393results about How to "Improve the survival rate of breeding" patented technology

A loach fish fry artificial cultivation method is characterized by comprising spawning and hatching process, 7-day (d) fish fries cultivation and 15 d fish fries cultivation, wherein the spawning and hatching process comprises the following steps: parent fish rearing and selecting; artificial induction; fertilization process; and fertilized egg hatching process. A loach fish fry reinforced cultivation method comprises the following steps: adopting indoor flat surface slot to cultivate the 7 d fish fries and the 15 d fish fries, reinforced culturing fish fries, stocking loach fish fries to a pond after the 7 d fish loach fish fries and the 15 d fish fries grow up, and thereby greatly improving fish fry indoor cultivating survival rate and fish dries pond descending survival rate. A result of an experimental research shows that: the indoor cultivating survival rate of the 7 d fish fries reaches up to 87.8 percents, the pond descending survival rate reaches up to more than 30 percents, the 15 d fish fries reaches up to 92.6 percents, and the pond descending survival rate reaches up to more than 50 percents. The loach fish fry artificial cultivation method is scientific and rational, easy to implement, and good in practicability. By using loach fish fry artificial cultivation method, the fish dries pond descending survival rate can be greatly improved, and good economic benefit can be obtained.

The invention relates to a healthy crawfish feed and a preparation method. The healthy crawfish feed is prepared by selecting various organic raw materials according to a formula, thus providing feed base for producing high-quality crawfish; especially, natural fish meal, earthworm meal, silkworm chrysalis meal, spiral shell meal and bone tankage are added to provide a high-quality animal protein source for the high-quality crawfish, thus enabling the nutrition ingredients of the feed to be more reasonable; due to addition of Chinese herbal medicines, the immunocompetence of the high-quality crawfish is favorably enhanced, the fish flavor of the crawfish is improved, the disease infection possibility can be reduced, and the shell powder can provide calcium for manufacturing crawfish shells; the feed prepared by adopting the formula is complete in nutrition, good in palatability, easy to digest, and fast to absorb, and the crawfish is hale and healthy to grow, strong in disease prevention capability, and high in culture survival rate; and the preparation method is wide in raw material sources, simple and convenient as well as easy to operate, reasonable in formula, and low in cost.

The invention aims at providing a whole-genome-selection-based method for breeding improved disease-resistant fish varieties, thereby overcoming defects in the traditional breeding technology, providing a molecular breeding method for cultivation of improved disease-resistant high-yield fish varieties, solving a problem of lack of a whole-genome selection method in the existing fish breeding industry, providing a technical means for improved disease-resistant fish variety breeding of the fish breeding industry, realizing upgrading of the fish breeding technique, and promoting rapid development of the fish breeding industry. The disease-resistant fish offspring obtained by using the method provided by the invention has the enhanced disease-resistant capability. An experiment result demonstrates that the survival rate from infection and breeding survival rate of a disease-resistant fish offspring that is bred based on the whole genome selection method are higher than those of the control group by 20% to 30%. Using the method provided by the invention, the improved disease-resistant fish breed can be bred rapidly and efficiently; and the disease-resistant capability and breeding survival rate of fish can be enhanced. Therefore, the method provided by the invention has the great application value and broad promotion prospects in the fish breeding industry.

The invention provides an ecological breeding method for silky fowls. The method simulates a wild natural growing status and adopts an orchard stocking mode; a game fowl is raised in each fowl crowd to enhance the movement amount of the fowl crowd; natural ingestion of the silky fowls is combined with a pollution-free feed to feed and Chinese herbal medicines are used for preventing diseases. The silky fowls provided by the invention are basically in a wild mode and have good meat quality; the nutrition is abundant and the survival rate is high; the disadvantages that the density of confined silky fowls is great, the movement amount is less, the meat is loose, the fat content is high, the prevalence rate is high, the medicine dosage is great, and the like are greatly improved.

The invention provides a breeding method for intermediate breeding of Anguilla marmorata fries. The breeding method comprises the steps of intermediately breeding the Anguilla marmorata fries in a cement breeding pond in the early stage and breeding the Anguilla marmorata fries in an earthen pond in the later stage. A net box and water flow boosters are arranged in the process of intermediately breeding the Anguilla marmorata fries in the cement breeding pond in the early stage, and the Anguilla marmorata fries are bred in the net box, so that the metabolites of the Anguilla marmorata fries can be conveniently filtered and deposited, the survival environment is optimized, and the breeding survival rate is increased; the four water flow boosters are arranged at the four corners of the cement breeding pond, so that water flow circulates anticlockwise, a flowing water environment is created for the Anguilla marmorata fries, Anguilla marmorata can frequently move in the flowing water environment, the bait intake speed and the growth speed of the Anguilla marmorata are increased, and the survival environment of the Anguilla marmorata is optimized; the Anguilla marmorata fries are bred for 1-2 months in the cement breeding pond and fed with blood worms in the early stage and eel powder 7 days before leaving from the pond, after the Anguilla marmorata fries are fed with the eel powder, the Anguilla marmorata fries reaching 1 g per fry are transferred into a half mu (1 mu is 1 / 6 of acre) of the earthen pond for later breeding of the Anguilla marmorata fries, and the unqualified Anguilla marmorata fries are still concentrated in the cement breeding pond and continue to be fed with the blood worms; and during the process of breeding the Anguilla marmorata fries in the earthen pond, the Anguilla marmorata fries are mainly fed with the eel powder in the early stage and occasionally fed with the blood worms, all the Anguilla marmorata fries reaching 5 g per fry are fed with the eel powder, and the Anguilla marmorata fries reaching 10 g per fry are transferred into an Anguilla marmorata growing pond for breeding.

The invention relates to an indoor intensive artificial breeding technique of Yangtze River Coilia ectenes, which comprises the steps of Coilia ectenes parent fish enhanced breeding, artificial spawning induction, artificial hatching and fingerling breeding. The indoor intensive artificial breeding technique of Yangtze River Coilia ectenes is characterized in that Coilia ectenes adult fish which is alternately cultured for three years by using seawater and freshwater is used as parent fish for the Coilia ectenes parent fish enhanced breeding, female parent fish individuals with clearly visible ovary outlines and softer inferior bellies and male parent fish individuals with milk white semen which flows out when the bellies are slightly pressed are selected for the artificial spawning induction, the female-male ratio is 1:3, the female parent fish and the male parent fish naturally mate for laying eggs and fertilization, temperature-controlled inflated hatching in still water is conducted to fertilized eggs, and the fingerling breeding comprises culture at four stages, wherein the culture at the first stage comprises the steps of temporarily culturing newly hatched fries from the time that fries are newly hatched to the time that the fries open mouths, the culture at the second stage comprises the step of culturing the fingerlings from body length being 3mm to body length being 20mm, the culture at the third stage comprises the step of culturing the fingerlings from body length being 20mm to body length being 30mm, the culture at the fourth stage comprises the step of culturing the fingerlings from body length being 30mm to body length being 40-50mm, and the fingerlings can be put in a pond for conventional culture after the body length of the fingerlings reaches 40-50mm.

The invention provides a bean pulp rainbow trout parr compound feed and a preparation method thereof. Every 100kg of bean pulp rainbow trout parr compound feed is manufactured by 10 to 15kg of steam fish meal, 45 to 55kg of full fat expanded soybean, 10 to 15kg of corn protein powder, 2 to 5kg of isolate soya protein, 3 to 5kg of beer yeast, 0.5 to 1.0kg of Squid paste, 0.5 to 1.0kg of betaine, 3 to 6kg fo flour, 1.5 to 2.5kg of soybean lecithin, 2 to 3kg of fish oil, 2 to 3kg of soybean oil, 0.3 to 0.5kg of methionine, 0.1 to 0.3kg of lysine, 0.3 to 0.5kg of Choline Chloride, 0.5 to 1.0kg of composite vitamin, 0.5 to 1.0kg of composite mineral salt and water. The invention aims at the digesting physiological characteristic during the parr period of the rainbow trout and solves the balancing problem of amino acid by optimizing and adjusting the prescription of the feed, and solves the problems of anti-nutritional factors and palatability by comprehensively using enzyme preparation and feeding promoting agent. The feed of the invention has the advantages of remarkably promoting the quick growth of the rainbow trout parr, improving the surviving rate of the rainbow trout parr, improving the digesting and absorbing rates of the rainbow trout parr on the feed, reducing the drainage of P and N, reducing the culturing cost, and the like.

The invention relates to flake-shaped feed for sea cucumber and a preparation method thereof. The ingredients in the feed and the ratios thereof are as follows: sargassum thunbergii dried powder 30%, fish meal 4.5%, fresh kelp 20%with 70% liquid water content, dusty yeast 5%, corn protein 8%, compound enzyme 0.5%, compound vitamin 1%, mineral salt 1%, water 10% and muddy sand 20% with grain diameter of about 100 micron. The preparation method comprises the steps of adding 50% water to the fresh kelp, grinding the kelp with water for 6-7 times through a stuff grinder, adding other ingredients for stirring uniformly after degumming, extruding the mixture of the kelp, the water and other ingredients through a bulking machine at a low temperature of 1-10 DEG C, slicing the mixture into 2mm thick, and drying. The feed in the invention can maintain the shape thereof for more than 24hr without shaping agent; the feed is 2mm thick so that the sea cucumber can easily get and eat the feed and feed consumption of 60% of powder feed is enough; the feed is rich in nutrition, thereby effectively improving the growth rate and the survival rate of the sea cucumber; water changing rate for the flake-shaped feed is only 50% of that for the powder feed, thus avoiding water pollution, reducing water consumption and curtailing production cost.

A compound feed for ovate pompano contains fish powder, puffed soybean dregs, peanut dregs, meat powder, inkfish gut powder, beer yeast, wheat flour, soybean lecithine, sea fish oil, vitamine composition and mineral composition.

The invention discloses a method for cultivating the sipunculus nudus in a pond. The sipunculus nudus is low in the level of the food chain, is high in stress resistance, is fast in growth, belongs to the local ecological plant formation, is stable in resources group, is high in natural distribution density, small in activities range, and is free of the phenomenon of long-distance migration, thereby being very suitable for the artificial cultivation. However, the current artificial culture is low in survival rate, growth speed and yield. According to the characteristics of the different growth stage of the sipunculus nudus, a proper growth cultivation environment is creased in a nichetargeting way, the pond intermediate cultivation technology of the sipunculus nudus is combined with the pond cultivation technology of the sipunculus nudus, the survival rate of the seeds is improved, the seedling quantity per unit area is increased, the artificial breeding quality is guaranteed, and the cultivating survival rate and the cultivating per unit yield are improved, so that the cultivating survival rate reaches at 85%, the cultivating per unit yield reaches at 215kg / mu, and the aim of the high-efficiency cultivation of the sipunculus nudus is realized.

The invention relates to a freshwater fish feed additive, in particular to a complex immunity reinforcing agent for a black carp. The immunity reinforcing agent for improving the stress resistance of a black carp comprises the following components in percent by weight: 10-20 percent of dangshen polysaccharide, 10-15 percent of isatis root, 15-20 percent of astragalus root polysaccharide, 5-10 percent of mangiferin, 5-10 percent of rose roxburghii tratt polysaccharide, 0.5-5 percent of vitamin C, 1-6 percent of vitamin E and 20-40 percent of wheat-middlings. The complex immunity reinforcing agent can be used as a feed additive for making up the defects presented by the black carp in the stress state, improving the stress resisting capacity of the black carp and the utilization rate of the feed, lowering the feed coefficients, reducing the damage caused by the stress, reinforcing the immunity of the black carp and increasing the survival rate.

The invention discloses freshwater shrimp ecological feed and a preparation method thereof. The ecological feed comprises the components of natural fish meal, earthworm powder, yellow mealworm powder, silkworm chrysalis meal, soybean cake powder, wheat bran, rice bran, yeast powder, carrot powder, flour, eggshell powder, shrimp shell powder, spirulina powder, radix astragali, radix isatidis, argy wormwood leaves, dried orange peel, fructus lycii, complex vitamins and an EM liquid. The preparation method comprises the steps of putting the above materials into a feed mixing machine according to the weight percentages, stirring for 40 minutes, granulating by an annular mold feed machine, drying, adding the EM liquid, and loading into bags after drying; and packaging. A formula provided by the invention is composed of a plurality of quality raw materials, and provides feed basis for producing quality freshwater shrimps. The feed prepared by the formula is comprehensive in nutrition and good in palatability, can be digested easily and absorbed fast; the freshwater shrimps grow strongly, have strong disease resistance and high culture survival rate. The freshwater shrimp ecological feed has wide available raw materials, can be operated easily and conveniently, and is reasonable in proportions and low in cost.

The invention belongs to the technical field of aquaculture and discloses a paddy field cultivation method for crayfish. The paddy field cultivation method is characterized by comprising the following steps of (1) paddy field preparation; (2) crayfish stocking; (3) feeding; and (4) breeding management, including the processes of (a) water quality control, (b) disease control, (c) overwintering management, and (d) catching of finished crayfish. The paddy field cultivation method for crayfish is aided by natural baits, such as hydrilla verticillata and living snails as foods for the crayfish, so that the breeding survival rate, nutrients and taste of the crayfish are improved; cyclic utilization of paddy field substances is achieved by adopting the natural bait of a paddy field ecosystem; and the breeding cost is also reduced.

The invention provides a river crab used immunopotentiator and preparation method, wherein the immunopotentiator is prepared from vitamin C, E, carotene-beta, bread yeast cell wall containing 30% beta-glucan, mannose, algin, licorice root, phosphatide and rice bran through solid raw material disintegrating, sieving, solid raw material mixing, phosphatide miscible liquid preparation, phosphatide miscible liquid spraying and drying.

The invention provides a breeding method of a low-salt-resistant line of blue crab. The breeding method comprises the steps of: based on blue crab which is artificially bred for multiple years and has excellent growth characters as a base colony, subjecting young crab of 100 days old to low-salinity stress experiment, and carrying out two generations of low-salinity stress breeding to screen low-salt-resistant line of blue crab, wherein the screened core breeding colony can be used for production and application after passage propagation. According to the invention, a quick growth colony is selected as the base colony, and the low-salt-resistant stress-resistant characters are aggregated in the blue crab base colony through low-salt-resistant breeding, thus the cultured new line has strong stress resistance, and is suitable for breeding in low-salinity areas, and the growth rate and breeding survival rate are significantly increased; and the method is simple and convenient to operate, and is applicable to breeding of the low-salt-resistant line of blue crab.

The invention discloses a feed for portunus trituberculatus miers, belonging to the field of feed for aquatic animal culture. The feed comprises the following ingredients in percentage by weight: 35-45% of fish meal, 10-18% of soybean meal, 5-8% of spent grains liquor of corn alcohol, 3-8% of beer yeast, 3-5% of shrimp shell meal, 15-25% of high protein flour, 3-5% of squilla protein plasma, 1-3% of phospholipid oil, 1-3% of refined fish oil, 1-3% of complex binding agent, 1-2% of compound mineral substance, 0.5-1.5% of compound vitamin, 0.2-0.4% of choline and 0.1-0.4% of edible salt. Compared with the prior art, the feed provided by the invention comprises reasonable ingredients, has comprehensive nutrition, is full of nutriments, has extremely strong food calling effect on the portunus trituberculatus miers, can meet the requirements for artificial culture of the portunus trituberculatus miers in ponds, improves the food intake, effectively prevents the phenomenon that the portunus trituberculatus miers clamps the food mutually, and has obvious effect on improving the culture survival rate of the portunus trituberculatus miers.

The invention relates to an artificial pavo critatus breeding method under a high-altitude environment. The artificial pavo critatus breeding method comprises the following steps: early young pavo critatus is obtained by a hybridization technology; by simulation and improvement of a production environment, the fertilization rate of seed pavo critatus is increased; a special pavo critatus incubation machine is designed; an artificial pavo critatus breeding technical flow is made; a standardized artificial pavo critatus breeding technical flow is customized. According to the artificial pavo critatus breeding method, the difficulties of low artificial pavo critatus breeding incubation rate and low survival rate in plateau areas are solved.

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.

The invention discloses a tilapia fry rearing method. The tilapia fry rearing method comprises the following steps: breeding parent tilapia fries which are bigger than nine-sieve, picking parent tilapias which are disease free, injury free, strong and good in sexual maturity to rear, hybridizing the female parent tilapias and with the male parent tilapias according to ratio of stocking, picking up roes, incubating the roes with flowing incubating water in an incubating tank, cultivating the roes by marking in bold, and cultivating fries. Oviposition period is shortened by about seven days, incubating rate is as high as 67.9%, fry survival rate is 89.6%, each female tilapia lays 6700 fries each year averagely, fry production rate is improved by 30%, and the sizes of the fries are uniform. By means of the tilapia fry rearing method, fries can be reared all through a year, a large amount of tilapia fries are reared and the tilapia fries grow fast and are strong in stress resistance. The tilapia fries reared in mass are born at the same time, gonad developments are synchronous, sizes are the same, characters are unified, and heredity purity is high. Moreover, the tilapia fry rearing method has the advantages that incubating period is short, incubating efficiency is high, inheritable characters are good, fertility is strong, and fries can be reared in an overwintering mode.

The invention, which belongs to the technical field of the aquatic livestock culturing, particularly relates to a four-level culture method of a lateolabrax japonicus pond. First-level cultivation, second-level cultivation, third-level cultivation, and adult fish cultivation are carried out on lateolabrax japonicus in a pond successively. A third-level cultivation pond is encircled by a net and a pond base in a pond; a second-level cultivation pond is encircled by a net and a pond base in the third-level cultivation pond; and a first-level cultivation pond is encircled by a net and a pond base in the second-level cultivation pond. According to the invention, with optimization of the culturing technology in a graded culturing mode, ways containing the culturing means like ecological mixed breeding are improved; the seedlings can be domesticated to eat food in a centralized mode and thus seedlings with uniform sizes can be cultivated; the yield of the fries can be improved; the average acre yield of the lateolabrax japonicus can be increased; and the comprehensive benefits of the lateolabrax japonicus culturing can be improved.

The invention discloses eco-nutritional compound feed for laying hens at an egg-laying peak and a preparation method of the eco-nutritional compound feed. The eco-nutritional compound feed for the laying hens at the egg-laying peak comprises components in percentage by weight as follows: corn, bean pulp, rice bran, calcium hydrophosphate, rock flour, baking soda, sodium chloride, soybean oil, compound trace elements for the laying hens, compound vitamins for the laying hens, 50% choline chloride, a bacillus coagulans preparation, a fructo-oligosaccharide preparation, an DL-methionine, compound enzyme for the laying hens, phytase, montmorillonite and zeolite powder. The nutritional requirement of the laying hens can be met, the immunity and the anti-stress capacity of the laying hens can be effectively improved, the disease rate is reduced, the egg laying rate is increased, the lasting time of the peak is prolonged, the quality of eggs is improved, the environment of henhouses can be improved, and the eco-nutritional compound feed is a novel laying egg feed product integrating nutrition, the anti-disease property, promotion of a high yield and pollution-free property.

Cultured Penaeus vannamei Boone has the advantages of high growth speed, strong adaptability and high yield and becomes one of the main cultured varieties in northern areas of China. (1) pond water color control: the ideal color of water for culturing the Penaeus vannamei Boone is yellow green or yellow brown formed by green algae or diatoms; the algae or diatoms are benign biocenosis in the micro-ecological environment of a pond and play a role of purifying water quality; (2) control of pond water pH value, dissolved oxygen and transparency: the pH value suitable for the Penaeus vannamei Boone is 7.8-8.5, but the peak value of 9.2 is generated at the middle and final stages culturing, and therefore, the pH value control is especially focused in the culturing process; the pH value is not suitable to be high, otherwise, the toxicity of ammonia nitrogen can be increased, thereby restraining the growth of the Penaeus vannamei Boone; (3) scientific bait casting: generally, low-cost iced fish cream or small shells are fed, and some formula feeds are also fed; the formula feeds can be manually compounded; the formula feeds contain the following components: 17 percent of fish meal, 40 percent of soya-bean cake, 28 percent of bran, 10 percent of wheat middling, 3 percent of bone meal and 2 percent of additive; and (4) pond patrol: the pond is patrolled in the morning, at night and in the midnight every day to observe the water color change and whether Penaeus vannamei Boone raise above water to breathe or not; the activity condition, the growth condition and the repletion rate of the Penaeus vannamei Boone are observed by adopting two methods of lamplight observing and spoon-net inspection so as to regulate the bait casting amount and decide whether to start an oxygen-enriching machine or not.

The invention relates to an artificial breeding method for African ostriches under a high-altitude environment. The method comprises the following steps that the environment adaptability of the African ostriches is improved by utilizing a 'hybridization technology'; the laying environment is simulated and improved to improve the fertilization rate of breeding ostriches; a dedicated African ostriches hatcher in a high-attitude area is designed; an artificial hatching technology process of the African ostriches is formulated; a standard artificial breeding technology process of the African ostriches is formulated; warm-keeping poultry sheds in an experimental group are transformed; a feed formula is innovated. The method solves the problems of artificial breeding of the African ostriches under the high-altitude environment.

The invention discloses an organic grass carp forage and a preparation method. The forage is characterized by comprising the following components by weight: 7%-10% of natural fish meal, 15%-20% of organic soybean cake powder, 10%-15% of organic wheat bran, 14%-18% of organic rice bran, 5%-8% of Typha angustifolia powder, 10%-12% of Leersia hexandra grass powder, 6%-10% of zizania grass powder, 3%-8% of yeast powder, 6%-10% of organic vegetable powder, 3%-5% of organic flour, 1%-3% of spirulina powder, 1% of Chinese herbal medicinal powder, 0.1% of EM bacteria, and 0.1% of brown sugar. The formula of the forage involves a plurality of organic raw materials, and provides a forage foundation for organic grass carp production. The organic grass carp forage prepared according to the formula has the advantages of comprehensive nutrition, good palatability, easy digestion and quick absorption. The forage can promote grass carps to grow robustly when it is applied to feed grass carps, which can have strong disease resistance and a high feed survival rate, so that the forage has very good effects on fingerling and adult fish feeding. The organic grass carp forage involved in the invention has the characteristics of wide raw material sources, easy and practical operation, reasonable proportioning, and low cost.

The invention discloses fermented soft pellet feed used for shrimp culture. The fermented soft pellet feed used for shrimp culture is obtained by fermenting feed raw materials with a zymophyte-enzymecompound preparation; and the feed raw materials comprise the following components in parts by weight: 3-15 parts of shrimp meal, 8-20 parts of fish meal, 10-30 parts of soybean meal, 3-15 parts of black soldier fly powder, 3-15 parts of shrimp shell powder, 3-15 parts of plasma proteins, 1-10 parts of silkworm chrysalis meal, 0-5 parts of water-soluble chitin, 1-10 parts of peanut meal, 5-20 parts of flour, 2-8 parts of potassium fulvate, 0-5 parts of fish oil, 0-5 parts of soybean oil, 0-5 parts of soybean phospholipid, 0.1-1.5 parts of calcium phosphate monobasic, 1-10 parts of a shrimp premix and 1-10 parts of a Chinese herbal medicine compound additive. According to the fermented feed, a method of pelleting before fermentation is adopted, nutrient substances of the raw materials are kept, and a digestive enzyme and active bacteria and fungi are added, so that the fermented soft pellet feed used for shrimp culture has the functions of significantly enhancing intestinal immunity ofshrimps and protecting livers and intestinal functions.

The invention discloses a male and female river crab separated pond culture method which enables male and female river crabs to be separated and adopts different culture modes in different culture ponds. The male and female river crab separated pond culture method ensures normal ingestion of the female river crabs, facilitates improvement of growing-out size of the female river crabs, promotes synchronism of river crab exuviation in the same ponds and facilitates improvement of the culture survival rate. Scientific feeding and management are performed according to different growth and development laws and nutritional demands of the male and female river crabs, a food coefficient is reduced, and the quality of adult crabs is improved. The crabs are caught and supplied to the market according to different mature times of the male and female river crabs, the reduction of the labor intensity is facilitated, crab hurts are decreased, and the culture and management level and economic benefits are improved.

The invention provides an industrialized ecological cultivation method of ribbonfish. The industrialized ecological cultivation method of the ribbonfish comprises the steps of (1) preparing cultivation facilities, (2) carrying out ecological cultivation, and (3) harvesting adult ribbonfish, wherein the average weight of the ribbonfish can reach 110-130g / piece, the ribbonfish is cultured for 16 months, and then the adult ribbonfish is harvested. The industrialized ecological cultivation method of the ribbonfish has the advantages that a greenhouse pond with an area of 2800 square meters is adopted for industrialized ecological cultivation of the ribbonfish, all indexes of the ribbonfish are controlled manually during cultivation, the water environment for the industrialized ecological cultivation is controlled manually, influence of the environment on the cultivation is reduced by means of circulation of materials based on the ecological balance rule and the energy flowing principle, and then a dynamic ribbonfish cultivation environment is created; the color of the body of the ribbonfish is bluish yellow which is close to the color of the body of wild ribbonfish, the ribbonfish cultivation cycle is shortened by more than one year, the protein content of the cultivated ribbonfish can reach more than 60%, the fat content of the cultivated ribbonfish can reach more than 29%, and the cultivated ribbonfish is rich in unsaturated fattyacid; the probability of occurrence of parasites during ribbonfish ecological cultivation is greatly reduced, and the survival rate of the cultivation is improved by 20%.

The invention discloses an effective prawn breeding pond with a dirt cleaning and discharging function. The effective prawn breeding pond with the dirt cleaning and discharging function comprises a breeding pond body, wherein an oxygenation pump is arranged in the breeding pond body; the bottom of the breeding pond body communicates with a blow-off pipe; grooves which are crossed are formed in thebottom surface of the breeding pond body; anti-escape nets are arranged at the upper ends of the grooves; high-pressure jet pipes are arranged at the edges of the insides of the grooves; and jet holes are uniformly distributed in the surfaces of the high-pressure jet pipes. The oxygenation pump is arranged in the breeding pond body, thus, oxygen can be provided for the breeding pond body at any time, the grooves which are crossed are formed in the bottom surface of the breeding pond body, thus, dirt can be intercepted on the way, the sewage discharge efficiency is improved, by the jet holes which are uniformly distributed in the surfaces of the high-pressure jet pipes, dirt can be effectively cleaned and discharged, a large amount of dirt which are cleaned and discharged from the groovescan be cleaned without dead corners, the dirt nearby the center of the pond is cleaned and discharged by a dirt collecting cover arranged in the center of the pond, the anti-escape nets are arranged at the upper ends of the grooves, and prawns can be prevented from escaping into the blow-off pipe arranged at the bottom of the center of the pond. The device is simple in structure, convenient to operate, high in breeding survival rate and suitable for being popularized on a large scale.

The invention relates to jujube tree branch cuttage reproduction pretreatment liquid. The jujube tree branch cuttage reproduction pretreatment liquid consists of the following raw materials in parts by weight: alpha-naphthylacetic acid, indoleacetic acid, rooting power, wicker leaching agent, washing wastewater, sodium nitrophenolate, p-chlorophenoxyacetic acid, a potassium permanganate solution, copper hydroxide, deltamethrin and ammonium phosphate. The pretreatment liquid has remarkable effects on the aspects of branch differentiation and rooting, root hair growth, sterilization and deinsectization as well as nutrition supply. On the basis of scientific experiments, the raw material proportion and dosage are controlled, so that the cuttage reproduction survive rate can be effectively increased.

Disclosed are a combined mandarin fish fries cultivating net cage and a using method. The combined mandarin fish fries cultivating net cage is characterized in that the net cag is rectangular, two net walls are added in the middle of the net cage to divide the net cag into three net cells, a first cell is made of 40-mesh bolting-silk net and is 2m*1m*1.2m in dimension, the net wall between the first cell and a second cell is a movable net wall convenient to demount, the second cell is made of a mesh with 0.3cm screen and is 4m in length and 2m in width, the combined cage of the first cell and the second cell is 5m in length and 2m in width, the net wall between the second cell and a third cell is a movable net wall convenient to demount, the third cell made of a mesh with 0.6cm screen and is 5m in length and 2m in width, and in this way, the combined net cage is 10m in length and 2m in width. With the combined mandarin fish fries cultivating net cage, frequent fishing of mandarin fish fries and changing of net cages are not needed during cultivation of the mandarin fish fries, damages to the mandarin fish fries are reduced, cultivation survival rate of the mandarin fish fries is improved, and labor intensity during cultivation of the mandarin fish fries is reduced.