73results about How to "Growth restriction" patented technology

The invention discloses slow-release fertilizer with the effect of soil remediation, which is prepared by polyhydroxyalkanoates which can be completely biodegraded, organic and inorganic nutrients and other substances, by slow-releasing the organic and inorganic nutrients, microorganism propagation and sustained and rapid growth of plants can be promoted, the bioactivity and water solubility of polycyclic aromatic hydrocarbons are quickened, and simultaneously, the defects of fertilizer loss and repeated fertilization can be avoided, thereby saving the cost and enhancing the soil remediation efficiency. The invention also discloses a soil pollution remediation method by utilizing the slow-release fertilizer, plants with the remediation effect are planted in the soil with the slow-release fertilizer, and efficient, environment-friendly and sustained remediation of the soil polluted by the polycyclic aromatic hydrocarbons (PAHs) can be realized by utilizing the microorganism-plant remediation technology.

The invention relates to a method for connecting an aluminum alloy and steel by a laser filler wire, which is suitable for the field of dissimilar material connection and particularly suitable for the connection between dissimilar materials of which fusion points and thermal physical properties differ from each other greatly. The method comprises the following steps of: assembling a lap joint in which an aluminum plate is arranged on a steel plate, wherein a laser beam, a wire feeding nozzle and a protective gas nozzle are fixed in the same plane, the laser beam is vertically incident, and a laser focus, a wire dropping point of a welding wire and a protective gas feeding point are guaranteed to be consistent during welding; and melting the fed aluminum welding wire by using the laser to ensure that the molten aluminum welding wire is in fusion connection with the aluminum plate, simultaneously a micro fusion layer is formed on one side of the steel plate and then a fusion-braze welding connection is formed, thus the lap joint between dissimilar metals such as the aluminum alloy and the steel is realized. The method improves the connection efficiency between the dissimilar metals such as the aluminum alloy and the steel, and the tensile strength of the joint is over 149.6N/mm. The method solves the problems of long preparation time, low automation degree and poor reproducibility of welding results in the process of connecting pre-coated layers of the dissimilar materials such as welded-aluminum and the steel.

The invention discloses a Chinese medicinal herb additive for meat ducks and application. The Chinese medicinal herb additive comprises adenophora, nutgrass galingale rhizome, amur corktree bark, coptis root, medicated leaven, sanguisorba, hawthorn, Indian Buead, officinal magnolia bark, largehead atractylodes rhizome, tangerine peel, malt, indigowoad root, swordlike atractylodes rhizome, indigowoad leaf, cyrtomium fortune, chatoyancy and calamus; and mixture of the compositions is added with calcium bicarbonate, phytase, mulitivitamin for birds and lysine. The Chinese medicinal herb additive effectively promotes absorption of nutrient, can resist bacteria and virus, strengthen immunity of the meat ducks, effectively prevents bird flu, has obvious curative effect on diseases having respiratory tract symptoms as the major symptom, and has inhibiting function on familiar newcastle disease, colon bacillus, Pasteurella, enteritis, diarrhea, feather pecking, hair shedding, anus pecking, coccidiosis and the like. The additive cannot restrict the growth and disease resistance of the meat ducks, the meat quality of the meat ducks fed by the additive is obviously better than that of the meat ducks fed by the prior feed additive, the average daily gain of the meat ducks is improved by 22 to 29 percent than that of the meat ducks fed by the prior feed additive, the cultivation cycle is obviously shortened, and no harmful substance is deposited.

The invention discloses a Chinese herbal medicament feedstuff additive for fattening pigs and application thereof. The additive comprises the following components: atractylodes rhizome, chatoyant, fleece-flower root, unprocessed lumber, hawthorn, medicated leaven, Chinese stractylodes, dried tangerine peel, astragalus, malt and white peony root. Various pertinent components of the additive adopt the strong points of each other and cooperate with each other after compatibility; the obtained additive has the functions of strengthening the stomach and promoting digestion, activating blood circulation and dispersing stasis, ,claming and smoothing the nerves and improving immunity, and effectively promotes the absorption of nutrients to accelerate growth and fattening and enhance pig disease resistance; therefore, the additive can increase the economic benefits of livestock breeding and does not generate side effect and hazardous substance residue, thereby doing no harm to people who eat the pork; moreover, the feedstuff additive has small dosage and does not restrict the growth and the disease resistance of live pigs to ensure that the quality of the pork is obviously better than that of the live pigs fed by the prior feedstuff additive; in addition, the additive increases the average daily gain of the live pigs by 24 to 28 percent as compared with the prior additives, and ensures that the marketing time is reduced by 12 to 16 days, namely fully fattened live pigs can be delivered even less than 100 days.

The invention relates to a method for using composite microbe and nanometer composite carrier to treat the gas with bad smell, and relative device. The box of biological filter is divided by several upright baffle plates, which contains microbe nourishment storage pool, a liquid level controller, a porous baffle plate, a nourishment spray tube, and a nourishment circulate pump, while the bad smell flows in the box to contact with the nanometer composite mineral carrier stacked on the porous baffle plate, to degrade the object via the microbe group on/in the nanometer composite mineral carrier into the material without toxicity and harm, as water, carbon dioxide, nitrogen gas and sulfur. And the invention uses the bad smell object as the carbon source, energy source, nitrogen source and sulfur source of microbe to realize circulation, save cost and reduce nourishment consumption. The invention has simple structure and low cost, while the LQ-SSB composite microbe group and nanometer composite mineral carrier have high stability and efficiency.

The invention discloses a preparation method of a carbon nanotube metal symbiotic material. The preparation method comprises the following steps: (1) after a metal source and a carrier are mixed, deionized water is added, impregnation is carried out for 2-4 h under ultrasonic treatment, filtering is carried out, obtained filter residue is washed for three times through deionized water, then dryingand calcination are carried out, a metal-based catalyst is obtained, or the metal source is directly calcinated, and the metal-based catalyst is obtained; and (2) the metal-based catalyst is placed into a reactor, inert gas is introduced firstly for replacement, then reducing gas is introduced, the reducing gas stops being introduced till heating is conducted to 500-800 DEG C, then a carbon source is introduced, reacting is carried out for 1-5 h, the inert gas is introduced again, the temperature is decreased to be the room temperature under the atmosphere of the inert gas, and then the carbon nanotube metal symbiotic material is obtained. According to the preparation method, a carbon nanotube grows on metal particles, uniformity of the tube diameter of the carbon nanotube and the metal particles can be ensured, the diameter of the finally prepared material is about 500 nm, and good catalytic performance is achieved.

The invention discloses fertilizer application formulas for different growth stages of garlic. The different fertilizer application formulas for six stages including a planting stage, a seedling stage, a flower bud and bulb differentiation stage, a pedicel elongating stage, a bulbus expansion stage and a quiescent stage are respectively provided according to characteristics of demands of plants to fertilizer in different stages during a garlic growing process, application proportions of azophoska in each stage is controlled, on one hand, the growth of garlic in each stage is promoted, limitation to plant growth caused by less application of a fertilizer can be avoided, and cost increase caused by fertilizer waste due to excess application of a fertilizer can also be prevented, and on the other hand, the garlic grown-up period is shortened, garlic can enter into market in advance and has a stronger superiority of price competitiveness; garlic yield and quality are enhanced due to reasonable fertilizer application and allocation in different stages, the ripening period is shortened, fertilizer cost for the process of garlic planting is reduced, the selling price is higher, and a strong practical signification is achieved.

The invention provides a cultivation method of bending trunk type dwarf crape myrtle. The cultivation method of the bending trunk type dwarf crape myrtle includes: adopting a multiple trunk twisting method to thicken a main trunk in spring, selecting 2-3 varieties of crape myrtle lateral buds different in flower color and plump in middle, and cutting bark of rootstock into a T shape; inserting bud pieces, wrapping Wanan kaolin around the bud pieces and fastening the bud pieces with a plastic film belt for bud grafting, unbinding the plastic film belt after grafting buds survive, and cutting off portions of the grafting buds, above the rootstock; stretching scions on a portion one third the stem height of a tree trunk after the scions start to grow, and leaving a left outside skeleton branch on a corner; leaving a second skeleton branch on a portion two thirds the stem height of the main trunk, and enabling the second skeleton branch to grow towards the low right outside; performing pinching at the top of the main truck, and leaving two skeleton branches on the left side and the right side of the main truck; applying multiple effect filing once in a germination stage; duly applying phosphate fertilizer and potash fertilizer to the crape myrtle and slightly applying nitrogenous fertilizer in May and June; cutting tips two thirds or one half the length of a skeleton main branch in April, and cutting stubbed flowers and young fruits along with 3-4 leaf burls after flowers fall; performing trimming and curling, and manufacturing small or mini bending trunk type bonsai after 2-3 years of time.

The invention relates to the technical field of lithium metal negative electrodes, and in particular relates to an elastic lithium metal negative electrode surface modification layer, a preparation method thereof and a negative electrode. The raw materials comprise, by weight, 1 to 3 parts of elastomer material and 5 to 10 parts of inorganic material. The elastomer material and the elastomer material are mixed to form a modified layer with the thickness of 1 to 50 microns. An artificial SEI layer is constructed through organic and inorganic mixing. Compared with a single-component artificial SEI layer, the mixed layer has obvious synergistic effect. An inorganic phase provides mechanical strength to prevent the growth of Li dendrites. An organic phase provides elastic deformation ability and relaxation resilience to maintain the integrity of the SEI layer during the cycle. Solvent-free preparation is achieved during a preparation process, which improves the stability of lithium metal,and reduces the production cost and environment pollution.

The invention provides fluid nutrient medium for large-scale cultivation of termitomyces albuminosus mycelium and application thereof. The culture medium is prepared from the following materials in parts by weight: 50-70 parts of lignocellulose powder, 30-50 parts of water, 0.0001-0.1 part of monopotassium phosphate, 0.0001-0.1 part of sodium chloride, 0.0001-0.1 part of calcium chloride, 0.0001-0.1 part of cobalt chloride, 0.0001-0.1 part of magnesium sulfate, 0.0001-0.1 part of manganese sulfate, 0.0001-0.1 part of ferrous sulfate, 0.0001-0.1 part of copper sulfate, 0.0001-0.1 part of zinc sulfate, 0.0001-0.1 part of aluminum potassium sulfate, 0.0001-0.1 part of ammonium tartrate, 0.0001-0.1 part of boric acid, 0.0001-0.1 part of citric acid, 0.0001-0.1 part of formic acid, 0.0001-0.1 part of acetic acid, 0.0001-0.1 part of fumaric acid, 0.0001-0.1 part of succinic acid, 0.0001-0.1 part of propylene-1,2,3-tricarboxylic acid, and 0.0001-0.1 part of guaiacol. The termitomyces albuminosus of the fluid nutrient medium disclosed by the invention is customized, and can be used for large-scale indoor cultivation of termitomyces albuminosus mycelium by using lignocelluloses; and the fluid nutrient medium is low in cost and high in yield.

The invention belongs to agricultural intensive production techniques and discloses a method of three-dimensionally preventing and controlling tomato bacterial wilt. The method includes: applying microbial organic fertilizer, containing antagonist QL-18, to the roots during a tomato seedling phase, and injecting NJQL-A6 agent to stems of the tomato before transplanting. The method has low cost and production process is simple; the antagonist QL-18 colonizes at the roots of the tomato in quantity, competes with bacterial wilt pathogen for root sites and releases antibiotic substance to suppress growth and augmentation of the bacterial wilt pathogen; the NJQL-A6 agent breeds and augments at the stems of the tomato, competes with the bacterial wilt pathogen for nutrition, and suppresses growth of the bacterial wilt pathogen; potting and field tests show that the efficiency of controlling tomato bacteria wilt by injecting the NJQL-A6 vaccine to the steps and applying the QL-18 containing microbial organic fertilizer to the roots is insusceptible to seasons and is stably kept above 70%.

The invention discloses a turnip pickling method in the technical field of turnip pickling. The turnip pickling method includes the steps: firstly, washing turnips with clean water after removing root hair and stems; secondly, placing the washed turnips into water solution made of acetic acid and white granulated sugar for soaking and draining; thirdly, placing the drained turnips into a pickling tank for sealed pickling; fourthly, closing a cover plate after placing the turnips and filling the pickling tank with nitrogen through an air inlet hole; fifthly, taking out the pickled turnips, and desalting, draining and shredding the pickled turnips; sixthly, placing the shredded turnips in a pot and placing seasonings into the pot for seasoning; seventhly, packaging and warehousing the turnips after standing. The air inlet hole is formed in the top of the pickling tank, and an air outlet hole is formed in the bottom of the pickling tank. By screening and soaking the turnips before pickling and filling the pickling tank with the nitrogen in the pickling process, and growth of putrefying bacteria is suppressed while lactic acid bacteria growth and reproduction speed is increased, so that the content of nitrite in the turnips is reduced.

The invention provides a lithium ion battery, and an anode material and a preparation method thereof. The anode material of the lithium ion battery is compounded by CeF3 and carbon and has a chemical formula of CeF3/C, the carbon is porous carbon, and the CeF3 is positioned in the pores of the porous carbon. The lithium ion battery comprises an anode plate, a cathode plate, an isolating membrane and electrolyte, wherein the anode plate comprises anode materials, the isolating membrane is positioned between the anode plate and the cathode plate, and the anode material is the anode material of the lithium ion battery. The anode material of the lithium ion battery has the advantages of high initial charge capacity, high initial discharge capacity, high initial coulombic efficiency and good cycle performance. The lithium ion battery has the advantages of high energy density, good safety performance and low cost.

The invention provides a feed liquid mildew inhibitor with mildew inhibition and water retention efficacies. The feed liquid mildew inhibitor comprises, by mass, 25-50% of propionic acid, 10-25% of formic acid, 10-35% of propionate, 1-5% of a surfactant and 10-30% of water. When the liquid mildew inhibitor is used, the liquid mildew inhibitor is mixed and diluted with water according to a ratio of 1:(15-20), and the obtained solution is added to a feed. The liquid mildew inhibitor has a good sterilization effect, and can obviously reduces the quantity of moulds in the feed, so the moldy risk is reduced; and the addition (500-600g/t) of the liquid mildew inhibitor provided by the invention is substantially lower than the addition (1200g/t) of liquid mildew inhibitors frequently used in the present market.

The invention discloses a Chinese herbal medicine pig feed additive capable of resisting diseases and helping to digest, belonging to the technical field of feed additives. The Chinese herbal medicine pig feed additive capable of resisting the diseases and helping to digest is prepared from the following raw materials: ginsengs, crataegus pinnatifida bunge, schisandra chinensis, malts, sophora flavescens, stemona japonica, pomegranate barks, pine needles, cyperus rotundus, fennels, glycyrrhiza uralensis fisch, ligusticum wallichii, radix dipsaci, muskmelon bases, rhizoma corydalis, rhizoma cimicifugae, houttuynia cordata and ophiopogon japonicus. According to the Chinese herbal medicine feed additive, the problems that an existing Chinese herbal medicine feed additive has a single treatment function and has no synergistic disease-resisting capability, the digestion capability of pigs is poor, the anti-stress capability of pigs is poor, the utilization rate of a feed is low and the like are solved; and the growth speed of the pigs is improved, the immunity is enhanced, the disease-resisting capability is improved and the meat quality also can be improved.

The invention relates to the field of fertilizer and particularly relates to dried organic sludge fertilizer and a preparation method thereof. The dried organic sludge fertilizer is prepared from thefollowing raw materials in parts by weight: 100 parts of dried sludge, 2-10 parts of quick lime, 15-30 parts of auxiliaries, 2-10 parts of phosphoric acid, 1-5 parts of an active microbial agent and 10-20 parts of earthworm cast. The preparation method comprises the following steps: weighing the components in the raw material proportion; putting the dried sludge, quick lime and auxiliaries into akneading machine, performing uniform stirring, and performing aging; putting the aged mixture in a disk grain making machine, spraying phosphoric acid into the mixture in a granulating process, performing neutralizing, jetting a fermentation inoculant into the mixture, and keeping on granulating; and putting the granulated granules into a fermenting tank, performing aerobic fermentation for 15-30days, and uniformly stirring the granules with the earthworm cast to obtain the dried organic sludge fertilizer. According to the dried organic sludge fertilizer, a great number of organic matters, trace elements and the like contributing to plant growth can be generated through assistance of quick lime, auxiliaries and other additives by sufficiently utilizing massive nutrition contained in the sludge, and the activity and nutrition of organic fertilizer can be improved. Furthermore, the preparation method is simple, and materials are wide in sources and low in cost.

The invention discloses a preparation method of a rare earth substituted yttrium iron garnet crystal. The method includes the steps of: respectively weighing Y2O3, Re2O3 and Fe2O3 in molar ratio according to Y(3-x)RexFe5O12, conducting grinding and briquetting, and then carrying out solid-phase reaction to obtain a polycrystalline material block; crushing and grinding the polycrystalline materialblock, and adding a fluxing agent to obtain a mixed material; putting the mixed material into a crucible, putting the crucible into a crystal growth furnace, performing heating to a set temperature, and conducting heat preservation to obtain a high-temperature solution; then changing the relative positions of the crucible and a heating coil to enable the crucible to gradually move to a low-temperature area until the high-temperature solution is completely crystallized, stopping moving, and performing cooling to room temperature to obtain a crystal ingot; and removing the fluxing agent by adopting mechanical stripping or solution corrosion method to obtain the crystal. By means of the fluxing agent, the method provided by the invention effectively lowers the crystal growth temperature and reduces energy consumption, provides a driving force for crystal growth through vertical movement, promotes the growth of crystals, and can acquire the large-size blocky crystal.

The invention discloses a NiMn MOF and a preparation method and application thereof, nickel salt, manganese salt and organic acid/organic acid salt containing naphthalic acid are used as raw materials, deionized water is only used as a solvent, and a hydrothermal method is used for preparing alinear strip-shaped heterojunction composite MOF with Mn MOF growing on sheet-shaped Ni MOF. The NiMn MOFprepared by the method has the characteristics of controllable morphology and controllable composition. The method does not need to add a template or a surfactant, and has the advantages of low reaction temperature, simplicity and easiness in operation and control, environmental friendliness and the like.

The invention discloses a method for growing yttrium iron garnet crystals by adopting a composite fluxing agent. The yttrium iron garnet (Y3Fe5O12, YIG for short) crystal is an important magneto-optical material and is prepared by the following steps: accurately weighing, mixing, grinding and sintering raw materials to obtain a polycrystal material, crushing the polycrystal material, adding the composite fluxing agent, carrying out ball milling to obtain a mixed material, filling a crucible with the mixed material, heating the crucible filled with the material to a set temperature, keeping thematerial at the temperature to obtain high-temperature molten crystal solution, then carrying out slow cooling until the solution in the crucible is completely cooled and crystallized, conducting cooling to room temperature to obtain a crystal ingot, and removing the fluxing agent by adopting a mechanical stripping and chemical corrosion method to finally obtain the crystal. According to the invention, through the lead-free composite fluxing agent, environmental pollution caused by lead and the corrosion to a platinum crucible are greatly reduced, the growth temperature of the crystal is effectively reduced, and the bulk single crystal with a larger size can be obtained.

The invention discloses an unrestricted auxiliary nursery stock fixing frame, which comprises a fixing device, three supporting legs distributed in a circular array are fixed on the fixing device. Thefixing device is composed of a limit frame and a limit ring, and moving and buffering frames are distributed on the limit frame in an array. The moving and buffer frame is fixed between a connectingplate and an internal fixing plate. The moving and buffering frame is provided with a telescopic rod. The upper end of the telescopic rod is hinged on a first U-shaped plate, the lower end of the telescopic rod is hinged on a second U-shaped plate, and the outer part of the telescopic rod is sleeved with a spring. According to the invention, the moving and buffering frame can stretch and retract by using the telescopic rod and the spring after being extruded, and the first U-shaped plate and the second U-shaped plate are used to achieve rotation, so as to avoid the growth of the part locked bya locking rod. The growth of the nursery stock is facilitated. The position of the inner fixing plate can be adjusted by the combination of a screw rod and a thread pipe thread, so that the device can be used for different kinds of nursery stocks.

An organic fertilizer specially used for camellia oleifera trees and a preparation method thereof. The invention relates to fertilizers. The preparation method includes the steps of: performing steam explosion to branches and leaves of camellia oleifera to disorganize the fiber structures of the branches and leaves of camellia oleifera and promote decomposition of macro-molecular substances; and performing fermentation with oil tea cake, citric acid residue, kelp residue, bacillus subtilis, trichoderma and thermophilic actinomycete to prepare the organic fertilizer. The organic fertilizer is high in content of organic substances and amino acids, can effectively promote growth of camellia oleifera and improve rhizosphere environment of camellia oleifera, optimizes physical and chemical properties of soil and inhibit reproduction of pathogenic microorganism. Through steam explosion for clipping the branches and leaves of camellia oleifera, reasonable matching of the fermentation raw materials and control on moisture in the raw materials, the fermentation raw materials are more easy to decompose, which is beneficial to growth of microorganisms. In fermentation, the bacillus subtilis, trichoderma and thermophilic actinomycete are employed and can quickly reproduced, so that temperature of the fermentation raw materials is increased and a high-temperature microorganism flora can be quickly formed, thus accelerating decomposition of the raw materials and promoting formation of organic substances. The preparation method is suitable for producing the organic fertilizer specially used for camellia oleifera trees.

The invention discloses a denitrification method for waste water low in carbon nitrogen ratio, which comprises the following steps: inoculating aerobic granular sludge in a reactor, periodically running the reactor inoculated with the aerobic granular sludge according to the sequence of water feeding, aerating, precipitating, water draining and idling, and cultivating the aerobic granular sludge, wherein the time of aeration in the running process is shortened periodically; letting the waste water low in carbon nitrogen ratio to be processed to pass through the cultivated aerobic granular sludge, then carrying out denitrification on the waste water. According to the denitrification method provided by the invention, the reactor is run in a way of periodically shortening the time of aeration, so that nitrite bacteria of which the growth velocity is faster are favorably intercepted in the reactor, the growth of nitrobacteria of which the growth velocity is slower is restricted, and at the same time, aerobic denitrifying bacteria are enriched, thus, the phenomenon of shortened simultaneous nitrification and denitrification is favorably formed, and the denitrification efficiency of the waste water low in carbon nitrogen ratio can be greatly improved. The result of the embodiment of the application shows that the rate of denitrification of the application is improved by 250 percent on average in comparison with the average level of a conventional activated sludge process.

The invention relates to a feeding method for improving earthworm feces yield and quality, and belongs to the technical field of cultivation. The feeding method includes the steps: paving feed on the bottom layers of sieve trays; paving base soil on the upper surfaces of the feed; stacking a plurality of sieve trays; placing earthworms in the top sieve tray. The earthworms fed by the method are high in feces yield, feces is rich in nutrition, high in disease and insect resistance and rich in a plurality of constant and trace elements such as organic materials, calcium, phosphorus, potassium, selenium, iron, magnesium, manganese, zinc and more than ten kinds of amino acid, the feces is an ideal pure organic fertilizer, crops planted by the feces are full in particle, and vegetables, melons and fruits planted by the feces are good in taste.

The invention discloses a method for realizing evolution of various nano morphologies of zinc oxide. The method comprises the following steps 1, preparing a seed crystal layer, namely preparing a zincoxide seed crystal layer on a substrate by using a magnetron sputtering system; and 2, growing a zinc oxide nano microstructure on the prepared seed crystal layer, namely preparing a precursor solution from hexamethylenetetramine and zinc nitrate, then adjusting the pH of the precursor solution through ethanolamine and/or hydrochloric acid, and controlling a zinc oxide nano microstructure and thelike to grow on the seed crystal layer under different pH conditions on the basis of hydrothermal reaction. The method is beneficial to hydrothermal growth of zinc oxide with different morphologies,so that various substrates can be adopted; and the realized zinc oxide nanorod array, nanoneedle cluster and nanoneedle cluster can be respectively obtained by adopting the same precursor and proportion and only adjusting the pH value in the later period, so that the existing process steps and flows are greatly reduced, the operation is convenient, the controllability is strong, and the effect ofproportioning multiple morphologies at one time is realized.

The invention discloses an intelligent vegetable planting greenhouse. The greenhouse comprises a greenhouse body, automatic induction detection equipment, a spraying device, a carbon dioxide generator, an adjusting system and a central controller. The greenhouse body comprises a rear wall, side walls and a roof. A reservoir, a pesticide pool and a fertilizer pool are arranged at the outer side ofthe greenhouse body; the automatic induction detection equipment comprises a temperature and humidity sensor, a soil moisture content sensor, a carbon dioxide sensor and a high-definition camera; thespraying device is arranged on the roof and is respectively communicated with the reservoir, the pesticide pool and the fertilizer pool; the carbon dioxide generator is arranged in the greenhouse body; the adjusting system is fixed on the rear wall; the input end of the central controller is connected with the output ends of the temperature and humidity sensor, the soil moisture content sensor, the carbon dioxide sensor and the high-definition camera; and the transmission end of the central controller is electrically connected with the spraying device, the carbon dioxide generator and the adjusting system.

The invention discloses a microwave combustion synthesis method for a bulk nano-crystalline alloy. According to a target product, one or a mixture of two or three types of powder of metal powder, non-metal powder and metal oxide powder is selected as a raw material, a high energy ball mill is utilized to mix the raw material, the mixed powder is loaded into a steel mold and is pressed on a pressing machine, a well-pressed blank is placed into a crucible, the crucible is placed into a microwave oven to be heated, and a product is cooled to room temperature and then is taken out. The method hasthe advantages of simple process, short time consumption of microwave synthesis process, energy concentration, less energy consumption, no pollution, fully dense product, no pores, and fine and even crystal grains; the final size of the crystal grains can be controlled to 10nm; and the hardness, the strength and the plasticity of the bulk nano-crystalline alloy are greatly improved, and the obtained bulk nano-crystalline alloy also has excellent special physical properties such as light, electricity, sound, magnetism, and so on.

The invention discloses an anti-cracking zinc acrylate antifouling paint and a preparation method thereof, and the antifouling paint comprises the following raw materials by weight: 30-40 parts of zinc acrylate resin, 15-20 parts of a pigment, 10-15 parts of an organic solvent, 25-35 parts of a modified antifouling agent, 4-8 parts of an auxiliary agent, and 8-10 parts of amino silicone oil. The modified antifouling agent is mainly prepared by reacting modified graphene, modified montmorillonite, isopropanol, titanium tetrachloride, sodium citrate, a copper acetate solution, sodium hydroxide and hydrazine hydrate. According to the anti-cracking zinc acrylate antifouling paint and the preparation method thereof, the process design is reasonable, the operation is simple, the prepared antifouling paint not only has excellent bactericidal antifouling performance, but also has excellent flexibility and anti-cracking performance, can be applied to the field of marine antifouling, and has high practicability.