30 results about "Plagiognathops microlepis" patented technology

The invention discloses a method for artificially breeding Plagiognathops microlepis, belonging to the field of aquacultures. The method comprises the steps of stocking in the earlier stage, stocking in the later stage, carrying out artificial induced spawning and un-sticking fertilized ovum. The protein content in parent fish compound feed in the stocking process is 26-34%. The charging amount in the stocking process in the later stage is 3-5% of the weight of parent fishes in a pool. The artificial induced spawning medicine is a composition of PG (pituitary gland), LRH-A2 (luteinizing hormone releasing hormone A2) and 0.7% of sodium chloride solution. The fertilized ovum is un-stuck by using yellow mud slurry. According to the method disclosed by the invention, a scientific parent fish artificial culturing and proper artificial medicine induced spawning technology is adopted, therefore, the oestrous rate of parent fishes of Plagiognathops microlepis is up to 95% during 18 h, the artificial induced spawning rate is 95%, the artificial fertilization rate is 95%, and the artificial fry breeding effect is obvious.

The invention discloses a method for adjusting the water quality of an eel breeding pond with net cages. The method comprises the following steps: breeding plagiognathops microlepis outside cages, using probiotics preparations, replacing the net cages with large-mesh net cages, putting particles for purifying substrate, and sterilizing water in the net cages. According to the invention, a biological regulation method, a physical regulation method and a chemical regulation method are used for improving the water quality of the eel breeding pond with the net cages, the water quality is excellent and stable, water is not required to be changed in the breeding process, main chemical and physical indexes are all in reasonable ranges, 1 L of water inside and outside the net cages contains less than 0.2 mg of ammonia nitrogen, less than 0.1 mg of nitrite, less than 0.05 mg of hydrogen sulphide, and larger than 5 mg of dissolved oxygen, and the transparency of the water is 35-40 cm.

The invention relates to a method for increasing breeding yield and benefit of pond mainly for breeding grass carps. The method includes that the grass carps are bred mainly, silver Prussian carps, megalobrama amblycephala, silver carps and bighead carps and plagiognathops microlepis are bred secondarily, and only the grass carps need to be fed during feeding. Different fishes are complementary in eating habit and low in competitive eating relation and are positioned in different ecological niche spaces, so that water body space is utilized fully. Fingerlings of a same variety and different in specification are bred in a same pond, large-specification fingerlings can be fished out for selling after reaching commercial specifications through feeding for a period of time, and some small-specification fingerlings (summerlings) are supplemented at the same time, so that rotation of fishing and releasing is realized; after a breeding period is finished, the fingerlings supplemented in the middle of breeding can serve as fingerlings of commercial fishes of the next year, so that relay-type breeding is formed. Vaccines are injected to the grass carps to prevent diseases, so that survival rate is up to higher than 95%, consumption of fishery medicine is reduced, and safety is guaranteed. By feeding green grass, feed cost is lowered greatly, and feed cost is saved by 30-40%; fish meat quality is better.

The invention discloses a method for cage cultivation of myriophyllum spicatum and belongs to the fields of water environmental protection and water ecological reconstruction. The myriophyllum spicatum is planted in a suspension cage and light requirements in water can be met through adjustment of suspension depth. The suspension cage comprises floating bodies and a cage which are connected through ropes. The method includes the steps: arranging the suspension cage in a water body with water depth exceeding 1.5 meters; inoculating the myriophyllum spicatum starting from March each year; breeding plagiognathops microlepis or silver todarades in the cage; monthly measuring change of water transparency from April to October each year and adjusting the suspension depth according to the water transparency; harvesting the myriophyllum spicatum during October and November each year. By the method, the myriophyllum spicatum can fixedly grow on a bottom substrate of the cage, the myriophyllum spicatum can be prevented from being chewed and eaten by herbivorous fishes, infringement of stormy waves upon plants can be resisted, and an introducing problem of the myriophyllum spicatum is solved.

The invention discloses a farming method for a squaliobarbus curriculus adult fish, which comprises the following steps: 1, performing manual disinfecting for a farming pool by quicklime before the squaliobarbus curriculus fingerlings are put into the pool, freezing and drying the farming pool, pouring water into the farming pool, and applying fermentation organic fertilizer to cultivate water quality; and 2, putting the squaliobarbus curriculus fingerlings into the farming pool, feeding artificial diet, and then putting freshwater shrimps and plagiognathops microlepis fingerlings into the farming pool to be mixed with the squaliobarbus curriculus fingerlings. According to the method, due to the adoption of the method, not only is the cultured adult fish large in size and high in standard, but also the adult fish survival rate is high and the acre yield is high; with suitable breeds for mixing with the squaliobarbus curriculus fingerlings and the reasonable artificial diet, the disease-resistant rate and survival rate of the squaliobarbus curriculus adult fish are improved, and accordingly, the standard and weight of the adult fish are effectively improved, and the acre yield is also improved.

The invention discloses a culture method for plagiognathops microlepis, and belongs to the field of aquaculture. The culture method comprises the following steps: 1. selecting a large reservoir which is up to 2-2.5 m in water depth, and 3.5 m locally, and of which a lot of alga and decaying plant are grown at the bottom, putting chubs, bighead carps and grass carps in the water each mu (a unit of area, equal to 0.0667 hectares) according to the rated amount, and then putting 100-150 fries of plagiognathops microlepis in the water; 2. feeding the fishes with feed, as the staple food of plagiognathops microlepis comprises sapropel, decayed scraps and alga, only feeding a little of self-prepared plagiognathops microlepis dedicated feed, wherein the daily feeding amount is 1-1.5% of weight of fishes; 3. managing the water quality, in the culture cycle, strictly managing the water quality, and always keeping the water quality standards of fertile, live, softness and clearness; 4. disease control: spraying crystal dipterex in the whole reservoir at the fixed period, and the spraying the dipterex again on the next day. The culture method is simple, convenient, feasible, low in culture cost, good in culture effect and the like, and can culture the plagiognathops microlepis commercial fishes with high quality and good taste.

The invention discloses a plagiognathops microlepis fish and sturgeon intercropping method, which comprises the following steps of firstly performing disinfection treatment on a cement culture pond and waiting for releasing plagiognathops microlepis fish fry after disinfection; during the period after the plagiognathops microlepis fish fry is released before sturgeon fish fry is released, not feeding feedstuff to the plagiognathops microlepis fish fry, and partitioning the periphery of a food platform by using meshes about five days before the sturgeon fish fry is bred; releasing the sturgeon fish fry and breeding the sturgeon fish fry in a greenhouse; transferring the sturgeon fish fry bred in the greenhouse to deepwater net cages in a reservoir for marketable fish breeding; and finally scientifically breeding the sturgeon fish fry until marketable sturgeon comes into the market. According to the method, a single greenhouse perennial drainage breeding method is combined with a deepwater net cage breeding method in the reservoir, and a breeding mode of intercropping plagiognathops microlepis fish is adopted, so that the purpose that residual feeds, excrement of sturgeon and lichen generated in a pond are eliminated is achieved, so as to reduce the cost of marketable sturgeon breeding and the waste of environment and resources.

The invention discloses a method for cooperatively controlling microcystis aeruginosa and purifying water quality by using Plagiognathops microlepis, hyriopsis cumingii, Bellamya aeruginosa and calamus, and belongs to the technical field of water quality purification. The method comprises the following implementation steps: 1, selecting a specific eutrophication water area; 2, putting the hyriopsis cumingii into a net bag of a continuous ecological floating bed; and 3, throwing the Plagiognathops microlepis and the Bellamya aeruginosa into the water respectively. The method is simple and practical, can control the microcystis aeruginosa on upper, middle and lower layers of the water and microcystis aeruginosa hypopus in bottom mud and achieves an effect of purifying the water quality; various types of organisms are added, so the biological diversity of the water is improved and balance of a water ecological system is promoted; the hyriopsis cumingii, the Bellamya aeruginosa and the Plagiognathops microlepis are caught, so a certain economic value is achieved; and the calamus can be harvested at fixed period and can be used for feeding animals or serve as paper-making raw materials, so secondary pollution is avoided.

The invention relates to an acrossocheilus fasciatus breeding method based on a breeding pond and a paddy field tail water purification and utilization system. The system comprises the breeding pond and a paddy field, wherein a fish stopping net is arranged in the breeding pond, the area of the paddy field is more than 80 times the area of the breeding pond, a sedimentation pond is arranged in thepaddy field, and the area of the sedimentation pond is 1.5-2 times the area of the breeding pond; and shrimp ditches are also arranged in the paddy field and are used for breeding silver carp, bighead carp, plagiognathops microlepis and crayfish in the paddy field. The acrossocheilus fasciatus is bred in a breeding pond on the upper part of the fish stopping net, residual baits and fish manure sink into the bottom of the pond through the fish stopping net and enter the sedimentation pond along with water flow, and large-particle substances in the residual baits and the fish manure are precipitated in the sedimentation pond, and are convenient to collect for farmland use; small granular materials enter the paddy field and the shrimp ditches along with the water flow, and can be eaten by the plagiognathops microlepis and the crayfish; and nitrogen and phosphorus which are easily dissolved in the water body can be absorbed by growth of rice and waterweeds, so that breeding tail water isfully purified. On the one hand, the invention provides the acrossocheilus fasciatus breeding method, and on the other hand, the standard discharge of the bred tail water can be ensured.

The invention discloses a method of cooperatively controlling microcystis aeruginosa by plagiognathops microlepis, hyriopsis cumingii and bellamya aeruginosa, belonging to the technical field of water treatment. The method specifically aims to treat a water area with indexes of nitrogen, phosphorus, COD (Chemical Oxygen Demand) and BOD5 (Biochemical Oxygen Demand) meeting certain requirements. By adopting the method disclosed by the invention, microcystis aeruginosa in upper, middle and lower layers and microcystis aeruginosa hypopus in the bottom layer in a water body can be cleaned to increase the biodiversity of the water body, thereby facilitating balance of the ecological system of the water body. Meanwhile, hyriopsis cumingii, bellamya aeruginosa and plagiognathops microlepis are fished, thus having certain economic values. The method disclosed by the invention has the advantages of simple structure, reasonable design and simplicity and feasibility.

The invention discloses a culture method of Thai Marble Goby, which comprises the following steps: (1), quicklime is used for disinfect a cultivating pool artificially before Thai Marble Goby is placed in the pool, and 250 kg to 500 kg of organic fertilizer is applied in each mu to cultivate water; and (2), fingerling of Thai Marble Goby is put in the pool, after that, freshwater shrimp and fingerling of Plagiognathops microlepis are put in to pool to be cultured with the fingerling of Thai Marble Goby. The culture method of Thai Marble Goby has the advantage that adult fish cultured through the method not only is large in size and high in specification, but also is high in survival rate and acre yield. According to the method provided by the invention, appropriate polyculture breeds are cultured and reasonable artificial feed are adopted to raise Thai Marble Goby, so that the specification and the weight of Thai Marble Goby are increased greatly, and then the acre yield of adult fish is improved.

The invention discloses a substrate ecological crucian pond culturing method and relates to the technical field of aquatic product culture. The method comprises the following steps of building a substrate ecological crucian pond culturing system, breeding crucian, managing culturing and catching fish products, wherein the first step comprises substeps of pond preparation, substrate set, pond interc-breeding group formation. Compared with a traditional culturing mode, life habits of cultured fishes are employed and substrate is arranged in the pond to build substrate ecological crucian pond culturing method; a problem of water quality degradation due to high density of culture can be effectively controlled, so crucian can be less attacked by diseases; inter-breeding fish substrate foods can be provided by the substrate, so cost is reduced; benefits can be increased for inter-breeding fish products; greener and healthier ecological breeding model can be achieved; and high quality of crucian and Plagiognathops microlepis can be realized.

The invention discloses a fattening fodder for breeding plagiognathops microlepis. The fattening fodder is characterized by being prepared according to the following steps: step A, treatment of cardamine hupingshanesis; step B, treatment of duckweeds; step C, treatment of zizania latifolia leaves; step D, treatment of water hyacinth; step E, batching; step F, mixing; step G, extrusion; and step H, drying. The fattening fodder disclosed by the invention is low in price and rich in protein, various vitamins, trace elements and the like; especially, the content of selenium in the fodder is high, so the fodder satisfies the growth habits of the plagiognathops microlepis. The fattening fodder can be used for artificially feeding the plagiognathops microlepis healthily in batches to increase the amount of growth.

Provided is a new method for preventing and controlling moss to culture river crabs. The special point is that the method comprises cleaning up and disinfecting, moderately fertilizing water in an early stage, planting multi-variety aquatic plants, changing a margaryamelanoides putting method, stocking plagiognathops microlepis in a matched manner, moss dying after chemicals are used for three days when little moss is found in water, and other processes. Using the above technical scheme can realize the new method for preventing and controlling moss to culture river crabs. The method is simple in operation and good in effect, and is especially suitable to be used for culture the river crabs in large area, and the method effectively prevents and controls growth of moss.

The invention relates to a system for breeding acrossocheilus fasciatus and purifying and utilizing tail water. The system comprises a culture pond and a rice field. The system is characterized in that 1, a horizontal fishing net is installed in a breeding pond; 2, the area of the rice field is 80 times more than the area of the breeding pond, a sedimentation pond is arranged in the rice field, and the area of the sedimentation pond is 1.5-2 times the area of the breeding pond; shrimp ditches are also arranged in the rice field and are used for breeding silver carp, bighead carp, plagiognathops microlepis and crayfish. The acrossocheilus fasciatus is placed in a breeding pond on the upper portion of the fishing net, residual baits and fish manure sink into the bottom of the pond through the fishing net and enter the sedimentation pond along with water flow, and large-particle substances in the residual baits and the fish manure are precipitated in the sedimentation pond, so that the residual baits and the fish manure are convenient to collect and are supplied for farmland use; small granular materials enter the rice field and the shrimp ditches along with the water flow, and can beeaten by the plagiognathops microlepis and the crayfish; and nitrogen and phosphorus easily dissolved in a water body can be absorbed by growing rice and waterweeds, so that the breeding tail water is fully purified. On the one hand, the invention provides a method for breeding the acrossocheilus fasciatus, and on the other hand, it can be ensured that the discharged breeding tail water can reachthe standard.

The invention discloses a freshwater lake ecological alga control method which comprises the following steps: (1) setting up a net fencing region; (2) setting up an isolation region, wherein emergent aquatic plants are transplanted in the isolation region and the transplanting density is 4 to 6 plants per square meter; (3) putting in filter feeding fishes, wherein the ratio of the filter feeding fishes to omnivorous fishes is 2:1. The method disclosed by the invention is simple and easy to operate, has strong maneuverability, has no secondary pollution and prevents algal bloom by mixed culture of the filter feeding and omnivorous fishes; fragments, alga, zooplankter and the like in each layer of a water body are caught; alga content is reduced; the water body environment is more completely purified; the emergent aquatic plants are convenient to adsorb N and P and reduce the eutrophication degree of the water body; in addition, xenocypris davidi bleeker and plagiognathops microlepis are naturally bred without being put in every year, density control is implemented in a harvesting manner of catching big fishes and leaving small fishes in the later period, the operation cost is reduced, and caught fishes also can bring certain additional economic benefits.

The invention discloses a method for relay breeding of Ictalurus punctatus. The area of a pond ranges from 40 mu to 150 mu. The method mainly comprises the steps of pond preparation, fry stocking, water quality management, aquatic product and fry capturing and the like. According to the method, large-size Ictalurus punctatus fingerlings, silver carp fingerlings and plagiognathops microlepis with proper density and specification are stocked, the ecological niches of the pond are scientifically constructed, environment-friendly water purifying agents such as polyferric sulfate, 20% potassium hydrogen persulfate and EM bacteria are reasonably applied to optimize the water quality of the pond, the occurrence rate of aquatic diseases is reduced, the use amount of fishery medicine is reduced, and the pond ecological environment and aquatic product quality safety are guaranteed; and in the breeding period of recent one year, commodity Ictalurus punctatus with high uniformity and sold specifications and other matched fishes are sold in an off-peak mode, the pond space and production efficiency are fully utilized, and the comprehensive economic benefits and ecological benefits of the pond are remarkably improved.