69results about How to "Reduce cannibalism" patented technology

The invention relates to a method for cultivating the Krause's crayfish in pool, which comprises that preparing the pool, cultivating parental crayfish, cultivating the parent crayfish by itself and cultivating the seed. The pool preparation comprises that 1, cleaning the pool; 2, embedding organic fertilizer into the bottom and stacking the fertilizer at the slope; 3, filling water; 4, planting grass; 5, arranging tubular hidden material. And the cultivation of parental crayfish comprises that 1, disinfecting the parental crayfish; 2, cultivating the parental crayfish; 3, strengthening the cultivation. The self-cultivation of parental crayfish comprises that crossing, laying eggs, and cultivating the seed. The seed cultivation comprises that 1, spraying biological organic fertilizer into the water; 2, putting artificial feed; 3, cultivating the mature parental crayfish; 4, taking off. The invention can cultivate benthic organism to feed the parental crayfish, seed or the like, to improve efficiency and reduce pollution.

The invention relates to a method for cultivating the Krause's crayfish, comprising that cleaning the field, cultivating the parental crayfish, cultivating the seed and taking off, cultivating the rice. The invention is characterized in that the cultivation of parental crayfish is processed in the surrounded groove, which has an anti-jump device and near the ground arranges seed holes at 0.8-1.2cm diameter; the crayfish seed can pass through the holes into the field. The invention can pre-cultivate the parental crayfish to avoid damaging the rice. And the invention can obtain many benthic fauna as the bait of parental crayfish, seed, or the like.

The invention discloses a frog culturing method comprising steps of building a homocentric-square-shaped integral frog pool, culturing with a combination of artificial forge, selecting seed frog naturalized for years, stocking the seed frog, managing seed frog breeding, culturing tadpoles and culturing young frogs and adult frogs. With the construction of the homocentric-square-shaped integral frog pool, seed frog selection, feeding and special feeding management mode for tadpoles and young frogs, the employment of the integral frog pool combining a tadpole pool, a young pool and an adult pool and the selection of frogs naturalized for years and fed by artificial forges for generations as the seed frogs, frog output and culturing efficiency can be improved by the use of an artificial forge feeding method during the feeding process.

A mixed forage for the later-phase larvae of scylla is prepared proportionally from protein, fat, fibers, Ca, P, and phosphatide through pulverizing, sieving, mixing, adding peptone, fish slurry and edible oil, mixing, modifying, granulating, drying and cooling.

The invention discloses a cherax quadricarinatus breeding method. The method comprises the following steps of pond selection, pond disinfection, breeding water treatment, compound bacteria culture, shrimp fry stocking, feed feeding and pond management. According to the breeding method, by reasonably arranging a shelter, breeding compound bacteria, adding EM bacteria and traditional Chinese medicine powder into feed and the like, breeding is conducted under the condition of not using hormones or antibiotics, the method has the advantages of being ecological, environmentally friendly, less in investment, low in cost and convenient to manage, and the cherax quadricarinatus obtained through breeding is high in survival rate, high in growth speed, healthy and strong in physique, high in diseaseresistance and high in stress resistance.

The invention discloses a harmonia axyridia larva indoor industrialized culturing method. The method comprises the steps that eggs which are stored in 1-4 days from a cold storage, the eggs are gathered and placed in a hatching box to be hatched, initially hatched larvae are placed in culturing boxes to be cultured; a layer of filter paper is laid at the bottom of each of the culturing boxes, andthe culturing boxes are internally provided with silk-shaped filler to expand the moving range of the larvae; sufficient acyrthosiphon pisum is regularly placed in each culturing box, and horsebean seedlings with cut roots are fixedly placed until the larvae become chrysalides; the feeding of the acyrthosiphon pisum to the harmonia axyridia which becomes a chrysalis is stopped, and the emergence harmonia axyridia is cultured in an insect culturing cage for production. According to the method, industrialized culturing of the harmonia axyridia in the whole developing period is achieved to ensurethe uniformity of the hatching time, the pupation time and the emergence time, convenience is provided for manual concentration management culturing, the killing rate among the harmonia axyridia in the harmonia axyridia larva period is reduced, the duration of egg production of the harmonia axyridia is improved to obtain the adult harmonia axyridia with uniform developing duration and high-yieldeggs, and time and space of industrialized harmonia axyridia propagation are saved.

The invention discloses a breeding method for improving the survival rate of Australian freshwater lobsters. The breeding method comprises the following steps of pond selection, pond sterilization, breeding water treatment, young lobster stocking, compound bacterium culture, feed putting and pond management. By reasonably arranging shelters, placing tourmaline, stocking compound bacteria, feedingdifferent feeds at different growth stages and adopting other modes, breeding is performed without hormones and antibiotics, the breeding method has the advantages of being environmentally friendly, free of pollution, small in investment, low in cost and convenient to manage, bred Australian freshwater lobsters are high in growth speed, healthy and strong in physique condition and strong in disease-resistant capability and stress resistance, and the survival rate reaches 95% or above.

The invention discloses an application method for ecologically breeding macrobrachium nipponensis and Odontobutis obscura in a pond by utilizing an artificial ecological base. The method comprises the following steps of (1) pond selection; (2) forming of pond artificial ecological base layout and biological film; (3) fry stocking; (4) feedstuff feeding; (5) water quality regulation and control and daily management; (6) fishing of grown macrobrachium nipponensis and grown Odontobutis obscura. Compared with the prior art, according to the method, the water quality of the pond can be kept good and stable, water does not need to be replaced in the whole breeding period except in the season with higher water temperature, new water is added to increase the water level, no breeding wastewater is drained, and the ecological benefits are obvious; the biocenosis such as microorganisms and algae on the ecological base can provide the suitable habitat for shrimp seeds and the Odontobutis obscura; the Odontobutis obscura is utilized for catching and feeding on the weak and sick shrimp seeds and autumn seeds bred in august; the breeding disease rate of the macrobrachium nipponensis is reduced; the out-of-pond specification and yield of the grown macrobrachium nipponensis are improved, and the economic benefits are obvious.

The invention discloses a method for ecological culture of Australia crawfish. The method comprises the following steps of 1 pond selection, 2 pond disinfection, 3 culture water treatment, 4 crawfishlarva stocking, 5 feed feeding and 6 pond management. The culture method is ecological, environmentally friendly, low in investment and cost and convenient to manage, and the obtained Australia crawfish has the advantages of being high in survival rate and growth speed, robust in physique, high in disease resistance and stress resistance and the like.

The invention relates to a method for cultivating Hemifusus tuba with a net cage in a hanging way. In the method, a single-layer cage-shaped cultivating cage tool consisting of a cage plate (1) with the diameter of 45-50cm and a polyethylene net (2) with the mesh size of 0.5-1.5cm is used for cultivating young Hemifusus tuba with the average height of 30-40mm and the average weight of 2-3g in a hanging way and 10-15 young Hemifusus tuba are cultivated in each cage. The method comprises the following steps of: filling the young Hemifusus tuba in the cultivating cage tool; hanging in a hanging pond at a water layer with the depth of 0.7-1.4m, wherein the distance between every two adjacent cages is 0.2-1m; feeding the Hemifusus tuba with fresh oyster with shell every 10 days; cleaning the net cage before feeding, cultivating until harvesting time of the Hemifusus tuba. The method disclosed by the invention improves the living environment of the Hemifusus tuba to the maximum extent and reduces the diseases caused by the pollution such as residues, wastes and the like, and reduces the cannibalism phenomenon, thereby effectively improving the survival rate and the growth speed of the Hemifusus tuba; simultaneously, the method can reduce the feeding quantity, the feeding time and the labor intensity.

The invention discloses a freshwater shrimp blocking-net-type intercropping method and belongs to the technical field of freshwater aquaculture. A blocking-net-type freshwater shrimp and trionyx sinensis intercropping mode is adopted, and aspects like culture pond building, fry stocking, culture management and feed quality are comprehensively improved; freshwater shrimp and trionyx sinensis are separated by using a blocking net for respective culture, and freshwater shrimp small in body size can enter a deep water area to serve as living food for trionyx sinensis, so that feed consumption of trionyx sinensis can be lowered, and culture cost of trionyx sinensis is lowered while culture quality of the same can be improved; culture density of freshwater shrimp can be controlled effectively, cannibalism is reduced, and improving of culture quality and yield is facilitated. Ecological niche characteristics of different organisms like alga, water plants, grey chub, freshwater shrimp and trionyx sinensis are taken into consideration comprehensively, a proper intercropping proportion is set, ecological balance of a culture pond is maintained, and water quality is adjusted, so that the method is an environment-friendly and high-efficiency culture mode and suitable for large-scale popularization and application.

The invention relates to a larval micropterus salmoides food conversion domestication method. The method is characterized by comprising the following steps of (1) selecting and setting a domesticationpool; 2) preparing before stocking; 3) putting fries; 4) food conversion domestication, specifically, I, feeding live freshwater rotifers; II, after 1-3 days, mixing frozen rotifers with water for feeding; III, after 1-2 days, carrying out feeding through mixed feed, wherein the mixed feed is obtained by mixing the frozen rotifers with water and artificial compound granular baits according to themass ratio into paste, and sequentially reducing the number of the frozen rotifers according to the proportion of 1: 1, 0.75: 1 and 0.5: 1 until the frozen rotifers are completely replaced by the artificial compound granular baits; and IV, after 1-2 days, carrying out feeding for 1-2 days through the artificial compound granular baits; 5) daily management; and (6) putting fries into a pond, namely transferring the successfully-fed micropterus salmoides fries to an outdoor soil pond for culture, wherein the culture baits are all artificial compound granular baits. According to the method, through continuously adjusting the proportion of the mixed feed for food conversion domestication, the larval micropterus salmoides fries are induced to be fed with the artificial compound granular baitsin an initial stage, the feeding cost is reduced, and the survival rate in the domestication and food conversion process is increased.

The invention discloses a living body transportation method of Octopusochellatus seedling breeding and releasing, and relates to the technical field of the living body transportation of the marine product culture. Rice hulls are used as a substrate, the rice hulls are softer, and cannot hurt the Octopusochellatus young seedlings in the shaking process. The rice hulls can be suspended in the seawater so as to form countless enclosed spaces, so the probability of cannibalism of the Octopusochellatus young seedlings is reduced. The use water for raising and transporting the Octopusochellatus young seedlings is the seawater in which suspended particles are removed, and the used seawater for raising and transporting the Octopusochellatus young seedlings is the same as the seawater of the natural spawning site sea area of Octopusochellatus seedling breeding and releasing, so the Octopusochellatus young seedlings can adapt the natural sea area environment as soon as possible, the effect of the environmental change to the survival rate of the Octopusochellatus seedlings is reduced, and the survival rate of the seedlings is improved. The method has the advantages of no anesthetics, no food quality and safety risk, no gradient cooling, no effect to the survival rate of the Octopusochellatus young seedlings, cheap cost, security and environmental protection, and high survival rate of the seedlings.

The invention provides a grouper fry breeding box. The breeding box includes a breeding box. The upper end of the breeding box is open and has a cover at one end. One end of the cover is hinged to thebreeding box. The breeding box has a plurality of partition plates. The partition plates divide the breeding box into a chamber I, a chamber II and a chamber III, and the upper ends of the partitionplatesare provided with mounting grooves. Both sides of each mounting groove are respectively provided with drilling holes penetrating through both sides of each mounting groove, and the drilling holes located in both sides of each mounting groove are arranged parallel to each other. Rectangular insertion plates are inserted into the mounting grooves, and the insertion plats are provided with a plurality of matching holes penetrating throughboth sides of the insertion plates. The matching holes and the drilling holes are misaligned.When the insertion platesare pulled up, the matching holes canbe communicated with the drilling holes. The inner walls of one sides of the chamber I and the chamber II are respectively fixedly provided with a plurality of micro-pumps. The micro-pumpsare provided with horizontally-disposed water outlet pipes, and the water outlet directions of the water outlet pipesare toward the drilling holes. Thegrouper fry breeding box has a simple structure and ingenious designand reduces the fratricidalbehavior of the grouper.

The invention discloses a cultivating method of marmoratus fish fries. The cultivating method includes using chlorella liquid to reduce noxious substance in water body under the light-control, temperature-control and water-control conditions, intensifying water flea, increasing nutrition of fries and advanced fries, reducing death rate during a transformation period from the fries to the advanced fries, utilizing shells to form a shielded place on the bottom of the water body and sargassum algae to form a shielded place from the bottom of the water body to water surface to hide the fries and the advanced fries, avoiding killing and devouring during period of the fries and the advanced fries, and increasing survival rate. The survival rate of the marmoratus fish fries can reach 29% or so, and cultivating cost of the marmoratus fish fries can be reduced by domesticating the marmoratus fish fries with compound feed to enable the marmoratus fish fries to adapt the compound feed.

The invention discloses a method for breeding disease-free and high-yield lobsters. The method is characterized by comprising the steps of building of a breeding pond, disinfection of the breeding pond, breeding of planktons, throwing of lobster seeds, throwing of lobster baits, and daily management. According to the method for breeding the disease-free and high-yield lobsters, the environment of the lobster pond can be improved, and the method has the advantages that the occurrence of diseases of the lobsters is prevented, the survival rate and the yield are increased, the reproduction speed is high, the meat is fresh and delicious in flavor, the content of protein is high, the lobsters are green and safe, and the yield is increased.

The invention discloses a river crab and cray polyculture method. The river crab and cray polyculture method comprises the following steps: cleaning up of a pond, planting of water plants, throwing in of snails, stocking of seeds, throwing in of feeds and final-period management. Scientific management is adopted to reduce the morbidity, so that the survival rate and the yield are improved; and the river crab and cray polyculture method has favorable economical benefits.

The invention discloses a barley pest breeding method. The method comprises the following steps: preparation of feed, preparation of a breeding box, preparation of an incubator, feed casting, egg collection and hatching as well as feeding management. When barley pests are bred with the method, mutual interference and killing under the condition of social feeding can be reduced effectively; through strict control of feed and breeding density, the percentage of pupation of the barley pests is increased while the nutrients required by growth of the barley pests is guaranteed, the economic benefit is increased, and the excellent barley pest breeding method has the advantages of low labor intensity, high percentage of pupation, low cost and the like.

The invention relates to a pan-type fry culturing method for Procambrus clarkii, in particular to completing the process of breeding Procambrus clarkii fries in a pan-type container, belonging to the technical field of aquiculture. The method is characterized by comprising the following four steps of fry breeding pan selection, fry breeding preparation, parent shrimp stocking and management and shrimp fry breeding. Only one female shrimp or ovigerous shrimp is put in a fry breeding pan, and therefore, the specification of bred shrimp fries is regular, the cannibalism rate is reduced, and the shrimp fry survival rate is improved. The fry breeding pan is put in a dark fry breeding room, and therefore, the development rate of the sex gland of the female shrimp is high; the fry breeding operation is convenient, and the fry breeding efficiency is higher than that of the traditional fry breeding mode. The pan-type bred fries are not influenced by the change of the external climate; the shrimp fries hatched out on the same day are raised under the same ecological condition, being beneficial to developing mass selection. The invention is suitable for being popularized and applied in domestic Procambrus clarkii breeding farms and scientific research departments.

The invention relates to a method for improving ricefield eel culture production by utilizing a stacked hidden object, which is characterized by comprising the following culture steps of (1) constitution of the stacked hidden object: connecting net pieces and hidden object frames to form the stacked hidden object, connecting frame reinforcing steel bars to form the hidden object frames, and dividing the stacked hidden objects into three to ten layers which are in supporting connection through supporting reinforcing steel bars and are provided with partition nets; (2) a culture method: placing the stacked hidden object into a ricefield eel culture pond; and (3) planting water hyacinth, alternanthera philoxeroides and waterweeds with coverage rate accounting for 60% of the pond area in the ricefield eel culture pond so that ricefield eel can dwell in the stacked hidden object in a layered mode to improve culture density. The method is low in cost, convenient in use and capable of providing relatively independent micro-habitats for the ricefield eel, greatly reducing rate of cannibalization of the ricefield eel and improving culture survival rate, culture production and benefits.

The invention provides a method for constructing an Exopalaemon carinicauda reciprocal backcross family. The method includes the following steps: (1) parent shrimp selection; (2) parent shrimp mating; (3) cultivation and breeding of F1 offspring seeds; (4) parent-child backcross; and (5) cultivation and breeding of backcross progeny offspring seeds. Male and female Exopalaemon carinicauda parent shrimps which are distributed naturally or bred artificially and have excellent characters are selected, and the reciprocal backcross family can be acquired through completely-artificial breeding, aquaculture and parent-child mating; the success rate of construction of the reciprocal backcross family can reach 75%, and can provide material and technique support for quantitative character genetic analysis, near-isogenic line construction and back cross breeding of the Exopalaemon carinicauda.

The invention discloses a fish culture feeding device comprising a bait box, a bait casting plate driven by a casting motor, an integrated control box, float balls and at least one trigger rod connected with the integrated control box through an interchangeable universal head. The trigger rod is provided with a thin film pressure sensor. An acceleration sensor and an integrated control module are arranged in the integrated control box. The integrated control module is composed of a control circuit comprising a single-chip microcomputer. Foraging touch behaviors of fish are determined by the acceleration sensor and the thin film pressure sensor, and the results are fed back to the single-chip microcomputer. With the control of the single-chip microcomputer, the bait casting motor casts baits in a timed and quantified way, such that bait casting adequacy and uniformity are realized. Fish individual growing condition is uniform, intraspecific cannibalism possibility is reduced, and survival rate is improved. The control device and control method realize timed and quantified uniform bait casting based on fish feeding habits.

The invention discloses an industrialized method for breeding large-size fish fries of perches. The industrialized method comprises the following steps: 1, breeding small fish fries outside cages; 2,carrying out early-stage breeding; 3, carrying out post-period breeding; when body lengths of perch fries reach 2cm, starting to train feeding; firstly, stopping feeding for 24h; then gradually replacing artemia nauplii with 0# perch compound feed with the protein content higher than 45 percent according to the ratios of 20 percent, 50 percent, 80 percent and 100 percent; finishing feeding training within 2 to 3 days according to a principle that a replacement speed is slow firstly and then fast, and then slow; 4, intensively breeding. The breeding method for the perch fish fries, disclosed bythe invention, can be used for intensively training the feeding to finish bait conversion, and a condition that the perches kill each other is reduced; the size of the bred fish fries is uniform andthe survival rate of the perch fish fries can reach 60 percent or more; the survival rate of the fish fries is improved to the greatest extent and the disadvantages in an existing perch fish fry breeding technology are made up; the method has very great actual application value.

The invention discloses a large-scale breeding and egg hatching method of adult Pasha worms, which comprises the following steps: (1) building a breeding room: setting the breeding room to be a flowing water environment and placing attachments for eggs in the breeding room; (2) carrying out breeding and spawning of the adults: when the wings of the adults after eclosion are bloodshot and tanned and the adults are free to fly, putting the adults in the breeding room in the step (1), or transferring the adults to a breeding cage, providing a nutrient solution to the adults, and after the adults mate and soon lay egg masses on the attachments, transferring the egg masses to a hatcher; and (3) hatching the eggs: hatching under the conditions that the temperature is 25-30 DEG C, the environment humidity is 70-80% and the illumination is 12:12 and timely transferring the larvas to a breeding box after the hatching is completed. The invention aims to technically realize large-scale breeding and efficient egg hatching of the adult Pasha worms.

The invention discloses an artificial breeding method for wild Spanish mackerel. A rearing pond is internally provided with other fries with the density of not less than 10000 / m<3> during the period from hatching to opening the mouth; the Spanish mackerel fries in a hatching pond are fished out and poured into the rearing pond during the period from 24 hours before the hatching of the prelarva to 12 hours after the hatching of the prelarva; the pouring quantity of the Spanish mackerel fries is 500-10,000 / m<3>; the water temperature of the rearing pond is controlled within 18-25 DEG C and the salinity thereof is controlled within 1.7-2.5%; the cultivation management is carried out according to the cultivation condition of other fries; when other fries are reduced to less than 10,000 / m<3>, the other fries are poured in time so as to lead the density of other fries to be controlled more than 10,000 / m<3>; after the cultivation for 20-30 days, the Spanish mackerel fries with the length being more than 3cm which are artificially raised can be obtained. Therefore, the Spanish mackerels eat other fries, the carnage between the Spanish mackerel fries is reduced, the cultivation rate is improved and can achieve 10-30%, and the conditions are created for the artificial cultivation in large scale.

The invention relates to a cultivating method of young snails in hemifusus tuba artificial young snail growing, and belongs to the technical field of aquaculture. The cultivating method comprises thespecific steps of starting to cultivate benthic diatom for the initially hatched young snails to ingest food in an outdoor cement pool the third day to the fifth day after hemifusus tuba parent snailsgrow oocysts, wherein adherance of the benthic diatom is white PVC plastic corrugated tiles; washing and disinfecting a young snail growing pool the second day to the third day before the young snails are hatched out of the oocysts, uniformly laying the adherance fully grown with the benthic diatom at the bottom of the young snail growing pool and loading the oocysts to a plastic frame to be putto the young snail growing pool to be hatched; sifting the size through a sifting frame the ninth day to the tenth day after the young snails are hatched, and pool dividing cultivation is conducted. The cultivating method is easy and convenient to operate, the technology is easy to grasp, requirements for the young snails who just come out of film to be opened for bait can be met, the mutual slaughter of the young snails can also be effectively lowered, the survival rate of young snail cultivation in hemifusus tuba artificial young snail growing is increased by a large margin, and the growth of the young snails is promoted.

The invention belongs to the technical field of crayfish breeding, and discloses a method and a device for large-scale breeding of crayfish in a net cage of a greenhouse. The method comprises the steps of building the greenhouse on a cement pool; building the net cage in the cement pool, and planting water hyacinth around the net cage; selecting parent crayfish in August and September, wherein theweighs of the parent crayfish are 40-50g, feeding mainly with animal feed, supplementing with pellet feed, and controlling the feeding amount to be 3-6% of the total weight of the bred crayfish; after the incubation of the parent crayfish is completed, removing the net cage and the parent crayfish in the net cage; continuing to breed the floating plants and animals through the fertilizer water inthe pool so as to provide astaxanthin for ingestion of the crayfish; after crayfish larvae are incubated in the cement pool for two weeks, collecting by using a small-mesh ground cage and then transferring into a big pond for further breeding. The method increases the water temperature during breeding, thus promoting the gonad development of the parent crayfish, shortens the embryo hatching time,and enabling the emergence of the seedlings to be synchronous as much as possible; furthermore, the net cage is used for isolating the parent crayfish and the crayfish larvae after incubation, so that the cruel killing of the crayfish larvae by the parent crayfish is reduced, the survival rate of the crayfish larvae is 90% or above, and the large-scale breeding is realized.

The invention discloses a sea water net cage hanging culture method for lobster. The method comprises the following steps: preparation before culture is performed: 1) a lobster culture site is selected, the water temperature of the lobster culture environment is 15-30 DEG C, the salinity is 23-34, the pH is 8.0-8.6, and the dissolved oxygen content is 6 mg / L, 2) a lobster pond is constructed, and3) aquatic grasses are planted at the bottom of the pond; technical measures before seedling releasing are as follows: the pond is thoroughly cleaned, water which is filtered by a 40-60 mesh screen isintroduced to the pond after the pond is thoroughly cleaned, the water depth reaches to be 50-60 cm, plankton is cultivated by fertilization, the fertilization ratio of nitrogen to phosphorus is 2:1,1.5 kg / mu of calcium superphosphate is applied, 90-100 kg / mu of fermented and decomposed livestock and poultry manure is first applied, the transparency of the pond water reaches to be 30-40 cm after7-10 days, and the water quality is brown or green; and the structure and setting of the net cage are as follows: the net cage is prepared from a 20-40 mesh net cloth, the net cage has a length of 10m and a width of 3-5 m, a calcium-plastic board with a width of 15 cm is sewn along the inner side of the upper edge opening of the net cage, the net cage is fixed with bamboo poles and placed at a position which is away from a water inlet of the pond for 2 m, the bottom of the net cage is attached to muds, the bottom layer of the net cage is paved with manure soils with a thickness of 20 cm, andthe water depth of the net cage is kept to be 30-50 cm.

The invention discloses an industrial circulating-water larva breeding method for freshwater shrimps in freshwater. The industrial circulating-water larva breeding method adopts a parent breeding, larva hatching and larva breeding sectional type breeding mode and comprises the following steps: breeding parent freshwater shrimps in a system capable of realizing circulation of an aquaculture water body, wherein male parent freshwater shrimps and female parent freshwater shrimps are mixed and bred together until egg-carrying freshwater shrimps are formed after copulation and egg laying of the male parent freshwater shrimps and the female parent freshwater shrimps; screening the egg-carrying freshwater shrimps in different embryonic development periods, and placing the egg-carrying freshwatershrimps in the same or similar embryonic development periods together for breeding and hatching so as to obtain larvae, wherein the whole larva hatching stage is carried out in a system capable of realizing circulation of the aquaculture water body; when the larvae are in a floating state in 3-5 days after being hatched, stocking the larvae into a treated aquaculture pond for breeding with nutrients and water, wherein submerged plants are planted at the bottom part of the aquaculture pond for the larvae to inhabit and avoid enemies; and when the larvae are 1.5-2.0 cm long, separating the larvae into different ponds. The industrial circulating-water larva breeding method provided by the invention can improve the larva breeding quality of the freshwater shrimps; and the freshwater shrimps can appear on the market 2 months earlier.

The invention discloses a two-purpose pond for breeding and cultivating procambarus clarkii, and relates to the technical field of procambarus clarkii breeding. The two-purpose pond comprises a breeding pond, a culture pond and a round pipe; the depth of the breeding pond is smaller than that of the breeding pond, and the breeding pond is fixedly arranged and close to the culture pond; a slope isfixedly arranged at the bottom of the breeding pond, and the lower end of the round pipe is vertically and fixedly arranged on the slope; the upper end of the round pipe is provided with an opening, and the upper end surface of the round pipe is flush with the upper end surface of the culture pond; the lower part of the round pipe is provided with a through hole, and the breeding pond communicateswith the culture pond pass through the round pipe; therefore, the defects that existing procambarus clarkii mixed culture can cause disputes and cannibalism among procambarus clarkii at different growth stages, and thus, low yield of the procambarus clarkii is caused are overcome, and a breeding process and a culture process of the procambarus clarkii can be separated to increase the yield of theprocambarus clarkia, and the disease resistance of the procambarus clarkii is improved.