19444 results about "Observed Survival" patented technology

A method for predicting a survival rate among individuals, where the survival rate depends in part on a responsiveness of emergency personnel, and the responsiveness of the emergency personnel depends in part on an amount of time taken to route an emergency call to a primary emergency response center, includes determining, by a computer system, a number of emergency calls initially routed to a primary emergency response center. The computer system determines a number of emergency calls initially routed to a secondary emergency response center that, in turn, routes the emergency calls to the primary emergency response center. The computer system calculates a survival rate amount individuals according to a function of the determined number of the number of emergency calls initially routed to a primary emergency response center and the number of emergency calls initially routed to a secondary emergency response center. The calculated survival rate is displayed on a terminal.

The invention discloses a hormone hydrogel rooting film, which is prepared by the steps of: swelling polyvinyl alcohol at normal temperature for 30min, and heating for completely dissolving polyvinyl alcohol to obtain a transparent liquid; cooling, adjusting the pH value of the solution with concentrated hydrochloric acid, adding glycerol and reacting to prepare a hydrogel liquid; and adding hormone to the hydrogel liquid and stirring. When in use, the hormone hydrogel rooting film is spread on the surface of a hard branch cutting shoot, so that a gel film is formed on the surface of the hard branch cutting shoot above the ground so as to achieve the purpose of reducing the moisture of the cutting shoot from dissipation, and a gel film is formed on the surface of the hard branch cutting shoot under the ground so as to keep a moisture state in soil and play a role of slowly releasing hormone to stimulate the rooting of the cutting shoot, thus the rooting critical stage of the hard branch cutting shoot is prolonged and the rooting survival rate of the hard branch cutting shoot is improved. The technical scheme disclosed by the invention is simple and convenient, high in raising seedling survival rate and significant in economic and social benefits, and saves seedling-raising investment by more than 10%.

The invention relates to a smart agricultural insect disease remote automatic diagnosis system. The system comprises an interaction system, an identification system and an insect disease database management system. The interaction system comprises an information acquisition system, a wireless communication system and an information display system; the identification system comprises a similarity comparison system and a remarkable feature extraction system; and the inset disease database management system comprises an insect disease picture database, an insect disease remarkable feature database and an insect disease diagnosis database. The smart agricultural insect disease remote automatic diagnosis system, based on images of crop growth conditions, through intersection operation of the image similarity and remarkable feature extraction comparison system and a machine learning algorithm of the identification system, can effectively improve the identification accuracy of an insect disease type. According to the insect disease type, the system provides an omni-directional diagnosis scheme so as to improve the survival rate and the quality of crops.

A probiotic composition essentially comprises 15 to 20 wt % of milk powder, 25 to 30 wt % of corn starch, 8 to 15 wt % of modified starch (capsul), 10 to 15 wt % of ethylcellulose, 5 to 15 wt % of bacterial broth, and 10 to 15 wt % of talc. The probiotic composition is microencapsulated to form a plurality of microencapsule coated with an acid-resistant enteric coating for improving the enteric acid-resistance, the probiotic survival rate, the antimicrobial property, the stability, the moisture-proof property, and the mobility of the probiotic composition preventing from coagulation in a moist environment and for being used as an additive applied to livestock feed.

The invention discloses a mixed plant culture medium and a preparation method thereof. The culture medium comprises peat and an agricultural and forest residue compositing fermentation medium, wherein the volume proportion of peat to agricultural and forest residue compositing fermentation medium is (30-50):(50-70). The mixed culture medium prepared by the method in the invention has the advantages of balanced nutrition, high nutrition component contents and stable physical property. The mixed culture medium prepared by the method in the invention is reasonable in nutrition structure and convenient for absorption of foliage plants and meets the growth requirement of the foliage plants, thereby improving the culture survival rate and viewing effect of the foliage plants.

The invention relates to aquaculture feed, in particular to litopenaeus vannamei feed without fish meal. The feed comprises an animal protein source, a plant protein source, a fat source raw material, a sugar source raw material, composite vitamin, composite mineral salt, Chinese medicine compound preparation, premix and additives. The feed has the advantages as follows: 1,palatability, ingestionspeed, growth speed and digestibility are high, the soluble loss of the feed in water is reduced, and mature time is short; 2, the amino acid is balanced, the nutritional requirement of the litopenaeus vannamei on the amino acid is met, the synthesis of the protein by the litopenaeus vannamei is effectively promoted, and discharge of the nitrogen is reduced; 3, disease resistance and survival rate are high and the culture benefit is obvious; 4, absorption and utilization rate is increased, discharge of phosphorous is effectively reduced and pollution to water is reduced; 5, the feed does not comprise artificial color and chemical additives and does not generate adverse influence on the nutritional value of the litopenaeus vannamei; and 6, dependence on the fish meal is reduced and the feeding cost is reduced.

The present invention relates to compositions and methods for providing mitochondria-selective targeting agents covalently linked to desired cargo such as radical scavenging agents. Compositions and methods are disclosed for treating an illness that is caused or associated with cellular damage or dysfunction which is caused by excessive mitochondrial production of reaction oxygen species (ROS). Compositions which act as mitochondria-selective targeting agents using specific structural signaling features recognizable by cells as mitochondrial targeting sequences are discussed. A method for delivering these agents effectively into cells and mitochondria where they act as electron scavengers by way of certain targeting sequences is also disclosed. Mitochondria and cell death by way of apoptosis is inhibited as a result of the ROS-scavenging activity, thereby increasing the survival rate of the patient. In a preferred embodiment, the compositions and methods may be administered therapeutically in the field to patients with profound hemorrhagic shock so that survival could be prolonged until it is feasible to obtain surgical control of the bleeding vessels. In further preferred embodiments, the composition for scavenging radicals in a mitochondrial membrane includes a radical scavenging agent and a membrane active compound having a high affinity with said mitochondrial membrane and associated methods. In another embodiment, the cargo transported by mitochondrial-selective targeting agents may include an inhibitor of nitrous oxide system (NOS) enzyme activity.

Compositions and methods are disclosed for treating an illness that is caused or associated with cellular damage or dysfunction which is caused by excessive mitochondrial production of reaction oxygen species (ROS). Compositions which act as mitochondria-selective targeting agents using specific structural signaling features recognizable by cells as mitochondrial targeting sequences are discussed. A method for delivering these agents effectively into cells and mitochondria where they act as electron scavengers by way of certain targeting sequences is also disclosed. Mitochondria dysfunction and cell death by way of apoptosis is inhibited as a result of the ROS-scavenging activity, thereby increasing the survival rate of the patient. In a preferred embodiment, the compositions and methods may be administered therapeutically in the field to patients with profound hemorrhagic shock so that survival could be prolonged until it is feasible to obtain surgical control of the bleeding vessels.

The invention discloses a breeding method for aseptic seeding and test tube seedling formation of orchids and the adopted broad-spectrum culture medium. In this method, a healthy orchid mother plant is selected, and artificially pollinated when it blooms, and the fruit that develops to maturity after pollination and has not cracked is used as an explant, or the orchid fruit that is basically mature and not cracked is taken from the wild as an explant. Implants undergo reproductive steps such as aseptic sowing, seed germination, strong seedling cultivation, and test-tube seedling transplantation. The specially prepared medium is used for aseptic sowing and seed germination to obtain small plants, and then the small plants are cultivated on the specially prepared strong seedling medium, and the seedlings are hardened under natural light in the greenhouse for 7-14 hours before being released from the bottle. One day, the test-tube seedlings were taken out, the root medium was washed off, and they were planted in a mixed substrate of bark, bluestone and peat, and further cultivated into seedlings. The invention has the characteristics of high seed germination rate, fast seedling growth, good seedling quality, low cost, etc., can obtain a large number of test-tube seedlings in a short period of time, and the transplanting survival rate of the seedlings can be kept above 90%. An effective way can be provided for the production of orchid seedlings.

The invention relates to a general-purpose composite Chinese herbal medicine immune enhancer for freshwater cultured fish, which is made of raw materials with the following weight ratios, based on the amount added per ton of feed: rhubarb 800-2000g; Sanqi 350-1000g; water Silybum 1200-2500g; Cassia 600-800g; Astragalus 600-2000g; Scutellaria baicalensis 500-900g; 500-1500g; Garlic 1000-2000g. After many tests in the laboratory, it has been proved that the general-purpose compound Chinese herbal medicine immune enhancer for freshwater aquaculture fish can improve the survival rate of a variety of freshwater aquaculture fish in the process of attacking viruses; The long-term breeding experiment of farmed fish feed proves that the general-purpose compound Chinese herbal medicine immune enhancer for freshwater farmed fish can effectively reduce the incidence of a variety of high-density farmed freshwater fish and improve the survival of the breed; the additive is safe, efficient, and has no side effects for long-term use. The breeding objects have strong vitality, rapid growth, bright body color, high feed conversion rate, and good breeding benefits.

The invention discloses an agaric culture medium which is prepared from the following raw materials in percentage by weight: 55-65% of sawdust, 25-35% of an auxiliary material, 5-8% of momordica grosvenori dregs, 0.8-1.1% of gypsum and 1-2% of sugar. By adding the momordica grosvenori dregs which are treated as a waste material into the culture medium, not only is the nutritional value of the culture medium improved, but also the resources are recycled, so that the resource waste is avoided. The agaric culture medium added with the momordica grosvenori dregs has the antibacterial function and can be used for reducing infectious microbe pollution of the culture medium and improving the survival rate of the culture. Compared with the prior art, the agaric culture medium has the advantages that the yield of agaric is increased by 12% and the cost is saved by over 10%.

The present invention relates to a method of the 3D track simulation for a miniature aircraft under urban surroundings and belongs to the field of the 3D real-time route navigation technology for a miniature aircraft. The following modules are set in a computer: a map digitalized module, which digitalizes the 3D model of urban surroundings including threat points, buildings, the departure and target points of a miniature aircraft that is inputted by the graphical user interface (GUI), map parameters and the coordinate of a candidate navigation point composed of the 3D model of urban surroundings and the map parameters; a flight path programming module, which inputs the data from the map digitalized module, calculates the overall route index that takes the flight resource consumption rate and the survival rate into consideration, figures out the most feasible route using network optimizing algorithm under the condition of taking barriers into consideration, and then smooths the bevel at turnings and generates a realtime flight orbit; a data-collecting module, which collects the coordinate values of the aircraft positions and postures outputted by the flight path programming module and forms a posture coordinate value including orthogonal coordinate variables X, Y and Z, a pitch angle h, a yawing angle p and a roll angle r. The present invention saves flight resources and improves flights simultaneously.

Compositions, methods and kits are described for identifying biomolecules (e.g., proteins and nucleic acids) expressed in a biological sample that are associated with the presence, development, or progression of a disease (such as cancer), or more generally determination of the etiology or risk factors associated with a disease. Sample types analyzed by the disclosed methods include but are not limited to archival tissue blocks that have been preserved in a fixative, tissue biopsy samples, tissue microarrays, and so forth. The methods disclosed herein correlate expression profiles of biomolecules with various disease types, and allow for the determination of relative survival rates; in some embodiments, the methods permit determination of survival rates for a subject with cancer. In other embodiments, the disclosure relates to methods for evaluating therapeutic regimes for the treatment, such as treatment of cancer.

The invention belongs to the field of feeds, and particularly relates to a six percent-premix for lactating sows and a wheat-type daily ration prepared from the six percent-premix. The premix comprises multivitamins, composite trace elements, DL-methionine, lysine, threonine, L-arginine, valine, composite electrolyte, compound enzyme, 5000 IU of phytase, functional additives, feed attractants, calcium hydrogen phosphate, stone powder, salt, choline, antioxidants and defatted rice bran. On the whole, the daily ration for the lactating sows is capable of protecting the development of mammary glands of the sows, ensuring plentiful milk with high quality in the lactation period of the sows and increasing the survival rate of suckling piglets, and enables the piglets to have higher weaning weight.

A novel gene 65B13 expressed specifically and transiently in dopaminergic neuron precursor cells immediately after cell cycle exit was obtained by the present invention. The cellular expression of 65B13 can be used as an index to select cells that are suitable in terms of their safety, survival rate, and network formation ability, for transplant therapy of neurodegenerative diseases such as Parkinson's disease.

The invention discloses a container seedling raising method for camellia oleifera bud-stock grafting. The container seedling raising method mainly comprises the six steps of cultivating camellia oleifera bud stocks, selecting and preparing nursery soil, preparing nutritional bags, preparing cions, grafting and transplanting and managing grafted container seedlings. According to the grafting method disclosed by the invention, the stocks are not injured, when packaging is performed, grafting ports can be completely closed, the moisture retention is good, the grafting survival rate can achieve 97%, and big seedlings, sound seedlings and improved seedlings can be cultivated; and furthermore, the container seedling raising method is simple and fast to operate, the complex camellia oleifera improved bud-stock grafting becomes simple and fast, and the container seedling raising method is further easy to learn, easy to understand and easy to operate.

The invention discloses a hermetia illucens breeding system and belongs to the technical field of green cultivation. The hermetia illucens breeding system comprises a culture pond and a ceiling arranged at the upper part of the culture pond; the culture pond is sequentially provided with a water absorption layer, a heating device and a grid layer from bottom to top; the heating device comprises a heating tape and a fixing frame for fixing the heating tape; a compost is put on the upper part of the water absorption layer; the heating device is located in the compost; the grid layer is located on a surface layer of the compost; a lifting device is arranged on the side of the culture pond; the lifting device drives the heating device to lift; and a heat preservation cover is arranged at the top of the culture pond. Hermetia illucens is bred by using the hermetia illucens breeding system, so that the survival rate of hermetia illucens larvae is high and the hermetia illucens is not affected by an external environment; furthermore, the hermetia illucens is easily separated from the compost and insect feces do not need to be cleaned, so that the cost of manpower and material resources is greatly reduced. In addition, the compost in the culture pond is digested and fermented in the hermetia illucens breeding process and can be directly returned to the field as an organic fertilizer, so that the hermetia illucens breeding system is economical and environmentally friendly.

The invention discloses a complex enzyme preparation for feeding piglets. The complex enzyme preparation for feeding piglets comprises the following seven enzymes: acid protease, amylase, xylanase, beta-glucanase, cellulase, pectinase and phytase; and the enzymatic activity ratio of the seven enzymes is 1: 1: (8-10): (3.3-4): 1: (0.5-0.55): (0-0.02). By applying the complex enzyme preparation disclosed by the invention, various anti-nutritional factors in feed can be degraded, the viscosity of chyme in an intestinal tract can be reduced, and the metabolic energy of the feed can be improved; the protein and starch digestibility of the piglets can be improved; excessive reproduction of harmful microorganisms in the intestinal tract can be reduced, damage to the intestinal wall can be reduced, and the microecological balance of the intestinal tract can be regulated; the survival rate and disease resistance of the piglets can be improved, the diarrhea rate can be reduced, and the overall uniformity is improved; and the weight gaining of the piglets can be promoted, and the cultivation cost is reduced.

The invention relates to a seedling growing method of apocarya and belongs to the technical field of fruit trees and forest cultivation. The method includes the steps of sprouting breeding, grafting and post-grafting management. By means of the method, a large amount of scions are obtained each year and are grafted on the stock and the seedling with strong affinity in due time, so that stock grafting survival rate of the apocarya is improved. Grafted seedling preserving rate after large-amount grafting is over 90%. Further, the method achieves tree body stuntedness, shortens the juvenile phase and enables tree bodies to fruit earlier in the fourth year after grafting. The fruiting time is 6-8 years earlier than before. Simultaneously, the method provides a growing method for apocarya stock grafting seedlings and with strong operability for batch and variety seedling growing of the apocarya and greatly increases economical value of the apocarya.

The invention relates to compound microecologics for purifying water quality and a preparation method thereof, belonging to the technical field of applied biotechnology. The method is characterized by conforming to the principle of diversified development of microecologics, utilizing various kinds of beneficial bacteria with different functions, carrying out scientific combination according to the proportion occupied by each kind of bacteria determined by orthogonal experiment, and forming efficient the multifunctional compound microecologics with the functions of intestine environment improvement, eating promotion, harmful bacteria restriction, water quality improvement, and the like. The invention is more characterized in that beneficial bacteria in the invention can be obtained easily at various parent strain markets, liquid fermentation technology is adopted for enlarging culture, and viable breeding accelerator, protective agent, viable absorbent, and the like are added to ensure the stability and the high efficiency of the compound microecologics. The invention solves the problems of unstable product characteristics, unsatisfactory using effect, low viable bacteria survival rate, and the like of microecologics at the current market.

The invention discloses a mixed feed of young broiler chickens and a preparation method of the feed. The mixed feed comprises various raw materials including corns, bean pulp, wheat bran, distillers dried grains with soluble (DDGS), wheat, rapeseed dregs, rice bran, soya-bean oil, three-worm powder, fish meal, wheat compound enzyme, salt and Chinese herbal medicine additives. The preparation method comprises the steps of crushing, burdening, granulating and spraying. The mixed feed has the beneficial effects that the disease resistance and the survival rate of the young broiler chickens can be improved, the nutritional requirements of the young broiler chickens can be met, the palatability and the digestibility are high, and the production performance of the young broiler chickens is improved.

The invention relates to a method for growing blueberry, which comprises soil modification, seedling cultivation, seedling planting and fertilization. In the invention, a soil modifier is applied to soil and the organic materials in the soil modifier increase the content of fatty acids such as acetic acid and propionic acid of the soil, so the rate of mycorrhizal infection, which is capable of promoting the growth of the blueberry, improving blueberry yield, contributing to productivity improvement and soil modification and improving quality and sugar content of fruits, of the blueberry is improved; meanwhile, pine soil and grass carbon are used to regulate the pH value of the soil. In the invention, a rooting medium which contains IAA growth hormone and glycine betaine is used to cultivate the seedlings, so the rooting rate of cuttings and transplanting survival rate are improved, the seedling cultivation time is reduced greatly, and the propagation efficiency is improved obviously. In the invention, a microbial fertilizer, a potassium sulfate type compound fertilizer, ammonium sulfate and diammonium phosphate are used for fertilizing the blueberry, wherein the ammonium sulfate can lower the pH value of the soil, namely the ammonium sulfate provides nutrients for the blueberry for growth and improves the growing environment of the blueberry; and thus, the blueberry yield is more improved effectively.

The invention relates to a water circulation system and a method for breeding marine fishes inland, and mainly solves the technical problems of complex process, large investment, high operating cost, large limitation of breeding varieties, low survival rate, slow growth and the like in the process of breeding the marine fishes in fresh water or low salinity salt water at present. A technical scheme comprises the following steps of: a, establishing the water circulation system; b, performing domestication on juvenile fishes of the marine fishes in the low salinity salt water in a gradient mode, namely breeding the juvenile fishes which are bred in the seawater in the brackish water temporarily, formulating a domestication strategy of slowing salinity gradually, and performing domesticationon the juvenile fishes of the marine fishes through three gradients, namely the brackish water phase, the low salinity phase and the ultra-low salinity phase; c, adding a physiological salt preparation, namely adding metal ions which play a key role in osmoregulation into the water or a feed; and d, managing the breeding, namely providing a preference temperature, illumination intensity and a daily illumination period. The water circulation system and the method are mainly used for breeding the marine fishes inland.

The invention, which belongs to the technical field of tree transplanting, discloses a method for transplanting a large cinnamomum camphora tree to land in north. According to the technical scheme, a tree is selected; root pruning and lump shrinking are carried out 2 to 3 years earlier; branch trimming is carried out after seedling lifting; and management after transport and transplanting. The method has the following beneficial effect: the survival rate is high and can reach over 90%.

The invention provides a microfluidic device and a method for preparing microgel by using the microfluidic device. The method comprises the steps of (1) taking a solution containing live cells or bioactive molecules, a photocuring agent and a hydrogel prepolymer as an internal phase, taking a mixed solution containing oil and an surfactant as an intermediate phase, and taking a polyvinyl alcohol aqueous solution as an external phase; (2) respectively conveying the internal phase, the intermediate phase and the external phase into a corresponding microchannel of the microfluidic device through a micro pump or a micro injector to form a monodispersed water-in-oil-in-water double emulsion; (3) enabling the monodispersed water-in-oil-in-water double emulsion in the step (2) to pass through an output channel of the microfluidic device, and collecting the monodispersed water-in-oil-in-water double emulsion in the step (2) into a collection vessel filled with an aqueous solution, thus obtaining the microgel immobilizing with the live cells or the bioactive molecules. The preparation of the microgel immobilizing with cells by a one-step method is realized, the obtained microgel is controllable in size, and narrow in size distribution, and meanwhile the survival rate of cells is maintained.

The invention relates to a pig feed, in particular to a nursery pig concentrated feed, comprising the following raw materials by weight proportion: 30-50 of sucking pig composite vitamin, 30-50 of low copper mineral element, 60-100 of peeled soybean meal, 100-180 of fermented soybean meal, 100-150 of extruded soybean, 110-180 of steam fish meal, 50-100 of dried porcine soluble, 60-120 of acid whey powder, 80-90 of glucose powder, 5-10 of glutamine, 80-100 of chyle fat powder, 40-49 of calcium carbonate, 12-14 of basic zinc chloride, 4-6 of salt, 55-60 of calcium biphosphate, 6-10 of sodium butyrate, 12-15 of lysine, 6-8 of threonine, 4-6 of TP-100 enzyme, 4-5 of cysteine, 5-7 of se-enriched yeast and 6-10 of copper chloride hydroxide. The nursery pig concentrated feed has the advantages of milk nutrition composition simulation, good palatability, high digestibility, large feed intake because the baby pigs like to eat and improvement of survival rate as well as immunity of the nursery pigs.

The invention discloses a multifunctional composite seed coating agent, which is a crop seed treatment agent prepared by mixing active ingredients such as pesticides, fertilizers, plant growth regulators and the like with inactive ingredients such as film forming agents, emulsifying agents, dispersing agents, anti-freezing agents, defoaming agents, antiseptic agents, PH value regulators, pigments and the like. The invention not only can effectively prevent and control plant diseases and insect pests in the seedling stage but also can promote and control seedling growth, ensures that seedlings grow regularly and luxuriantly with multiple tillers, and obviously improves the seedling survival rate. The traditional method can be used for soaking coated seeds in flowing water to accelerate germination for carrying out water breeding, dry breeding or direct seeding, and the coated seeds can be stored safely.

The invention discloses a method for conducting afforestation on saline-alkali soil. The method includes the steps of firstly, digging deep planting pits in the saline-alkali soil; secondly, paving two layers of isolating curtains at the bottom of each planting pit and the inner wall of each planting pit respectively; thirdly, arranging filtering layers between each isolation layer and the bottom of each planting pit and between each isolating layer and the inner wall of each planting pit; fourthly, preparing mixed matrix, filling the matrix into the pits and tamping down the matrix; fifthly, planting seedlings; sixthly, conducting maintenance management. According to the method for conducting afforestation on the saline-alkali soil, the difficult problems of lowering the salt content, improving the soil and conducting afforestation on the saline-alkali soil are solved. Through the measures of discharging salt and blocking salt, the salt content in the distribution range of the plant root systems is lowered, the plant root systems are promoted to absorb nutrient and water and discharge salt in a unidirectional mode, and a soil environment which is beneficial to plant growth is created. According to the method for conducting afforestation on the saline-alkali soil, the survival rate and the preserving rate of the seedlings are improved, and the method is low in cost compared with a traditional method for improving the saline-alkali soil by merely paving the salt isolating layers, replacing soil and conducting afforestation, is suitable for the saline-alkali soil afforestation and the plant cover recovery project, and can also be used in the manual construction and the machine and human coordinated construction.

The invention relates to a plant seedling raising technique, in particular to a camellia oleifera container seedling raising technique which aims to solve the problems of low seedling survival rate and low seedling raising efficiency of a camellia oleifera seedling raising technique in the prior art. The camellia oleifera container seedling raising technique includes the steps of (1) collecting seeds, and placing the collected seeds in a refrigeratory for cold storage and reserve at the temperature of 0-5 DEG C; (2) pre-treating the seeds, and soaking the seeds prior to sand storage for accelerating germination; (3) sowing, sowing the camellia oleifera seeds subjected to germination accelerating in a container containing seedling raising substrates in a spot manner, and then placing the container on a seedbed; (4) grating rootstocks of seedlings; (5) performing grafted seedling management including water management, rootstock removal and weeding management, light and temperature management, nutrient management and the like; (6) performing biennial seedling production management; and (7) performing outplanting management. The technique has the advantages of high seedling survival rate, high breeding efficiency and good reliability; and seedling survival rate of the seedling raising technique is 10-20% higher than that of inarching seedling raising and leaf cutting seedling raising techniques.

The present invention belongs to the field of aquatic cultivation technology, and is one purified system for high density green cultivation of sea water and fresh water fish in a complexly closed circulation facility. The lone purified water system consists of cultivation pond, deposition pond, aerating pond and biologically purifying pond to constitute one complete circulation system. Each of the cultivation pond, deposition pond and biologically purifying pond is provided with blowdown pipeline to exhaust deposited solid dirt. The present invention has raised fish survival rate and growth speed.