151results about How to "Guarantee sustainable development" patented technology

The invention relates to the technical field of plant protection, and discloses a method and device for early detecting crop pests based on multisensor information fusion. The method disclosed by the invention is used for detecting a crop pest condition through a model building stage, an information collecting stage, a characteristic quantity drawing stage and an information fusion and detection distinguishing stage. By using the method and the device, the shortage of purely depending on a single machine checking and monitoring method is overcome, relevant information of specific pests can beobtained from multiple aspects, multiple kinds of information can be fused for intelligent detection; and multiple kinds of information are subjected to demonstration check for mutual compensation byusing complementarity and redundancy of the information, and further the detecting and monitoring accuracy and efficiency of a field crop pest robot are improved.

The invention discloses an online monitoring system and method of a corrosion protection effect of oil well pipelines. The system comprises a remote control center (1), an in-situ online corrosion monitoring unit (2), a transmission optical fiber (3), a corrosion data collector (4), a sensor and a network cable (10), wherein the remote control center (1) is connected with the in-situ online corrosion monitoring unit (2), the in-situ online corrosion monitoring unit (2) is connected with the corrosion data collector (4) through the transmission optical fiber (3), and the corrosion data collector (4) is connected with the sensor through the network cable (10). The online monitoring system disclosed by the invention can determine the corrosion damage states of buried oil well pipelines, locate damage points of corrosion layers, and evaluate the aging state of corrosion protection layers to serve as the basis for formulating a maintenance scheme, and can determine the corrosion condition and rate of the oil well pipelines, predict the safe service lives of the oil well pipelines, can avoid potential hazards due to corrosion leakage, can optimize the optimum injection amount of a corrosion inhibitor and can evaluate the forced impressed current cathodic protection effect of the oil well pipelines.

The invention discloses a microbial inoculum for preventing the black shank and a preparation method thereof. The classification of production strain of the microbial inoculum is named as bacillus licheniformis GP13, and the preservation number is CGMCCNo.1699. The formulations of the solid medium and the liquid medium of the microbial inoculum are as follows: (1) the formulation of the medium of test tube slant is as follows: 3g of beef extract, 5g of soy peptone, 5g of glucose, 17g to 20g of agar and 1,000ml of distilled water are needed, and the pH is 6.8 to 7.2; (2) the formulation of the medium of liquid fermentation is as follows: 20g of soy peptone, 5g of sucrose, 2g of yeast extract paste, 1g of monopotassium phosphate, 0.02g of ferrous sulfate, 0.02g of zinc sulfate, 0.02g of manganese sulfate, 0.02g of magnesium sulfate, 1,000ml of water, 0.1 percent of peanut oil and 0.01 percent of an antifoaming agent, and the pH is 7.0 to 7.2. The result of the test proves that the invention has good application prospect for preventing the black shack.

The invention relates to a mining-method tunnel inner shield receiving construction method. The mining-method tunnel inner shield receiving construction method comprises the specific construction steps: 1. filling plain concrete into a mining-method tunnel and reinforcing; 2. pre-burying one circle of circular-arc steel plate on a second lining at the crossed position of the tunnel; 3. manufacturing a shield receiving frame in the mining-method tunnel; 4. carrying out water-sealing and grouting construction before receiving a shield; 5. controlling parameters in a shield receiving process; 6. receiving an annular segment and a circular-arc steel plate welded sealing steel plate; 7. carrying out grouting construction on a shield tunnel receiving section; and 8. manufacturing a well connector in the mining-method tunnel. According to the mining-method tunnel inner shield receiving construction method, a series of construction problems of engagement of a shield tunnel with the mining-method tunnel, manufacturing of a temporary receiving frame, water sealing before a shield is received, setting of construction parameters of the shield entering the mining-method tunnel, manufacturing of a well connector and the like when the shield enters the constructed mining-method tunnel under a complicated stratum working condition can be solved; developed construction process and construction technology, which are used for receiving the shield in the mining-method tunnel, are formed; the universality of sustainable development and application of underground shield tunnel engineering development is guaranteed.

The invention relates to an intelligent recognition system for small mammals (rats). The system comprises an automatic image acquisition system, an intelligent image recognition system and a real-time data transmission system, wherein after the automatic image acquisition system stores acquired images in a shooting mode in a storage module, the images are transmitted in real time to a computer server terminal via a network transmission system by a communication module of the automatic image acquisition system, the acquired images are recognized and matched via the intelligent image recognition system, captured small mammals (rats) are automatically sorted, and results are outputted. The system of the invention provides real-time and dynamic accurate data for a rat monitoring and rat harm prevention and control system, the traditional mode of direct capturing, manual recognition and classification and counting for a field ecological survey on the small mammals can be basically changed, invested huge manpower, material resources, and financial resources are further saved, and accuracy of survey data is further improved.

The invention relates to a manual fish reef device of an island-and-reef ocean fishing area and a distribution method thereof, belonging to the technical field of manual fish reefs and solving the technical problem of ensuring fishing resources in the fishing area. The method comprises the following steps: distributing trapping fish reefs in adjacent waters of each fishing point; and distributingproliferated fish reefs in external waters of the fishing area; and distributing grooming fish reef belts between each trapping fish reef and each proliferated fish reef and between the proliferated fish reefs. The invention improves ocean benthic environment and cultures habitat consciousness of fishes by various manual fish reefs so as to lock the proliferated and trapped fishes in the fishing area whenever possible and guide the fishes around each proliferated fish reef to swim to the trapping fish reef by the grooming fish reef belts. The device and the method can improve the fish-collecting effect and ensures the sustainable development of the ocean fishing area.

The invention discloses a master batch capable of fully and biologically degrading a plastic film and a preparation method thereof, and belongs to the field of high molecular films. The formula of the master batch comprises the following materials in parts by weight: 100 parts of starch, 2-9 parts of coupling agent, 8-18 parts of dispersing agent, 8-25 parts of polycyclolactone, 1-50 parts of polylactic acid, 8-15 parts of poly (hydroxybutyrate-hydroxyvalerate) (PHBV), 10-25 parts of plasticizer, 0.15-1.0 part of anti-tackiness agent, 0.15-1.2 parts of pro-oxidant and 1-15 parts of chemical precipitation promoter. The preparation method of the master batch comprises the three steps of: thinning the starch; mixing; and forming. The product provided by the invention has the advantages of high starch content, being a fast-growing and renewable resource, rich resource, low unit cost, high substitutability, obvious economic benefit and ecological benefit and capabilities of reducing the content of polycyclolactone, increasing polylactic acid and poly (hydroxybutyrate-hydroxyvalerate) (PHBV), improving product performance and meanwhile reducing cost.

The invention provides a seedling-cultivating substrate capable of preventing and treating soil-borne diseases and a production method thereof. The substrate is formed by compounding main material compositions, auxiliary material compositions and additives. The main material compositions comprise, by volume, 70-85% of cassava residues, 5-15% of peat, 5-10% of vermiculite and 5-10% of perlite. The auxiliary material compositions comprise, by weight part in the mixture of the main material compositions per cubic meter, 5-15kg / m<3> of sheep manure, 0.5-1.5 kg / m<3> of calcium nitrate, 0.5-1.5 kg / m<3> of slow release fertilizer and 2-4kg / m<3> of ferrous sulfate. 0.5-2.5 kg of solid penicillium inoculants, namely the additives are added in the combined main material compositions and the auxiliary material compositions per cubic meter by volume. The production method of the substrate comprises the steps of preparation of raw materials, the compounding process, adding of the additives and preparation of finished products. As proven by practical application, the seedling-cultivating substrate which is made of waste cassava residues as the major raw material and is capable of preventing and treating the soil-borne diseases is good in quality and low in cost, and the pollution-free seedling-cultivating substrate is provided for the sustainable development of agriculture.

The invention discloses a concrete high-efficiency expanding agent and a preparation method thereof. By being calculated according to weight percentage, the concrete high-efficiency expanding agent is prepared by mixing and grinding 55 to 65% calcined ardealite and 45 to 35% specially-made high alumina clinker; and the specially-made high alumina clinker is cement expansion clinker which is obtained by the grinding and calcining of 44% to 50% of bauxite and 56% to 50% of limestone. The invention adopts calcined phosphogypsum to replace natural anhydrite to prepare the concrete high-efficiency expanding agent, all the indexes of the obtained expanding agent conform to the requirements of JC476-2001 standard, 7 days limited expanding rate is more than or equal to 0.025%, and the dosing amount of the expanding agent is 6 to 8%; therefore, the invention not only fully utilizes industrial wastes, changes wastes into valuables, but also reduces occupation to field and pollution to the environment of the wastes, achieves the purposes of saving resources, protecting ecological environment and guaranteeing the sustainable development of national economy, simultaneously reduces the production cost of the expanding agent greatly, and has obvious economic benefit and good market prospect.

The invention discloses a bacillus subtilis microbial agent for preventing and curing alternaria alternate. The production bacterial strain of the microbial agent is classified and named as the Bacillus subtilis B75 with the preservation number CGMCC No.1700. The bacterial strain is moved to the inclined culture medium of a test tube and cultured with a constant temperature 30 DEG.C+ / -1 DEG C for 1-2 days to obtain a test tube strainThe test tube strain is cultured by means of liquid shake-flask fermentation for 30-36 hours to obtain liquid fermenting microbial agent or solid microbial agent. The experiment indicates that the microbial agent as a good application prospect for preventing and curing the alternaria alternate.

The invention discloses an method for simultaneously detecting 124 pesticide residues in tea leaves. The method is characterized by comprising the following steps: A) sample pre-treatment; B) mechanical testing solution treatment: rapidly performing a qualitative and quantitative determination analysis, taking an extract in A, and using acetonitrile for dilution and using liquid chromatogram-massspectrometry for determination; performing the accurate qualitative and quantitative determination analysis, adding high anhydrous sodium sulfate in an amino column, using an acetonitrile-toluene solution for prewashing the column before sample addition, when a liquid surface reaches top of sodium sulfate, rapidly absorbing an above mentioned sample extract to transfer to a purifying column, usingan acetonitrile-toluene solution for eluting pesticide, performing rotation condensation on all filtrates in water-bath at temperature of 45 DEG C to a nearly dry state, drying the material with nitrogen at the temperature of 30-35 DEG C, dissolving residues by an acetonitrile-aqueous solution, filtering the material through a 0.2 [mu]m microfiltration membrane, and performing liquid chromatogram-tandem mass spectrometry; and C) mass spectrometry: performing accurate qualitative and quantitative determination analysis on determination liquid in the step B) by a liquid chromatography-mass spectrometer.

The invention relates to a resource utilization method for pig farm biogas slurry. Fermented biogas slurry of a pig farm is sequentially subjected to links as follows: multi-stage aeration and filtration, inoculation and culture of photosynthetic bacteria, inoculation of cladoceran filter-feeding photosynthetic bacteria, collection of cladocerans, filtrate inoculation and culture of unicellular algae, inoculation of cladoceran filter-feeding unicellular algae, collection and treatment of the cladocerans, and recycling or emission of water up to the standard. In the treatment process, the photosynthetic bacteria are utilized to degrade organic matters in the biogas slurry and generate thalli firstly, then nutritive salts containing nitrogen, phosphorus and the like in water are absorbed by microalgae to generate algae, and eventually, the cladocerans are utilized for filter-feeding thalli and algae in the water in a non-selective manner. According to the resource utilization method for the pig farm biogas slurry, the photosynthetic bacteria, the unicellular algae and the cladocerans generated in the biogas slurry treatment process can be used for aquaculture and bait, and resource utilization of contaminants in the biogas slurry is achieved by the aid of the food chain; the method has the characteristics of low investment and energy consumption and capability of producing apparent economic and ecological benefits.

The invention discloses a method for simultaneously measuring 28 kinds of pesticide residues with gas chromatography-triple quadrupole tandem mass spectrometry. The method includes the steps of A, sample pretreatment, namely weighing fresh tea leaf powder and pouring the same into a centrifuge tube, adding 1% of an acetonitrile acetic acid solution, adding NaCl after homogenated extraction, and performing full shock blending and centrifugal stratifying prior to taking clear liquid on the upper layer for standby use; B, purification and interior label treatment, namely pouring the clear liquid on the upper layer into the centrifuge tube, purifying the clear liquid with QuEChERS and adding an interior label solution, and taking supernate for standby use after whirlpools shock and centrifugation; C, mass spectrometric measurement, namely subjecting the supernate in the step B to qualitative and quantitative analysis with the gas chromatography-triple quadrupole tandem mass spectrometry. With the method, the problem about measurement blank of the pesticide residues of tea leaves is solved, and the method has the advantages of high flexibility, good selection and high repeatability and accuracy, the 28 kinds of pesticide residues in the green leaves can be measured simultaneously, and the method is specially suitable for measurement analysis for large amount of samples.

The invention discloses a vulnerability assessment method of a city around an oil and gas pipeline, which comprises the following steps: firstly, selecting vulnerability assessment indexes from threeaspects of pressure, state and response; Step 2, based on the pressure-responsing PSR model, the vulnerability assessment index system of cities around oil and gas pipelines is established, which includes target layer, criterion layer, element layer and index layer. 3, calculate that weight of each index of the criterion layer, the element lay and each layer in the index layer in the evaluation index system; Step 4, evaluating the vulnerability of the cities around the oil and gas pipeline based on the weight of each index of each layer. The invention carries out vulnerability evaluation on the system through a specific index system, quantitatively processes the evaluation result, and accepts the test of practice, so that the evaluation result is more accurate and reliable, thereby enriching the vulnerability evaluation system of cities around oil and gas pipelines and deepening the theory of urban vulnerability evaluation.

The invention discloses a biological agent for controlling a tobacco brown spot. The production strain of the biological agent is sorted and named as Streptomyces globisporus AM6 and the preserving number thereof is CGMCCNo.1701. The prescriptions of the solid and the liquid mediums of the strain are as follows: (1) the incline medium of a test tube is as follows: 200g of fresh potatoes, 20g of dextrose, 17 to 20g of agar, 1000ml of distilled water as well as a natural pH; (2) the prescription of a liquid fermentation medium is as follows: 10.0g of bean powder, 20.0g of cane sugar, 2g of dipotassium hydrogen phosphate, 0.02g of green copperas, 0.5g of calcium carbonate, 0.05g of bitter salt, 1000ml of tap water as well as a natural pH. The invention is prepared into the biological agent by the test tube culturing of the strain and the fermentation culturing of a table concentrator. Test results show that the biological agent provided by the invention has excellent controlling effects on the tobacco brown spot.

The invention belongs to the technical field of fracturing fluids for fracturing stimulation in the process of oil field development, and in particular relates to a peptidomimetic type recyclable cleaning fracturing fluid, which is prepared from the following components by mass percent: 1% to 4% of thickening agent, 0.5% to 2% of potassium chloride, 0.1% to 1.5% of conditioning agent, and the balance of water. The problems that the existing fracturing fluid has large oil-water interfacial tension, the end back flow fluid cannot be effectively used, and a great threat is posed to the environment are solved, the peptidomimetic type recyclable cleaning fracturing fluid has the advantage of reducing the fracturing construction cost, and can be recycled and reused, and the end sewage can be used for profile modification and flooding; the peptidomimetic type recyclable cleaning fracturing fluid has the characteristics of no residue, easiness in gel breaking, good compatibility, low frictiondrag, low damage, and low interfacial tension, and achieves continuous mixing and sand fracturing construction; after the completion of fracturing construction, the back flow fluid can be reused for fracturing fluid preparation, and the end sewage can be used for profile modification and flooding, thereby ensuring green production and sustainable development of the oil field.

The invention discloses an urban greening vegetation intelligent management and control system on the basis of GIS (geographic information systems). The urban greening vegetation intelligent management and control system comprises a GIS platform portion, a soil humidity data collection portion and a water flow switch-on control portion. The GIS platform portion is provided with databases of vegetation coverage regions, vegetation species and soil humidity required by each type of vegetation by means of building; humidity and location information is uploaded to systems by the soil humidity data collection portion by the aid of a humidity sensor and a BDS (Beidou navigation system) receiver; the water flow switch-on control portion comprises a water pipe switch shell, springs, a barrier, a permanent magnet, a winding, a top cover, a relay and a communication antenna, the barrier can be pulled by the springs in normal states, water flow channels in the water pipe switch shell can be blocked by the barrier, the relay can be closed after switch-on signals transmitted by the systems are received by the communication antenna, magnetic force can be generated after the winding is powered on, the permanent magnet can be attracted to drive the barrier to move upwardly, the water flow channels can be exposed, and the vegetation can be irrigated. The urban greening vegetation intelligent management and control system has the advantages that intelligent vegetation irrigation can be intelligently managed and controlled, the urban information application levels can be upgraded, and the urban greening vegetation intelligent management and control system has important significance on urban sustainable development and social progress.

The invention discloses a recycling method for aluminum in aluminum air battery electrolyte and a system and belongs to the technical field of aluminum air battery recycling. According to the recycling method for aluminum in aluminum air battery electrolyte, aluminum in the electrolyte is recycled in the use and the circulation process of an aluminum air battery, by controlling a causticity ratioand a temperature gradient of the electrolyte, sodium aluminate in the electrolyte is decomposed into Al(OH3) precipitate, by taking solid Al(OH)3 as a raw material, metallic aluminum is prepared in the melting process, production difficulties are reduced, the process is simple, and the cost is relatively low; by adopting the recycling method, sodium hydroxide electrolyte is recycled after Al(OH)3precipitate is removed, Al(OH)3 is prevented from being deposited on the surface of an aluminum electrode, then the reaction activity of the aluminum air battery is not inhibited by Al(OH)3, and theservice life of the aluminum air battery can be prolonged; the system disclosed by the invention has low requirements on equipment and is applicable to large-scale production, Al(OH)3 is precipitatedto obtain the metallic aluminum which can be used as a cathode of the aluminum air battery, and the technical problem that sodium aluminate is convenient to convert into metallic aluminum at present,can be solved.

The invention provides a method for preparing slag-free PAC by means of a high-efficiency emulsification shear stirring technology. The method comprises the steps of acid dissolution, recapturing andemulsification shear stirring. The method has the advantages that waste alkali is used for replacing traditional bauxite resources, dust pollution is avoided, no secondary hazardous waste is generated, and the quality of products is ensured; the PAC is quickly prepared by means of the novel high-efficiency emulsification shear mixing technology, the operation is simple, the processing capacity islarge, the production cycle is short, the yield is high, the energy consumption is low, the equipment investment cost is low, and the cost is low. Regeneration and comprehensive utilization of resources including aluminum-containing sludge, waste hydrochloric acid and waste alkali are achieved, waste is turned into treasure, sustainable development of upstream enterprises is ensured, the production cost of the enterprises is saved, and double benefits of economy and environmental protection are achieved. The prepared slag-free PAC is pure, clear, stable in quality, good in fluidity and dispersibility and capable of achieving higher basicity, and the decolorization and turbidity removal capabilities of the PAC are 5-10% times higher than those of general PACs sold on the market.

The invention discloses a compound mud-rock flow discharge and guide trough comprising a main discharge and guide trough for the mud-rock flow body under a discharge design standard and discharge and guide trough buffer regions for the mud-rock flow body under the discharge ultra-design standard. The discharge and guide trough buffer regions are located on both sides of the main discharge and guide trough and the boundary of the drainage trough buffer regions are provided with gravity retaining walls. Compared with the prior art, the invention fully utilizes the dangerous regions (a mud-rock flow flooding region under the design standard of main ultra discharge and guide trough) on both sides of the main discharge and guide trough together with the main discharge and guide trough to form the compound mud-rock flow discharge and guide trough, can not only improve the discharge and guide ability of the mud-rock flow discharge and guide trough and enhance the protection capability of the discharge and guide trough on objects on both sides, but also effectively improve the land use ratio and benefit the relieving of the human-land contradiction as for towns and market towns in mountainous areas extremely lack of land resources, and ensure sustainable development in mountainous areas.

The invention discloses a comprehensive utilization method of nickel and iron slags and aims at utilizing waste resources and protecting environment. The method comprises the following steps: crushing and roasting nickel and iron slags, and obtaining an ammonia water solution; fully dissolving roasting products by water and then filtering so as to obtain a magnesium sulfate solution and filter residues; blowing carbon dioxide gas into a sodium silicate solution and carrying out carbonation so as to obtain a sodium carbonate solution and a filter cake; washing and drying the filter cake so as to obtain a white carbon black product; adding calcium oxide into the sodium carbonate solution, and causticizing so as to obtain a caustic soda solution and calcium carbonate residues; and returning the caustic soda solution back to a filter residue leaching procedure, and calcinating the calcium carbonate residues so as to obtain calcium oxide and carbon dioxide. Through an ammonium sulfate / ammonium bisulfate roasting-leaching technology, magnesium resources in the nickel and iron slags are recycled; iron and nickel in the enriched nickel and iron slags are leached through the alkalinity of the filter residues; and at the same time, silicon resources in the nickel and iron slags are recycled. Ammonium sulfate / ammonium bisulfate and caustic soda are cyclically used, and no pollutants are emitted in the whole technical process.

The invention relates to a nontoxic non-residual soil processing and biological organic fertilizer combination method for preventing and controlling cucumber fusarium wilt, and belongs to an agricultural intensive production technology. According to the method, liquid ammonia is utilized for fumigating and disturbing the original soil microbiologic population, and special bio-organic fertilizers are combined and applied, so the number of beneficial bacteria in the soil is increased, the number of fusarium oxysporum in the soil is reduced (the number of the fusarium oxysporum in the soil is smaller than or equal to 8.4*10<3> cfu per gram of soil, and when the number of the fusarium oxysporum in the soil is below 10*<4>cfu per gram of soil, the cucumber fusarium wilt can be effectively prevented and controlled), and a disease suppression type soil microflora is established. Test results show that after the soil which is subjected to continuous cropping for nine years, has higher cucumber fusarium wilt morbidity and nearly has no harvest is processed by the method, through comparison and contrasting, the morbidity is reduced by 88.5 percent, and the cucumber fruit yield is increased by 350 percent. The method provided by the invention has the advantages that the cucumber fusarium wilt can be effectively inhabited, and the sustainable development of intensive cucumber production is ensured.

The invention relates to a formulated fertilizer special for apple, wherein in the fertilizer, the weight percentages of the effective elements based on pure nutrient are as follows: 16-19% of nitrogen (N), 9-12% of phosphorus pentoxide (P2O5), 16-20% of potassium oxide (K2O) and reminder of excipient; the sum of the weight percentages of the total nutrients (N+P2O5+K2O) is 45. The invention provides a formulated fertilizer special for apple based on test results for many years according to absorption rule of growth and development of the apple tree for nitrogen, phosphorus and potassium. Compared with accessible fertilizers on the market, the formulated fertilizer special for apple has rational content proportion of the nutrient, fits absorption rule of the apple for the nutrients, notably satisfies requirement of each important development period of the apple for the nutrients, notably improves weight of single apple fruit and high-quality fruit rate, improves fruit quality and improves utilization rate of the fertilizer.

The invention relates to the technical field of preparation of novel paper, and specifically to stone paper and a preparation method thereof. The stone paper specifically includes the raw materials of coarse whiting, high density polyethylene, metallocene polyethylene, aluminic ester, polyethylene wax, stearic acid, an antioxidant, and EBS. A process flow is as below: first, evenly stirring coarse whiting and surface treatment agents ethylene wax, stearic acid and EBS, and a coupling agent aluminic ester together in a high-speed mixer through high speed stirring, and modifying the coarse whiting by using the surface treatment agents and coupling agent; then adding the high density polyethylene and metallocene polyethylene, and mixing by stirring; after combination of the above raw materials, conducting extrusion granulation, extrusion casting, three-roll press polish, biaxial tension and corona treatment on the polymer to obtain the stone paper. Biaxial tension process realizes the small difference of tear strength at vertical and horizontal directions of the paper material, and realizes the reduction of original paper density to expand the paper material area, thereby reducing the cost and increasing economic benefit.

The invention provides a method for killing Psa (pseudomonas syringae pv.actinidiae) in kiwifruit pollen. By adoption of ClO2 aqueous solution for treating the kiwifruit pollen, Psa in the pollen can be killed effectively while pollen activity is less affected; by killing of the Psa in the kiwifruit pollen, Psa propagation can be effectively controlled to reduce canker, and sustainable development of the kiwifruit industry is guaranteed. The ClO2 aqueous solution treatment method is combined with pollen suspension prepared before liquid pollination, and the ClO2 aqueous solution in an appropriate amount is added into the pollen suspension to kill Psa. Therefore, simplicity in operation, freeness of complex equipment and low cost are realized.

Belonging to the field of biotechnologies, the invention provides a molecular marking method for identifying a tea clonal variety of tea trees. The method includes the following steps of: 1) putting 1.0g of fresh and tender buds and leaves of a variety to be tested into a mortar, adding liquid nitrogen and grinding the mixture into powder, adding a CTAB buffer solution, conducting water bathing at a temperature of 65DEG C for 30-60 minutes, then adding a DNA extracting solution to obtain the genome DNA of the tea tree variety to be tested; 2) taking the genome DNA extracted in step 1) as a template, using SSR (simple sequence repeat) primers for PCR amplification, and subjecting the amplification product to 10% native polyacrylamide gel electrophoresis, thus obtaining an electropherogram of the variety to be tested; and 3) comparing the electropherogram of the variety to be tested with a standard tea tree variety electropherogram obtained according to the step 1) and step 2), and if the variety to be tested and the standard variety are consistent in band composition, determining the variety to be tested and the standard variety as an identical variety, thus obtaining the purity of the variety to be tested. Compared with other methods, the invention can reflect the genetic background and genetic relationship of tea tree varieties more truly. And the technology provided in the invention can be used as a scientific basis for identifying the authenticity of the tea tree varieties.

The invention discloses organic-inorganic compound fertilizer silkworm excrement and tobacco stems as organic raw materials and a preparation method of the organic-inorganic compound fertilizer and belongs to the technical field of agricultural soil fertilizer. The compound fertilizer is prepared from, by weight, 5-40 parts of the silkworm excrement, 5-40 parts of the tobacco stems, 10-50 parts of urea, 6-40 parts of monoammonium phosphate and 12-50 parts of potassium sulphate. The compound fertilizer comprehensive in nutrition contains organic nutrition of the silkworm excrement and the tobacco stems and macronutrient elements, and the fertilizer has effects of improving loose soil, improving the content of organic matter, passivating heavy metals in soil, increasing fertilizer utilization rate, reducing use of the fertilizer, bettering soil fertility, increasing crop output, improving crop quality, avoiding underground insect and threadworm, improving soil ecology environment and the like; the fertilizer is in accordance with the national policy of double-reduction in national chemical fertilizers, soil is improved, laborsaving and timesaving effect is achieved, requirements of sustainable agriculture are met, and good prospect in future agricultural application is achieved.

The invention discloses a code generation method, device and equipment and a storage medium. The method comprises the steps that model metadata is acquired, and the model metadata comprises at least two data types, a professional model, a logic model, a physical model and an incidence relation among the professional model, the logic model and the physical model; storing the model metadata into a meta-model which is of a library structure; obtaining target data in the meta-model through the integrated development environment; according to the technical scheme, the codes are automatically generated according to the target data, automatic generation and smooth upgrading of data service zero code maintenance can be achieved, the application of the framework lays a good foundation for continuous application of an informatization new technology, and sustainable development of an enterprise data service system is guaranteed.

Provided is an earthquake disaster risk pre-assessment method, which comprises the following steps: 1) extracting data about disaster-pregnant environment and hazard-affected bodies from new data sources of internet websites, social media and e-commerce; 2) analyzing characteristics in the data and dividing disaster grades into positive, middle and negative three grades, each grade being divided into 5 levels; and 3) result risk value= consequence value * exposure value* possibility / 50; and 4) according to the maximum membership degree principle, carrying out fuzzy comprehensive evaluation to obtain earthquake disaster grade levels. The method, fully taking multi-aspect influence factors of natural disasters into consideration, starting from big data, for the characteristics of the internet data and according to the data-centered principle, carries out grade division through a certain processing mode and constructs a risk grade system based on big data analysis, so that potential risk in data information can be found quickly, sustainable development of enterprises can be guaranteed favorably, decision efficiency is improved greatly, and key points are pointed out for the earthquake disaster prevention work.

The invention relates to a resource utilization method of intensive litopenaeus vannamei breeding wastewater. The method comprises the following steps: step one, performing filtering on wastewater discharged from an intensive litopenaeus vannamei breeding pond by using a slant filtering screen; step two, collecting wastewater after the filtering by the slant filtering screen into a wastewater storage pond; step tree, conveying the wastewater in the wastewater storage pond to a sunlight-shed microalgae proliferation pond for culturing microalgae; and step four, conveying the cultured microalgae water into a cladoceran or a copepod cultivation pond, and harvesting cladocerans or copepods for supplementing the baits of the litopenaeus vannamei breeding. The method has the advantages that with the help of a food chain of microalgae-zooplankton-prawn, cyclic utilization of nitrogen and phosphorus nutrient substances in the wastewater is realized, while the eutrophic breeding wastewater is purified, the breeding water environment is protected, and the natural baits for the intensified prawn breeding are supplemented, so that the feed cost of the prawn breeding is reduced, and the breeding benefits are improved.