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73results about How to "Increase emergence" patented technology

Method for realizing ecological larval culture on rapana venosa

The invention relates to a method for realizing ecological larval culture on rapana venosa. The method is characterized by comprising the following steps of: firstly selecting a pond which is convenient in water exchange, takes lithoherm and stone bottom as a substrate and is in the size of 2-5Mu; then placing mature rapana venosa with the length of 7-10cm into the pond in the quantity of 100kg per Mu, mating and spawning after the rapana venosa eats ruditapes and mussel for 2-3 days, when enough oocysts are obtained, removing the rapana venosa away, incubating the oocysts for 20-22 days at the water temperature of 20-25 DEG C to obtain planktonic larva, growing the planktonic larva by eating the planktonic larva in the pond, starting to throwing polyethylene corrugated plate adherence ortile under the condition that the water temperature is 22-25 DEG C after 15-16 days, sticking benthic diatom and the planktonic larva onto the polyethylene corrugated plate or tile, transfigurating the planktonic larva of the rapana venosa into young spiral shell after 5-6 days, growing the transfigurated young spiral shell by eating the planktonic larva and benthic diatom on the corrugated plate, wherein the survival rate of the transfigurated young spiral shell on the corrugated plate can reach more than 50%, and feeding small low-value bivalve to the young spiral shell with the length morethan or equal to 3mm. By applying the method provided by the invention, the defects that the survival rate is low and the larval yield is low as bait conversion is difficult and water is polluted when carnivorous fish mice are used as feed in indoor artificial larval culture can be overcome, and the larval yield is improved by more than 50% compared with the indoor artificial larval culture. Meanwhile, the production cost is saved as no bait is thrown into the pond, thus the method is environment-friendly, and the produced larval is strong.
Owner:OCEAN UNIV OF CHINA

Substrate for hatching Whitmania pigra Whitman spawns

InactiveCN101849530AImprove yield per muImprove adaptation to the environmentAnimal husbandryWhitmania pigraEconomic benefits
The invention provides a high-efficiency substrate for artificially hatching Whitmania pigra Whitman spawns and aims to provide a substrate for hatching Whitmania pigra Whitman with shorter incubation time, higher hatching rate and more concentrated seedling emergence compared with the conventional hatching technique. By using the substrate with the best moisture holding capacity, the hatching time can be shortened by 7 days compared with the conventional hatching time, the hatching rate is increased by 22.7 percent, and the seedling emergence is concentrated. The substrate not only is beneficial to factory management for hatching the Whitmania pigra Whitman, but also prolongs the feeding time of Whitmania pigra Whitman seedlings, the adaptive capacity of the Whitmania pigra Whitman to the environment and the survival rate are improved through ingestion, growth and energy storage of the Whitmania pigra Whitman seedlings as soon as possible, the per mu yield of the Whitmania pigra Whitman is increased indirectly, and the economic benefit of culturing the Whitmania pigra Whitman is increased. By using the substrate, the per mu yield of the Whitmania pigra Whitman can be increased by about 15kg indirectly; and based on 600 RMB/kg of the current market price, the economic benefit of the Whitmania pigra Whitman per mu is increased by 6,000 to 9,000 RMB.
Owner:NANJING AGRICULTURAL UNIVERSITY

Method for cultivating sweet potato seedlings through hotbed

The invention discloses a method for cultivating sweet potato seedlings through a hotbed. According to the method, the technology of converting light energy and electric energy to heat energy is adopted, the temperature control technology, a temperature control device and a communicated grid type thermal circulation system are integrally applied to sweet potato seedling cultivation, the requirement of sweet potato seedling cultivation at different stages for the temperature is effectively met, and the capacity for adapting to the low-temperature and less-sunshine weather is improved; compared with traditional heating methods such as a flame path heating method and a biological fuel heating method, the method is quick in temperature rise, reliable in temperature rise, uniform in overall hotbed temperature, small in temperature difference, capable of adjusting the temperature in time at different seedling cultivation stages, easy and convenient to operate, and capable of saving energy and labor and reducing cost; the thermal circulating path that during seedling cultivation conducted through a traditional plastic greenhouse, heat can only penetrates from the surface of the hotbed to the potato layer step by step is changed, the upward sunny side and the downward dark side of the hotbed where potatoes are planted are heated at the same time through hot air circulating in the surface of the hotbed and communicated grid type air guide grooves, the air flow and the air temperature around the dark side of the hotbed where the potatoes are planted are changed, differentiation of adventitious buds on the dark side is promoted, and output of the seedlings is improved.
Owner:LUOYANG ACADEMY OF AGRI & FORESTRY SCI

Intelligent cooling system for aquaculture pond

ActiveCN106172173ASignificant effect on growthAchieve early listingClimate change adaptationPisciculture and aquariaEcological environmentEngineering
The invention discloses an intelligent cooling system for an aquaculture pond. The intelligent cooling system comprises support piles, a top curtain bracket, a top net curtain, a lower curtain bracket, a lower net curtain, a plurality of water distribution pipes, a filtering device and an automatic temperature control spraying system, wherein the support piles are arranged on pond ridges on the periphery of the aquaculture pond; the top curtain bracket and the lower curtain bracket are successively supported and covered on the water surface of the pond through the support piles; the top net curtain and the lower net curtain are respectively paved on the top curtain bracket and the lower curtain bracket; the water distribution pipes are arranged under the top curtain bracket; a plurality of spray nozzles are arranged on the horizontal sections of the water distribution pipes; the spray nozzles are used for spraying under the effect of the power supplied by high-pressure pumps arranged at water supply ends of the water distribution pipes; the high-pressure pumps are arranged in the filtering device. In high-temperature season, the system provided by the invention can control the water temperature at 25-28 DEG C, the water temperature difference between upper and lower layers is less than 1 DEG C, the average value of dissolved oxygen of the upper and lower layer water is maintained above 4mg/L and the excellent ecological environment is created for oviposition, oogenesis and incubation of crayfish.
Owner:FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE

Method for cultivating young rapana venosa in rapana venosa artificial breeding

The invention relates to a method for cultivating young rapana venosa in rapana venosa artificial breeding. The method is characterized in that firstly, after rapana venosa larvae with the size larger than 1200 micrometers and to be metamorphosed through attachment are collected, then placed in a container containing 10L-12L of a 0.2%-0.3% KCI seawater solution and steeped for 6 hours to 8 hours, so that the rapana venosa larvae is directly metamorphosed without attachment and the young rapana venosa is obtained; secondly, the young rapana venosa is placed in a floating net cage with the length of 5m-6m, the width of 2m-3m and the height of 0.3m-0.4m and made of a polyethylene screen with 60 meshes to 80 meshes, the size of the floating net cage is determined, and the four sides of the floating net cage have the buoyancy force; thirdly, the rapana venosa is fed on oyster paste twice to three times every day, the water level is kept low when feeding is conducted, the floating floating net cage is sunk to the bottom of the pool, bait sunk to the bottom of the floating net cage and attached to a base is eaten by the young metamorphosed rapana venosa, and after feeding is conducted for 3 hours to 4 hours, water is added, the water level rises, the floating net cage is floated, the bottom of the pool is absorbed, and therefore feces and the residual bait remaining on the bottom of the pool are thoroughly cleaned. According to the method for cultivating the young rapana venosa in rapana venosa artificial breeding, the problems that according to a method for indoor rapana venosa breeding, the use ratio of the fed carnivorous oyster paste bait is low and water is prone to pollution are solved and due to the fact that the residual bait and the feces are cleaned in time, water is not polluted, the young rapana venosa lives in water with high quality from beginning to end, the survival rate of the young rapana venosa is high, the breeding amount is improved by over 60%, and the cultivated young rapana venosa is strong.
Owner:OCEAN UNIV OF CHINA

Cinnamomum burmanni fast-growing optimal cultivation method

The invention discloses a cinnamomum burmanni fast-growing optimal cultivation method, comprising the following steps: (1) performing cinnamomum burmanni seed selection and stratification treatment; (2) making a seedbed and performing seed disinfection, accelerating germination and sowing; (3) performing seedbed management; (4) transplanting cinnamomum burmanni seedlings and interplanting artemisia annua; (5) performing field management and pest control; and (6) transplanting and delivering out of nursery. According to the invention, interplanting and seedling culture are creatively performedon cinnamomum burmanni and artemisia annua, and therefore, insect damage in the seedling stage of cinnamomum burmanni is reduced, and the disease resistance capacity of the root system of cinnamomum burmanni is improved; by creating the cinnamomum burmanni seed treatment method, seed germination percentage and seedling robust degree are improved; by applying self-produced nutritious base fertilizer, optimal nutrition basis is provided for fast-growing cultivation of cinnamomum burmanni; and finally, cinnamomum burmanni nursery stocks planted by adopting the technical route disclosed by the invention is obviously alleviated in pest and disease damage, and both seedling output per mu and seedling quality are promoted.
Owner:张亮

Method and device for ecologically breeding rapana venosa seedlings in pond

The invention discloses a method and a device for ecologically breeding rapana venosa in a pond. The method for ecologically breeding the rapana venosa in the pond comprises the following steps of a standardized culture pond is selected firstly; a large purse seine ecological system is erected, wherein the closed large purse seine ecological system is built in the pond; parent rapana venosa is selected; rapana venosa parent shellfish are temporarily reared in a mesh cage, and male and female rapana venosa parent shellfish are mated to produce yellow chrysanthemum petal-shaped egg bags; the egg bags are collected and hatched; when rapana venosa larvae are bred to reach the four-spiral-layer initial larvae, a corrugated plate is placed at the bottom of the large purse seine ecological system, and scallop strings are tied, so that benthic organisms are attached, the four-spiral-layer larvae of the rapana venosa are subjected to post-attachment and metamorphosis to form young rapana venosa, the young rapana venosa grows by using the attached benthic organisms as food, and the young rapana venosa is collected until the breeding specification is reached. The method for ecologically breeding the rapana venosa in the pond aims at the technical problem of rapana venosa seedling raising, a new seedling raising mode is developed according to food chain research under natural ecology of the rapana venosa, meanwhile, the seedling raising cost is reduced, and the method conforms to the green, ecological, healthy and environment-friendly development concepts of aquaculture.
Owner:OCEAN UNIV OF CHINA

Culture method of mesona chinensis

The invention discloses a culture method of mesona chinensis. The method comprises the following steps of S1, seed seedling culture; S2, land selection and land preparation; S3, transplantation; S4, field management; S5, harvesting; and S6, seed remaining. The culture method of the mesona chinensis provided by the invention has the advantages that during the seed seedling culture, the culture of the seed seedlings with high quality and no diseases is facilitated, so that the survival rate of the seed seedlings after the transplantation reaches 98 percent or above; the shortening of the seedling germination period is facilitated; the seedling germination is advanced; the regular and strong seedlings are ensured; the seedling germination quantity is great; the black mulching film is used forcovering a ridge surface; the moisture preservation effect is good; the number of watering times is reduced; the cost is reduced; the income is improved; during the transplantation, semi-mechanical operation is used; the transplantation efficiency is high; the time and the labor are saved; the culture quality is safe; the quality is high; stability and controllability are realized; the normalizedlarge-area planting can be realized; the yield of dry products of the mesona chinensis per mu can reach 600 to 700 kg; the gum content reaches 1.52 to 1.68 g / 100g; the polysaccharide content reaches0.092 to 0.108 g / 100g; the quality is effectively improved; the yield is high; the benefits are high.
Owner:河源市南领大健康产业开发有限公司

Mixed breeding method for spotted maigre and large yellow croaker

The invention relates to an artificial mixed breeding method for spotted maigre and large yellow croaker in marine aquaculture industry, and belongs to the technical field of marine culture. The breeding method includes the following steps, firstly pond-separated breeding maturation accelerating and parturition hastening of parent fish; secondly, same-pond breeding of spotted maigre and large yellow croaker fry; and thirdly, fry separating that's carried out through siphonage after the fry grows to be 2 to 3 cm in length. The pond-separated breeding maturation accelerating and parturition hastening of parent fish includes the maturation accelerating of the spotted maigre and the maturation accelerating of the large yellow croaker, and both the maturation accelerating of the spotted maigreand the maturation accelerating of the large yellow croaker include parent fish breeding and gonad maturation accelerating and parturition hastening. The same-pond breeding of spotted maigre and large yellow croaker fry includes same-pond hatching of the fertilized eggs of the spotted maigre and the large yellow croaker, prelarva prior period growing management, prelarva later perior growing management, postlarva period growing management and water quality regulation and control. 1.5 kg of fertilized eggs of the spotted maigre and the large yellow croaker are thrown into a mud pond of 32m<2>,and 696, 7000 juvenile fishes of 2 to 3 mm are bred at last, and the breeding rate per unit area is 2300 / m<2>, as a result, the utilization rate of the breeding pond is greatly improved and the breeding cost is reduced.
Owner:MARINE FISHERIES RES INST OF ZHEJIANG

Large-specification cultivation method of sargassum thunbergii seedlings for proliferation in nursery of kelp bed

The invention discloses a large-specification cultivation method of sargassum thunbergii seedlings for proliferation in a nursery of a kelp bed. The method comprises the following steps: (1) putting algal reef to which sargassum thunbergii seedlings are attached in the nursery of the kelp bed; (2) promoting robustness of the sargassum thunbergii seedlings in the nursery: a, adjusting nutritional salt: supplementing phosphorus nutritional salt in an impound water area in the nursery in a low astronomical spring tide period; b, controlling distributing density: uniformly distributing algal reefin the nursery, and controlling the separation distance of the algal reef at 5-10 cm; and c, thinning periodically: keeping the density of the sargassum thunbergii seedlings on the algal reef at 3-5/cm<2>; and (3) discharging the sargassum thunbergii seedlings out of the nursery in batches by way of selecting the algal reef for proliferation and supplementing the algal reef. In the process of constructing the kelp bed in the intertidal zone manually, nursery construction can be used for producing large-specification seedlings for proliferation in a centralized manner efficiently, so that the stable and sufficient seedling supply for proliferation is achieved to meet the demand on large-specification seedlings for proliferation in the kelp bed construction process, so that construction of the kelp bed is supported.
Owner:MARINE BIOLOGY INST OF SHANDONG PROVINCE
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