1426 results about "Nutrient solution" patented technology

The invention relates to the technical field of agriculture, in particular to a plant nutrient solution for saline-alkali soil improvement and a preparation method thereof. The invention relates to a preparation method of a plant nutrient solution for improving saline-alkali soil. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides and acid modified calcium-based montmorillonite; preparing humic acid chelated calcium magnesium powder; preparing a binary compound; and preparing the plant nutrient solution. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides from calcium nitrate tetrahydrate and aluminum nitrate nonahydrate, carrying out acid modification on calcium-based montmorillonite by using dilute sulphuric acid, purifying humic acid, and mixing with calcium chloride and magnesium chloride hexahydrate to prepare humic acid chelated calcium magnesium powder. Finally, the three components are added into pig excrement fermentation liquor to prepare a plant nutrient solution, an adsorption-replacement-leaching closed loop can be formed, the desalination and alkali reduction efficiency is remarkably improved, the soil structure is improved, the effect of synergistically improving the saline-alkali soil is achieved, and therefore plant growth is promoted.

The invention relates to the technical field of cultivation and planting devices, and discloses a three-dimensional cultivation and planting device with an atomization structure, the three-dimensional cultivation and planting device comprises a rack and a rotating column, the rotating column is rotatably connected to the inner wall of the right side of the rack through a bearing, a spur gear is fixedly connected to the rotating column, and a motor is fixedly connected to the outer wall of the left side of the rack; a spur gear is arranged on the rack and makes contact with a toothed chain, a hinge rod is fixedly connected to the outer wall of the side face of the toothed chain, an adjusting mechanism is arranged on the rack and comprises an auxiliary mechanism, the adjusting mechanism comprises an arc-shaped plate, and the arc-shaped plate is hinged to the outer wall of the side face of the hinge rod. In the invention, a nutrient solution is converted into vaporific particles through the atomizing nozzle frame and is directly sprayed to the root system of a plant, so that the root system efficiently absorbs water, nutrients and oxygen in a suspended state, a matrix or soil is not needed, the propagation of soil diseases and insect pests is reduced, the nutrient utilization rate is also improved, and healthy growth and high yield of the plant are facilitated.

The invention discloses a coal bed gas biological yield increase effect dynamic monitoring and evaluation method which comprises the following steps: arranging a multi-parameter sensor in a target coal bed gas well site, and collecting background data before bacterium injection; injecting a microbial bacterial solution and a nutrient solution into the coal seam according to the experimental design, and recording parameter information in the injection process; periodically collecting a gas production sample, and analyzing gas components; analyzing microbial community structure and abundance change in the water sample; combining the gas generation rate, the isotope characteristics and the microflora analysis result to identify a gas production path and calibrate a key functional flora; and constructing a mathematical model containing microbial activity, coal quality conversion and gas production efficiency, forming an evaluation index system, and outputting field process optimization suggestions based on the model. According to the method, a scientific basis is provided for dynamic optimization of the yield increasing process, and compared with a traditional laboratory method, the method can achieve systematic analysis of the in-situ microorganism process and quantitative evaluation of the gas production effect, and has good field adaptability and popularization value.

The invention provides a method for optimizing the proportion of industrial waste residues and a microbial composite curing agent, and belongs to the technical field of building materials.The method comprises the steps that the industrial waste residues are ground into superfine powder with the specific surface area of 350-450 m < 2 > / kg, meanwhile, bacillus is cultured at the temperature of 30-35 DEG C until the concentration of bacillus is 108-109 / mL, and a mixture is obtained; a pH meter and a dissolved oxygen meter are adopted to monitor the state of a microbial solution in real time, the aeration intensity and nutrient solution supplement are automatically adjusted according to critical value judgment, a composite curing agent is prepared according to the calculation proportion, the interface bonding strength and compressive strength are tested, and the curing effect is evaluated through a strength development equation and a durability prediction equation. According to the comprehensive performance indexes, the matching parameters are dynamically adjusted, the testing and adjusting process is repeated until the results are stabilized in the target performance interval for five continuous times, the final matching is determined, and the technical problem that the matching of the industrial waste residues and the microbial composite curing agent is difficult to accurately optimize is solved.

The invention discloses a deep-sea microorganism in-situ directional culture device, and relates to the technical field of deep-sea equipment, the deep-sea microorganism in-situ directional culture device comprises a microorganism culture cabin, a nutrient solution storage module, a bidirectional flow path assembly, an intelligent control module, a support assembly and the like; wherein the microorganism culture cabin consists of a flow channel, a flow choking block, a culture chamber, a movable small plate, a cabin cover and a sealing element, and the flow channel and the flow choking block form a structure based on a Tesla valve principle; through a bidirectional flow path assembly composed of a deep-sea high-precision metering pump, a deep-sea flow guide pump and the like, a nutrient substrate is injected in a reverse high-resistance mode to achieve efficient mixing, and seawater flows in a forward low-resistance mode to achieve environmental substance exchange; the deep-sea multi-channel switching valve is independently connected with the multiple sets of nutrient solution storage modules and the microorganism culture cabin, so that culture under various environmental conditions is realized; based on sensor data calculation and analysis, the starting and stopping time of the pump is intelligently controlled, the concentration of nutrient substrates in the microorganism culture cabin and the stability of environmental parameters are effectively guaranteed, and therefore in-situ culture deep-sea microorganism communities are controllable.

The invention discloses a multi-dimensional data monitoring and collaborative management and control method and system for a plant intelligent factory, and belongs to the technical field of collaborative control, and the method specifically comprises the steps: collecting multi-dimensional data of the plant intelligent factory in real time, the multi-dimensional data comprising plant physiological parameters, environmental factor parameters, nutrient solution parameters and equipment and operation state parameters, and based on the multi-dimensional data, constructing a dynamic multi-level causal association model among equipment, plant physiology, environment and operation, identifying a potential cooperative influence path in an abnormal state, and automatically performing cross-level management and control when an abnormality is detected or a growth process is predicted to deviate from a trend. The cross-level management and control instructions are distributed to an equipment level, a cultivation unit level and a workshop level according to levels, and multi-link linkage regulation and control are carried out on the intelligent plant factory; according to the method, by establishing a causal association and path cooperation mechanism, regulation and control are more accurate, flexible and adaptive, and the stability, resource utilization rate and intelligent level of plant production are effectively improved.

The invention discloses a fermentation process of citric acid residues, and relates to the technical field of organic acid fermentation. The fermentation process comprises the following steps: mixing and crushing citric acid residues and wheat bran according to a mass ratio of (4-5): 1 to obtain a mixed material; spraying an ammonia water solution, a magnesium sulfate solution and a zinc sulfate solution into the mixed material, adjusting the pH value to 5.0-5.5, sterilizing, adding a urea solution and a basic nutrient solution, and uniformly mixing to obtain slurry; aspergillus niger and saccharomycopsis fibuligera are mixed according to the spore number ratio of 100: 1, then sterile water is added, the mixture is stirred to be uniform, and bacterial liquid with the spore concentration of 1 * 10 < 7 >-5 * 10 < 7 > / mL is obtained; spraying the bacterial liquid to the surface of the slurry, performing aerobic culture for 40-48 hours under the conditions that the temperature is 30-35 DEG C and the humidity is 80-85%, then cooling to 25-30 DEG C, reducing the humidity to 70-75%, spraying methanol at the same time, and performing sealed culture for 5-6 days; performing drying; and the acid yield and the nutrient substance yield in the finally obtained fermentation product are obviously improved.

The invention discloses a high-yield gastrodia elata planting method based on Tilia brachypoda fungus material optimization and seed ramie stress resistance activation. According to the high-yield gastrodia elata planting method based on Tilia brachypoda fungus material optimization and seed ramie stress resistance activation, yield increase and quality improvement are achieved through fungus material composite strengthening treatment and a composite strain synergistic inoculation technology. The method comprises the following steps: (1) fermenting a tilia brachypoda substrate by lactobacillus plantarum and soaking in a nano-composite nutrient solution to form a high-activity bacterial material; (2) nitrogen-fixing bacteria, disease-resistant actinomycetes and armillaria mellea are mixed and inoculated according to the proportion of 3: 1: 1, nitrogen supply is improved, and the occurrence rate of black rot is reduced; 3) activating a GASA stress-resistant gene of the seed hemp through a pulsed electric field (5 kV / cm, 10 microseconds), and enabling the germination rate to reach 88.5% in combination with a calcium signal channel strengthening technology; according to the method, the yield per mu of gastrodia elata is increased by 30%-40%, the gastrodin content is increased by 30% or above, the chemical pesticide dosage is reduced by 55%, the strain passage purity is stable, the method is suitable for large-scale planting in multiple climate areas, and an innovative solution is provided for green production of traditional Chinese medicinal materials.

The invention relates to the technical field of plant planting, particularly discloses integrated landscape type planting equipment and a cultivation method, and solves the problems of more resource and energy waste and insufficient energy conservation of planting equipment in the prior art. The planting equipment comprises a three-dimensional planting assembly used for allowing plants to grow, an irrigation pipeline system used for allowing liquid for plant irrigation to pass through and a liquid supply system used for blending and supplying the liquid needed by the plants, and the liquid supply system is connected with the three-dimensional planting assembly. The irrigation pipeline system is connected between the liquid supply system and the three-dimensional planting assembly. The planting cultivation method comprises the steps of substrate selection, water source preparation, sensor calibration, plant seed broadcast sowing, soil covering, controller starting, automatic monitoring and environmental parameter adjustment, nutrient solution blending and adding into a water tank and the like. The device can be applied to household planting equipment or industrial batch planting equipment, and is energy-saving, efficient and environment-friendly.

The invention discloses a grouting anchor rod suitable for microorganism induced mineralization reinforcement and an application method of the grouting anchor rod. The grouting anchor rod comprises a sleeve, an anchor head, a hollow stop-grouting plug, an arch-shaped base plate and a nut, and the anchor head is detachably installed at the anchoring end of the sleeve. Through combination of the sleeve and the hollow anchor rod, grouting channels which work independently and do not interfere with each other are formed, grouting materials and biological nutrient solutions containing urease-producing flora are injected into drill holes, pore water around anchor holes and the injected nutrient solutions are used for inducing calcium carbonate to precipitate in an anchoring area, CaCO3 crystals are deposited on an anchoring interface, and the anchoring effect is achieved. Pores are filled, the bonding strength of slurry and rock soil is improved, an anchoring layer is effectively prevented from being stripped, and the interface bonding performance is enhanced; a microorganism induced mineralization technology and an anchor rod physical reinforcement system are combined, and structure-biology-environment multi-scale collaborative reinforcement is achieved; and macrostructure stability and microcosmic particle consolidation are unified, and the enhanced, lasting, stable and eco-friendly slope supporting effect is achieved.

The invention discloses an insect antibacterial peptide nutrient solution as well as a preparation method and application thereof, and belongs to the technical field of biology. Insect protein (fly maggot powder / hermetia illucens) and plant fiber (bran) are subjected to enzymolysis and then subjected to a pH gradient chelation process (5.0-7.0-8.5), metal ions (Fe < 2 + > / Mn < 2 + > / Zn < 2 + >) are added in stages for chelation, the chelation degree is larger than or equal to 91.4%, lentinan and alginate oligosaccharide are added for synergistic interaction, and finally the insect antibacterial peptide nutrient solution is obtained. Experiments prove that after the insect antibacterial peptide nutrient solution prepared by the invention is used for carrying out root irrigation treatment on plants, tomato yellow leaf curl virus or tomato spotted wilt virus can be remarkably prevented and treated, and the insect antibacterial peptide nutrient solution has high efficiency and persistence and conforms to the development direction of green plant protection.

The invention relates to the technical field of flammulina velutipes planting, in particular to a flammulina velutipes culture method and compost, which comprises the following steps: S1, preparing purple sweet potato water; the preparation method comprises the following steps: washing fresh purple sweet potatoes, mixing with water in proportion, boiling, cooling, filtering, and taking filtrate as purple sweet potato water for later use; s2, preparing a culture material; the raw materials comprise corncobs, rice bran, bran, cottonseed hulls, sugar beet pulp, soybean hulls, corn flour, brewer's grains, calcium carbonate and shellfish fossils. The preparation method comprises the following steps: weighing solid raw materials in proportion, stirring the raw materials in a stirrer for 10 minutes to obtain a mixture, uniformly mixing the mixture, adding the purple sweet potato water prepared in the step S1, fully stirring the mixture until the mixture is uniformly mixed, and controlling the water content of a final culture material to be 62-68% to obtain the culture medium. The purple sweet potato water is used for completely replacing tap water to serve as a culture material component, the purple sweet potato water is not only a solvent, but also a natural nutrient solution rich in anthocyanin, polysaccharide, vitamins and mineral substances, flammulina velutipes hyphae can absorb and convert the substances, and the anthocyanin content in sporocarp is remarkably increased.

The invention provides a nursing device for qiongzhuea tumidinoda young forest tending, and relates to the technical field of young forest tending. The moving mechanism is arranged on the annular guide rail; the adjusting mechanism is arranged on the moving mechanism, and the adjusting mechanism is connected with a spraying mechanism and a camera; the driving controller is arranged on the moving mechanism; the liquid supply mechanism is arranged on the annular frame, and the spraying mechanism is detachably connected with the liquid supply mechanism; the power supply mechanism is arranged on the annular frame and is electrically connected with the driving controller; the central controller is connected with a plurality of monitoring mechanisms, and the monitoring mechanisms are arranged on the two sides of the annular frame. The use efficiency of water, a nutrient solution and liquid medicine is greatly improved, resource waste and environmental pollution are reduced, operation can be carried out on complex terrains, precise, automatic and intelligent tending operation is achieved, and the labor cost and the labor intensity are greatly reduced.

The utility model discloses a seedling raising device for saffron crocus planting, which belongs to the technical field of saffron crocus planting and comprises a base, a seedling raising pot is fixedly mounted on the upper surface of the base, a solution tank is fixedly mounted on the side wall of the base through a bottom plate, an expansion component is arranged on the side wall of the seedling raising pot, and the solution tank is fixedly mounted on the bottom plate. A stirring assembly is arranged in the solution tank; according to the seedling raising device, by arranging the expanding assembly, a driving motor on a fixing plate and a water pump in a solution box are started at the moment, the driving motor drives a reciprocating lead screw to rotate on a supporting plate at the moment, meanwhile, a threaded sleeve drives a movable frame to do synchronous reciprocating motion, and the movable frame drives a spray head to do reciprocating motion on a seedling raising pot; the spraying area of the spray head is enlarged through the moving frame, the fertilizer nutrient solution can be evenly distributed on the whole seedling raising pot area through the moving spray head, seedlings in the seedling raising pot can effectively absorb the fertilizer nutrient solution, healthy growth of the seedlings is facilitated, and the cultivation quality of the seedling raising pot is improved.

The invention relates to the technical field of ecological restoration of a coal mine in an arid region, and discloses an ecological restoration method for a waste dump of the coal mine in the arid region. According to the method, a multi-parameter environment sensing model containing soil humidity, soil components, surface temperature, vegetation indexes and regional gradient data is established, and whether ecological restoration is started or not is judged according to the model. And selecting at least one of water, a nutrient solution or a soil conditioner as a restoration medium, and quantitatively conveying the restoration medium to a predetermined area through an independent conveying path isolated from natural rainfall. The recovery area is composed of an independently-arranged conveying pipe network, the water flow direction is dynamically judged according to the gradient of the area, and natural diffusion advantage position pipe section conveying is preferentially started. During conveying, the operation time period is determined according to the medium absorption rate, intermittent conveying is executed on the selected pipe section, and the average flow in each cycle is controlled not to exceed the system reserve capacity. And when the reserve is insufficient, conveying is suspended, operation information is recorded, remaining operation continues to be completed after the reserve is recovered, and closed-loop recovery control is achieved.

Disclosed are methods of producing nutrient solutions having unique isotopic fingerprints; methods of producing traceable plants; and methods of identifying the source of a traceable plant that does not rely on expensive artificially separated isotopes. Plants grown with these nutrient solutions will have unique isotopic fingerprints that will be difficult or impossible to counterfeit.

The invention discloses an application method of magnesium hydride in hydroponic seedling hardening of rubber trees, which comprises the following steps: improving Hoagland into a hydroponic nutrient solution, adding magnesium hydride into the nutrient solution, and adjusting the pH value; the method comprises the following steps: selecting rubber tree stable-period test-tube plantlets which meet plant height requirements, have roots, stems and leaves and are pollution-free; and taking out the test-tube plantlet from the test tube, cleaning the culture medium on the root system, soaking with a carbendazim solution, and putting into a nutrient solution for hydroponic seedling hardening. According to the invention, 5-20mg of magnesium hydride is added into each liter of nutrient solution, so that the solution is in a hydrogen-rich state, the seedling hardening survival rate is obviously improved, and the plant quality is improved. Compared with a control group, the optimal concentration has the advantages that the seedling hardening survival rate is obviously improved, and the seedling hardening survival rates under the temperature conditions of 25 DEG C and 20 DEG C are respectively improved by 30% and 11%; the plant height and the stem diameter are respectively increased by 11.86% and 13.33% at the temperature of 25 DEG C, and reach an extremely remarkable level. The method provides support for improvement of a rubber tree seedling raising technology.

The invention discloses an Aralia chinensis root system development optimization aeroponic cultivation control system and method, and particularly relates to the technical field of Aralia chinensis root system cultivation, the Aralia chinensis root system development optimization aeroponic cultivation control system comprises an aeroponic cultivation box, a high pressure output module, an atomization device, an oxygen supply module, a nutrient solution supply module, a multi-dimensional monitoring module and a control module; aralia root systems are placed in the grooves. And the high-voltage output module is used for providing stable high-voltage power. The nutrient solution is pushed by the high-pressure output module to form a dynamic flowing fog environment, and is matched with easily-adsorbed fog drops refined by the ultrasonic atomizer, so that the nutrient solution is more fully contacted with the root system under the cooperation of the oxygen supply module and the nutrient solution supply module, and the nutrient solution is aeroponically cultured in the whole process, is good in dissolved oxygen content, flows without corrosion, and can effectively promote the growth of the root system; in the growth accelerating link, seedling raising in spring only needs more than 20 days to complete root promoting and germination, compared with a traditional mode, the seedling raising period is remarkably shortened, and meanwhile the rooting rate and the germination rate are greatly increased.

The invention discloses a multi-stage biological deodorization system with double bacterium areas. The system comprises N circulating units formed by sequentially arranging desulfurization biological reaction zones and denitrification biological reaction zones according to the airflow direction, wherein N is greater than or equal to 1; the desulfurization biological reaction zone comprises a biological filler layer I, a desulfurization strain and a nutrient solution I, and the denitrification biological reaction zone comprises a biological filler layer II, a denitrification strain and a nutrient solution II; wherein the biological filler layer I and the biological filler layer II are respectively arranged at the middle parts of the desulfurization biological reaction area and the denitrification biological reaction area, the volume ratio is 1: 2, and waste gas enters from the bottom end of the system and flows back in the system. The biological deodorization system can obviously improve the deodorization efficiency and the system stability.

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a high-efficiency yield-increasing liquid fertilizer containing enzymolysis nereis and a preparation method thereof.The method comprises the steps that the nereis is cleaned and smashed, subjected to freeze-thaw cycle pretreatment and then subjected to enzymolysis through a compound protease preparation containing protease and chitinase under the alkalescence condition, and the liquid fertilizer containing the enzymolysis nereis and the chitinase is obtained; carrying out solid-liquid separation on the obtained enzymatic hydrolysate to obtain enzymatic clam worm liquid; the preparation method comprises the following steps: mixing urea, a phosphorus-potassium fertilizer, trace elements, potassium fulvate and polyaspartic acid in a preparation tank, and then adding an N-carbamoyl-L-glutamic acid-chitosan grafted copolymer and selenocysteine-alginic acid nanoparticles to obtain a nutrient solution; and finally, mixing the enzymolysis nereis solution with the nutrient solution and the plant growth regulator to obtain a finished product. Active substances in the nereis are fully released through a biological enzymolysis technology, the prepared liquid fertilizer has the functions of nutrition supply, physiological regulation and soil improvement, crop growth can be remarkably promoted, the yield can be remarkably increased, and high-value utilization of marine biological resources is achieved.

The invention relates to the field of intelligent regulation and control, and discloses a factory recirculating aquaculture intelligent control method and system fusing multi-source data. The method comprises the following steps: acquiring environmental chemical index data and microbial activity signal data to obtain a comprehensive real-time monitoring data set; if the dynamic change characteristic of the bacterial community structure indicates that the conversion rate is lower than a conversion threshold value, analyzing the coupling influence of an oxygen supply amount index and a nutrient solution proportion index to obtain an optimized adjustment parameter set; adjusting the balance between the nutrient solution dosage index and the buffer agent dosage index, and determining a final regulation and control scheme; according to the stable output value and the adjustment instruction, fusing the dynamic change characteristics of the bacterial community structure, processing real-time feedback circulation, and determining a system stable state index; and updating the bacterial activity model, judging whether the conversion efficiency reaches a target or not, and obtaining an optimized iteration signal. The problems that an existing system is difficult in interactive analysis, low in regulation and control accuracy, weak in data fusion and unstable in conversion efficiency due to state updating lag are solved.

The invention relates to the technical field of agricultural automation equipment, and discloses a water and fertilizer integrated irrigation device and method based on the Internet of Things and an intelligent strategy, and the device comprises a crop and environment sensing unit which obtains crop image information and environment parameters; the intelligent decision-making unit is used for generating a target irrigation strategy and fertilization concentration; the source water management unit is used for analyzing a water source before irrigation and providing water quality background information; the water-fertilizer synthesis and control unit is used for dynamically synthesizing and outputting a nutrient solution in real time by combining the target concentration and the water quality background; and the cloud management and optimization unit is used for collecting data of each unit and is used for storage, remote monitoring and management. According to the invention, an on-line spectrum analysis technology and a high-frequency pulse microfluidic technology are coupled, a real-time closed-loop control system for directly measuring chemical components is constructed, and high consistency of a digital decision instruction and the chemical components of a physically output nutrient solution is achieved.

A cultivating and planting device comprises a planting frame provided with a plurality of layers of planting areas, first conveying mechanisms are arranged in the planting areas in the length direction of the planting frame in an extending mode, and planting plates are arranged on the first conveying mechanisms; a conveying frame is arranged at one end or two ends of the planting frame, and a plurality of second conveying mechanisms corresponding to the first conveying mechanisms are arranged on the conveying frame; when the conveying frame is in butt joint with the planting frame, the first conveying mechanism and the second conveying mechanism are matched with each other to convey the planting plates in the conveying frame into the planting frame, or convey the planting plates in the planting frame into the conveying frame, or convey the planting plates in the planting frame from one end of the planting frame into the conveying frame at the other end of the planting frame. According to the cultivation and planting device, efficient and stable transportation of the planting plates between the planting frame and the transportation frame is achieved, meanwhile, stable operation of a nutrient solution circulation system is guaranteed, the production efficiency and the automation level of agricultural planting are greatly improved, and manual intervention and labor intensity are reduced.

The invention relates to the technical field of biological experiments, in particular to a strain sampling body, a transfer device and a method. The strain sampling body comprises a connecting part and a sampling part, the connecting part drives the strain sampling body to move through a mechanical arm, and the sampling part is used for dipping strains on the surface from a culture medium and moving into a nutrient solution to sink into the bottom to form a growth channel; the strain transfer device comprises a culture dish, a deep hole plate and a mechanical arm. The invention also provides a strain sampling and transferring method. According to the invention, a surface contact mode is adopted, so that full contact with strains can be realized; the density is higher than the concentration of a nutrient solution, and a growth channel can be formed when sinking, so that a starting point is provided for strain growth, complete transfer of sampled strains is ensured, residual waste of the strains is avoided, and efficient and accurate sampling is realized; the strain sampling body has various forms, materials, surface states and the like; sampling and transferring tasks of strains are indirectly completed through the strain sampling body, and the requirements of different experiments for strain treatment are met.

The invention relates to the technical field of fungus cultivation, in particular to a micro-ecological fungus cultivation cabinet which comprises a movable cabinet body, the interior of the movable cabinet body is divided into a cultivation chamber and a control chamber through a partition plate, and a multi-layer vertical cultivation frame driven by an annular driving chain, an automatic fungus stick taking and placing device and a nutrient solution filling device are arranged in the cultivation chamber; automation of mushroom stick carrying and nutrition supply is achieved, a carbon dioxide removal machine, an aerator, a cold and hot air blower and an industrial control host linked with an environment data acquisition module are integrated in a control room, and micro-ecological environment parameters such as temperature and humidity, oxygen and carbon dioxide concentration and the like in a culture room are accurately regulated and controlled. The equipment effectively simulates natural growth conditions of fungi, especially symbiotic fungi, through three-dimensional circulating cultivation and closed-loop environment control, solves the problems that a traditional cultivation environment is large in fluctuation, depends on manpower, is easy to pollute, is unstable in productivity and is low in space utilization rate, and realizes stable, efficient and clean industrial production of high-end edible and medicinal fungi.

The invention discloses a preparation method of a nano-liposome coated NAD amino acid nutrient solution, and relates to the technical field of liposome amino acid nutrient solution preparation, the preparation method comprises the following steps: S1, preparing raw materials: S1.1, preparing NAD amino acid; s1.2, lecithin: using pure natural lecithin from soybeans and eggs; s1.3, preparing sodium hyaluronate: adopting sodium hyaluronate with low molecular weight; s1.4, preparing an amino acid compound, wherein the amino acid compound contains a plurality of essential amino acids, including glycine, serine and lysine; according to the mask, when the NAD amino acid nutrient solution wrapped by the nano-liposome is applied to the mask, the mask can more effectively permeate into the deep layer of the skin due to the excellent stability and biological activity of the NAD amino acid nutrient solution, and sufficient nutrition and moisture are provided for the skin; meanwhile, due to the strong anti-aging effect, the mask can remarkably improve the skin texture, reduce fine wrinkles and wrinkles, and make the skin more compact, smoother and elastic.

The utility model relates to a cherax quadricarinatus larva cultivation system which comprises a larva cultivation tank extending in the length direction of the cherax quadricarinatus larva cultivation system. The hanging rope extends in the length direction, is arranged in the larva culture tank, is located on the upper side of a water body of the larva culture tank and is used for hanging cherax quadricarinatus larvae; the oxygen pumping device is used for pumping oxygen into the water body; the filtering device is used for circularly filtering water. The cherax quadricarinatus larvae are hung in the larva culture tank in a concentrated mode for cultivation, and intensive management and large-scale cultivation of the cherax quadricarinatus larvae are achieved. The volume of the water body in the larva culture tank and the filtering device is controlled and extremely limited, so that the use amount of a nutrient solution in the water body is reduced, low-cost nutrient enrichment is conveniently realized, the immunity and stress resistance of the cherax quadricarinatus larva are improved at low cost, and large-scale culture is facilitated.

The utility model relates to a plant water culture device, in particular to a plant large-scale water culture identification system. The large-scale plant hydroponic identification system comprises a nutrient solution tank, a solution supply pipeline, a solution return pipeline and a hydroponic tank, an overflow port and a drainage port are formed in the hydroponic tank and are both communicated with the solution return pipeline, the hydroponic tank is arranged above the solution supply pipeline and the solution return pipeline, and the solution return pipeline is communicated with the overflow port and the drainage port. And the water culture tank is communicated with the liquid supply pipeline through a liquid inlet pipe. By means of the large-scale plant hydroponic identification system and the hydroponic device system, salt and alkali comprehensive stress identification in the bud stage and the seedling stage can be carried out continuously, and the problem that the workload of stress environment control and large-scale identification in a test is heavy is greatly solved; and the design and material selection of the germination tank and the floating plate are more convenient for test investigation and data acquisition.

The invention discloses a domestication method for efficiently degrading tobacco waste to produce hydrogen by using mixed flora, which comprises the following steps: carrying out anaerobic enrichment domestication culture by taking manure compost as a bacterial source and cellulose prepared from tobacco waste as a core component of a domestication culture medium; the domestication culture medium contains cellulose, ammonium bicarbonate and monopotassium phosphate, and the cellulose concentration gradient is gradually increased without adjusting the pH value; stopping culturing when the hydrogen content in the biogas is reduced by 10%, transferring the biogas to a fresh domestication culture medium for passage according to an inoculum size of 10-20%, and continuously domesticating for 20-40 rounds; inoculating the domesticated mixed flora culture solution into a cellulose liquid fermentation culture medium containing microcrystalline cellulose, ammonium bicarbonate, monopotassium phosphate and a nutrient solution according to the inoculum size of 10-20%; the initial pH of the fermentation liquor is adjusted to 6.5-7.5, high-purity nitrogen is introduced to create an anaerobic environment, and hydrogen is produced through fermentation under the conditions of 35 + / -1 DEG C and 120 r / min. According to the method, flora is easy to culture, hydrogen production is efficient and stable, tobacco waste resources can be utilized, flora stability is high, adaptability is high, and strict sterile conditions are not needed.

The application provides a method for preventing and controlling plant aphids, and the specific steps are as follows: selecting plant germination seeds that have grown roots and the root length is 2-6 cm, applying a light cycle treatment of 8h light and 16h darkness in the growth process of the plant germination seeds; in the plant germination seeds, the seed sources include legumes and cruciferous vegetables; and in the growth process of the plant germination seeds, a boron-containing nutrient solution containing the following components is used: Ca(NO3)2.4H2O 4mM, KH2PO4 1mM, KCl 1mM, MgSO4.7H2O 2mM, K2SO40.5mM, FeSO4.7H2O 50μM, EDTA.Na2 50μM, MnCl2 10μM, ZnSO4.7H2O 5μM, CuSO4.5H2O 0.5μM, (NH4)6Mo7O 24 4H2O 1μM, H3BO3 35-70μM, CoCl20.5μM; the nutrient elements are applied according to the following steps: (1) the first boron-containing nutrient solution is used for 1-5d, and the concentration of all components in the first boron-containing nutrient solution is 20-30% of that of the boron-containing nutrient solution; (2) the second boron-containing nutrient solution is used for 6-15d, and the concentration of all components in the second boron-containing nutrient solution is 40-60% of that of the boron-containing nutrient solution. The method can effectively prevent and control plant aphids.