69 results about "Transpiration" patented technology

The invention relates to the technical field of agricultural management, in particular to a smart farm environment regulation and control method and system based on big data analysis, and the method comprises the following steps: obtaining an instantaneous temperature value of the upper surface of a leaf and an instantaneous temperature value of the lower surface of the leaf through an infrared temperature sensor, obtaining an instantaneous value of stomatal conductance through a stomatal conductance sensor; and acquiring a water vapor pressure difference value of the air cavity through a water vapor pressure sensor, aligning a time sequence by adopting a multi-source data fusion algorithm, eliminating noise, and generating a dynamic physiological data set. According to the method, the leaf temperature difference, the air hole conductance and the air cavity water vapor pressure difference are collected, a real-time dynamic data set is constructed, a temperature difference amplification signal is extracted, transpiration enhancement triggering, wind speed increasing, water mist particle size decreasing and wind speed and particle size linkage regulation and control are analyzed in combination with the trend, a regulation and control weight is constructed by introducing multiple regression analysis, and the wind speed and the particle size are dynamically regulated according to the weight. A leaf temperature difference regression base line is guaranteed, the regulation and control accuracy and physiological adaptability are improved, and the environment self-adaptive regulation capability is enhanced.

The invention discloses an apple anthracnose leaf blight recognition five-dimensional data fusion method based on a patrol robot, relates to the technical field of anthracnose leaf blight recognition, and solves the problems of limited sensing dimension, large illumination interference and inaccurate spatial positioning in the prior art. Comprising the following steps: S1, acquiring surface curvature characteristics of apple leaves, collecting RGB-D images of the leaves, constructing a three-dimensional topological structure of the leaves, and positioning scab space distribution; s2, acquiring spectral reflection information of apple leaves, quantifying biochemical components of chlorophyll a and carotenoid, and constructing a vegetation index feature set sensitive to diseases; s3, apple tree canopy temperature information is collected, a transpiration anomaly detection model is constructed, and multi-modal fusion of thermal infrared and point cloud data is realized; and S4, integrating spatial distribution, spectral reflection and thermal radiation information, constructing a five-dimensional phenotypic characteristic matrix model, and comprehensively analyzing apple phenotypic characteristics. According to the method, the recognition accuracy under the conditions of blade shielding, uneven illumination, blade posture change and environment interference can be remarkably improved.

The invention relates to the technical field of photosynthetic carbon sequestration, in particular to a photosynthetic carbon sequestration data real-time monitoring system and method, and the system comprises an evapotranspiration gradient recognition module, a photosynthetic rate change capture module, a non-cooperative state judgment module, a carbon sequestration fluctuation trajectory extraction module and a monitoring stability output module. According to the method, the response time point of the evapotranspiration process to the illumination change is dynamically positioned by obtaining parameters such as stomatal conductance, leaf surface temperature, saturation vapor pressure difference and transpiration rate of a leaf layer, the time point of sudden change of the physiological activity is marked, and the change of the transpiration rate and the change of the net photosynthetic rate are compared according to the difference range between the change of the net photosynthetic rate and the change of the transpiration rate. According to the method, the non-collaborative evapotranspiration function state can be judged, the possible response imbalance situation between leaf photosynthesis and moisture adjustment can be effectively recognized, the recognition capacity for the dysfunction time period is enhanced, the time window with low output stability is screened, and the dynamic adaptability and abnormal response judgment capacity of carbon sequestration monitoring data are enhanced.

The invention discloses a breathable plant leaf biomimetic material with antifouling, self-cleaning and spectrum simulation properties and a preparation method of the breathable plant leaf biomimetic material. The breathable plant leaf biomimetic material can be applied to a base material through a two-step coating method. The first layer is a mesophyll-like porous dual-network hydrogel structure, hyperspectral pigment and moisture absorption salt are dispersed in the first layer, spectral characteristics of plant leaves in visible light and near infrared bands are simulated, and a water transpiration function controlled by plant pores is reproduced through a pore structure and a salt medium, so that stable spectral response and dynamic water exchange are realized; and the second layer is a leaf-skin-imitated coating, and has long-term stable antifouling and self-cleaning characteristics through a liquid-like super-smooth hydrophobic surface structure. The plant leaf spectrum simulation coating has anti-mud and hydrophobic properties, can still keep an excellent plant leaf spectrum simulation effect after being washed by rainwater, and can realize high-weather-resistance spectrum simulation.

The invention provides a municipal garden soil humidity intelligent regulation and control method which comprises the following steps: acquiring environmental characteristics of a target area, and constructing a plant collaborative water demand model according to the acquired environmental characteristics of the target area; continuously monitoring environmental characteristics of the target area, and inputting the environmental characteristics into the plant collaborative water demand model to obtain water demand data of the target area; the method comprises the following steps: collecting water demand data of a target area, constructing a plant irrigation water model according to the collected water demand data of plants in the target area so as to output the water consumption of the plants in the target area in a growth stage, and collecting multi-dimensional water demand data such as plant transpiration rate, stomatal conductance and in-vivo moisture content so as to obtain the water consumption of the plants in the target area. The model is built by combining the environmental parameters and the growth stage information, the specific water consumption of the plant in the current growth stage can be accurately output, the irrigation accuracy is greatly improved, and the negative influence on plant growth caused by insufficient or excessive irrigation is avoided.

The invention relates to the technical field of tropical agricultural planting, in particular to a method for planting pineapple-high-canopy crops on a steep-slope terrain in a low-latitude region. The planting method comprises the following steps: (1) transforming a terrain and interplanting, namely transforming a contour line terrace along the gradient direction, constructing a stepped planting belt, planting high-canopy crops in terrace ridges, and planting pineapples in the terrace surface; (2) complete-cycle photo-thermal management: the canopies of the high-canopy crops intercept direct light, and the pineapples utilize transmission light or diffused light; (3) water and fertilizer collaborative management: dividing a contour line terrace into multiple stages of irrigation areas according to the elevation difference, configuring an independent drip irrigation pipe network for each stage of irrigation area, monitoring the soil conductivity and the leaf surface transpiration rate in real time, and dynamically adjusting the fertilization amount; slow-release compound fertilizer is applied to high-canopy crops, and the application frequency is 4 times per year; the macroelement water-soluble fertilizer is applied to the pineapples by adopting pulse type drip irrigation, so that the fertilizing period of the pineapples and the fertilizing period of the high-canopy crops are staggered.

This application discloses a greenhouse water control method and system based on the root zone-plant-atmosphere system. The method includes: acquiring soil water potential, plant water potential, air temperature, and relative humidity information in real time through an information acquisition module; calculating atmospheric water potential based on the acquired air temperature and relative humidity; calculating transpiration pull and water supply power based on the atmospheric water potential, plant water potential, and soil water potential; determining the stomatal aperture of the greenhouse plant based on the ratio of transpiration pull to water supply power; and issuing control commands based on the stomatal aperture and the ratio of transpiration pull to water supply power to achieve water control of the greenhouse plant. The method adopted in this application is simple and efficient. By comprehensively controlling water based on the relative relationship between water supply power and transpiration pull, it can maintain the water supply and demand balance of the root zone-plant-atmosphere system, effectively reduce evaporation and conserve energy, and improve crop photosynthetic capacity, yield, and water use efficiency.

The invention belongs to the technical field of gene engineering, and particularly relates to a cornutgiella axataenae PdMYB44 gene and application thereof. The invention provides a cornutgiella dotacea PdMYB44 gene, wherein the CDS (Coding Sequence) of the PdMYB44 gene is as shown in SEQ ID NO. 1. The PdMYB44 gene disclosed by the invention is derived from the cornutgiium axataenense, so that the drought resistance of a transgenic plant can be improved, the flowering time is shortened, and the PdMYB44 gene can be applied to plant stress resistance genetic improvement. Results of embodiments show that according to a transgenic plant over-expressing the PdMYB44 gene, the proline content is increased, the malondialdehyde content is reduced, the transpiration rate and stomatal conductance are remarkably reduced, and the drought resistance of the transgenic plant is jointly improved by synergistically regulating three key mechanisms, namely accumulation of permeation protection substances, inhibition of membrane damage and optimization of stomatal behaviors.

The present invention relates to bacterial strain Bacillus nakamurai CECT 30581, a microorganism of the gram-positive group of bacteria, genus Bacillus, and the metabolic products resulting from fermentation in the culture medium, total metabolic liquid (TML), hexane fraction (HF) and hexane subfraction (HS), nitrogen, phosphorous, potassium and manganese absorption stimulants in plants, and atmospheric CO2 fixation and transpiration, even under conditions of water stress. Once this strain has been isolated from the rhizosphere of Pinus pinaster and characterised from a physiological and genetic standpoint, the TML is separated / extracted and the metabolites responsible for the effects thereof, such as a characterisation profile of the bacterial products for different uses, are identified. Both the bacterial strain and its compositions can be used as the basis for producing different preparations intended to optimise the photosynthetic process of plants, improving plant growth and production in adverse situations of drought or reduced irrigation water. They can also be used within the field of organic biofertilisers to improve mineral nutrition in the indicated nutrients.

The bacterial strain Arasana bacillus (CECT 30655) belongs to Gram-positive bacterial flora and bacillus subtilis, and is a stimulant capable of stimulating adaptive metabolism of plants to resist water stress, an improving agent for plant yield and nutrition and an improving agent for polyphenol content. The strain is separated from rhizosphere soil of pinus coast, is cultured on a nutrient agar culture medium (PCA), and is identified as a new strain from the aspects of morphology, biochemistry and genetics for identification through whole genome sequencing. Under a water stress condition, the strain can enhance CO2 fixation and transpiration, optimize photosynthesis energy capture and reduce oxidative stress, so that the strain can be used for increasing yield; as a biological fertilizer, nutrient absorption can be promoted no matter whether water stress exists or not; and the content of antioxidant polyphenols in plant species with medicinal or edible values can also be improved, so that the fruit quality is improved.

The application is the application of Spirodela and microorganisms in repairing cadmium-polluted water bodies and reducing cadmium content in cadmium-polluted paddy field rice grains. The specific steps are as follows: first, prepare Oscillospiraceae bacterial suspension, Enterobacter bacterial suspension and Pantoea bacterial suspension respectively; then mix the three kinds of bacterial suspensions in proportion to obtain a mixed bacterial suspension; then add the mixed bacterial suspension and Spirodela prepared in proportion to the cadmium-polluted water bodies to be repaired or the cadmium-polluted paddy fields to be repaired, and the Spirodela and the microorganisms form a "Spirodela-functional bacterial community" symbiotic system; the microorganisms further transport cadmium to the leaves by adsorption, transformation, leaf surface sedimentation or transpiration; finally, the Spirodela is concentrated for treatment, thereby repairing the cadmium-polluted water bodies or reducing the cadmium content in the cadmium-polluted paddy field rice grains. Through the application, the cadmium-polluted water bodies can be better repaired, and the cadmium content in the cadmium-polluted paddy field rice grains can be effectively reduced.

The invention discloses a medium and late maturing corn precise cultivation method and system based on density regulation and control, and particularly relates to the field of agricultural plant cultivation environment control. A difference value is generated by collecting plant spacing information, a leaf area index is compared with a photosynthetic parameter, the growth state of crops in a region is judged, and water supply is adjusted according to the growth state; the cultivation density is optimized in combination with real-time environmental parameters, finally, the corresponding relation between the water demand and the cultivation density is converted into irrigation regulation and control, and accurate management of the corn in the dynamic environment is achieved. According to the method, through step-by-step difference calculation, parameter comparison and matching adjustment, the cultivation space distribution is balanced, and the problem caused by local over-density or over-sparse is avoided; through crossover operation of the leaf area index, the photosynthetic rate, the transpiration rate and the temperature, dual matching of the health index and the density is formed; through difference comparison of moisture and density correlation, dynamic adjustment of the irrigation amount is achieved, moisture distribution among plants is more reasonable, and the accuracy of cultivation management is improved.

The invention relates to the technical field of communication, in particular to a heat dissipation device and augmented reality equipment. In the embodiment of the invention, the heat dissipation module comprises the heat dissipation body and the liquid core, the liquid core is constructed to be of a bionic plant leaf structure, and the liquid core is provided with a branch structure of bionic plant veins and a plurality of bionic air holes, so that the liquid core has the transpiration heat dissipation effect of bionic plant leaves. The heat dissipation module, the condensation module, the first transmission part and the second transmission part are connected to form a circulating heat dissipation system, after a heat source of the augmented reality equipment works and emits heat, heat conduction liquid absorbed in a liquid core can rapidly absorb heat and evaporate, and the gaseous heat conduction liquid is transmitted into the condensation module through an air outlet cavity and the first transmission part for condensation and heat dissipation. The condensed heat conduction liquid is transmitted into the heat dissipation module through the second transmission piece and the liquid inlet cavity. In this way, efficient and reliable heat dissipation can be achieved while a compact space is adapted.

The invention discloses a method for reducing the noon break proportion of citrus stomata based on moisture regulation and control, and particularly relates to the technical field of fruit tree physiological regulation and control. The method comprises the following steps: acquiring a citrus leaf stomatal opening time sequence G (t) and a leaf water potential parameter psi (t), and constructing a stomatal activity response model M1; setting a target noon time period, and calculating a pore closing proportion; establishing a moisture regulation response model M2 according to the soil moisture content and the transpiration rate, and predicting psi (t) changes under different irrigation conditions; inputting the psi (t) output by the M2 into the M1, predicting the influence of different moisture regulation and control strategies on the theta m, and selecting an optimal irrigation scheme to control the target irrigation time, water volume and frequency; dynamic iterative optimization is carried out through theta m actual measurement and a model self-learning mechanism, and accurate moisture management and pore behavior regulation and control are achieved; the method has high adaptability, intellectualization and self-evolution ability, the noon stomata closing proportion can be effectively reduced, and the photosynthetic efficiency and the fruit tree yield are improved.

The present application relates to the technical field of plant salt tolerance screening, and discloses a multi-parameter screening analysis method for salt-tolerant aquatic plants, which comprises the following steps: obtaining initial baseline data; injecting sodium chloride solution and calculating root system maintenance index and its first-order time derivative, locking the environmental salinity when the derivative reaches a negative threshold value and recording the root system response anchor point; calculating canopy transpiration index and its first-order time derivative under the condition of salinity locking, recording the canopy response anchor point when the derivative reaches a positive threshold value; calculating the dynamic time delay between the two anchor points and the cross-correlation coefficient of the two indexes; extracting the root system steady-state characteristic value, constructing a joint feature vector with the dynamic time delay and the cross-correlation coefficient, and outputting the salt-tolerance mechanism classification. The present application dynamically anchors the cross-organ response time sequence through the derivative of physiological parameters, converts local physiological data into global space-time coordination features, and realizes the fine and objective classification of different plant salt-tolerance mechanisms.

The invention provides a planting cavity system integrated with an airflow regulation and control function and a planting method thereof.The side portion of a planting cavity body is provided with an air inlet used for being connected with an air inlet system; a top panel of the planting cavity main body is provided with a first air hole communicated with the air inlet, and the first air hole is used for guiding air to the position above the panel so as to blow air to plant canopies; a second air hole communicated with the air inlet is formed in the inner wall of the supporting cup on the top of the planting cavity body and used for guiding and pressing air into the plant growth substrate in the supporting cup. The matrix is compressed through the second air holes, oxygen can be actively supplied to plant roots, waste gas generated by breathing of the roots can be exhausted, air is blown to plant canopies through the first air holes, gas exchange inside and outside the canopies and the transpiration effect of plants can be promoted, zero emission of waste liquid and disease blocking are achieved through evaporation, and the yield of plants is increased. The plant health degree and the system biological safety are comprehensively improved.

This invention discloses a modeling method for predicting cucumber photosynthetic rate using a BP (Backpropagation) model that integrates transpiration rate, relating to the fields of smart agriculture and machine learning. The method includes: continuously monitoring the photosynthetic physiology of cucumber plants in the fruiting stage under greenhouse cultivation conditions to obtain photosynthetic monitoring characteristic data; normalizing the photosynthetic monitoring data and dividing it into training and testing sets; constructing an initial BP neural network as an experimental model, using the coefficient of determination, adjusted coefficient of determination, and root mean square error as evaluation indicators to determine the optimal transfer function combination of the hidden and output layers of the experimental model; optimizing the experimental model using Bayesian optimization and five-fold cross-validation with the root mean square error as the optimization objective to determine the optimal hyperparameter combination of the experimental model; and remodeling the experimental model based on the optimal transfer function combination and the optimal hyperparameter combination to obtain a cucumber BP photosynthetic rate prediction model integrating transpiration rate.

The invention discloses a method for regulating and controlling boron to be transported to the overground part of a plant by utilizing a photoperiod, which comprises the following steps: cleaning seeds, cultivating seedlings, preparing a growth solution and supplementing light for cultivation, and is characterized in that the boron is transported to the overground part of the plant by utilizing the photoperiod on the basis of a synergistic effect mechanism of photoperiod regulation and control-transpiration tension enhancement-boron element transportation. By implementing daily light supplementing treatment in the growth period of the seedlings, the photosynthesis efficiency of the plants is remarkably improved, and the problem of plant growth stagnation caused by top end necrosis due to boron deficiency can be effectively avoided. Moreover, by accurately improving the transportation efficiency of boron in the plant body, the application amount of the boron fertilizer can be reduced, accumulation and residue of boron in soil are reduced, agricultural non-point source pollution can be relieved, and the environmental risk is reduced. Under the adverse conditions of drought, salt and alkali and the like, effective transportation and supply of boron can still be maintained, normal growth and development of plants are guaranteed, and adaptability and stability of crops in a non-ideal environment are improved.

The present invention discloses a water and fertilizer monitoring method for soilless cultivation of rose cut flowers. The method comprises: measuring the fresh weight and dry weight of the rose cut flowers in one growth cycle, and measuring the fresh weight, dry weight and leaf area of ​​the upright branches in one growth period of the rose by using a destructive sampling method. A stem flow meter is used to monitor the real-time transpiration rate and water potential changes of the rose plants, calculate the water utilization rate and dry matter accumulation of the soilless cultivated plants, measure the nitrogen content of the plants by the Kjeldahl method, and obtain the fertilizer requirement of the plants. The real-time data measured by the stem flow meter and the fertilizer requirement of the rose are transmitted to a cloud database. This method adopts three repetitions, the first two for model establishment (measured values), and the third for model verification (simulated values). A fertilizer and water management plan is formulated in combination with the rose model simulation analysis results, and then the soilless cultivation matrix is ​​accurately regulated for water and fertilizer. The present invention can carry out water and fertilizer integrated precision irrigation for roses, which is of great significance for guiding the soilless cultivation production of roses.

The invention discloses application and method for promoting tobacco photosynthesis by using a root specific promoter and an HMA3 gene, and belongs to the field of plant genetic engineering, a gene expression cassette pRCc3-HMA3-OCS is constructed by using the root specific promoter pRCc3 and the HMA3 gene of rice, the overexpression of the rice HMA3 gene in tobacco is driven by using the root specific expression promoter pRCc3, and the tobacco photosynthesis is promoted by using the HMA3 gene. The plant height and leaf area of the overground part of the tobacco under normal or stress conditions are obviously improved, the photosynthetic efficiency, transpiration speed and stomatal conductance of the tobacco can be obviously improved, and photosynthesis of the tobacco is promoted, so that the photosynthetic yield of the tobacco is improved; more theoretical bases and application values can be provided for regulating and controlling the leaf growth and improving the photosynthetic efficiency of tobacco and other commercial crops with harvested leaves.

The application provides a kind of intelligent pruning and water management synergic control method and system of fruit tree cultivation, belong to cultivation management technical field, this method includes: based on the thermal infrared image sequence of the leaf surface of different directions of fruit tree canopy, the transpiration rate change of each direction leaf is extracted, and the initial time of local water stress of corresponding direction leaf is identified;When the time difference of local water stress initial time between any two direction leaves reaches the preset stress threshold, a thinning pruning scheme is constructed;After completing thinning pruning according to the thinning pruning scheme, the global recovery slope in the preset period after pruning and the global attenuation slope in the stressed period before pruning are calculated from the transpiration rate change curve of the whole canopy of fruit tree to obtain the water compensation priority coefficient;Based on water compensation priority coefficient, irrigation control is executed.The technical scheme provided by the application can solve the problem of pruning and irrigation synergy failure caused by the deviation of canopy hydraulic zoning and whole plant average diagnosis.

The invention particularly relates to a method for determining a drainage key growth stage of farmland crops in a plain area, which relates to the technical field of farmland water management, and comprises the following steps: for each sampling moment, carrying out series superposition on canopy transpiration resistance and soil-root system interface resistance obtained by calculating soil water potential time sequence data; according to the method, micrometeorology and root zone soil water potential time sequence data are integrated, canopy transpiration resistance is calculated based on the energy balance principle, soil-root system interface resistance is connected in series and superposed to obtain the total transmission resistance of an SPAC system, then resistance abnormal events are analyzed and recognized through continuous wavelet transform multiple time scales, and quantitative scoring is achieved in combination with growth stage division. Through standardized processing, scientific threshold setting and a comprehensive scoring mechanism, the waterlogging risk difference of each growth stage can be accurately captured, the key drainage time period and the risk level are determined, accurate data support is provided for farmland drainage regulation and control, and water resource waste caused by blind drainage and crop output reduction caused by untimely drainage are avoided.

The invention discloses a salvia miltiorrhiza hole tray factory substrate seedling raising method. The method comprises the following steps: a) preparing a substrate; b) hole tray treatment; c) seed pretreatment; d) sowing and accelerating germination; e) culturing by stages; f) seedling hardening and outplanting. According to the seedling raising method for the salvia miltiorrhiza hole tray factory substrate, through a layered substrate structure and precise temperature and light control, the emergence rate and the seedling rate are greatly increased, a light-temperature cooperation strategy is adopted, low light and low temperature are achieved in the first stage, the transpiration effect is reduced, long growth caused by water roots (water absorption > transpiration) of salvia miltiorrhiza seedlings is avoided, strong light and carbon enrichment are achieved in the second stage, and the light saturation point is increased under the high CO2 concentration; accumulation of secondary metabolites (salvianolic acid) is accelerated, the seedling raising efficiency is improved, the seedling raising period is shortened, early-stage soil-borne diseases are blocked through seed coating agent enveloping, fungal spores are killed through KMnO4 plug tray disinfection, pythium propagation is inhibited through matrix low-EC value management, and the infection resistance of seedling cell walls is enhanced through regular spraying of KH2PO4, so that a disease and insect pest prevention and control closed loop is achieved.

This invention relates to the agricultural field, specifically to a method for preparing and applying a carbon dioxide fusion element trap. It addresses the problem that polymeric film-forming agents added to foliar fertilizers easily form a continuous, dense, and impermeable physical film on the leaf surface, making it difficult for carbon dioxide to enter, interfering with normal photosynthesis and transpiration, and thus causing abnormal leaf metabolism. The method involves immersing mesoporous silica microspheres in a PEI solution to obtain PEI-loaded microspheres, then adding a solution of gelatin, chitosan, glycerol, and glutaraldehyde to deionized water to form a composite gel base solution. Finally, selenomethionine, seaweed oligopeptides, and yeast extract are mixed with the composite gel base solution in warm water to obtain the carbon dioxide fusion element trap. This invention, through careful material selection and structural design, cleverly achieves a balance between strong adhesion and high permeability, allowing it to firmly adhere to the leaf surface and eliminating the defect of clogging leaf stomata.

The invention discloses a method for detecting the water age of a plant based on a tracer technology. The method comprises the following steps: collecting an undisturbed soil sample from a sampling site and making the undisturbed soil sample into a test undisturbed soil column; adding one tracer agent into water to prepare a tracer agent solution; plants are planted in the undisturbed soil column, and a plant growth model is constructed; the tracer solution is infiltrated into the soil column in an artificial rainfall mode, rainfall and accumulated water are simulated to infiltrate and replenish soil water, and the tracer solution is absorbed and utilized by the plant root system; plant root system and leaf water samples are regularly collected through the collection holes after artificial rainfall; and calculating the water age of the plant by measuring the time of the tracer agent in the plant root system water sample and the time of the tracer agent in the plant root system leaf water sample. According to the method, the water age of the plant is calculated by constructing the plant growth model, simulating artificial rainfall to irrigate the plant and utilizing the tracing technology according to the transpiration process of the plant, and the calculation method is simple and convenient to operate.

The invention relates to the technical field of horticultural cultivation, in particular to a culture method for increasing the growth rate of crassulaceae ambrosia succulent plants. Comprising the following steps: selecting crassulaceae kalanchoe plants with developed root systems as stocks; after top cutting, naturally air-drying for 3-6 days at the temperature of 20-25 DEG C and the humidity of 70-80% to form a cut wooden bolt sealing layer; the method comprises the following steps: selecting a blister succulent plant with a hypocotyledonary axis as a scion; inserting the scion into a stock cut by adopting a cleft grafting method for fixing; and then placing in a short-day weak-light environment with the sunshine duration of 3-5 hours and the light intensity of 5000-7000lx for healing culture. According to the method, the technical bottleneck of extremely slow growth of blister succulent plants is thoroughly broken through through precise cooperation of strong nutrient pumping of the heterogeneity rootstocks, specific air-drying corrosion prevention and transpiration inhibition by weak light, black rot of grafted water is effectively avoided, the cultivation period is shortened to one year from several years, and the method has great large-scale production value.

This invention provides CaCA1 The application of genes in the resistance of chili peppers to low temperature and low light stress falls under the field of gene breeding technology. Under low temperature and low light stress... CaCA1 Transient overexpression can slow down wilting in pepper plants, increase the content of photosynthetic pigments, transpiration rate, antioxidant enzyme activity and their gene expression levels, soluble protein, free proline and mineral element content in pepper leaves, and reduce intercellular CO2 concentration, malondialdehyde and heat dissipation per unit area. Transient silencing was performed using VIGS technology. CaCA1 Genetic factors reduced the plant height, stem diameter, biomass, and root morphology parameters of chili peppers, and caused stomatal closure, resulting in a decrease in overall fluorescence intensity, photosynthetic performance index, and element content. CaCA1 Transient overexpression of the gene in peppers can alleviate plant wilting and improve resistance to low temperature and low light stress, while silencing the gene... CaCA1 Genetic modification can weaken its resistance.

This invention discloses a biomimetic fabric possessing the spectral characteristics and transpiration effects of natural plants, and its preparation method. Utilizing electrospinning technology, this invention prepares a multilayer thermoplastic polyurethane fiber membrane through spectral optimization design and construction based on Murray's law, simultaneously exhibiting leaf spectral characteristics and transpiration effects. The pigments (aniline yellow, phthalocyanine violet, permanent red, and carbon black) simulate the "green peak" of plants; the porous structure of the fiber membrane and water respectively simulate the "near-infrared plateau" and "water peak" of plants. Importantly, in the presence of water, the color and spectrum of the multilayer membrane can be dynamically switched. Results show that this moist biomimetic fabric exhibits a high spectral correlation coefficient with natural green leaves, reaching 0.991, and demonstrates an excellent evaporation rate (0.84 kg m³ / s). ‑2 h ‑1 It is 4 times that of green camouflage cloth, and the average temperature difference between the moist biomimetic fabric and natural plant leaves is 0.4℃ over 24 hours.

The invention relates to the technical field of ecological geotechnical engineering, and discloses a root system simulation device based on 3D printing and a microcosmic support structure, which comprises a root system main body unit which is integrally formed by adopting biocompatible polylactic acid or a composite material thereof through a 3D printing technology and is of a bionic columnar structure with a hollow interior and a closed bottom end, according to the invention, through the collaborative design of the bionic surface, the gradient micropores, the built-in support and the negative pressure driving, the dynamic physical simulation of the water absorption-transpiration process of the plant root system is realized for the first time, and high biological similarity and structural stability are achieved; the device can be widely applied to soil tests such as direct shear, triaxial test and drawing test, is used for researching the influence of vegetation transpiration on soil shear strength, matrix suction and slope stability, fills the technical blank that a traditional root system model cannot reflect the physiological hydraulic effect, and remarkably improves the authenticity and scientificity of an ecological slope protection experiment.