to enable the top end of the drain pipe 9 to be positioned at different heights in the hatching pond 5, so as to achieve the purpose of controlling the water quantity in the hatching pond 5, a fry cultivating pond 15 is fixedly arranged on one side inside the rice field 2, the fry cultivating pond 15 is built at one corner of the rice field 2, the rice field area is 330-, fourth pipeline 16 establishes on 15 tops of fry rearing pond and extends into 15 inside and the 28 top fixed connection of fifth pipeline of fry rearing pond, fourth pipeline 16 and the inside intercommunication of first pipeline 6 and fifth pipeline 28, the fixed four water pipes 17 that are equipped with of fifth pipeline 28 one end, water pipe 17 is fixed to be established in 15 inside bottoms of fry rearing pond, the inside intercommunication of water pipe 17 one end and fifth pipeline 28, and cistern 3, incubation pond 5 and seedling collection pond 12 all utilize the support fixed when actual installation.
Further, a water outlet 20 is formed in the outer end of the hatching pond 5, the water surface is controlled not to overflow the hatching pond 5, the caliber of the hatching pond 5 is circular and 0.6cm in diameter, the bottom of the hatching pond 5 is in a pot bottom shape, the radian of a curved surface is 15 degrees, and a first valve 19 is fixedly arranged on the second pipeline 7.
Further, the inside apron 26 that is equipped with of outlet 8, apron 26 bottom contacts with the spacing ring 10 top, and the fry after laying eggs takes out parent fish, hatches in hatchery 5, and hatchery 5 bottom is stopped up with apron 26, and hatchery 5 goes out water from delivery port 20 this moment, the fixed sealing washer 27 that is equipped with on the 8 inner walls of outlet, the sealing washer 27 inner wall contacts with drain pipe 9 outer end, realizes that the space is sealed between drain pipe 9 and outlet 8.
Further, a second valve 21 is fixedly arranged on the third pipeline 14.
Further, a sixth pipeline 30 is fixedly arranged at the outer end of the water discharge pipe 9, the sixth pipeline 30 is arranged at the bottom of the hatching pond 5, a fourth valve 31 is fixedly arranged on the sixth pipeline 30, and a fifth valve 32 is fixedly arranged on the corrugated pipe 13.
Further, the fixed third valve 22 that is equipped with on the fourth pipeline 16, export 18 has been seted up to fry rearing pond 15 one side, fry rearing pond 15 one side is equipped with iron fence 23, the parcel of iron fence 23 outer end has second nylon wire net 24, iron fence 23 is established in export 18 one side to prevent that the fry from running into paddy field 2, the width of export 18 is 50 cm.
Further, a plurality of apertures 25 have been seted up at water pipe 17 top, the aperture 25 diameter is 2mm, two adjacent the interval between the aperture 25 is 20cm, pipe cap 29 is fixed to the water pipe 17 other end, and the water of cistern 3 flows into water pipe 17 through fourth pipeline 16 and fifth pipeline 28, and the water head makes the water of water pipe 17 spout into fry rearing pond 15 through aperture 25 to play the effect of exploding the gas oxygenation.
The invention also comprises a breeding method of the rice field native carp breeding system, which comprises the following steps:
the method comprises the following steps: selecting adult fish with the age of more than two winter years, wherein the ratio of the number of male fish to female fish is 1: 1, placing two male fishes and two female fishes in each hatching pond 5, wherein the abdomen of the female fishes is enlarged and soft, and the male fishes lightly press the genitals to flow out of seminal fluid; the oxytocic uses chorionic gonadotropin (HCG), luteinizing hormone releasing hormone analogue (LRH-A) and Diospyrone (DOM), adopts a needle method, the dosage of male fish is half of that of female fish, water hyacinth and other floating grass are put on an incubation pool 5 to be used as an ovary, the effect time of general medicines is about 8h, the temperature is slightly high, and the effect time is slightly short;
step two: after the spawning needle is used for 12 hours, the fish in the hatching pond 5 is moved out, the spawning chamber is left in the hatching pond 5 to be continuously hatched, the water changing amount is increased, after 48 hours, the membrane of the fish fry is broken, the spawning chamber is moved out, when the fish fry swims flatly, a meal of egg yolk is fed, then the fifth valve 32 is opened, the fish fry is placed in the fry collecting pond 12, and then the fish fry is collected from a fry collecting position at the bottom of the fry collecting pond 12;
step three: 1 fry rearing pond 15 is built in each paddy field 2, 1 week before fry rearing, water is drained from an incubation pond 5 and microbial preparation sprinkling water for rearing, when the fry rearing is just reared, a third valve 22 on a fourth pipeline 16 is adjusted to reduce the water exchange amount, the fry is generally fed for 3 meals each day, soybean milk is taken as the main feed, the feed amount is properly increased and decreased according to the fish amount, the fry is fed according to 3 percent of the weight of the fry, the fry is fed after 10 days by mixing with feed for powdering or feeding eel, and the water change amount is increased to prevent oxygen deficiency;
step four: when the fry is cultivated to 2-3cm, the iron fence 23 wrapped by the second nylon net 24 on the outlet 18 is pulled out, the fish enters the paddy field 2, the water level of the paddy field 2 is kept at 10-20cm, when the fish grows to 6-10cm, the fish is separated into other vacant fry cultivating ponds 15, and the fish can be directly thrown into the paddy field 2 for cultivation.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. The utility model provides a native carp breeding system in paddy field, includes hillside (1) and paddy field (2), establish in hillside (1) one side in paddy field (2), its characterized in that: the water storage tank (3) is arranged on one side of the hillside (1), spring water guide pipes (4) are arranged on the hillside (1), the spring water guide pipes (4) are fixedly arranged on one side of the water storage tank (3) and are communicated with the inside of the water storage tank (3), a plurality of incubation pools (5) are arranged at the bottom of the water storage tank (3), one row of incubation pools (5) are arranged along the front-back direction, a second pipeline (7) is fixedly arranged on one side of the incubation pools (5), the inner walls of the incubation pools (5) are tightly attached to the second pipeline (7), a first pipeline (6) is communicated with the top of the second pipeline (7), the first pipeline (6) is fixedly arranged at the bottom of the water storage tank (3) and is communicated with the inside of the water storage tank (3), a water outlet (8) is formed in the bottom of the incubation pools (5), a water drainage pipe (9) is arranged in the water outlet (8), the device is characterized in that a limiting ring (10) is fixedly arranged at the other end of the drainage pipe (9), the outer end of the limiting ring (10) is in contact with the inner wall of the drainage outlet (8), a first nylon net (11) is fixedly arranged on the inner wall of the limiting ring (10), a seedling picking pool (12) is arranged at the bottom of the hatching pool (5), a corrugated pipe (13) is fixedly arranged at the top of the rice field (2) at one side of the seedling picking pool (12), one end of the corrugated pipe (13) is communicated with the inside of the seedling picking pool (12) and the other end of the corrugated pipe is fixedly connected with one end of the drainage pipe (9), a fry cultivating pool (15) is fixedly arranged at one side of the inside of the rice field (2), a third pipeline (14) is fixedly arranged at the bottom end of the seedling picking pool (12), one end of the third pipeline (14) is communicated with the inside of the seedling picking pool (12) and the other end of the seedling picking pool is arranged at the, first pipeline (6) one side is equipped with fourth pipeline (16), fourth pipeline (16) are established on fry rearing pond (15) top and are extended into fry rearing pond (15) inside and fifth pipeline (28) top fixed connection, fourth pipeline (16) and first pipeline (6) and the inside intercommunication of fifth pipeline (28), fifth pipeline (28) one end is fixed and is equipped with four water pipes (17), water pipe (17) are fixed to be established in the inside bottom of fry rearing pond (15), water pipe (17) one end and the inside intercommunication of fifth pipeline (28).
2. The system for breeding carp indigenous to rice field according to claim 1, wherein: delivery port (20) have been seted up to hatching pond (5) outer end, hatching pond (5) pond bore is circular and diameter 0.6cm, hatching pond (5) bottom is bottom of a boiler shape and curved surface radian and is 15, fixed first valve (19) of being equipped with on second pipeline (7).
3. The system for breeding carp indigenous to rice field according to claim 1, wherein: the water outlet is characterized in that a cover plate (26) is arranged inside the water outlet (8), the bottom end of the cover plate (26) is in contact with the top end of the limiting ring (10), a sealing ring (27) is fixedly arranged on the inner wall of the water outlet (8), and the inner wall of the sealing ring (27) is in contact with the outer end of the water drainage pipe (9).
4. The system for breeding carp indigenous to rice field according to claim 1, wherein: and a second valve (21) is fixedly arranged on the third pipeline (14).
5. The system for breeding carp indigenous to rice field according to claim 1, wherein: the fixed sixth pipeline (30) that is equipped with of drain pipe (9) outer end, sixth pipeline (30) are established in hatching pond (5) bottom, the fixed fourth valve (31) that is equipped with on sixth pipeline (30), fixed fifth valve (32) that is equipped with on bellows (13).
6. The system for breeding carp indigenous to rice field according to claim 1, wherein: fourth pipeline (16) are gone up the fixed third valve (22) that is equipped with, export (18) have been seted up to fry rearing pond (15) one side, fry rearing pond (15) one side is equipped with iron fence (23), iron fence (23) outer end parcel has second nylon wire net (24), iron fence (23) are established in export (18) one side, the width of export (18) is 50 cm.
7. The system for breeding carp indigenous to rice field according to claim 1, wherein: a plurality of apertures (25) have been seted up on water pipe (17) top, aperture (25) diameter is 2mm, adjacent two interval between aperture (25) is 20cm, water pipe (17) other end is fixed and is equipped with pipe cap (29).
8. The system for breeding carp indigenous to rice field according to any one of claims 1 to 7, wherein: the method also comprises a breeding method of the rice field native carp breeding system, and the method comprises the following specific steps:
the method comprises the following steps: selecting adult fish with the age of more than two winter years, wherein the ratio of the number of male fish to female fish is 1: 1, placing two male fishes and two female fishes in each hatching pond (5), wherein the abdomen of each female fish is enlarged and soft, and the male fishes lightly squeeze the genitals to flow out of seminal fluid; the oxytocic uses chorionic gonadotropin, luteinizing hormone releasing hormone analogue and diosone, adopts a one-needle method, the dosage of male fish is half of that of female fish, the floating grass such as water hyacinth and the like on the hatching pond (5) is used as an ovary, the effect time of general medicines is about 8h, the temperature is slightly high, and the effect time is slightly short;
step two: after the spawning needle is used for 12 hours, the fish in the hatching pond (5) is moved out, the spawning chamber is left in the hatching pond (5) to be continuously hatched, the water changing amount is increased, after 48 hours, the fry breaks membranes and is moved out of the spawning chamber, when the fry swims flatly, a meal of yolk is fed, then a fifth valve (32) is opened to place the fry into the fry collecting pond (12), and then the fry is collected from a fry collecting position at the bottom of the fry collecting pond (12);
step three: 1 fry rearing pond (15) is built in each rice field (2), 1 week before fry rearing, water is drained from an incubation pond (5) and microbial preparation is splashed for rearing water, when the fry is rearing, a third valve (22) on a fourth pipeline (16) is adjusted to reduce the water exchange amount, 3 meals are fed each day generally, soybean milk is taken as the main feed, the feed amount is properly increased and decreased according to the fish amount, the feeding is performed according to 3% of the daily feed amount, the feeding is changed into mixed feed powdering or eel feed feeding after 10 days, the water change amount is increased at the moment, and oxygen deficiency is prevented;
step four: when the fry is cultivated to 2-3cm, pulling out the iron fence (23) which is wrapped by the second nylon net (24) and arranged on the outlet (18), leading the fish to enter the rice field (2), keeping the water level of the rice field (2) at 10-20cm, dividing the fish into pools when the fish grows to 6-10cm, dividing the fish into other vacant fry cultivating pools (15), and also directly putting the fish into the rice field (2) for cultivation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114651753A (en) * | 2022-03-25 | 2022-06-24 | 武汉联渔机械设备有限公司 | Aquatic fry production system and aquatic fry production method |
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