57 results about "Elodea nuttallii" patented technology

The invention discloses a rice and chicken lobster continuous mixing planting and breeding method capable of stabilizing the grain income and increasing the fishery income. The method includes: digging circular furrows in a rice field, increasing the height and the width of ridges, reinforcing the ridges, and additionally arranging escape-proof facilities; transplanting Ceratophyllum demersum and Alternanthera philoxeroides in the circular furrows after water in the rice field is disinfected; transplanting Hydrilla verticillata, Potamogeton maackianus and Potamogeton wrightii in the rice field outside the circular furrows; performing a rice and chicken lobster continuous cultivation mode, breeding chicken lobsters from the last ten days of September or the first ten days of October to the first ten days of June of the secnd year after the rice is harvested; raising rice seedlings in a special field from May to the first ten days of June, and planting the rice from the middle ten days of June to the last ten days of September; using a ground cage to catch the chicken lobsters from May to the first ten days of June, and leaving a part of the chicken lobsters to be cultivated with the rice; putting parent chicken lobsters into the circular furrows of the rice field from the middle ten days of August to the first ten days of September; applying a fermentative organic fertilizer and putting Bellamya quadrata from the last ten days of February and the last ten days of May; putting Elodea nuttallii from March to June; feeding the chicken lobsters with a compound fodder at 18 p.m. to 19 p.m. every day; controlling the water level all through the year; controlling diseases of the chicken lobsters; catching the chicken lobsters; and planting the rice.

The invention belongs to the field of ecological breeding of special aquatic products and relates to a method for breeding juvenile crabs in rice fields. A three-dimensional ecological planting and breeding mode of quaternity of rice, the juvenile crabs, soybean and elodea nuttallii is adopted for breeding the juvenile crabs in the rice fields. Annular crab ditches or crab ditches shaped like the Chinese ri are adopted around the rice fields, the elodea nuttallii is planted in the crab ditches, the soybean is planted on ridges, weeds, insects, underwater plankton and benthos in the rice fields are utilized to breed the juvenile crabs, growth of the juvenile crabs is guaranteed, and the good effects of weeding, deinsectization and field cleaning are achieved; meanwhile, excrement of the juvenile crabs further has the effects of returning to the fields through abdomens and continuously improving fertilizer efficiency, and movement of the juvenile crabs, such as food finding, promotes raw nutrient cycle of the soil. The mutual controlling and promoting effects of a biologic chain formed among living beings including the rice, injurious insects and river crabs are utilized, the rice and crab symbiosis ecological environment is improved according to the reproduction law of the rice and organic combination of the living beings, and pollution-free performance, nutrition and high yield of rice and crab products are achieved.

The invention provides a method for recovery of submerged plant communities through submerged vegetation turf. The composite submerged vegetation turf is made and is transferred and implanted into ecological systems such as a river and a lake to be recovered. Young seedlings of submerged plants are cultivated in a paddling pool through a plant fiber blanket, the young seedlings are fast cultivated through submerged plant seeds, winter buds, broken branches and other propagules, two submerged plants are planted on each piece of turf, three types of turf of elodea nuttallii and potamogeton crispus, vallisneria spirals and hydrilla varticillata, and potamogeton maackianus and hydrilla varticillata are cultivated, the cultivated young seedlings and the plant fiber blanket are taken out of the pool in pieces during transplantation, the turf is formed, rolled into cylinders and transported to a target water region, and then the turf is placed at the bottom of water piece by piece and fixed through T-shaped fixing stickers. The method has the following advantages that the illumination, water depth and the nutrient conditions of the paddling pool can be controlled easily, the submerged plant turf is conveniently transported and planted on site, and on-site plant planting time is saved.

The invention provides a system and method for improving black and odorous riverway water quality through micro-aeration and submerged plants. Black and odorous riverway contaminated bottom silt is improved through bottom layer micro-aeration, release of contaminants of the bottom silt is controlled, growth of the submerged plants is assisted, and ammonia nitrogen is reduced. Meanwhile, according to the seasonal change of the plants, evergreen submerged vegetation is established through an elodea nuttallii-eel grass combination, accompanying species of ceratophyllum demersum, myriophyllum spicatum and hydrilla varticillata are planted in an assisted mode, the stable submerged vegetation is established, and the purpose of improving the riverway water quality is achieved. The problem that the transparency is low in the initial stage of a black and odorous riverway water quality improvement project is solved through a floating bed capable of ascending and descending through introduction of the submerged plants. The probability of establishment of the specific submerged vegetation in a black and odorous riverway is verified, water quality improvement is remarkable, operation is easy, the project amount is small, and the system and method are economical and practical.

The invention provides a method for preparing compound feeding attractants for aquatic animals. The method includes steps of S1, smashing vallisneria spiralls, elodea nuttallii, alga, button mushroom powder, corn flour, wheat flour, rapeseed cake, bean pulp, rapeseed meal and cotton powder to obtain materials A; S2, arranging wild trash fish, gobioidaei, conch meat, red nematode powder, dried silkworm chrysalis, clam meat, cuttlefish paste, yellow mealworm, propolis and squid paste in a grinder to prepare materials B; S3, preparing traditional Chinese medicine extract powder; S4, uniformly mixing the materials A, the materials B and the traditional Chinese medicine extract powder with one another to obtain mixtures, adding tussah immune active protein, monocalcium phosphate, shell powder, phospholipid oil, organophosphate, choline chloride, lard, inositol, betaine, casein, gluten powder, fish oil, soybean oil, cellulose powder, amino acid mixtures, vitamin mixtures, mineral mixtures, compound feed additives, subtilisin, active peptide and phytase into the mixtures and uniformly mixing the mixtures, the tussah immune active protein, the monocalcium phosphate, the shell powder, the phospholipid oil, the organophosphate, the choline chloride, the lard, the inositol, the betaine, the casein, the gluten powder, the fish oil, the soybean oil, the cellulose powder, the amino acid mixtures, the vitamin mixtures, the mineral mixtures, the compound feed additives, the subtilisin, the active peptide and the phytase with one another to obtain the compound feeding attractants. The method has the advantages that the aquatic animal yield can be increased by the aid of the compound feeding attractants, and the quality of the aquatic animals can be improved by the aid of the compound feeding attractants.

The invention relates to a pond ecological self-purification type clean production method of soft-shelled turtle cultivating, in particular pertaining to the aquiculture technical field. The invention is characterized in that Elodea nuttallii is planted around a soft-shelled turtle cultivating pond; ipomoea aquatica forsk is grown on the surface of the pond without soil: adopting cystosepiments as carriers, ipomoea aquatica forsk is planted in the holes of the cystosepiments; the cystosepiments is fixed and integrated into a whole between each other so as to be assembled on a fixed support on which a underlay netting is arranged, and is then put into the pond; the construction of immobilized microorganism bio-membrane in the soft-shelled turtle cultivating pond: bamboo media filler is transversely suspended in the center of the soft-shelled turtle cultivating pond; microecologics is splashed so as to form microorganism bio-membrane. By constructing ecosystem in the same pond and realizing clean production through ecological self-purification, the invention is characterized by convention sourcing, low cost, fast return, long lasting time, good stability, good operability, invulnerability to external interference, etc., and can greatly improve the quality and efficiency of the soft-shelled turtle cultivating in the pond.

The invention discloses a method for ecologically breeding river crabs. High-quality river crab larvae of Chinese mitten crabs belonging to the Yangtze River system and with obvious crab characteristics are selected and placed into a breeding pond with various waterweeds to breed, wherein slligator alternenthera grass and Elodea nuttallii are planted in the breeding pond; the slligator alternenthera grass accounts 50 to 60 percent of the water surface area of the breeding pond; and the Elodea nuttallii is planted in the area where the slligator alternenthera grass is not planted and is arranged according to the requirement of planting one cluster in 1 to 2 square meters. By the method for ecologically breeding the river crabs, the river crabs have pure germplasm and obvious characteristics of the Chinese mitten crabs belonging to the Yangtze River system; 200 kilos of the river crabs can be produced per mu averagely; large-scale high-quality qualified ratio can reach over 87 percent; various defects in sporadic breeding can be overcome; the breeding area can be saved by 50 percent; popularization and application of improved variety are facilitated; and the industrialization progress of the river crabs is improved.

The invention discloses a combined constructed wetland system capable of stably treating domestic sewage all year around and an operating method. The system comprises an emerging plant wetland, a submerged plant wetland and a sewage pump, wherein the emerging plant wetland and the submerged plant wetland are combined; valves are arranged at the combined position; the sewage pump is arranged in the submerged plant wetland, and leading water in the submerged plant wetland to the emerging plant wetland in summer; the system is operated in a continuous water inlet and plug-flow water outlet manner. Such thermophilic emerging plants as reeds and cattails and such psychrophilic submerged plants as potamogeton crispus and elodea nuttallii, namely two types of seasonal plants, are matched and combined to achieve complementation in the system, so as to effectively overcome the defects that the carbon-nitrogen ratio of the sewage in summer is low and the seasonal effect on the conventional surface flow constructed wetland is great.

The invention relates to the technical field of breeding of aquatic products, in particular to a method for breeding loaches in a paddy field. The method comprises steps including land selection, disinfection, ditching, seed selection, bottom fertilizer application, feeding and the like. Bottom fertilizer is prepared from raw materials as follows: 20-30 parts of livestock manure and urea, 10-15 parts of Raphanus sativus, 15-17 parts of rudbeckia laciniata, 15-20 parts of Melilotus albus, 10-15 parts of buckwheat, 15-20 parts of azolla imbricate, 15-17 parts of Astragalus adsurgens and the like through fermentation; feed is mainly prepared from raw materials as follows: 11-13 parts of rape stalks, 10-11 parts of Veronica polita, 10-13 parts of berchemia Yunnanensis, 11-13 parts of herba epimedii, 10-13 parts of elodea nuttallii, 13-15 parts of Silphium perfoliatum, 5-6 parts of actinolite powder, 10-15 parts of flat snail meat meal, 10-15 parts of clam meat meal and the like through fermentation. Rice planting and loach breeding are scientifically and organically combined, the weight and reproduction of the loaches are effectively increased, the breeding benefits of the loaches are increased, and meat of the loaches is firm and delicious and contains rich nutrients.

The invention discloses a breeding method in paddy field lobster farming crop rotation 2+1 modes. The breeding method includes steps of S1, digging annular ditches in paddy fields in early spring, applying fertilizers, planting potamogeton crispus and elodea nuttallii and improving the water quality; S2, removing weeds for the potamogeton crispus and the elodea nuttallii when the temperature is gradually increased in March, and placing lobster seeds in the paddy fields in the middle ten days and the last ten days of March under the conditions of the stocking sizes of 200-300 lobster seeds / kilogram and the stocking density of 4000-6000 lobsters / mu; S3, breeding the lobster seeds for the breeding time of 20-25 days and capturing lobsters in the middle ten days of April; S4, carrying out disinfection, bottom modification and detoxification on the paddy fields after the lobsters are completely captured. The breeding method has the advantages that the large-scale lobster yield can reach 150-200 kilograms / mu, is double the traditional 1+1 paddy and lobster crop rotation yield and is higher than the yield of paddy and lobster symbiotic modes; first batches of lobsters appear on the marketin April and can be sold at a high price of 40-60 yuan / kilogram, and the lobsters are bred at the low density, are high in survival rate and have high benefits.

The invention discloses a biomass organic potash fertilizer. The biomass organic potash fertilizer is prepared from, by weight, 12-14 parts of animal hairs, 1-2 parts of bamboo leaf flavonoid powder, 1-3 parts of potassium iodide, 9-10 parts of lard stearin, 4-7 parts of corn protein powder, 3-5 parts of potassium carbonate, 1-2 parts of copper sulfate, 80-90 parts of crop straw, 24-25 parts of plant ash, 3-5 parts of carnallite, 6-7 parts of monopotassium phosphate, 2-3 parts of potassium chlorate, 45-50 parts of elodea nuttallii, 2-3 parts of cellulase preparation, 2-3 parts of protease preparation, 23-26 parts of tamarindus indica fruit and an appropriate amount of water. According to the biomass organic potash fertilizer, added raw materials are diverse, biochar and multiple organic acids and humus react together, the carbon element in soil is captured, carbon fixation and emission reduction are achieved, effective potassium in the soil is increased in the long-term organic and available inorganic aspects through added carnallite, potassium chlorate and the like, long-term potassium source supply is achieved, and requirements of green agriculture are met.

The invention discloses a selenium-rich green pepper liquid fertilizer which is prepared from the following raw materials in parts by weight: 4-5 parts of calcium superphosphate, 3-4 parts of Fengtou ginger, 4-6 parts of monopotassium phosphate, 3-5 parts of mango peel, 5-6 parts of ammonium sulfate, 3-5 parts of animal bone meal, 1-3 parts of antimonselite powder, 4-7 parts of ammonium nitrate, 2-3 parts of carnallite powder, 4-6 parts of elodea nuttallii and 6-9 parts of auxiliaries. With scientific proportioning, the green pepper liquid fertilizer disclosed by the invention completely meets the nutritional requirements in the growth process of green pepper; by adding the selenium-rich raw materials such as antimonselite powder and Fengtou ginger and combining the easily-absorbed water-soluble fertilizer, the selenium content of the produced green pepper can be effectively increased; and meanwhile, no harmful waste is generated in the production process of the fertilizer, environmental pollution is avoided when the fertilizer is used, and the fertilizer is an excellent green pepper fertilizer with high economic value and good prospect.

The invention discloses a water ecological restoration system; an upper frame and lower frame of the system are connected through connection rods arranged on two sides; floats are mounted on the upper frame, and flexible solar panels are arranged on the floats; the upper frame is provided with plastic planting areas, the bottom of each planting cell of the plastic planting areas is provided with a plurality of seepage holes; a light passage is formed between every two adjacent plastic planting areas along the length of the upper frame; a plurality of propellers are arranged at one end of the upper frame in its width direction on a support, and stirring devices are mounted on the supports in the middle of the upper frame; all the stirring devices, the propellers and the flexible solar panels are connected to a battery pack on a mounting platform on the upper frame; a floating matter remover is arranged on the upper frame; a plastic planting plate is arranged on the lower frame, and Hydrilla verticillata, Elodea nuttallii, Potamogeton pectinatus and / or Dendrobium lohohense are planted in planting holes of the plastic mounting plate; a plastic retaining plate is mounted in every two adjacent retaining grooves.

The invention discloses a feed of crabs. The feed is prepared from the following components in parts by weight: 10-15 parts of Hanayama bran, 8-12 parts of rapeseed meal, 9-13 parts of soybean meal, 5-10 parts of tubificidae powder, 15-20 parts of fish meal, 10-13 parts of middlings, 5-10 parts of yolk powder, 6-8 parts of chicken liver powder, 5-8 parts of chicken blood powder, 6-8 parts of kelp powder, 4-8 parts of elodea nuttallii leaves, 5-7 parts of vallisneria natans, 4-5 parts of myriophyllum spicatum, a proper amount of salt, and 4-5 parts of a preservative, wherein the preservative is prepared from the following components in parts by weight: 10-15 parts of sorbitol, 4-8 parts of monosaccharides, 1-5 parts of sweet potato powder, 5-8 parts of gluconic acid and 4-7 parts of natamycin. The feed is an ecological and green feed, and is capable of obviously improving the disease resistance of crabs, greatly increasing the survival rate of crabs, ensuring the high breeding speed of crabs and improving the yield of crabs when being used for feeding crabs.

The invention discloses a biomass organic fertilizer capable of increasing PH of acid soil. The biomass organic fertilizer is prepared from raw materials in parts by weight as follows: 6-8 parts of seaweed meal, 2-3 parts of calcium sulfate, 2-3 parts of sodium lignin sulfonate, 28-32 parts of saw dust, 3-5 parts of monoammonium carbonate, 73-77 parts of crop straw, 15-16 parts of plant ash, 6-8 parts of attapulgite powder, 4-5 parts of lentinan, 3-4 parts of sodium nitrate, 53-57 parts of elodea nuttallii, 2-4 parts of a cellulase preparation, 3-4 parts of a protease preparation, 9-10 parts of Tamarindus indica Linn. and a proper amount of water. The biomass organic fertilizer adopts various alkaline raw materials and can reduce the content of exchangeable Al<3+> and H<+> of soil and increase the pH value of surface soil through adsorption of charcoal and activity of organic matters, so that the soil can be suitable for planting of plants, the fertility preservation potential of the soil can be improved with the aid of various nutrient materials, the fertility maintenance performance of the soil is improved, the soil is suitable for growth of plants, and the yield is increased.

The invention discloses a cultivation technique of freshwater shrimps. The cultivation technique comprises the following steps of (1) establishing a cultivation pond of which the bottom is flat and the two sides are slopes, laying loam soil at the bottom of the cultivation pond, laying a layer of maifan stones on the loam soil, and separately arranging a row of cultivation net cages of which the specification is 5m* 5m* 1m on the other two sides of the pond (except the two slopes); (2) half a month before breeding, performing disinfection treatment on the cultivation pond, and mounting oxygen supply equipment; (3) planting lythrum salicaria, aquatic iris and cyperus alternifolius on the slopes of the pond, planting dendrobium lohohense, potamogeton pectinatus and elodea nuttallii at the bottom of the pond, and putting pear-shaped bellamya in the pond to form a water body self-purification system; (4) designing a formula feed and fresh bait; (5) performing classified breeding, and performing gradient feeding; and (6) performing reasonable fishing. According to the cultivation technique disclosed by the invention, comprehensive nutrition can good-quality growth environment are provided for the growth of the freshwater shrimps, the growth speed of the freshwater shrimps can be notably increased, the immunity of the freshwater shrimps can be notably enhanced, the yield and the quality of the freshwater shrimps are improved, the survival rate of cultured shrimp larvae is increased, and the economic benefits of breeding households are guaranteed.

The invention discloses a biomass active ecological organic fertilizer. The active ecological organic fertilizer comprises the following raw materials in parts by weight: 1-2 parts of copper sulphate powder, 3-4 parts of micro silicon powder, 18-20 parts of straw ash, 5-6 parts of monoammonium phosphate, 2-3 parts of calcium chloride, 16-19 parts of cassava slag, 26-28 parts of lentinus edodes chaff, 74-78 parts of crops straw, 3-5 parts of dolomite dust, 2-4 parts of original liquid of EM, 48-54 parts of Elodea nuttallii, 3-4 parts of a cellulase preparation, 2-3 parts of a protease preparation, 6-8 parts of tamarind fruits, and a proper amount of water. The biomass organic fertilizer takes biomass charcoal as a carrier, a plurality of beneficial microbes as well as medium and trace elements and organic humus are added as core fertilizer sources, soil flora can be effectively activated, crop root microenvironment is improved, soil porosity is increased, soil unit weight is reduced, pathogenic bacteria in the soil is purified, chemical residue and heavy metal pollution in the soil can be decomposed, and the biomass active ecological organic fertilizer provides excellent growth environment for crops.

The invention relates to the technical field of toad farming, in particular to a ricefield breeding method of toads, comprising the steps of (1) selecting and preparing a ricefield; (2) inserting riceseedlings into the ricefield, allowing water to move in micro-flow form for long time, adding toad tadpoles into the ricefield, and planting Elodea nuttallii in ditches; (3) setting cow dung, 20-30 centimeters thick and fermented with EM (effective microorganism) activated solution, on a rest platform, covering the cow dung with straws, soybean meal and wheat bran; (4) applying farmyard manure and EM activated solution to the rice field before rice flowering and earing so as to form a toad growth ecological system constructed with waterweeds, rice, snails, EM bacteria and waterweeds, and riceroot microorganisms. The ricefield breeding method of toads provided herein allows a toad growth and breeding environment to be optimized, and toad farming cost to be reduced.

The invention discloses a potassium-increasing soil repairing agent. The potassium-increasing soil repairing agent comprises the following raw materials in parts by weight: 22-24 parts of coffee grounds, 8-10 parts of Elodea nuttallii, 2-3 parts of sodium phosphate, 2.3-2.5 parts of polyaspartic acid, 6-7 parts of alcohol waste mash, 1.5-1.8 parts of bamboo leaf flavonoid powder, 15-18 parts of waste tobacco leaf ash, 3-4 parts of carnallite fine powder, 59-61 parts of polluted pen manure, 12-14 parts of papermaking black liquor, 3.5-3.6 parts of a nitric acid solution with concentration being 10%, 9-10 parts of alum slurry, and a proper amount of water. The soil repairing agent aims at the general problem of potassium deficiency of the soil in our country, by adding the potassium-rich raw materials such as waste tobacco leaf ash and carnallite fine powder, through combined action of decomposed organic matters such as coffee grounds and Elodea nuttallii, maximum absorbing capacity of the elements is increased, biological enzyme activity of the soil layers can be promoted by assistance of bamboo leaf flavonoid powder and polyaspartic acid, release and accumulation of the effective potassium element in the soil are realized, and favorable condition can be provided for planting the crops.

The present invention mainly relates to the technical field of breeding and discloses a humulus scandens containing feed additive for black bone chickens. The feed additive is prepared from the following raw materials: humulus scandens, eichhornia crassipes, typha orientalis, arundo donax leaves, elodea nuttallii, white granulated sugar, lactic acid bacteria, compound enzymes, an eupatorium coelestinum extract and a conyza canadensis extract. The humulus scandens is rich in sources, the wastes are turned into treasures, and new utilization ways of the humulus scandens are utilized. The feed additive is rich in raw materials and low in prices, contains a variety of health-care ingredients, is fermented by the lactic acid bacteria, can remove the raw and astringent taste, is sour and sweet in mouthfeel, the use of lactic acid bacteria, increases palatability, increases feed intake, promotes gastrointestinal absorption functions, prevents bacteria and inflammation, enhances immunity, keeps fresh and green color and luster, promotes the formation of melanin in the black bone chickens, enhances the health-care functions of chicken meat, enable the mouthfeel of the chicken meat to be fresh and tender, increases an egg production amount by 15.1%, improves an economic income by 13.9%, is simple in use method and less in addition amount, saves a lot of breeding costs, and is easy to promote sales.

The invention discloses an ecological planting and breeding symbiosis method for fishes, shrimps and rice. The method is characterized in that the method comprises the steps that a rice field is selected and rebuilt, calcification thick liquid is used for spraying and sterilizing the field after the field is subjected to sun exposure, and annular ditches are dug along the peripheries of the innersides of ridges and used for fish and shrimp activity; elodea nuttallii and hydrilla varticillata are planted in the annular ditches, oxygen aeration equipment is arranged, an integrated water inlet and an integrated water outlet are built and formed in an opposite angle mode, wire meshes surround the water inlet and the water outlet, and fishes and shrimps are prevented from escaping; a plantingand breeding mode comprises fish stocking of young shrimps, fry putting and rice planting; fertilization comprises the steps that organic fertilizer, inorganic fertilizer and enzymes bacteria biological fertilizer are applied, fertilization is conducted on sunny days, the organic fertilizer which ferments completely is used as base fertilizer, the inorganic fertilizer is sufficiently dissolved inwater and used for spraying and top dressing, the enzymes bacteria biological fertilizer is used as efficiency promotion fertilizer, and after the enzymes bacteria biological fertilizer is immersed for half an hour, even spraying is conducted; daily management comprises the steps of water level control, regulation and control of water quality, and prevention and treatment of insect pests.

The invention discloses a method for planting elodea muttallii in the concrete pond without oil. The method comprises the steps of pond preparing, elodea nuttallii planting cage body making, eloda nuttallii planting and daily maintenance. Elodea nuttallii cultivation in a cement pond without bottom materials such as soil is achieved by combining the culture practice of crustaceans such as shrimps and crabs according to the growth characteristic of the elodea muttallii. The elodea muttallii which is planted through the method has the advantages that the elodea muttallii growth is fast, the operation is easy, the material cost is low, and the ecological effect is good, and the method for planting the elodea muttallii in the concrete pond without the the oil has an important meaning on cement pool ecological cultivation of aquatic animals.

The invention discloses a teal breeding method through rice-duck co-culture. The method includes: selecting a structural parcel with staggered layers at corners as a rice-duck co-culture area, applying organic base fertilizer, deeply ploughing, drawing water to nourish a field, plant-breeding elodea nuttallii, building duck houses at positions of the staggered layers, planting astragalus sinicus,alfalfa and typha angustifolia before seedling transplanting in the rice-duck co-culture area, screwing into soil after plants survive, selecting ducks small in size as breed ducks after seedling transplanting, putting the ducks into the rice-duck co-culture area in the middle of June, feeding different food materials according to different growing periods of the ducks, increasing feed feeding amount in late August, starting to withdraw the ducks, performing centralized breeding after withdrawing is completed, and re-stocking the ducks into the rice field for fattening after rice is harvestedto obtain commodity ducks. The rice field is fully utilized in the process of duck breeding to generate greater economic benefit, ecological mutually complementary and beneficial environment is built,duck breeding cost can be reduced effectively, and duck meat quality is improved.

The invention discloses a bass pond ecological culture method. The method comprises the steps of pond construction, stocking, feed preparation, and culturing, in particular, a quiet and safe environment is selected to construct a pond, aerators are installed, elodea nuttallii and alternanthera philoxeroides are planted, a sun-shading net is constructed, bass stocking is conducted by a stocking density of 9000-10000 stock per mu, culturing is conducted according to the method with the feeding rate of 7-11% of the feed body mass and the daily feeding frequency of 3-4 times. The bass pond ecological culture method has the advantages that the utilization rate of granulated feed by the bass is increased, the digestibility of feed protein and energy is increased, growth is promoted, productivity is increased, food waste and residual bait are reduced, summer water temperature is lowered by utilizing the combination of elodea nuttallii, alternanthera philoxeroides, and sun-shading net, energy consumption can be reduced, water eco-environment can be improved, and good ecological benefits can be achieved.

The invention relates to the technical field of water body ecological restoration, and in particular relates to a low-salinity water body purification method and an application thereof. The low-salinity water body purification method comprises the following steps: planting all-grass of spiral wildcelery, najas minor, and elodea nuttallii as a submerged plant combination in a low-salinity water body to establish an ecological community. By utilizing the special combination provided by the invention, the salt resistance of the submerged plant can be improved, and a problem that a single plant has poor salt resistance is solved; and furthermore, a salt-resistance ecological system is formed, the purification capability to the low-salinity water body is improved, and the transformation of the water body from eutrophication to oligotrophication is achieved.

The invention discloses a biomass organic fertilizer for vegetation restoration. The fertilizer is prepared from, by weight, 2-3 parts of calcium formate, 27-29 parts of tea bran, 3-4 parts of oxidized starch, 7-8 parts of sodium alginate, 6-7 parts of fish bone meal, 2-3 parts of chitin, 4-5 parts of potassium chloride, 100-120 parts of crop straw, 75-80 parts of elodea nuttallii, 5-6 parts of cellulase preparation, 3-4 parts of protease preparation, 19-21 parts of tamarind and a proper amount of water. The biomass organic fertilizer is suitable for being used during vegetation restoration of bare soil areas, mainly provides a large quantity of effective nutrients, increases the content of soil organic substances and improves soil fertility, sodium alginate, chitin and various root growth promoting nutrients are added to the fertilizer so as to guarantee quick growth of restored vegetation, and the fertilizer has extremely high practical value in land greening and ecological improvement.

The invention discloses a novel crawfish-rice rotation culturing method. The novel crawfish-rice rotation culturing method comprises the following steps of S1, constructing a seedling and seed pond; S2, processing seeds and planting rice; S3, stocking seed crawfish; S4, after elodea nuttallii is germinated and grows out of water, filling in water until reaching an original water level; S5, after 35-50 days of growth, harvesting the rice. The novel crawfish-rice rotation culturing method is improved from a traditional crawfish-rice rotation culturing method and is clear in processes; planting the rice can ensure sufficient nutrients in water, breeding crawfish can purify the water, and the agricultural income can be increased accordingly.

The invention discloses a biomass organic fertilizer for planting melons and fruits. The fertilizer is prepared from the following components in parts by weight: 25 to 26 parts of corncob, 14 to 15 parts of beer residue, 1 to 3 parts of copper sulfate pentahydrate, 4 to 6 parts of potassium humate, 5 to 6 parts of quartz stone powder, 8 to 9 parts of fly ash, 3 to 4 parts of boric acid, 62 to 66 parts of crop straw, 3 to 5 parts of oxidized lignosulfonate, 12 to 15 parts of orange peel, 69 to 73 parts of elodea nuttallii, 3 to 4 parts of cellulase preparation, 2 to 3 parts of protease preparation, 13 to 14 parts of fruits of tamarindus indica, and a proper amount of water. The provided fertilizer is rich in nutrients, at the same time contains many active groups, and has a strong absorption performance. Nutrients in soil and the fertilizer can carry out complexing easily, and thus the loss of nutrients in fertilizer is prevented. The fertilizer can also promote the trace element absorption and utilization of crops. The utilization rate of fertilizer is improved. Moreover, the blossoming and fruiting of crops are both promoted by the fertilizer, and thus the economic benefits of agriculture plantation are largely increased.

The invention provides an open-air temporary rearing method of procambarus clarkii in winter. The method comprises the steps that selection of an overwintering planting and breeding paddy field and field engineering transformation are carried out; open nylon net cages are used for breeding the procambarus clarkii, the net cages are arranged on the table surface of the paddy field side by side, theline spacing is 8-12 meters, the interval is 4-7 meters, and the distance of the outermost row of the net cages from the inner edge of an annular ditch is 5 meters or above; the water quality is regulated; elodea nuttallii is planted, the line spacing is 8-12 meters, and the plant spacing is 4-6 meters; red shell shrimps are selected and put in the net cages; in the rearing period, the water level is maintained at 1.2-1.5 meters above the table surface; feeding management of temporary rearing of the procambarus clarkii is carried out; a special procambarus clarkii feed is selected for feeding. The open-air temporary rearing method of the procambarus clarkii in winter has the advantages that by changing the overwintering environment of the procambarus clarkii, measures of deep water injection, the high net cages, thick water plants and fertilizer and water for cultivation are taken, a better overwintering environment is created for the procambarus clarkii, the stress stimulation of theenvironment temperature change on the procambarus clarkii is retarded, finally, the overwintering survival rate of the procambarus clarkii reaches 90% or above, and the overwintering weight is reduced to less than 5%.

The invention discloses a feed for improving meat quality and mouth feel of crabs. The feed includes the following raw materials: vallisneria natans, elodea nuttallii, seaweeds, powder of volvaria volvacea, soybean meal, flour, rapeseed meal, cotton powder, wild trash fish, mantis shrimps, meat of margarya, powder of limnodrilus hoffmeisteri, dried silkworm chrysalis, meat of clam, Wu Fei powder, calcium dihydrogen phosphate, phospholipid oil, phosphates, choline chloride, lard, inositol, betaine, a micro-element chelated composite, vitamin C, vitamin E, cellulose, and a Chinese traditional medicine antibacterial composite. The feed has abundant nutrients and good palatability, can satisfy nutritional demand of crabs during a growth period, can increase growth speed and improve significantly meat quality, and also can improve disease resistance and is high in safety.