CN114208756A - Circulating water intensive culture method for river crabs - Google Patents
Circulating water intensive culture method for river crabs Download PDFInfo
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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
- 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
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/51—Culture of aquatic animals of shellfish of gastropods, e.g. abalones or turban snails
-
- 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
- A01K63/006—Accessories for aquaria or terraria
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
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- Farming Of Fish And Shellfish (AREA)
Abstract
The invention provides a river crab circulating water intensive culture method, which comprises the steps of constructing an intensive culture pond, putting crab seeds, putting snails and putting fish seeds, culturing in the intensive culture pond which is composed of a culture pond, an ecological channel and a purification pond, planting waterweeds such as waterweed, bitter grass, water peanuts, water hyacinth, hornworts and the like, arranging culture net cages in the culture pond, putting 200-300 river crabs in a single box body, and managing the water quality and feeding feeds in the culture pond in the culture process. The invention takes the intensive culture net cage as a carrier and combines a circulating water purification technology, thereby greatly improving the yield of the river crabs in unit area of the pond, further purifying the tail water of the pond culture, improving the pond culture environment and greatly improving the economic benefit and the ecological benefit of the river crab culture.
Description
Technical Field
The invention relates to the technical field of ecological breeding of river crabs, in particular to a circulating water intensive breeding method of river crabs.
Background
At present, the river crab culture is mainly based on the traditional pond culture mode, mainly cultures river crabs, and mixedly cultures a small number of other economic species, such as freshwater shrimps, mandarin fish, weever, macrobrachium rosenbergii and the like. The yield per unit area of the river crabs in the breeding mode is generally 0.15kg per square meter or so, and the total yield per unit area of the river crabs in the breeding mode is generally 15 yuan per square meter or so by calculating the yield value of other economic species which are cultured in a mixed manner.
The breeding mode mainly has the following two problems that the unit yield is low and unstable, and the river crab recapture rate is low; secondly, the culture tail water is discharged in large quantity and cannot be effectively treated, so that the ecological pollution of the culture water area to a certain degree is caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the method for intensively culturing the river crabs by circulating water is provided.
In order to solve the technical problems, the invention provides a circulating water intensive culture method for river crabs, which comprises the following steps:
(1) constructing an intensive culture pond: the intensive aquaculture pond comprises an aquaculture pond, an ecological channel and a purification pond, wherein the area ratio of the aquaculture pond to the ecological channel to the purification pond is (3-5): 1: 1, the total area is 20-30 mu; an overflow dam is arranged between the culture pond and the ecological channel, an undercurrent dam is arranged between the ecological channel and the purification pond, and purified water in the purification pond is used for production operation in the culture pond; planting waterweeds in the culture pond and laying culture net cages;
(2) crab spawn throwing: putting 400 crab seeds in the culture pond with the density of 100-; after the crab spawns are put in, 0.2-0.4 g/cubic meter of vitamin C is used for splashing in a full pool for three consecutive days;
(3) throwing in snails: throwing snails into the culture pond and the purification pond at one time, wherein the throwing density is 0.8-1.2kg/m2(ii) a Beginning in the first ten days of 6 months, throwing snails into the culture net cage once every half month, wherein the throwing amount is 18-20 kg/culture net cage;
(4) putting the fish seeds: and in late ten days of 5 months, putting silver carps and bighead carps into the culture pond, the ecological canal and the purification pond in a ratio of 3: 2, the specification is 4-5 cm/tail, and the stocking density is 50 tails/mu.
Preferably, the water quality management of the culture pond specifically comprises: sprinkling 15 kg/mu of quick lime water in the whole pool once every half month; the microbial preparation is administered 1-2 times and the substrate modifier 1-2 times per month.
Preferably, the feed is fed to the culture pond, and the feed feeding method comprises the following specific steps: feeding special granulated feed for river crabs with the protein content of 40-42% from the fourth day to the crab seeds, wherein the feeding amount of the feed is 4-6% from the first 6 months, and gradually and properly increases along with time; 7-8 months, the feed protein content is 30% -40%, and the feeding amount is 6%; beginning to fishing in the last ten days of 9 months, the feed protein content is 40 percent, the feeding amount is 8 percent, and the pumpkin and the corn are supplemented, and the feeding is carried out once every 2 days.
Preferably, at the beginning of 6 months, the feed is uniformly mixed by clostridium butyricum and/or lactic acid bacteria with the feeding amount of 1 percent before each feed is fed, and then the feed is fed.
Preferably, a filtering groove is arranged in the dam body of the undercurrent dam and the overflow dam, and one or more of filtering sand and stone, volcanic rock, coral rock and biological balls are placed in the filtering groove.
Preferably, the aquatic weeds comprise one or more of waterweed, eel grass, water peanut, water hyacinth and golden fish algae.
Preferably, the interior of the aquaculture net cage is provided with a cave, a simulated aquatic plant and a bait platform, and the bottom of the aquaculture net cage is provided with a microporous oxygen-increasing pipeline.
Preferably, the volume of a single box body of the aquaculture net cage is 5m3And 90 net cages are arranged.
Preferably, 200-300 river crabs are thrown into a single box body of the aquaculture net cage.
The invention has the beneficial effects that:
compared with the prior art, the technical scheme has the following advantages: the intensive culture net cage is used as a carrier, and a circulating water purification technology is combined, so that the yield of the river crabs in the unit area of the pond is greatly increased, tail water of pond culture is further purified, the culture environment of the pond is improved, and the economic benefit and the ecological benefit of the river crab culture are greatly increased.
Drawings
FIG. 1 is a schematic diagram of the units of an intensive aquaculture pond according to the present invention;
FIG. 2 is a schematic diagram of the system of the intensive aquaculture pond, the constructed circulating water purification system can improve the water environment of river crabs cultured at high density, ensure that the physicochemical indexes of the water body in each period meet the aquaculture requirements, also meet the tail water discharge standard and improve the aquaculture ecological environment;
FIG. 3 is a diagram showing the connection relationship between the aeration equipment and the simulated aquatic plants.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, specific embodiments thereof will be described in detail with reference to the following examples.
Example 1
1. Materials and reagents
In 1 month from 2021, in a culture base of Jinjia agriculture science and technology limited company in Nanjing, river crabs are intensively cultured by circulating water through 20 mu of ponds (culture pond: ecological canal: purification pond: 4: 1: 1).
2. Procedure of experiment
(1) Constructing a pond: the areas of the culture pond, the ecological channel and the purification pond are 14 mu, 3 mu and 3 mu respectively; an overflow dam is arranged between the culture pond and the ecological channel, an undercurrent dam is arranged between the ecological channel and the purification pond, a water pump is arranged between the purification pond and the culture pond, and purified water is pumped into the culture pond by the water pump to form a circulating purification system.
(2) Pond conditions: the water source is sufficient, and the substrate and water quality conditions meet the requirements of NY/T391-2013; the culture pond and the purification pond are provided with impeller oxygen-increasing machines with the power of 0.5kw/667 square meter and 0.1kw/667 square meter.
(3) Clearing and tidying the pond: 1 in the middle of the month, cleaning all ponds and ditches, drying the ponds and ditches until the bottoms of the ponds are dry and cracked, and injecting water 10cm and 150kg/667m3After the quicklime is cured into slurry, water is uniformly added and splashed in the whole pool, and after 7 days, new water is added.
(4) Planting the aquatic weeds: beginning to plant the aquatic weeds in the last ten days of 2 months, and applying 20kg of calcium superphosphate as a base fertilizer on each mu of water surface before planting the aquatic weeds. In the last ten days of 2 months, the water level of the culture pond is 30cm, and the waterweeds are planted in the middle of the culture pond and occupy 50% of the area of the pond. Sowing seeds of the tape grass in the culture pond and the purification pond in late 3 ten days of the month, wherein the sowing quantity is 2g/m2. In the last ten days of the month 5, water peanuts and water hyacinth are planted on two sides of the ecological ditch and fixed by bamboo fences, and dense goldfish algae are transplanted at the bottom of the ecological ditch. The higher aquatic weed species collocation and planting density can prevent water eutrophication, prevent blue algae outbreak, and maintain and improve culture water quality and substrate environment.
(5) Erecting a net cage: the structure of the net cage is as in patent publication CN113508777A [0025-]The difference is that a directional oxygen increasing structure (such as an air pipe) or an oxygen increasing device with micropores for increasing oxygen is additionally arranged at the bottom of the net cage, so that oxygen is increased into the aquaculture net cage. The volume of a single box body is 5m3The interior of the box body consists of a three-dimensional simulated cave, simulated waterweeds and a bait table, and the bottom of the box body is provided with micropores for oxygenation; the three-dimensional nest structure of the net cage increases the activity space of the river crabs, can prevent the river crabs from mutual mutualism, is beneficial to improving the survival rate, provides a space foundation for the high-density culture of the river crabs and ensures the high yield of the river crabs. The oxygen increasing equipment at the bottom of the net cage can realize a local high dissolved oxygen environment in the river crab culture box, improve the dissolved oxygen content of the river crab in the molting period, contribute to improving the doubling rate of the molted river crab and improve the specification of the river crab.
Specifically, 90 net cages are arranged in the culture pond, 15 net cages are divided into one group and are divided into 6 groups, the net cages are uniformly distributed around the pond and can move up and down, wherein air pipes are fixed at the bottom of the net cages and are used as directional oxygen increasing structures, simulated aquatic weeds in the net cages are hollow structures, small holes communicated with the directional oxygen increasing structures are formed in the surfaces of the simulated aquatic weeds, the air pipes are communicated with the simulated aquatic weeds, so that air flows into the simulated aquatic weeds through the air pipes and is dispersed into the culture net cages through the small holes in the surfaces of the simulated aquatic weeds, the dispersibility of oxygen increase of water in the net cages is improved, and compared with a traditional oxygen increasing mode of oxygen increasing air stones, the local concentrated overflow of a large amount of air flow can be well avoided, the strong disturbance of the air flow in culture areas in the net cages is avoided, the obvious negative influence of the disturbance during crab shelling is avoided, and the death rate of the crabs during the shelling period is obviously reduced, ensuring the river crab to be smoothly shelled. Better, the emulation pasture and water homodisperse of net incasement arranges, and every cavity emulation pasture and water can both be connected with corresponding trachea.
(6) Density setting: the five groups of net cages are divided into 3 breeding densities, wherein two groups are 150 cages/cage, two groups are 200 cages/cage, and two groups are 300 cages/cage.
(7) Crab spawn throwing: in the last ten days of 2 months, crab seeds are selected and put into the net cage in clear weather, the specification of the crab seeds is 60/kg, and the physical health is not damaged. After the crab spawns are put in, the vitamin C of 0.3 g/cubic meter is used for sprinkling in the whole pool for three consecutive days. The general specification of healthy crab species is 40-160/kg, and the specification of the optimal crab species is 60/kg in consideration of the volume of the culture net cage and the growth stage of the river crabs.
(8) Throwing in snails: in last ten days of 4 months, snails are put into the culture pond and the purification pond at one time, and the putting density is 1kg/m2(ii) a Beginning in the last ten days of 6 months, spiral shells are put in the cultivation net cage once every half month, and the putting amount is 20 kg/cage. The throwing of the snails can provide animal baits for the river crabs on one hand, and can clean the internal environment of the box body on the other hand, thereby ensuring the safety and stability of the breeding environment in the box body.
(9) Putting the fish seeds: in late ten days of the month 5, putting silver carps and bighead carps into the culture pond, the ecological canal and the purification pond in a ratio of 3: 2, the specification is 4-5 cm/tail, and the stocking density is 50 tails/mu. The fish species are healthy and harmless, and are soaked in a potassium permanganate solution of 800ppm for 15 minutes before stocking.
(10) Feeding the feed: feeding special granulated feed for river crabs with the protein content of 42 percent from the fourth day to the crab seeds, wherein the feeding amount of the feed is 4 to 6 percent from the first 6 months, and gradually and properly increases along with the time; 7-8 months, the feed protein content is 36%, and the feeding amount is 6%; beginning to fishing in the last ten days of 9 months, the feed protein content is 40 percent, the feeding amount is 8 percent, and the pumpkin and the corn are supplemented, and the feeding is carried out once every 2 days. And starting in 6 months, uniformly stirring the feed with clostridium butyricum and lactic acid bacteria with the feed amount of 1% before feeding the feed each time, and then feeding the feed. The probiotics mixed with the feed can improve the intestinal environment of the river crabs to ensure the healthy growth of the river crabs on one hand, and can construct a stable flora structure in the box body to ensure the safety and stability of the microbial environment in the box body on the other hand.
(11) Water quality management: the culture pond is used for 15kg/667m every half month2The quicklime water is splashed once in the whole pool; using microbial preparation such as EM bacteria and photosynthetic bacteria for 1-2 times per month; the substrate modifier is used for 1-2 times. The impeller type oxygen increasing machines in the culture pond and the purification pond are started every day to promote the water body to flow and improve the dissolved oxygen of the water body. The micro-hole oxygen increasing at the bottom of the box body is opened ceaselessly during the concentrated molting period of the river crabs. And starting a circulating water system according to the water quality condition, and increasing the circulating water frequency within 7-9 months, wherein the water change amount is about 10% each time.
(12) Catching the adult crabs: and (4) beginning in 10 months, sequentially checking all the cultivation boxes every day, selecting mature river crabs out of the cages, and finishing the fishing in 11 late months. The cage culture mode greatly reduces the working strength of river crab fishing and improves the river crab fishing efficiency.
(13) Fishing the adult fish: after the adult crabs are fished, all the adult silver carps and bighead carps in the culture pond are fished out, and the adult silver carps in the ecological pond and the purification pond are left for continuous culture in the next year.
3. Data, results and analysis thereof
The method of the embodiment is used for carrying out circulating water intensive culture on the river crabs, and the stocking condition and the harvesting result of the river crabs are as follows:
TABLE 1 river crab stocking and harvesting
As shown in Table 1, according to the method, according to the stocking density of 300 crabs/box, the average specification of finished crabs is 195 grams, the recapture rate can reach 72 percent, the harvest yield of 42.32 kg/box can be realized, the yield per mu can reach 190kg, and the yield per unit area can reach 0.29 kg/square meter.
TABLE 2 physicochemical index of water quality in culture pond
TABLE 3 physical and chemical indexes of bottom mud and heavy metal content in culture pond
As shown in Table 2, the physicochemical indexes of the water bodies of all the periods of the culture pond all meet the first-level limit value of tail water discharge of fresh water accepting water areas in the Pond culture tail water discharge Standard (DB 324043-2021); as shown in Table 3, the variation range of each physical and chemical index and heavy metal content of the sediment is small, and the sediment environment is stable.
Compared with the traditional river crab culture mode, the mode can greatly improve the river crab yield per unit area of the pond, further purify the tail water of the pond culture, improve the pond culture environment, improve the economic benefit and the ecological benefit of the river crab culture, and has important promoting significance for transformation and upgrading of the river crab industry.
Example 2:
the embodiment provides a circulating water intensive culture method for river crabs, which comprises the following five steps:
(1) constructing pond circulating water;
(2) arranging a culture net cage;
(3) building a pond environment;
(4) putting in breeding varieties;
(5) and (5) daily breeding management.
Further, the step (1) comprises the following steps:
(1.1) the culture pond, the ecological canal and the purification pond form a standard culture unit as shown in the attached figure 1; one standard culture unit is 20-30 mu, and the culture pond comprises: ecological canal: purification pool (area) ═ 4: 1: 1.
(1.2) constructing an overflow dam: an overflow dam is arranged between the culture pond and the ecological channel, the length of the overflow dam is 20m, the width of the overflow dam is 1.5m, the top of the overflow dam is about 30cm higher than the water surface of the culture pond, the upper part of the overflow dam is piled up by porous bricks, fillers such as volcanic rocks, corallites, biological balls and the like can be piled in the filter tank, and tail water of the culture pond flows into the ecological channel through the overflow dam.
(1.3) constructing an undercurrent dam: an undercurrent dam is arranged between the ecological canal and the purification tank, the length of the undercurrent dam is 10m, the width of the undercurrent dam is 3m, the top of the undercurrent dam is higher than the overflow dam by about 30cm, the lower part of the undercurrent dam is piled up by porous bricks, 3 grids of filter tanks are arranged in the dam body, and sand and stones are filtered in the filter tanks. The ecological canal water flows into the purifying tank through the overflow dam.
(1.4) the culture pond and the purification pond are provided with impeller oxygen-increasing machines, and the configuration power is 0.5kw/667 square meter and 0.2kw/667 square meter respectively. A water pump is arranged between the purification tank and the culture tank, and purified water is pumped into the culture tank by the water pump.
Further, the step (2) comprises the following steps:
(2.1) the intensive river crab culture box is internally composed of modules such as a three-dimensional simulated cave, simulated waterweeds, a bait table and the like, and a microporous oxygen-increasing pipeline is arranged at the bottom of the box body. The volume of a single box body is 5m3And the preset carrying capacity of the river crabs in a single box body is 200-300.
(2.2) placing 6 intensive culture boxes per 667 square meter in the culture pond, and placing 80-120 culture boxes in one standard culture unit.
(2.3) all the aquaculture net cages are combined and fixed through steel pipe frameworks and electric pulley blocks, and the water-free height of the aquaculture net cages is adjusted through electric pulleys, so that the growth condition of the river crabs and the utilization condition of the feed can be checked at any time; secondly, the water level height of the net cage can be adjusted, and the height of the net cage needs to be reduced when the net cage is high in summer; thirdly, the fishing efficiency is improved, and the river crabs can be caught only by automatically lifting the net cage in the mature season.
Further, the step (3) comprises the following steps:
(3.1)1 in the middle of the month, clearing and tidying all ponds and ditches, drying until the bottom of the pond is cracked,injecting water of 5-10 cm in volume and 150kg/667m in volume3After the quicklime is cured into slurry, adding water, uniformly sprinkling the water in the whole pool, and adding new water for 7-10 days.
(3.2) in last ten days of 2 months, the water level of the culture pond is 30cm, and the waterweeds are planted in the middle of the culture pond and account for 50% of the area of the pond.
(3.3) sowing the seeds of the tape grass in the late 3 th ten days in the culture pond and the purification pond, wherein the sowing amount is 2-2.5 g/m2。
(3.4) planting alternanthera philoxeroides and eichhornia crassipes on two sides of the ecological ditch in the last ten days of 5 months, and fixing the alternanthera philoxeroides and eichhornia crassipes by using mao bamboo fences; dense golden fish algae are transplanted at the bottom of the ecological ditch.
Further, the step (4) comprises the following steps:
(4.1) putting the crab seeds in the net cage in late 2 months, wherein the specification of the crab seeds is 60-100 crab seeds/kg.
(4.2) throwing snails into the culture pond and the purification pond in last ten days of 4 months at one time, wherein the throwing density is 1kg/m2；
(4.3) putting silver carps and bighead carps into the culture pond, the ecological canal and the purification pond in late 5 th day in a ratio of 3: 2, the specification is 4-5 cm/tail, and the stocking density is 50 tails/mu.
(4.4) beginning in the last ten days of 6 months, throwing the snails into the cultivation net cage once every half month, wherein the throwing amount is 25 kg/cage.
Further, the step (5) comprises the following steps:
(5.1) the culture pond is used for 15kg/667m every half month2The quicklime water is splashed once in the whole pool; using microbial preparation such as EM bacteria and photosynthetic bacteria for 1-2 times per month; the substrate modifier is used for 1-2 times.
And (5.2) before planting various waterweeds, applying 20kg of calcium superphosphate as a base fertilizer on each mu of water surface.
And (5.3) starting impeller type oxygen increasing machines in the culture pond and the purification pond every day to promote the water body to flow and improve the dissolved oxygen of the water body.
(5.4) starting a circulating water system according to the water quality condition, and increasing the circulating water frequency within 7-9 months, wherein the water change amount is 10% -20% each time.
(5.5) feeding the river crabs into the special granulated feed in the net cage, uniformly stirring the feed with clostridium butyricum and lactobacillus with the feed amount of 1 percent before feeding the feed each time, and then feeding the feed to a bait table.
(5.6) periodically starting oxygenation at the bottom of the net cage every day, and prolonging the time of oxygenation every day during the river crab shelling period.
And (5.7) after the culture period is finished, cleaning the overflow dam and the underflow dam through back flushing.
The invention takes the intensive culture net cage as a carrier and combines a circulating water purification technology, thereby greatly improving the yield of the river crabs in unit area of the pond, further purifying the tail water of the pond culture, improving the pond culture environment and improving the economic benefit and the ecological benefit of the river crab culture.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A river crab circulating water intensive culture method is characterized in that: the method comprises the following steps:
(1) constructing an intensive culture pond: the intensive aquaculture pond comprises an aquaculture pond, an ecological channel and a purification pond, wherein the area ratio of the aquaculture pond to the ecological channel to the purification pond is (3-5): 1: 1, the total area is 20-30 mu; an overflow dam is arranged between the culture pond and the ecological channel, an undercurrent dam is arranged between the ecological channel and the purification pond, and purified water in the purification pond is used for production operation in the culture pond; planting waterweeds in the culture pond and laying culture net cages;
(2) crab spawn throwing: putting 400 crab seeds in the culture pond with the density of 100-; after the crab spawns are put in, 0.2-0.4 g/cubic meter of vitamin C is used for splashing in a full pool for three consecutive days;
(3) throwing in snails: throwing snails into the culture pond and the purification pond at one time, wherein the throwing density is 0.8-1.2 kg/m; beginning in the first ten days of 6 months, throwing snails into the culture net cage once every half month, wherein the throwing amount is 18-20 kg/culture net cage;
(4) putting the fish seeds: and in late ten days of 5 months, putting silver carps and bighead carps into the culture pond, the ecological canal and the purification pond in a ratio of 3: 2, the specification is 4-5 cm/tail, and the stocking density is 50 tails/mu.
2. The river crab circulating water intensive culture method according to claim 1, characterized in that: the water quality management of the culture pond specifically comprises the following steps: sprinkling 15 kg/mu of quick lime water in the whole pool once every half month; the microbial preparation is administered 1-2 times and the substrate modifier 1-2 times per month.
3. The river crab circulating water intensive culture method according to claim 1, characterized in that: the feed feeding is carried out in the culture pond, and the method specifically comprises the following steps: feeding special granulated feed for river crabs with the protein content of 40% -42% from the fourth day to the crab seeds, wherein the feeding amount of the feed is 4% -6% from the first 6 months, and gradually and properly increases along with the time; 7-8 months, the feed protein content is 30% -40%, and the feeding amount is 6%; beginning to fishing in the last ten days of 9 months, the feed protein content is 40 percent, the feeding amount is 8 percent, and the pumpkin and the corn are supplemented, and the feeding is carried out once every 2 days.
4. The river crab circulating water intensive culture method according to claim 3, characterized in that: and starting in 6 months, uniformly stirring the feed with 1% of the feed feeding amount of clostridium butyricum and/or lactic acid bacteria before feeding the feed each time, and then feeding the feed.
5. The river crab circulating water intensive culture method according to claim 1, characterized in that: and filter tanks are arranged in the dam bodies of the subsurface flow dam and the overflow dam, and one or more of filter sand stone, volcanic rock, coral stone and biological balls are placed in the filter tanks.
6. The river crab circulating water intensive culture method according to claim 1, characterized in that: the aquatic weed comprises one or more of waterweed, eel grass, water groundnut, water hyacinth and golden fish algae.
7. The river crab circulating water intensive culture method according to claim 1, characterized in that: the inside of aquaculture net case sets up cave, emulation pasture and water and bait platform, and the bottom sets up micropore oxygenation pipeline.
8. The river crab circulating water intensive culture method according to claim 7, characterized in that: the volume of a single box body of the aquaculture net cage is 5m, and 90 net cages are arranged in total.
9. The river crab circulating water intensive culture method according to claim 7, characterized in that: 200-300 river crabs are thrown into a single box body of the aquaculture net cage.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356760A (en) * | 2011-09-23 | 2012-02-22 | 中国水产科学研究院淡水渔业研究中心 | Method of constructing water circulating system for shrimp-crab pond culture |
| CN103070130A (en) * | 2013-01-30 | 2013-05-01 | 中国水产科学研究院淡水渔业研究中心 | System and method for purifying and circularly utilizing water in fish aquaculture pond |
| CN105613374A (en) * | 2015-12-31 | 2016-06-01 | 淮阴师范学院 | Male and female river crab separated pond culture method |
| CN105830977A (en) * | 2016-04-12 | 2016-08-10 | 中国水产科学研究院淡水渔业研究中心 | Breeding method capable of increasing proportion of superior commodity crabs |
| CN106305556A (en) * | 2016-08-24 | 2017-01-11 | 淮安市苏泽生态农业有限公司 | Organic ecological culture method for river crab pond |
| CN107396865A (en) * | 2017-07-24 | 2017-11-28 | 安徽华亿农牧科技发展有限公司 | A kind of method of combination submerged plant and biological floating bed combined breeding crab |
| CN108675552A (en) * | 2018-05-21 | 2018-10-19 | 湖南骁睿农业生态科技有限公司 | A kind of sink concentrates the scrap concrete and tail water administering method of cultured fishes |
| CN108812499A (en) * | 2018-06-11 | 2018-11-16 | 天津现代晨辉科技集团有限公司 | A kind of cultivation apparatus and its cultural method for simulating Australian Lobster growing environment |
| CN109699544A (en) * | 2019-02-18 | 2019-05-03 | 正丰源生物科技（苏州）有限公司 | A kind of Australia Big Lobster thermostatical circulating water cultivating system |
| CN209135161U (en) * | 2018-10-09 | 2019-07-23 | 洪泽鱼之源生物科技有限公司 | A kind of Ecology biological purification system for circulating water cultivation |
| CN110590061A (en) * | 2019-09-10 | 2019-12-20 | 浙江省淡水水产研究所 | Be suitable for ecological purification circulation system of inland freshwater aquaculture pond tail water |
| CN111099733A (en) * | 2019-11-27 | 2020-05-05 | 天津膜天膜科技股份有限公司 | Artificial aquatic plant unit, integrated device and use process |
| CN111742879A (en) * | 2020-07-17 | 2020-10-09 | 泰兴市江源农牧有限公司 | Oxygenation device for crab is bred |
| CN113508777A (en) * | 2021-02-03 | 2021-10-19 | 史团结 | Case is bred to crab and shrimp intelligence |
-
2021
- 2021-12-30 CN CN202111658294.3A patent/CN114208756A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356760A (en) * | 2011-09-23 | 2012-02-22 | 中国水产科学研究院淡水渔业研究中心 | Method of constructing water circulating system for shrimp-crab pond culture |
| CN103070130A (en) * | 2013-01-30 | 2013-05-01 | 中国水产科学研究院淡水渔业研究中心 | System and method for purifying and circularly utilizing water in fish aquaculture pond |
| CN105613374A (en) * | 2015-12-31 | 2016-06-01 | 淮阴师范学院 | Male and female river crab separated pond culture method |
| CN105830977A (en) * | 2016-04-12 | 2016-08-10 | 中国水产科学研究院淡水渔业研究中心 | Breeding method capable of increasing proportion of superior commodity crabs |
| CN106305556A (en) * | 2016-08-24 | 2017-01-11 | 淮安市苏泽生态农业有限公司 | Organic ecological culture method for river crab pond |
| CN107396865A (en) * | 2017-07-24 | 2017-11-28 | 安徽华亿农牧科技发展有限公司 | A kind of method of combination submerged plant and biological floating bed combined breeding crab |
| CN108675552A (en) * | 2018-05-21 | 2018-10-19 | 湖南骁睿农业生态科技有限公司 | A kind of sink concentrates the scrap concrete and tail water administering method of cultured fishes |
| CN108812499A (en) * | 2018-06-11 | 2018-11-16 | 天津现代晨辉科技集团有限公司 | A kind of cultivation apparatus and its cultural method for simulating Australian Lobster growing environment |
| CN209135161U (en) * | 2018-10-09 | 2019-07-23 | 洪泽鱼之源生物科技有限公司 | A kind of Ecology biological purification system for circulating water cultivation |
| CN109699544A (en) * | 2019-02-18 | 2019-05-03 | 正丰源生物科技（苏州）有限公司 | A kind of Australia Big Lobster thermostatical circulating water cultivating system |
| CN110590061A (en) * | 2019-09-10 | 2019-12-20 | 浙江省淡水水产研究所 | Be suitable for ecological purification circulation system of inland freshwater aquaculture pond tail water |
| CN111099733A (en) * | 2019-11-27 | 2020-05-05 | 天津膜天膜科技股份有限公司 | Artificial aquatic plant unit, integrated device and use process |
| CN111742879A (en) * | 2020-07-17 | 2020-10-09 | 泰兴市江源农牧有限公司 | Oxygenation device for crab is bred |
| CN113508777A (en) * | 2021-02-03 | 2021-10-19 | 史团结 | Case is bred to crab and shrimp intelligence |
Non-Patent Citations (8)
| Title |
|---|
| 宋世民: "池塘规模化循环水生态养蟹技术", 《水产养殖》 * |
| 宋世民: "池塘规模化循环水生态养蟹技术", 《水产养殖》, vol. 34, no. 9, 1 September 2013 (2013-09-01), pages 28 - 30 * |
| 尹思慧 等: "养殖池塘尾水净化模式、技术设计与管理", 《水产养殖》 * |
| 尹思慧 等: "养殖池塘尾水净化模式、技术设计与管理", 《水产养殖》, vol. 42, no. 4, 1 April 2021 (2021-04-01), pages 70 - 73 * |
| 彭刚等: "池塘循环水养殖模式构建及净化湿地面积配比", 《水产养殖》, vol. 34, no. 01, 1 January 2013 (2013-01-01), pages 7 - 12 * |
| 徐桂珍 等: "《河蟹无公害养殖技术》", 安徽科学技术出版社, pages: 57 - 58 * |
| 爱心梦想: "江苏地方标准DB32-淡水池塘循环水健康养殖三级净化技术操作规程https://www.docin.com/p-1920950876.html", 《豆丁网》 * |
| 爱心梦想: "江苏地方标准DB32-淡水池塘循环水健康养殖三级净化技术操作规程https://www.docin.com/p-1920950876.html", 《豆丁网》, 11 May 2017 (2017-05-11), pages 1 - 9 * |
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