48results about How to "Promote life activities" patented technology

The invention relates to the technical field of soil improvement, and concretely discloses a saline-alkaline land soil conditioner, and a preparation method and an application thereof. Raw materials of the conditioner comprise 400-600 parts of a biomass decomposed material, 150-242 parts of a pyroligneous liquor, 200-300 parts of charcoal powder, 4-10 parts of urea and 2-10 parts of a microbial agent. All the components are synergistically combined, so the conditioner contains abundant organic matters, provides favorable conditions for crop growth, can improve the physical and chemical properties of the soil and slowly release nutrients, improves the fertilizer utilization rate and the water holding capacity of the soil, effectively reduces the pH value of the soil and the salt content ina soil solution, delays accumulation of salt in the surface soil, and has a good improvement effect on saline-alkaline land soil.

The invention belongs to the technical field of biomedicine application of micro total analysis systems, and particularly relates to an integrated multifunctional controllable cell control and analysis micro-fluidic chip and application of the chip. The integrated multifunctional controllable cell control and analysis micro-fluidic chip comprises an inertia focusing structure formed by continuous asymmetric bend channels, a laminar flow structure formed by a plurality of branch channels and a joining channel, a micro-fluidic control liquid drop forming structure and a micro-array capturing structure, wherein all the structures are connected through a channel, the inertia focusing structure, all branch channels of the laminar flow structure and the micro-fluidic liquid drop forming structure respectively have a solution injecting hole, and the micro-array capturing structure has a solution injecting hole and a waste solution outlet. According to the integrated multifunctional controllable cell control and analysis micro-fluidic chip, multiple functional structures are integrated in cell analysis for solving the problem that functions of high-flux analysis, trace analysis, cell controllable manipulation and the like in an existing cell analysis method are difficult to integrate, and the technical field is promoted to be further developed.

The invention relates to the technical field of saline-alkali land improvement, in particular to a comprehensive treatment method for a saline-alkali land. The method consists of the following steps that 1, the saline-alkali land is deep ploughed and tilled loosely, an rice straw interlayer is laid and the surface is leveled, wherein the ploughing depth is 25-30 cm; 2, irrigation and salt washingare performed three times, wherein the water consumption is 60-160 m<3> per mu at a time, and the total water consumption is 300-400 m<3>; 3, a microbial organic fertilizer is applied to the saline-alkali land, tilling and leveling are conducted again; 4, salt-tolerant alkali-tolerant rice is planted for crop rotation with green manure plants. The method can improve the physical structure of soil,reduce the evaporation amount of water in the soil of the saline-alkali land, enhance the water-holding capacity of the soil, increase the content of organic matter, reduce the disasters of crop diseases and insects, increase the yield of crops, improve the economic benefits of the saline-alkali land and reduce the degree of soil salinization.

The invention discloses an efficient fertilizer contributing to reduction of accumulation of a chromium heavy metal pollutant in a vegetable. The fertilizer comprises the following components, by weight part: betaine, activated nanometer attapulgite, rice bran, powder or fermented substances of stem-type vegetables with strong fiber, cationic chitosan, germinated brown rice, microzyme, melatonin, an anion-modified macro-molecule chitosan heavy metal adsorbent, and a proper amount of mineralized micromolecule activated water. Melatonin and betaine treated with mineralized micromolecule activated water match activated nanometer attapulgite to prepare factors for self-cleaning of a chromium heavy metal. The factors easily enter the inside of cells, quickly participate into living movement of plants, promote plant bodies to absorb and utilize heavy-metal-chromium-type substance, and further promote living movement of the bodies, thereby reducing pollution. The fertilizer matching a nutrient solution treated through mineralized micromolecule activated water, and main materials can effectively convert heavy metals left in the vegetable, thereby having a function of self-cleaning of heavy metals.

The invention relates to a novel method for rapid composting by combining sludge of different types. The method is realized by three main steps, namely mixed blending, aerobic fermentation and discharging and storing. According to the method, the aerobic composting is realized by combining sludge from urban sewage treatment plants, sludge from wastewater treatment plants of beer enterprises and furfural residue discharged by furfural enterprises and particularly parameters of initial composting are adjusted by using the characteristics of different sludge and acidic furfural residue. The novel method has the advantages of reducing the ecological environment risk, increasing nutritive substances of composting products, reducing the cost of the composting, realizing rapid composting without adding extra microbe consortium and the like.

The present invention relates to a compound microbial agent for ecological restoration and belongs to the technical field of microorganisms. The compound microbial agent comprises microbial flora, algae, microbial promoters and biological enzymes; wherein the microbial flora comprises photosynthetic bacteria, yeasts, heterotrophic aerobic bacteria, pseudomonas stutzeri, nitrobacter winogradsky, nitrococcus and denitrifying bacillus; the algae comprises chlorella pyrenoidosa, chlorella ellipsoidea and spirulina maxima; the microbial promoters comprise sodium bicarbonate, potassium chloride, magnesium sulfate, ferric sulfate, calcium nitrate, isomalt oligosaccharide, fructooligosaccharide, inulin and xylooligosaccharide; and the biological enzymes are one or more of cellulase, protease, amylase, pectinase and lipase. The compound microbial agent can be applied to a variety of water body environments, removes a variety of pollutants, at the same time has advantages of good pollutant removal effect and quick effect, and has great potential for promotion and application.

The invention belongs to the technical field of plant cuttage and in particular relates to a method for prolonging the vase life of Chinese rose flowers. The method comprises the following steps: carrying out material treatment: pruning Chinese rose flower branches before being cultivated in a vase, so as to enable the length of the branches to be 30 to 40cm; reserving 2 to 3 healthy leaves at theupper half parts of the branches; cutting end faces of tail ends of the branches into inclined planes to obtain the branches to be inserted for later use; carrying out vase cultivation: inserting thebranches to be inserted into a vase filled with a nutrient solution with a special formula, so as to finish the vase cultivation of the Chinese rose flowers. According to the method provided by the invention, moisture balance is easy to keep in a Chinese rose flower vase cultivation process and normal physiological metabolism is kept; the fresh-keeping effect is improved and the ageing of cut flowers is decayed.

The invention relates to a beach saline-alkali soil conditioner with both soil improvement and fertilizer efficiency and preparation and application methods thereof. The soil conditioner comprises according to parts by weight: 80-90 parts of domestic sludge, 1.5 parts of calcium oxide, 3.5-7.5 parts of biochar, and 5-11 parts of crop straw. The technical bottleneck in quickly conditioning beach soil at low cost is effectively solved; by combining the domestic sludge and biochar, it is possible to effectively promote the formation of beach soil aggregates, reduce soil salt return, reduce pH, increase oil organics content and nutrients such as N and P, effectively promote beach saline-alkali soil structural improvement and fertility improvement, and ensure backup resources for agricultural farmlands of China.

The invention discloses biomass pellet feed for ruminants and a preparation method thereof. The biomass pellet feed comprises the following components in parts by weight : 32-40 parts of corn stalks,18-24 parts of corn cobs, 27-33 parts of sweet potato stalks, 16-26 parts of ryegrass, 21-25 parts of brewer's spent grains, 11-15 parts of eggshells, 20-24 parts of soybean meal, 0.7-1.3 parts of preservatives, 2-4 parts of antioxidants and 0.6-1.2 parts of choline chloride. Te preparation method includes the following steps: Step 1, using ammonia water, calcium hydroxide solution and carboxamideperoxide to carry out combined chemical impregnation on the corn stalks, the corn cobs, the sweet potato stalks and other biomass materials, and carrying out saturated steam explosion treatment at the pressure of 2.4-3.6 MPa, thereby obtaining a pretreated biomass material; Step 2, subjecting the pretreated biomass material to dehydration drying and ensiling fermentation, thereby obtaining silage; Step 3, evenly mixing crushed egg shells with the preservatives, the antioxidants and the choline chloride, thereby obtaining a feed additive; and Step 4, evenly mixing the silage with the feed additive, and subjecting the mixture to granulation and magnetic sterilization, thereby obtaining the biomass pellet feed. The invention can further increase the softness and digestibility of the biomasspellet feed and accelerate the ensiling fermentation rate by the combined chemical impregnation and steam explosion of cellulose molecular chains, chemical bonds, hydrogen bonds and crystallinity; andthe biomass pellet feed is enhanced in the preservative performance and prolonged in the storage time by cooperating the choline chloride with the preservatives.

The invention discloses a preparation method of a 3D-configuration sodium titanate nanofiber coating with high bonding strength. The preparation method comprises the following steps: using a pure titanium sheet as a base material, polishing the surface of the pure titanium sheet to be smooth, and cleaning and drying the polished pure titanium sheet for later use; preparing an etching liquid, placing the polished titanium sheet in the etching liquid for etching, and then carrying out cleaning and drying for later use; and soaking the obtained pure titanium sample in a NaOH solution with the concentration of 0.5 mol.L <-1>-1.0 mol.L<-1>, and carrying out hydrothermal treatment at 220-230 DEG C for 2-17 hours to obtain the sodium titanate nanofiber coating with high bonding strength on the titanium surface. The construction of the three-dimensional nanofiber coatings with different geometric configurations on the surface of the titanium implant is realized by a simple and feasible hydrothermal method, and the construction of the coating on each surface immersed in a solution is uniform and consistent without dead angles and shielding parts; and the gradient 3D coating capable of beingused for manufacturing the bone nail special for penetrating through cortical bone and cancellous bone can be obtained through the liquid-gas combined action.

The invention relates to the technical field of pepper seedling cultivation, and discloses a cultivation method of overwintering pepper seedlings. The cultivation method of the overwintering pepper seedlings comprises the following steps of S1, selecting seeds and soaking the seeds in pesticide; S2, controlling the temperature to germinate; S3, carrying out base-divided seedling raising; S4, carrying out field management; and S5, transplanting seedlings. According to the method, a warm water and liquid medicine soaking method is adopted in the seed selection stage, the seeds soaked with a sodium phosphate solution and a sodium hydroxide solution can effectively prevent virus diseases, the seeds soaked with the copper sulfate can effectively prevent anthracnose and bacteria, the disease resistance of the seeds is enhanced, and germination of the seeds can be effectively promoted through temperature control germination, so that the germination time of the seeds is effectively prolonged,the subsequent seedling strengthening rate is high, and it is guaranteed that the seedlings can adapt to environment changes and cannot die due to temperature changes; and by adopting a ridged planting mode, the fertilization amount and the pesticide spraying amount can be effectively controlled, and the situation that due to uneven fertilization or pesticide spraying, the seedling growth difference is too large, consequently the subsequent fruiting rate is uneven, and the yield is lowered is avoided.

The invention relates to an integrated ecological floating ball for water ecological restoration. The integrated ecological floating ball includes a hollow ball body with a cavity, a hollow portion iscylindrical and passes through the ball body upwards, a cavity body with part of a thickness is reserved downwards to achieve an effect of bearing plants, and a plurality of through small holes are distributed in the reserved cavity body to connect a water body and a plant root system; and cylindrical fixing ducts pass through the middle portion of the floating ball in the directions of the front, the rear, the left and the right, and serve as through holes for connection between floating ball units. The plant fixing cavity body is filled with plants for water ecological restoration, a plurality of ecological floating ball units are connected by causing ropes to pass through the fixing ducts, to form an ecological floating ball combination for restoration of polluted water areas. According to the integrated ecological floating ball, the ball body is ingeniously adopted as an ecological floating ball main body, a manufacturing process is simple, the integrated ecological floating ballhas functions of wind wave resistance and lodging resistance, the water can be purified by arranging the integrated ecological floating ball in a water area needing to be treated, and the integrated ecological floating ball has a water ecological restoration function.

The invention relates to the field of river regulation, in particular to a river ecological restoration method. The method comprises the following steps: step 1, performing partition treatment; step 2, dredging and salvaging floating objects by adopting a physical treatment method; step 3, laying aeration and oxygenation equipment; step 4, putting microorganisms; step 5, putting a biological agent; 6, cultivating submerged plants, wherein the submerged plants are cultivated through a seedling throwing method or a cuttage method; and step 7, constructing an artificial ecological floating island. According to the ecological restoration method for the riverway, the riverway to be treated is divided into sections and regions, then a physical treatment method is utilized, aeration and oxygenation equipment is laid, microorganisms and biological agents are put, submerged plants are cultivated, and an artificial ecological floating island is constructed, so that the restoration rate of a eutrophic riverway water body is increased, and the problem of river water quality can be thoroughly solved.

The invention discloses a potato peptide nutrient. The potato peptide nutrient comprises the following ingredients in percentage by weight: 1-85% of potato peptide and linoleic acid, octadecatrienoic acid, oleic acid, saponin, flavonoids, phospholipid, bifidus factor, vitamins, carotene, microelements such as calcium, magnesium, potassium, zinc and the like, as well as vitamins and glucose which account for the remaining percentage. The potato peptide nutrient is prepared by the following steps: soaking sliced potatoes by dilute hydrochloric acid or acetic acid; removing acid by water; making the sliced potatoes into pulp and grinding the pulp so as to obtain a potato pulp-material; separating a soybean pulp to extract the protein; grinding the protein; adding ROHAPECTB1L enzyme and ROHAMENTCL enzyme into the grinded protein; blending the mixture and statically standing; mixing the potato pulp with the soybean pulp; treating the mixture under 6-7 atmospheric pressures at 136-150 DEG C; performing subdivision treatment and homogenization on the mixture and then adding COROLASE7089 enzyme and COROLASELPA enzyme to perform biochemical treatment; concentrating the obtained potato peptide stock solution; and then, processing the potato peptide stock solution, so that the potato peptide nutrient is prepared.

The invention belongs to the technical field of agricultural product fresh-keeping, and specifically relates to a storage and fresh-keeping method of fresh peanut. The method comprises the following steps: preparing a preserving agent from polysaccharide obtained from sweet taro and algae, then mixing the preserving agent with dry river sand, evenly stirring until the water content of the river sand is 30-40%, burying fresh peanuts, which have been just dug out, into the river sand in layers, and placing a nano preserving agent during the process of peanut burying so as to complete the fresh-keeping and storage of fresh peanut. Through the technical scheme mentioned above, only several cents are increased in the cost for preserving one kilogram of fresh peanuts, the peanuts can be safely preserved for months or even half year or more, and the taste of the preserved peanuts is basically the same as that of fresh peanuts. The preserved peanuts can be sold in the slack season, and the profit can be increased by 2 to 3 times. The adopted preserving agent is completely green and harmless. The provided method is very suitable for simple peanut storage and processing in households in the peanut producing areas of China and is worth to promote.

The invention discloses a straight-through type in-situ remediation rod for river sediment pollution treatment. The invention belongs to the technical field of ecological environmental protection. Anin-situ remediation mode can be adopted. The remediation rod is directly inserted into the river sediment, natural wind is used as source power, and an internal and external isolation magnetic force guiding mode is used to transfer power into the remediation rod. Then, an aeration layer is extruded to release air in the aeration layer. Meanwhile, external air on the water surface is supplemented,the dissolved oxygen level of the river sediment area is continuously increased, therefore, the microbial action in the sediment is obviously improved, and the decomposition treatment on an ammonia nitrogen pollution source is accelerated. Meanwhile, a plurality of micro-nano bubbles can be slowly generated during aeration, the pollution treatment effect of the river sediment is comprehensively promoted by utilizing the enhanced decomposition and biological purification functions of the micro-nano bubbles on organic pollutants, secondary pollution is not easily caused, the treatment cost is relatively low, and the original river ecological environment is hardly influenced.

The invention discloses a composition for improving farmland soil nutrients and a preparation method thereof, which belong to the technical field of soil improvement. The composition comprises the following components in parts by mass: 48-55 parts of wormcast, 37-53 parts of pomelo residues, 33-45 parts of shell powder, 25-40 parts of gamma-polyglutamic acid, 28-50 parts of biomass charcoal, 18-36parts of a urease inhibitor and 6-15 parts of a microbial agent. Compared with the prior art, the composition has the beneficial effects that (1) all the components have a synergistic effect, so thatthe content of absorbable nitrogen and phosphorus in soil is increased; (2) organic matters in the soil are increased, bacteria in the soil are inhibited, and the self-repairing capability of the soil is improved; (3) the formula is simple, heavy metals, antibiotics and the like are not contained, release of nutrient elements of the soil is activated, potential risks do not exist, and the composition is safe to the ecological environment.

The invention provides an environment-friendly slow-release coated urea fertilizer and a preparation method thereof, the slow-release coated urea fertilizer comprises urea, an inner slow-release layer and an outer protective layer, the inner slow-release layer is a water-based copolymer-fly ash zeolite composite film, and the outer protective layer is palm oil. Weighing polyvinyl alcohol and deionized water, heating and stirring; cooling after the polyvinyl alcohol is completely dissolved, adding polyvinylpyrrolidone and a water-based acrylate emulsion, stirring at a constant temperature, adding fly ash zeolite powder after the polyvinyl alcohol and the water-based acrylate emulsion are completely and uniformly mixed, and continuously stirring to obtain a water-based composite solution; atomizing the water-based composite solution through high-speed hot air flow, uniformly spraying the atomized water-based composite solution on the surfaces of preheated urea particles, and ventilating and drying to form a slow-release layer; and spraying palm oil on the surface of the slow-release layer, discharging, and naturally cooling to obtain the environment-friendly slow-release coated urea fertilizer. The environment-friendly slow-release coated urea fertilizer disclosed by the invention integrates the functions of controlling nutrient release and retaining water, and is a fertilizer with the functions of controlling nutrient release, resisting drought, saving water and improving a soil structure.

The invention mainly relates to the technical field of planting, and discloses a method for promoting rooting propagation of a snakegourd fruit. The method comprises the following steps: (1) selecting root tubers; (2) preprocessing the root tubers; (3) propagating the root tubers; and (4) planting the root tubers. The method is simple; the snakegourd fruit germinates for 10-11 days during the rooting propagation, so that the germination time is obviously reduced; the planting survival rate is up to 100%; and about 11.7% of the planting cost is saved; roots of biennial male snakegourd fruits are picked, and the cut root tubers are short, so that the loss on the snakegourd fruit is obviously reduced; in addition, the snakegourd fruit root is high in biological activity, and high in environmental adaptability, so that the root tuber germination rate can be obviously increased and is up to 98.4%.

The invention discloses a bioremediation device for treating river pollution, which comprises a floating plate, an aquatic plant placement groove is formed in the upper end of the floating plate; a circular groove is formed in the side wall of the floating plate; a water wheel is rotatably connected to the inner bottom of the circular groove; one blade of the water wheel is made of iron; a water inlet and a water outlet which are communicated with the circular groove are respectively formed in two opposite side walls of the floating plate; a strip-shaped groove is formed in the side wall of the floating plate, a sliding plug made of magnetic materials is connected into the strip-shaped groove in a sealed and sliding mode, the sliding plug is elastically connected to the inner wall of the strip-shaped groove through a spring, and an air inlet pipe and an air outlet pipe which are communicated with the strip-shaped groove are fixedly connected to the floating plate. Air on the river surface is pumped into river water through kinetic energy of the river, the oxygen content in the river water is greatly increased, life activities of various aerobic microorganisms and other organisms inthe river water are promoted, then the decomposition speed of pollutants in the river is increased, and the bioremediation period is shortened.

The invention provides a method for reducing methane gas emission in a cow dung composting process, and relates to the technical field of livestock and poultry manure fermentation. According to the invention, cow dung and crop straw are used as basic materials, and highland barley straw biochar and / or wheat straw biochar are / is added for aerobic fermentation. The highland barley and wheat straw biochar is used as a conditioner for aerobic composting, so that the stacking density of a compost body is reduced, the air permeability is increased, the compost quality is improved, and the composting process is accelerated; and emission of methane can be reduced to a certain extent, the life activity of beneficial microorganisms is enhanced, and the compost maturity is accelerated.

The invention discloses a preparation for improving anaerobic fermentation efficiency of organic solid waste and a preparation method and application of the preparation, and belongs to the technical field of organic solid waste treatment. The preparation for improving the anaerobic fermentation efficiency of the organic solid waste comprises immobilized bio-enzyme, co-metabolism nutrient substances and organic macromolecules. The composition and structural characteristics of organic solid waste are utilized, the enzyme activity and stability are improved in an enzyme immobilizing mode, macromolecules in the sludge are converted into micromolecules, life activities of anaerobic microorganisms in the sludge are promoted through co-metabolism of nutrients, organic matter difficult to decompose is degraded, and finally, through flocculation bridging of the organic macromolecules, the stability of a sludge community and the stability of sludge of a reaction system are improved, so that the targets of recycling and reducing organic solid wastes are achieved.

The invention discloses a method for changing the permeability of a coal seam by using hydrogen-producing acetogenic bacteria. The method is suitable for being used in a low-permeability coal seam. Firstly, a nutrient solution of the hydrogen-producing acetogenic bacteria is injected into the coal seam in a drilling and hydraulic fracturing mode, then hole sealing operation is carried out, the hydrogen-producing acetogenic bacteria injected into the low-permeability coal seam produce acetic acid and hydrogen, macromolecular organic matter in coal serves as a substrate for life activity of the hydrogen-producing acetogenic bacteria to be converted into the acetic acid, a substrate is provided for methanogens in the coal seam, and the methanogens are promoted to generate methane; waste liquid flows back to the ground through reverse drainage, meanwhile, the permeability of the coal seam is also increased under the corrosion of the acetic acid and the extrusion action of the generated hydrogen and methane gas; and coal bed gas in a coal bed is extracted. The method is easy to implement and low in investment, a single strain is easy to amplify and culture, the reaction process is also controllable, and the influence on the stress distribution condition of a mine is small.

The invention particularly discloses a water-retaining slow-release fertilizer based on carboxymethyl chitosan and a preparation method thereof. The method relates to synthesis of a polymer slow-release fertilizer and a preparation process of a water-retaining agent. A polymer fertilizer is successfully introduced into a water-retaining agent network in a physical blending manner. A linear polymerslow-release fertilizer synthesized by taking urea, formaldehyde and monopotassium phosphate as raw materials serves as a nutrient source and is physically wound in a water-retaining agent network, and the nutrients can be diffused into soil along with moisture to provide moisture and nutrients necessary for crop growth. The fertilizer overcomes the defects of complex preparation process, high cost and the like of a double-coating coated fertilizer, has the advantages of simple preparation process and low price, and can be widely applied to desert vegetation.

The invention discloses bio-filler for absorbing and degrading hydrophobic organic waste gases, and a preparation method of the bio-filler. The bio-filler is prepared from the following raw materials:modified iron-based beta-cyclodextrin, diatomaceous earth, biochar, ceramsite, calcium oxide, silicate inorganic gel and water. The preparation method of the bio-filler comprises the following steps:dissolving the modified iron-based beta-cyclodextrin and the calcium oxide to obtain sol A; evenly mixing the diatomaceous earth, the biochar and the silicate inorganic gel to obtain powder B; dipping the ceramsite into the sol A for 5min, then placing the product in a drum granulator for granulating together with the powder B, spraying the sol A in the granulation process so as to obtain preliminarily-cured gel granules, and curing to obtain the bio-filler for absorbing and degrading the hydrophobic organic waste gases. The bio-filler prepared by the method can be widely applied to various types of organic waste gas biological purification systems, and enables the hydrophobic organic waste gases to more easily penetrate a wet water film on the surface of the filler and be in contact withmicroorganisms so as to enable the hydrophobic organic waste gases to be subjected to efficient catalytic degradation.

The invention discloses a high-yield cultivation method for Chinese yams. The method comprises the following steps that 1, seeds are selected, wherein the Chinese yams which are full in block terminalbud, smooth, slender and free of pest and disease damage and scar and has the stems with the thickness being 2 cm or above are selected, and the upper ends of 16-20 cm are cut out to serve as the Chinese yam seeds; 2, the seeds are dried in the sun, wherein the Chinese yam seeds obtained after disinfection are placed in the sun for drying; 3, a Chinese yam field is selected, wherein the field which is flat, high and dry in terrain, deep and fertile in soil layer, loose, air permeable and smooth in drainage and has the soil being sandy soil or sandy loam is selected as the Chinese yam field; 4, base fertilizer is applied, wherein 100 kg of bio-organic fertilizer, 50-80 kg of compound fertilizer of potassium sulfate (18-18-18), 25-30 kg of urea, 30-50 parts of potassium sulfate and 30-50 kgof nitric acid diamine are applied to the Chinese yam field per mu; 5, sowing is conducted, wherein the Chinese yam seeds are picked for the last time one day before sowing, when sowing is conducted,the Chinese yams are placed in seed furrows with the row spacing being 25 cm, and it is proper to sow 2,500-2,800 plants per mu; 6, topdressing is conducted, wherein topdressing is conducted in time,and after tubers are full, topdressing is stopped for soil. Accordingly, it is guaranteed that the yield of the Chinese yams is greatly increased, and the economical benefit of farmers is increased.

The invention discloses a preparation method and an application of biosynthesized composite organic trace elements. The method comprises the following steps: (1) separately preparing every single bacterial liquid; (2) preparing a mixed bacterial liquid from all the bacterial liquids prepared in step (1); (3) adding a composite inorganic trace element material to a carrier material to prepare a fermentation substrate; (4) mixing the mixed bacterial liquid with the fermentation substrate to obtain a material to be fermented; and (5) performing sealing fermentation on the material to be fermentedto obtain the composite organic trace element material. An application method of the prepared composite organic trace element material is characterized in that 2.5-5 wt% of the composite organic trace element material is added into a conventional diet feed free from trace elements in order to prepare a compound feed. The composite organic trace elements prepared in the invention can improve the absorption and utilization ratio of trace elements, reduce the addition amount of trace elements in the feed, reduce the pollution of the emission of trace elements to soil, improve the production performance of animas and reduce the breeding cost.

The invention discloses a plant active easy-to-decompose environmentally-friendly mosquito-repellent enzyme and a preparation method thereof, and the plant active easy-to-decompose environmentally-friendly mosquito-repellent enzyme comprises two parts, one part comprises daphne odera essential oil, allicin, chamomile essential oil, methyl chavicol, limonene, caryophyllene, volatile oil of artemisia argyi leaves, flavonoids of artemisia argyi leaves, amino acids, vitamins and other invalid organic compounds which are obtained by obtaining from Common jasmin orange leaves, washed waste citrus peel, fresh garlic flakes, Agastache rugosus leaves, clove leaves and artemisia argyi leaves by use of the vital action of a Thermomonospora curvata microbial inoculum, a corn smut microbial inoculum and an aerobic sliding slime mold microbial inoculum, extracting with water, ethanol and ethyl acetate, and applying with a strong magnetic field. The other part is mixed nutrient powder composed of bean cake powder and corn starch, and wood candida mycoderma bacteria is also cultivated in the nutrient powder. The plant active easy-to-decompose environmentally-friendly mosquito-repellent enzyme haswide sources, low cost, detailed and easy manufacturing process, quick effect, long-lasting effect, environmental protection, no pollution and easy decomposition.