135 results about "Transpiration" patented technology

The invention relates to the technical field of crop production, in particular to a big data-based crop yield prediction and synergistic management system, which comprises a data acquisition module, a data processing module, a multi-scale crop growth prediction module and a plant stomata dynamic adjustment and transpiration monitoring module, the data acquisition module acquires multi-dimensional agricultural data; the data processing module receives and preprocesses the collected multi-dimensional agricultural data; the multi-scale crop growth prediction module predicts growth trends of crops in different time dimensions; and the plant stomata dynamic adjustment and transpiration monitoring module analyzes and predicts the transpiration rate of the crops, and adjusts the irrigation amount in real time in combination with the prediction result of the growth trend of the crops. According to the invention, the sustainability of water resource utilization is improved, the waste of agricultural resources is reduced, and finally the benefits of agricultural production and the sustainability of the environment are improved.

The invention discloses a method and system for estimating irrigation water consumption and water utilization efficiency, and relates to the technical field of water resource management, and the method comprises the steps: collecting the plant stem flow rate, canopy temperature and soil profile water content data of a target area through a multi-source sensing device, and obtaining a gradient and permeability distribution diagram of a geographic information system; dividing the farmland of the target area into sub-areas with different irrigation priorities based on a soil conductivity mutation point detection algorithm; constructing a dynamic water demand model fused with the plant transpiration hysteresis effect, performing space-time correlation analysis on the stem flow rate data and the soil moisture content gradient, and calculating the real-time water demand intensity of each sub-region; the method comprises the following steps: accessing short-time rainfall prediction data of a meteorological radar, dynamically correcting a future irrigation decision by adopting a sliding time window mechanism, and triggering a gradient delay irrigation instruction when the predicted rainfall amount exceeds an irrigation threshold value; and calculating the actual moisture utilization efficiency based on the inversion data of the moisture content of the irrigated soil and the unmanned aerial vehicle multispectral image.

The invention discloses an intelligent fertilization and irrigation regulation and control device and method based on deep learning. The method comprises the following steps: S1, constructing an agricultural environment original data set; s2, preprocessing the original data set to generate an agricultural data set with consistent time and space; s3, constructing a multi-layer neuromorphic calculation model which comprises a photosynthetic layer, a root system layer and a transpiration layer; s4, performing correlation analysis based on the photosynthesis dynamic curve, the root system water and fertilizer absorption curve and the transpiration-moisture supply curve, and constructing a photosynthesis-root system-transpiration synergistic curve; s5, on the basis of the photosynthesis-root system-transpiration synergistic curve, calculating a promoting factor of photosynthesis on root system absorption and a regulating factor of root system absorption on transpiration intensity, and constructing a self-adaptive regulation and control function; and S6, carrying out time sequence analysis on the self-adaptive regulation and control function, and formulating a final fertilization and irrigation regulation and control scheme. According to the method, a multi-layer neuromorphic calculation method is adopted, the photosynthesis-root system-transpiration cooperative relation is accurately modeled, and intelligent fertilization and irrigation regulation and control are achieved.

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 provides an organic fertilizer utilization effect evaluation system and method based on spectral analysis, and relates to the technical field of organic fertilizer effect evaluation.The method comprises the steps that spectral images of a crop # imgabs0 # before and after organic fertilizer application are collected, and meanwhile the dry matter ratio and the photosynthetic rate of a crop # imgabs1 # before and after fertilizer application are obtained; calculating the chlorophyll content, the nitrogen content, the leaf area index, the transpiration intensity and the plant moisture content of the crop # imgabs2 # before and after fertilization according to the reflected wave data, and calculating the plant growth health index, the moisture utilization efficiency index and the photosynthetic transpiration index; according to the method, a comprehensive evaluation model is constructed, comprehensive evaluation indexes of the crop # imgabs3 # before and after fertilization are respectively generated by utilizing the comprehensive evaluation model, a difference value of the comprehensive evaluation indexes is calculated to serve as a fertilizer efficiency evaluation index, and the utilization effect of the organic fertilizer is evaluated according to the difference value, so that comprehensive monitoring and quantitative analysis of the crop growth condition are realized, and the application effect of the organic fertilizer is objectively reflected.

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 utility model relates to a river, lake and channel bottom water body ecological management device which comprises a lower box body which sinks underwater and is close to the water bottom and an upper box body which is provided with an open top end, is half-submerged in the water and emerges from the water surface, and the upper box body and the lower box body are connected through a telescopic communicating pipe; an upper hollow box is arranged around the outlet of the communicating pipe in the upper box body, the water surface of the water body in the upper box body and the water surface of the water body outside the upper box body are mutually isolated, and the bottoms are communicated; a lower hollow box for adjusting the depth from the lower box body to the water bottom is arranged around the inlet of the communicating pipe in the lower box body; the upper box body and the lower box body are provided with facilities which are prevented from being washed away by water flow. According to the device, the method and the design method, sediments at the bottom of a water body are continuously conveyed to the surface layer of the water body under the action of water surface evaporation and plant transpiration by using an upper box body and a lower box body which are provided with communicating pipes without any manual or mechanical action, so that nutrients are provided for aquatic plants planted in the upper box body, and the water environment of rivers and lakes is improved.

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 space planting matrix moisture control method and system based on water-gas balance, and the method comprises the steps: constructing a moisture utilization efficiency model between the transpiration rate / photosynthesis rate of a unit area leaf and the matrix moisture content, solving the matrix moisture content through the moisture utilization efficiency model, and when the matrix moisture content is lower than a set threshold value, determining that the matrix moisture content is lower than the set threshold value; the controller controls the water tank to start irrigation until the water utilization efficiency is equal to the maximum water utilization efficiency of the plants, and irrigation is stopped. According to the invention, the problem that the water content of the matrix cannot be directly and accurately measured by a sensor in the space microgravity environment is solved, and efficient management and utilization of water in the space microgravity environment are realized.

The invention relates to the field of urban green land evapotranspiration zoning, in particular to an urban green land surface evapotranspiration zoning method and system based on impedance parameters, and aims to distinguish arbor, shrub and lawn transpiration in an urban green land. The method comprises the following steps: firstly, collecting and preprocessing vegetation morphological parameters, meteorological data, canopy surface temperature, soil heat flux, vegetation transpiration and vortex related flux data; calculating leaf boundary layer impedance and canopy stomatal impedance of each vegetation type by using a backstepping Penman-Monteith formula and an earth surface energy balance equation; determining the proportion of each vegetation type in the flux contribution source area through a flux footprint model, and reversely deducing the total aerodynamic impedance and the total stomatal impedance of the earth surface; solving aerodynamic impedance of each vegetation according to an earth surface energy balance equation and performing fitting correction; and finally, the corrected impedance parameters are substituted into a Penman-Monteith model to calculate the transpiration amount of each vegetation. According to the method, the problem of mismatching between single plant scale data and community scale data is effectively solved, and the evapotranspiration partition calculation precision is improved.

The invention discloses a cuttage method for garden small chrysanthemum, and relates to the technical field of agricultural production. The method comprises the following steps: S1, selecting cutting slips: preferentially selecting top shoots and twigs, cutting the cutting slips with the length of 5-10cm, reserving 1-2 leaves at the top, cutting large leaves into halves, removing redundant leaves at the bottom, and cutting the large leaves into halves to reduce transpiration; s2, performing incision treatment and disinfection: obliquely cutting the base parts of the cutting slips by using a sharp cutter to increase the water absorption area, then soaking the cutting slips in a disinfectant for disinfection, and promoting rapid healing of the incision after disinfection. S3, rooting agent supplementation: soaking the bases of the cutting slips with a rooting agent to accelerate rooting; a loose and breathable mixed substrate is used, base fertilizer application is avoided, root burning is prevented, thorough watering is performed before cuttage, punching is performed with bamboo sticks, the rooting speed of the chrysanthemum can be effectively increased, and meanwhile the root quantity can be increased.

The invention relates to the technical field of microorganisms, in particular to a strain (Pezicula ericae) XA4 and application of the strain (Pezicula ericae) XA4. The invention provides a strain (Pezicula ericae) XA4 which is preserved in the general microbiological center of the China Committee for Culture Collection of Microorganisms on June 26, 2024, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.41350. The invention also provides a method for preparing the strain (Pezicula ericae) XA4. The XA4 provided by the invention is used for carrying out tie-back on sterile cultured rhododendron dauricum seedlings, and trypan blue dyeing detection shows that mycorrhizal fungi can be successfully subjected to tie-back. Compared with the non-inoculated strain, the inoculated XA4 has the most obvious growth promoting effect on the rhododendron dauricum. The plant height, the leaf length, the leaf width, the root length, the biomass, the chlorophyll content, the net photosynthetic rate, the stomatal conductance, the intercellular CO2 concentration, the transpiration rate and the root activity of the strain are all improved compared with those of the strain without inoculation.

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 belongs to the field of forestry, and particularly relates to application of arbuscular mycorrhizal fungi to improvement of heavy metal stress resistance of poplars, growth performance of the poplars is remarkably improved by inoculating the arbuscular mycorrhizal fungi, and net photosynthetic rate, stomatal conductance, transpiration rate, maximum photochemical quantum efficiency and effective photochemical efficiency of a photosystem II are remarkably improved. Under the condition of lead stress, the lead content in the leaves, stems and root systems of the poplar inoculated with the arbuscular mycorrhizal fungi is obviously reduced, which indicates that lead is mainly isolated in the root systems, and the transfer of lead to the overground part is reduced. In addition, the arbuscular mycorrhizal fungi relieve oxidative damage by improving the activity of antioxidant enzymes such as superoxide dismutase, catalase and peroxidase.

The invention provides a plant physiological status monitoring method and device based on a flexible wearable sensor, is applied to a plant physiological status monitoring system, and relates to the technical field of agriculture. The system comprises a flexible wearable stem diameter detection device and a monitoring terminal. The flexible wearable stem diameter detection equipment is arranged on a stem of a plant; the method comprises the following steps: acquiring the stem diameter of a plant based on flexible wearable stem diameter detection equipment; carrying out real-time physiological status monitoring on the plant based on the stalk diameter of the plant; wherein the plant physiological status monitoring at least comprises one of plant transpiration monitoring, plant fruit cracking monitoring, plant nutrient deficiency monitoring, plant flooding stress monitoring and plant drought stress monitoring; the stalk diameter of the plant is acquired through the flexible sensor arranged on the stalk of the plant, and the physiological status of the plant is monitored based on the stalk diameter of the plant, so that the labor management cost is reduced, the growth environment of the crop is optimized, and the healthy growth of the crop is promoted.

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 discloses application of exogenous melatonin to improvement of salt tolerance of ricinus communis, and belongs to the technical field of plant protection. Experiments prove that exogenous melatonin pretreatment can effectively relieve damage of salt stress to ricinus communis, and the content of proline, soluble sugar and soluble protein is increased by improving the activity of peroxidase, ascorbic acid peroxidase and superoxide dismutase in leaves; the net photosynthetic rate, the stomatal conductance, the intercellular CO2 concentration, the transpiration rate and the actual photochemical efficiency are remarkably increased, the decreasing amplitude of a non-photochemical quenching coefficient is reduced, the photosynthetic structure is protected, and the photosynthetic rate is improved, so that the damage of the salt stress to the castor-oil plants can be effectively relieved by applying the melatonin externally, and the salt tolerance of the plants is improved; the key growth problem caused by soil salinization of ricinus communis is solved; in addition, no potential safety hazard and risk of mutation of germplasm genes exist in the treatment process, the safety of prevention and control measures is greatly improved, and the method is a green, safe and environment-friendly method for relieving the harm of salt stress to the castor.

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 invention relates to the field of building construction, and discloses a bionic plant transpiration drainage foundation consolidation device which comprises a drainage plate inserted into a foundation, a permeable membrane assembly installed on the drainage plate and laid on the surface of the foundation, a water storage bin plate installed on the permeable membrane assembly in an attached mode and a photo-thermal transpiration plate installed on the water storage bin plate in an attached mode. The permeable membrane assembly comprises permeable membrane inner-layer plates clamped among the four groups of drainage plates, the permeable membrane inner-layer plates are symmetrically attached and connected with permeable membrane outer-layer plates about the axes of the permeable membrane inner-layer plates, and assembly grooves connected with the drainage plates in a clamped mode are formed in the permeable membrane outer-layer plates; the water storage bin plate and the permeable membrane assembly are provided with locking assemblies which are used for reinforcing the assembly of the drainage plate, the permeable membrane assembly and the water storage bin plate and preventing the assembly from generating pores; water in the foundation is collected into the water storage bin plate through transpiration pulling force and seepage pressure, then the water is evaporated into the atmosphere through the photo-thermal transpiration plate, and rapid foundation solidification is achieved.

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 present invention discloses a slope protection device capable of protecting vegetation, comprising a cross frame and a sunshade plate arranged above the cross frame, one side of the sunshade plate being fixedly connected to the cross frame through a connecting plate, a plurality of first through holes being opened on the sunshade plate, and a circle of deformation layer made of thermal expansion material being arranged in the first through holes. When the temperature is high in summer, the deformation layer made of thermal expansion material will expand to block the first through holes, thereby preventing the sun from excessively irradiating the plants, and at the same time preventing rain from falling on the plants when the temperature is high at noon, causing the plants to die due to transpiration, thereby helping to reduce the mortality rate of the plants; when the temperature drops, the deformation layer will shrink to a pre-sized size to open the first through holes.

According to the reinforcing device for the high and steep slope, the growth cylinder, the waterproof cylinder and the outer cylinder are arranged, and the first induction matrix and the second induction matrix which are different in effective component concentration are arranged in the growth cylinder and between the growth cylinder and the outer cylinder; root systems of the fixed green plants are induced to grow in the axial direction of the growth cylinder so as to go deep into the slope and then develop in the radial direction of the growth cylinder so as to fix soil in a larger range, and meanwhile the cutting parts are arranged on the periphery of the growth cylinder so that withered fixed green plants can be conveniently removed. On one hand, the slope is reinforced through the root systems of the fixed green plants, on the other hand, moisture in soil is diffused to the atmosphere through the transpiration effect of the fixed green plants, deformation and flowing of the soil are reduced, and the stability of the slope is improved. Due to the fact that soil is fixed and modified mainly by fixing the root systems of the green plants, the reinforcing device not only can well reinforce the slope, but also can generate positive influence on the ecological environment.

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 present invention relates to an anti-transpiration agent for reducing plant transpiration and a preparation method thereof, which includes an agent A and an agent B, wherein the agent A is composed of a water-soluble chitosan solution, a metal organic framework MIL-125 (Ti) and a phosphate buffer, and the agent B is composed of glycerol, ferric chloride and water. In sunny weather, the agent A is first sprayed on the plant leaf surface using a sprayer, and 1.5 to 2 hours after the spraying is completed, the agent B is sprayed on the plant leaf surface using a sprayer, and after the leaf surface is dried, a layer of anti-transpiration agent is attached to the leaf surface. The anti-transpiration agent for reducing plant transpiration of the present invention is sprayed on the leaves of the plant, which can significantly reduce the plant transpiration, and has a significant inhibitory effect on the transpiration rate of the plant leaves. At the same time, the leaf surface is less damaged and is not prone to poisoning symptoms. The anti-transpiration effect is more lasting, and after a single use for 9 days, there is still a certain anti-transpiration effect. The anti-transpiration agent of the present invention has good stability after film formation and good resistance to rainwater impact.

The present invention discloses the application of the PdAKR2A gene in improving the photosynthetic rate and biomass of poplar, belonging to the technical field of poplar genetic engineering breeding. The present invention for the first time discloses that overexpression of the PdAKR2A gene can significantly increase the number of cambium cell layers and the width of xylem in poplar, thereby increasing the plant height and ground diameter of poplar, and thus improving the growth rate and biological yield of poplar; it can significantly increase the net photosynthetic rate, stomatal conductance, transpiration rate and chlorophyll content of poplar; it can significantly increase the lignin and cellulose contents of poplar; the provided PdAKR2A gene can be used as a candidate gene for cultivating new poplar varieties with faster growth rate and better quality, which is of great significance for promoting the sustainable development of forestry in China and alleviating the supply-demand tension in the wood market.

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.