40results about How to "Stable water environment" patented technology

A system for growing plants in adverse circumstances is composed of a great container for growing plants in it, the matrix loaded in said great container, and a water storing and controlling unit communicated via water tube with water tank and arranged in said great container for contacting with said matrix.

The invention discloses an integrated type ecological floating bed and the water body ecological system repairing technology thereof. A physical space of the integrated type ecological floating bed is formed by constructing a floating bed, a sinking bed, a buoyancy adjusting bottle, a lifting chain and an ecological barricading net, and integrates ecological components such as indigenous emergent aquatic plants, submerged plants, attached aquatic plants, fishes, snails and biochemical zeolite. The ecological behaviors of the ecological components are in linear cause and effect relation. The ecological components and organisms in the physical space form a semi-enclosed ecological subsystem with integral completeness. The upper line and the water body ecological system to be repaired are strong in coupling capability, and ecological factors in the lower line can exist stably. The damaged water body ecological system sufferring from one or a plurality of types of pollutions including water body eutrophication, heavy metal pollution, organic pollution and the like can be repaired by building pioneer communities and utilizing self-cleaning capability of the ecological system, pollution is removed, integral restoration or rebuilding of the damaged water body ecological system is promoted, simultaneously environment is beautified, and ecological deterioration of a healthy water body can be prevented.

The invention discloses an ecological cultivation method for juvenile and young hippocampi striatum. The ecological cultivation method comprises the following steps: step 1: building a culture pond; step 2, preparing before the breeding, preparing a nutrient solution for fertilizer and water, and controlling water microorganism; step 3: selecting and cultivating parents of hippocampus striatum; and step 4: cultivating juvenile and young fish. According to the ecological cultivation method for the juvenile and young hippocampus striatum provided by the invention, copepods can be normally bred in the culture pond and can provide palatable bait for hippocampus larvae of different specifications; at the same time, the amount of replaced water is little, and the water environment is stable, anda suitable ecological environment can be provided for the hippocampus larvae, thereby facilitating the growth and survival of the hippocampi striatum; and the survival rate and growth speed of the juvenile and young hippocampus striatum can be increased.

The invention relates to a biofloc medium. The biofloc medium is prepared from soy honey, sucrose molasses, thickening starch, wheat bran powder, lactic acid bacteria, monopotassium phosphate and monocalcium phosphate. Good bacteria such as ammonifiers, nitrite bacteria, nitrifying bacteria, denitrifying bacteria and the like can be cultured in a water body by the biofloc medium under the condition of proper total alkalinity and hardness, stable denitrifying biofloc can be formed and has stable and efficient denitrifying capacity as well as assimilation and dissimilation functions, so that waste nitrogen in water can be discharged in the form of nitrogen, the water body is cleaned, a system is stabilized, disinfection and killing drugs are not used in the whole process, and green cultivation and zero-pollution discharge are realized truly. Cultivation difficulties such as bad water color, long-term standard exceeding of ammonia nitrogen and nitrite, staying at a high level or intense varying of pH, blue-green algae breeding, parasite flooding, long-term turbidity of the water body, serious pollution, multiple diseases and the like of the water body due to carbon-nitrogen imbalancecan be prevented and treated by using the biofloc medium regularly.

The invention discloses an aquatic animal fertilized ovum in-vitro incubation device. The aquatic animal fertilized ovum in-vitro incubation device is characterized by comprising a water tank, wherein columnar sponges are arranged inside the water tank, a plurality of grooves are evenly formed in the outer side walls of the columnar sponges, central water adsorption tubes are inserted into the center of the columnar sponges, a plurality of small holes are evenly formed in each central water adsorption tube, a drain pipe with a valve is arranged at the tail end of the central water adsorption tube through a submerged pump, the outlet end of the drain pipe is communicated with an external filter which is provided with a plurality of layers of filter cotton in a placement mode, the external filter is also communicated with the water tank through a drain pipeline, the columnar sponges and the central water adsorption tubes are matched with each other, the number of the columnar sponges and the number of the central water adsorption tubes is multiple, the tail end of each central water adsorption tube is connected with the drain pipe through the submerged pump, a temperature control heater is further arranged in the water tank, and a plurality of horizontal grooves are further formed in the grooves. The aquatic animal fertilized ovum in-vitro incubation device can imitate a slight water running environment in natural conditions, and can keep an incubation water body to be clean and keep the environment to be stable.

The invention relates to a breeding method, in particular to a grouper breeding method. The grouper breeding method comprises the following steps that before grouper eggs are put, a circulating watersystem with the water temperature control, sterilization and filtration functions is adopted for conducting water circulation treatment on a breeding pond, and bacillus subtilis is added; after the circulating water system is closed, the grouper eggs are put, and the water temperature of the breeding pond is controlled to be 25-30 DG C; 6 days after the grouper eggs are hatched, the circulating water system is started, and water circulation treatment is conducted on the breeding pond till grouper breeding is completed; and 3 days after the grouper eggs are hatched, live bait is fed, and different live bait is fed at different growth stages till grouper breeding is completed. According to the grouper breeding method, the water circulation system is continuously conducted in the breeding process to keep the water environment stable, the breeding period is shortened, disease invasion is reduced, dependence on a high-quality water source is reduced, the control strength on the breeding water quality is improved, and the breeding success rate is increased.

The invention relates to an urban rainfall runoff pollution control method based on a three-level management and control system. The method is based on analysis and calculation of urban rainfall runoff pollution output. By construction of a rainfall runoff pollution reduction system with three-level coupling of source control, midway reduction and tail end treatment, runoff pollution whole-processcontrol is achieved, urban runoff river entry pollution is greatly reduced, urban water environment stability is maintained, and the method can be applied to non-point source pollution treatment of urban rainfall runoff formation.

The invention discloses environment-friendly alkaline residue and sludge composite solidified soil with low chloride ion content. The formula comprises the following components in parts by weight: 35-40 parts of alkaline residues, 55-60 parts of sludge, 0.3-0.4 parts of an anion exchanger, 0.2-0.3 parts of a wrapping agent, 0.3-0.5 parts of a water absorbent, 0.1-0.2 parts of a dispersing agent, 2-3 parts of cement, 3-4 parts of lime, 2-3 parts of fly ash and 1-2 parts of gypsum. According to the invention, 201X7 strongly basic anion resin is used as an anion exchanger; diammonium phosphate and diatomite are used as wrapping agents; alkali residues are used as an alkali activator of a curing agent; under the condition of certain unconfined compressive strength, the environment-friendly solidified soil with low chloride ion content is prepared, the content of dissolved chloride ions is lower than that of original mud flat sludge, the problem that the concentration of the dissolved chloride ions in the alkaline residues is high and pollutes the environment is solved, resource utilization of the alkaline residues is achieved, environmental pollution is reduced, and economic, social and environmental benefits are obvious.

The invention discloses a leisure, sightseeing and breeding platform with a dock, and relates to mariculture and marine sightseeing, tourism and leisure. The leisure, sightseeing and breeding platformcomprises a buoyancy frame formed by connecting buoyancy stand columns and horizontal buoyancy pipes, the frame is provided with a culture net; a net bag culture pond, a free-ranging pond, a wind driven generator, a beacon light and recreational and catering facilities are arranged on a deck, the deck is provided with a yacht dock and an official ship dock, and two wave absorbing walls are arranged on the left side edge, the right side edge and the bow of the deck. Wave absorbing walls are arranged on the left side, the right side and the front part of the dock. The wave absorbing walls arecomposed of a U-shaped steel pipe with a U-shaped section and a closed top. The beneficial effects of the invention are that the yacht dock and the official ship dock are arranged; the wave absorbingwalls are arranged on the periphery of the platform and the side wall of the dock, the flow baffles are arranged on the two sides of the bow, the yacht and the official ship berthed in the dock can bestable and safe, the aquaculture net cage and the aquaculture net bag are arranged on the underwater part of the ship, the wave absorbing walls and the flow baffles provide a stable water environmentfor cultured organisms, and growth of the aquatic organisms is facilitated.

The invention provides a sewage disposal tank integrating diversified processes of Orbal, bio-dopp, MBBR and MBR. The sewage disposal tank comprises a tank body, the tank body is internally provided with compartment plates which sequentially divide the tank body into an anaerobic zone, an anoxic zone, an aerobic zone, a sedimentation zone and a membrane filtration zone, water via holes are formedin the compartment plates, the tank body is provided with a water inlet and a water outlet, the water inlet is located in the anaerobic zone, and the water outlet is located in the membrane filtrationzone; the volume ratio of the anaerobic zone to the anoxic zone to the aerobic zone is (18-25):(25-35):(45-60), sewage in the aerobic zone flows back to the anaerobic zone through a sludge reflux pipe, and the membrane filtration zone is provided with an MBR membrane which is an MBR dynamic membrane, an MBR flat membrane or an MBR curtain membrane; carriers are arranged in the anaerobic zone, theanoxic zone and the aerobic zone respectively. The sewage disposal tank integrating diversified processes of Orbal, bio-dopp, MBBR and MBR has the advantages of being small in occupied area and highin disposal efficiency and effluent quality.

The invention relates to a pond-based ecological intensive aquaculture system for marine fishes, which includes an aquaculture area, a purification area and a fish excrement collection area. The aquaculture area is composed of a number of parallel isolation walls and blocking nets at the two ends of the isolation walls. There are marine fishes in the aquaculture area. The bottom of the aquaculturearea is an inclined stainless steel plate which inclines at a degree of 5-20. A water pushing device is arranged on the outer side of the higher end of the stainless steel plate. The fish excrement collection area is located on the outer side of the lower end of the stainless steel plate. The aquaculture area, the purification area and the fish excrement collection area are connected. The aquaculture area accounts for 2-5% of the total pond area. The pond-based ecological intensive aquaculture system for marine fishes has the advantages as follows: daily management is convenient; the aquaculture cost can be reduced; the aquaculture yield and efficiency can be improved; a win-win result can be achieved for economic and environmental benefits; the operation efficiency of the ecological function units can be maximized; and the allocation of resources can be optimized.

The invention discloses a high-digestion high-utilization-rate catfish feed, and belongs to the technical field of processing of catfish feeds. Based on nutritional requirements of catfish and water body environment, the digestion characteristics of the catfish are combined, the formula of a conventional catfish feed is optimized, and a feed complex enzyme, wormwood seed powder, a prunus humilis bunge extract and a phagostimulant are scientifically compounded, so that the catfish feed can be prepared, wherein the feed complex enzyme can effectively degrade anti-nutritional factors in the catfish feed, increase the utilization rate of nutrient substances of starch, protein, minerals and the like, increase the protein level, the organism antioxidative activity and the digestive absorption rate of the catfish, significantly increase the digestibility and the production properties of the catfish, reduce the feed coefficient, prevent the water bodies from being polluted and maintain good water quality is scientifically compounded; the wormwood seed powder can significantly improve the caking property, the water resistance, the glossiness and the frost resistance of the catfish feed and reduce the powder containing rate of the feed; the prunus humilis bunge extract can effectively complement calcium, ferrum and soluble fibers; the phagostimulant can substantially improve the palatability of the feed; and therefore, the catfish feed is good in feed coefficient, high in digestibility, good in production properties, high in propagation properties, high in disease resistance, high in palatability and low in cost.

The invention discloses a bio-fermented expanded pellet feed for California bass as well as a preparation method thereof. The method comprises the following steps: (1), mixing and crushing basic feedmaterials, transporting the powder into an expander, after steam heating gelatinization, performing extruding, expanding and pelletizing on a product, and drying to obtain expanded pellets of basic feed; and (2), putting the expanded pellets of basic feed into a mixer, spraying probiotic fermentation broth on the expanded pellets of basic feed in the mixer, and packing a mixture into a sealed bagto seal and ferment for 3-5 d after uniformly stirring. The expanded pellets of basic feed are used as culture and fermentation substrates of probiotics, which are not only nutrient sources of fish but also carriers of the probiotics and fermentation metabolites of the probiotics. The bio-fermented expanded pellet feed is acidic, and has an aroma of the metabolites of the probiotics and good palatability; and the expanded pellet feed can not only meet the nutritional requirements of aquatic animals in aquaculture water, but also adjust the water quality, improve water body substrates and control diseases, the water environment is stable, the intestines and stomachs of fish are healthy, and the feed effect is good.

The invention discloses a set of apparatus and a method for culturing Haematococcus pluvialis and converting astaxanthin in large scale. The apparatus consists of a photo-bioreactor system set on the frisket, aeration equipment, culture fluid inoculation equipment and still cell harvesting equipment. Floating or sunken pulse equipment is set on the frisket. The apparatus don't need establishment of artificial culture pool and other institution, but uses natural water body to culture Haematococcus pluvialis in large scale. It is low cost, the culture temperature, illumination and water flow rate is stable, culture fluid flows with each other, aeration is continuous, culture conditions are precedent, which make the growth and increment of Haematococcus pluvialis almost at equal pace. The growth rate of Haematococcus pluvialis can reach to 25%, biomass increase is fast, doubles 3-5 days. The photo-bioreactor can be hoisted into required depth of the water, which solves the contradiction of difference of temperature, illumination and nutrition of Haematococcus pluvialis culture and astaxanthin conversion.

The invention relates to a method for treating a garbage leachate based on multidimensional strong oxidization and circular biochemical treatment, belonging to the technical field of sewage treatment. The method comprises the following steps: the garbage leachate is collected and injected into a regulating tank, water quantity regulation and water quality regulation are performed, the regulated garbage leachate is injected into a multidimensional strong oxidization facility, organic matters are directly degraded by using electrodes, and heavy metal ions are adsorbed and collected in the meanwhile, so that the growing environment of the putrefying bacteria flora is destroyed, thereby eliminating the putrefying bacteria and other florae with poor activities, providing a stable water quality environment for subsequent treatment, and avoiding the uncertainty of the treatment result; after flocculent precipitation is performed, the heavy metal ions and killed florae are separated and removed along with the flocculent precipitate, and residual organic matters in the water are consumed by the metabolism of anaerobic bacteria in an anaerobic pond, thereby improving the environment for the subsequent circular biochemical treatment; in the four-stage circular biochemical treatment, aerobic bacteria under aeration conditions are utilized to eliminate organic pollutants in the water; the wastewater subjected to biochemical treatment are subjected to flocculent precipitation by chemical agent addition; and finally, filtration is performed to form the harmless treated water.

The invention discloses a model test pressure stabilization water feeding system and an operation method of the model test pressure stabilization water feeding system. The model test pressure stabilization water feeding system comprises an air compressor, wherein the air compressor is connected with a pressure stabilization water storage device through a gas pipe; the pressure stabilization water storage device is connected with a flow monitor and a pressure transmitter through a water pipe in sequence; the pressure transmitter is connected with a point source water feeding device; the pressure stabilization water storage device is connected with a booster pump through a water feeding pipe; water outlets are formed in the bottom and outer side of the point source water feeding device. According to the model test pressure stabilization water feeding system, by filling a similar material inside the point source water feeding device and pre-embedding a model test bed to simulate water storage and diversion structure of geotechnical engineering, stable dynamic water environment can be provided for a grouting model test, important indexes such as pressure and flow in a water delivery process can be monitored, acquired and displayed in real time, and the water delivery pressure and flow can be adjusted in real time according to feedback information to meet model test requirements. The current situation that the current grouting model tests are performed under no water or still water condition, which does not accord with actual conditions of a grouting engineering is changed.

The invention relates to a method for manually breeding Charybdis feriatus seedlings in an earth pond and belongs to the technical field of seedling culture for aquaculture. The method comprises the following steps that incubated parent crabs subjected to intensive culture in a concrete pond are placed in an incubation basket which is prepared in the earth pond in advance, rotifers are fed at the same day of incubation, the water color of the earth pond is observed every day and the transparency of the earth pond is kept about 35 cm; after being developed to the third stage of zoea, copepods are fed to the earth pond, and the density of the copepods is kept at 5 per milliliter; during megalops period, fish and meat are fed to the earth pond according to 200% of the estimated larva weight until the larvae are developed to young cabs. During the seedling breeding period, the requirements on the water quality are that the salinity is reliably stable and is kept at 2-3%, the temperature is 26-29 DEG C, the pH is 7.8-8.6, the dissolved oxygen is more than 4 mg / L and the transparency is kept at 30-50 cm. According to the method, a technology for manually breeding the Charybdis feriatus seedlings in the earth pond is implemented, and the method is simple, quick and low in production cost, and provides a feasible way for scale production of the Charybdis feriatus.

The invention discloses a construction method of grid-frame-platform-type overwater forests, gardens or orchards, and belongs to the field of overwater cultivation. In the method, a grid-frame-steel-structure technology is used to construct a cultivation platform; chemical barrels are used as floating bodies to solve load-bearing problems; a cultivation method using ceramsite and gravel as a medium is used for planting garden plants and fruit trees; a water-body water recycling irrigation method is used to solve the problem of fertilizer and water requirements of the plants; developed root systems of the plants are used as biological filters and exert a purification effect on water quality; and therefore, an ecological symbiotic system in which trees and fruit trees grow without fertilization, and water quality of a water body is purified is formed. In addition, with the combination of solar power generation, off-grid recycling irrigation is realized, and energy saving, green and ecological environment repairing effects are reached.

The present invention relates to the technical field of skin care products, in particular to a plant polysaccharide moisturizing factor and its preparation method and application. The polysaccharide moisturizing factor comprises the following components in mass percentages: tremella polysaccharide 2-3%, trehalose 2-3%, fruit polysaccharide Sugar 2-3%, bio-glucose-1 1-2%, oat bran extract 1-2%, wolfberry fruit extract 1-2%, honey extract 1-2%, phenoxyethanol 0.5-0.8% , and the balance is double distilled water. The polysaccharide moisturizing factor can be applied to freckle removal, whitening, wrinkle removal, anti-aging, sunscreen, moisturizing and repairing cosmetics or facial mask products. The polysaccharide moisturizing factor of the present invention not only has excellent functions of regulating skin water content, intelligently moisturizing and maintaining skin physiological activity, but also has strong repairing, immune and slow-release functions.

The invention discloses an ecological intercepting technology of a source of pollution of urban and rural polluted water, and technology is used for solving the problem of intercepting exogenous pollution of opened polluted water and ecological repair problem of the polluted water. The technology comprises the following steps: (1) arranging two ecological intercepting walls of the source of pollution at the entrance of the source of pollution of a river along the length direction to form an intercepting area; (2) arranging ecological floating islands on both sides of the river in the intercepting area; (3) putting complex enzymes and compound microorganisms to the intercepting area so as to purify the water; (4) putting aquatic animals to the intercepting area so as to purify the water. The water quality is enhanced, the ecological environment of the water is improved, and meanwhile, the effect of optimizing landscapes is realized.

The invention provides a method of breeding artemia in high density under alga cultivation environment. In an artemia cultivation water environment, the density of algae is one million cells / mL to ten million cells / mL; the water environment contains pseudomonas aeruginosa whose concentration is 10<6> to 10<8> / mL; the density of artemia is 5 to 12 / mL; and the optimized density of artemia is 5 to 10 / mL. The method increases dissolved oxygen in water and not only solves the problem of initial feed of artemia, but also solves the problem of low survival rate and spawning rate of high density cultivation. The method is also suitable in large aquaculture pond for guaranteeing stable water environment and survival rate.

The invention discloses a maintenance and stabilization preparation for water quality of ornamental fish breeding, which comprises the following components by weight: 50-60 parts of natural minerals, 15-20 parts of calcium peroxide, 10-20 parts of glucose, and 5-10 parts of vitamin C . The purpose of the present invention is to provide a natural, high-efficiency, low toxic and side effects, high safety, no residue, can significantly improve the ability to adjust and maintain ornamental fish breeding water, improve the water quality of ornamental fish cultivation, enhance the disease resistance of ornamental fish, and promote the growth of ornamental fish A maintenance-stabilizing formulation for ornamental fish culture waters.

The invention discloses a composition for improving the breathability of orchard soil and an application method thereof. The composition is non-toxic and non-polluting, and specifically, the composition is a mixture of granular polyacrylamide, corncob particles and carbon residues; meanwhile, according to the composition for improving the breathability of the orchard soil and the application method thereof, a hole storage technology is adopted, the composition for improving the breathability of the orchard soil is filled in soil holes close to tree watering ranges in a centralized mode, a layer of 'water storage and breathable layer' is formed, water is conserved, a certain amount of gas can be effectively stored, at the same time, because of the water absorption and dehydration effects of granular polyacrylamide, the corncob particles and the carbon residues, the soil at root areas of fruit trees is loosened, the breathability of the soil at the root areas is improved, and the oxygen content of the soil at the root areas is increased; the root-system vigor of the fruit trees is improved, and the growth and development of plants are promoted.

The invention discloses a composition for improving the breathability of orchard soil and an application method thereof. The composition is non-toxic and non-polluting, and specifically, the composition is a mixture of granular polyacrylamide, corncob particles and carbon residues; meanwhile, according to the composition for improving the breathability of the orchard soil and the application method thereof, a hole storage technology is adopted, the composition for improving the breathability of the orchard soil is filled in soil holes close to tree watering ranges in a centralized mode, a layer of 'water storage and breathable layer' is formed, water is conserved, a certain amount of gas can be effectively stored, at the same time, because of the water absorption and dehydration effects of granular polyacrylamide, the corncob particles and the carbon residues, the soil at root areas of fruit trees is loosened, the breathability of the soil at the root areas is improved, and the oxygen content of the soil at the root areas is increased; the root-system vigor of the fruit trees is improved, and the growth and development of plants are promoted.

The invention relates to the technical field of modern agricultural cultivation, and discloses a three-dimensional cultivation method for improving the cultivation benefits of pelteobagrus fulvidraco.Through the research on the growth and reproduction characteristics of the pelteobagrus fulvidraco, a three-dimensional cultivation mode of pelteobagrus fulvidraco-solenaia oleivora is adopted, wherein pelteobagrus fulvidraco cultivation is taken as the main mode, combined with solenaia oleivora cultivation; according to the cultivation mode, the load of a water ecological cultivation system is lightened in real time, competitive fishes do not need to be stocked, so that the cultivation density is improved; excess nutrient substances in pond bottom mud and water body are effectively utilizedcombined with the solenaia oleivora cultivation mode, and eutrophic substances are taken away in a mode that the eutrophic substances are taken as feeds for the pelteobagrus fulvidraco and harvest mature solenaia oleivora, so that in-situ restoration of the environment is realized; the adverse effects of eutrophication on the surrounding ecological environment are reduced, the input of feeds, fishmedicines and labor is reduced, the breeding benefits of the pelteobagrus fulvidraco are improved, and the problems of low yield, poor benefits and large pollution of the existing pelteobagrus fulvidraco breeding are solved.

The invention discloses a low-power-consumption cyclone biochemical reactor, comprising a reactor tank body and an air incoming system. The bottom of the reactor tank body is provided with a wastewater inlet; the upper end of the reactor tank body is provided with a feed segment; the upper end of the feed segment is provided with an upper guide component; a flow push component is arranged in the feed segment; the lower end of the feed segment is provided with a flow guide barrel; a flow guide plate is arranged between the feed segment and the flow guide barrel; a lower guide component is arranged at the bottom of the flow guide barrel; the upper end of the reactor tank body is provided with an outflow weir; one side of the outflow weir is provided with a water outlet; the air incoming system includes an air inlet and an air distributor; the air inlet is positioned in the top of the reactor tank body; the air distributor is positioned at the upper end of the lower guide component; the air inlet of the air distributor is positioned in the flow guide barrel. Compared with the traditional biochemical reactors, the low-power-consumption cyclone biochemical reactor has high processing capacity, low power consumption, small size and low consumption of land resources.

The invention discloses a model test pressure stabilization water feeding system and an operation method of the model test pressure stabilization water feeding system. The model test pressure stabilization water feeding system comprises an air compressor, wherein the air compressor is connected with a pressure stabilization water storage device through a gas pipe; the pressure stabilization water storage device is connected with a flow monitor and a pressure transmitter through a water pipe in sequence; the pressure transmitter is connected with a point source water feeding device; the pressure stabilization water storage device is connected with a booster pump through a water feeding pipe; water outlets are formed in the bottom and outer side of the point source water feeding device. According to the model test pressure stabilization water feeding system, by filling a similar material inside the point source water feeding device and pre-embedding a model test bed to simulate water storage and diversion structure of geotechnical engineering, stable dynamic water environment can be provided for a grouting model test, important indexes such as pressure and flow in a water delivery process can be monitored, acquired and displayed in real time, and the water delivery pressure and flow can be adjusted in real time according to feedback information to meet model test requirements. The current situation that the current grouting model tests are performed under no water or still water condition, which does not accord with actual conditions of a grouting engineering is changed.

The invention discloses a processing method for a catfish feed with a high digestion and utilization rate. The catfish feed provided by the invention is developed on the basis of the nutritional demands of catfish, a water environment and the digestion characteristics of the catfish and formulated through optimization of conventional formulas for the catfish feed. The catfish feed with low feed coefficient, high digestion rate, good production performance, high reproductive performance, strong disease resistance, good palatability and low cost is eventually prepared through scientific compounding of the following components: feed complex enzyme capable of degrading anti-nutritional factors, increasing the utilization rates of nutrients like starch, protein and mineral matters, improving the protein level, antioxidation activity and digestion and absorption rate of the catfish, substantially enhancing the digestion rate and production performance of the catfish, lowering feed coefficient, preventing water pollution and maintaining excellent water quality; wormwood seed powder capable of substantially enhancing the bonding performance, water resistance, glossiness and frost resistance of the catfish feed and lowering the powder content of the feed; Chinese dwarf cherry extract capable of effectively supplementing calcium, iron and soluble fiber; and a feeding attractant capable of greatly improving the palatability of the feed.

The invention relates to a prawn aquaculture method. According to the method, prawn aquaculture higher-place ponds are designed, one higher-place pond monomer (1) is taken to culture algae before young prawns are released, all higher-place pond monomers (1) are filled with cultured algae water to serve as aquaculture water at a releasing stage of the young prawns, and the young prawns are releasedto culture the prawns. According to the prawn aquaculture method, high-quality algae water is cultured by the higher-place pond monomers, the method helps a farmer to spend difficult releasing stageof the young prawns, aquaculture risks are reduced, and aquaculture incomes are improved.

The invention discloses a loach feed which is bred in a high-density and scaled mode, and is prepared from the following components in percentage by weight: 10.0wt% of bean pulp, 2.0wt% of steam fish meal, 15.7wt% of sesame meal, 16.6wt% of cottonseed meal, 10.0wt% of rice bran, 15.0wt% of wheat, 1.6wt% of monocalcium phosphate, 8.0wt% of bran, 1.5wt% of monosodium glutamate yeast, 6.0wt% of imported meat and bone meal, 2.0wt% of united bran, 4wt% of embryo bran, 3.6wt% of corn vinasse, 1.5wt% of phospholipid oil, 0.1wt% of lysine, 1.0wt% of premix, 0.4wt% of Chinese herbal medicine additive and 1.0wt% of zeolite, wherein all components amount to 100%. The components of the feed are optimized; Chinese herbal medicine is added into the feed to replace antibiotics, thereby accelerating loaches to healthily grow, improving fish body quality and the immunity of an organism, preventing diseases, quickening loach growing speed, lowering feeding cost, avoiding the antibiotics, preventing medicines from remaining in the body, and improving feed stability.