52 results about "Leaf water" patented technology

The invention discloses an application of a GHERF114 gene in regulating and controlling salt stress tolerance and drought stress tolerance of a plant. The ID (Identity) of the gene is GHA05G2445. According to the invention, an arabidopsis thaliana homozygous line over-expressing the GHERF114 gene is obtained through a transgenic technology; through phenotypic change after salt stress treatment and drought stress treatment, leaf wilting degree, rosette leaf size and form comparison, in-vitro leaf water loss rate, leaf relative water content, chlorophyll content and the like verification, it is indicated that the tolerance of transgenic arabidopsis thaliana to salt stress and drought stress is remarkably reduced, and a TRV: GHERF114 gene silent plant is obtained through a VIGS technology; compared with a control group after salt stress and drought stress treatment, the salt tolerance and the drought resistance of silent plants are remarkably improved. Results show that the GHERF114 plays an important role in plant salt stress and drought stress response processes, has important significance in breeding and research for improving salt tolerance and drought tolerance of cotton, and can be applied to screening of stress-resistant cotton varieties through a gene knockout technology.

The invention belongs to the technical field of agriculture, particularly relates to a cranberry water demand dynamic sensing system and a method thereof, and aims to solve the problems that an existing traditional irrigation method is often based on a fixed time table or simple soil humidity measurement, the actual water demand condition of cranberries cannot be timely and accurately reflected, and insufficient irrigation or excessive irrigation is easily caused. In order to solve the problems that in the prior art, water resources are wasted, and the growth and yield of cranberries are possibly influenced, the invention provides the following scheme: the system comprises a monitoring module, a control module and a display module, wherein the monitoring module comprises stem flow rate, leaf water potential, soil water content at different depths and positions, air temperature and humidity, illumination intensity and wind speed data; according to the cranberry water demand monitoring system, accurate monitoring, real-time evaluation and scientific prediction of the cranberry water demand condition can be achieved, then a reasonable irrigation decision and environment regulation and control are guided, and the irrigation efficiency and the water resource utilization efficiency are improved.

The invention relates to the technical field of agricultural remote sensing and precise irrigation, in particular to a method and equipment for inverting leaf water potential of grapes before dawn based on multispectral remote sensing, and the method comprises the steps: measuring leaf water potential of representative grape plants in each planting test plot before dawn in different growth periods, and collecting canopy multispectral images in the noon period; preprocessing the remote sensing original image data; calculating a vegetation index; on the basis of the model fitting data set and the training feature set, constructing basic prediction models in different growth periods by adopting a unary linear regression algorithm, a multiple linear regression algorithm and a partial least square regression algorithm respectively; determining a PLSR inversion model according to the decision coefficient and the root-mean-square error; and carrying out pre-dawn leaf water potential prediction through the PLSR inversion model. Through the method, high-precision inversion of the water potential of the leaves before dawn based on the noon canopy multispectral data can be realized, and reliable technical support is provided for accurate management of vineyard moisture and intelligent irrigation.

The utility model provides a continuous operating device of a lotus leaf water-removing machine, which relates to the technical field of lotus leaf water-removing machines and comprises a cleaning box and an operating box, three baffles are arranged in the operating box, conveying arches are arranged on the surfaces of the two baffles, heating wires are arranged on the surfaces of the conveying arches far away from the cleaning box, and a conveying belt is arranged in the operating box. The operation box, the material conveying arch, the electric heating wire, the first air blowing assembly and the second air blowing assembly are adopted, the first draught fan is turned on, lotus leaves move on the top of the material conveying arch along with a cyclone, and therefore water obtained after the lotus leaves are air-dried is discharged through the material conveying arch; the air speed of the first fan is reduced, the air-dried lotus leaves are conveyed through the conveying belt, the second fan is turned on, and meanwhile, the moving lotus leaves are subjected to fixation under the action of the electric heating wire, so that the fixation effect of the lotus leaves is improved, fixation of the lotus leaves is conveniently completed through continuous operation, and manpower and material resources are saved.

The application discloses a drying method of hibiscus flowers. The method comprises the following steps: 1) enzyme inactivation and color protection: the hibiscus flowers are sequentially immersed in an acidic citric acid-vitamin C solution and a solution added with corn stem and leaf water extract, so as to efficiently inactivate oxidase and protect color; 2) composite film construction: a hibiscus leaf extract solution is used as a natural film-forming matrix, is compounded with hydroxypropyl methyl cellulose and the like to form a film-forming solution, the hibiscus flowers are immersed and coated, and a supercritical CO2 drying technology is used to form a uniform and porous protective film on the petal surface; and 3) hot air drying: two-stage gradient temperature and humidity control is adopted for final drying. The application can significantly inhibit enzyme browning and non-enzyme browning in the drying process, effectively reduce the loss of functional components such as anthocyanins and flavonoids, solve the problems of petal blackening, brittleness, fragility and the like caused by traditional drying, and the finished product is full in shape, bright in color, and green in the whole process.

The application discloses a kind of passion fruit plant health monitoring methods using spectral analysis, the method is by simultaneously collecting the spectral data of the top of plant new leaf, middle functional leaf and fruit, it is compared with the standard health spectrum model of prestorage, based on the diagnosis of magnesium deficiency of top leaf 530nm reflection peak, the diagnosis of nitrogen deficiency of middle leaf red edge position blue shift, the diagnosis of water deficiency of middle leaf water index rise, specific waveband spectrum distortion early warning disease and fruit spectrum form evaluation quality, realize multi-index comprehensive diagnosis;The application realizes multi-index diagnosis of plant nitrogen, magnesium nutritional status, water stress, potential disease and fruit quality by simultaneously collecting and analyzing the reflection characteristics of the top of passion fruit plant new leaf, middle functional leaf and fruit in specific spectral band, so as to overcome the problem of the prior art relying on single vegetation index or chlorophyll measurement, which leads to the problem of partial diagnosis information.

This invention provides a non-destructive detection method and device for plant leaf moisture based on dual-modal fusion, belonging to the field of plant water detection technology. The method includes: simultaneously acquiring the current dielectric, micro-deformation, and surface temperature parameters of the target plant leaf; after temperature compensation, using calibrated elastic coefficients and micro-deformation parameters to invert the dynamic thickness variation mapping relationship; accordingly, adaptive morphological interference elimination is performed on the dielectric parameters to obtain thickness-normalized dielectric parameters; finally, the above parameters are used as joint features input to a dual-modal fusion model, and the moisture detection results are decoupled and output. This invention decouples water loss and leaf morphological variation from the underlying physical mechanism, effectively eliminating interference and strain response hysteresis caused by changes in sensor electrode spacing, and significantly improving the accuracy and noise resistance of in-situ continuous monitoring of plant moisture across the entire range.

The invention relates to the field of plant biotechnology and molecular biology, in particular to application of a VvECT10 gene in regulation and control of drought resistance of grapes. A strain with overexpressed VvECT10 gene is slow in leaf water loss and light in withering degree under a drought condition, the content of malondialdehyde (MDA) and hydrogen peroxide (H2O2) is remarkably reduced, and the activity of peroxidase (POD) and catalase (CAT) is remarkably improved, which indicates that the overexpression of the VvECT10 gene can enhance the drought resistance of the grape plant and relieve oxidative damage.

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 invention belongs to the technical field of plant leaf hydraulic characteristic determination, and discloses a corn leaf hydraulic conductivity and embolism curve determination system and method, and the system comprises a corn leaf transpiration amount determination device in a stable state; the invention discloses a convenient leaf water potential balance, dehydration and leaf area measuring device and a dew-point water potential instrument, and the measuring system and method are not only suitable for measuring the maximum hydraulic conductance and embolism curve of the leaf in the whole growth period of corn, but also can realize the goal of simultaneously measuring the maximum hydraulic conductance and complete embolism curve of the corn leaf by using only one corn leaf. According to the method, blade mechanical damage caused by heterogeneity of blades at different positions and a pressure chamber method is avoided, and the measured maximum hydraulic conductivity and embolism curve fitting effect is better.

The invention belongs to the technical field of plant planting, and provides a Hainan camellia oleifera high-survival-rate drought-resistant afforestation and biological nutrient solution preparation method. The special nutrient solution for the camellia oleifera comprises the following raw materials in parts by weight: 6-12 parts of a probiotic agent, 8-12 parts of potassium fulvate, 15-20 parts of potassium nitrate, 60-70 parts of a coco coir extract and 95-105 parts of water. Through the synergistic effect of the afforestation method and the special nutrient solution for camellia oleifera, the survival rate and preservation rate of camellia oleifera afforestation are remarkably increased. Wherein the special nutrient solution has high-temperature-resistant, drought-resistant and root-promoting effects, and can effectively promote the growth of roots of camellia oleifera, improve the water-retaining capacity of leaves and increase the content of available phosphorus in soil, thereby enhancing the stress resistance and growth vigor of plants; in the drought period, the leaf wilting degree of the oil-tea camellia adopting the drought-resistant afforestation method is far lower than that of a traditional method, the water content of soil is higher, and stage drought stress can be effectively resisted.

A kind of tea processing preparation process, it is related to tea processing technical field, solve the problem of different water content of tea fresh leaves due to different degree of sucking and biting of small green leafhopper adults and nymphs and different time interval from sucking and biting to picking.The preparation process includes fresh leaf pretreatment, collision green and aroma enhancement, steam + high hot air fixation, spreading, striping, drying, screening and picking, aroma enhancement and packaging.In the fresh leaf pretreatment process, small green leafhopper adults are put in, and small green leafhoppers are attracted to suck and bite fresh leaves by yellow light.In the collision green process, tea fresh leaves are made to jump by vibration to carry out collision green treatment.The present application solves the problem of different degree of fresh leaf water loss due to different degree of sucking and biting of small green leafhopper adults and nymphs and different time interval from sucking and biting to picking by putting small green leafhopper adults and nymphs to concentrate sucking and biting of tea fresh leaves.Meanwhile, the quality of cicada tea is effectively improved by temperature and humidity control, light supplement, collision green and aroma enhancement, steam + high hot air fixation.

The invention discloses a preparation method of a hippophae rhamnoides branch and leaf water extract and application of the hippophae rhamnoides branch and leaf water extract in inhibition of aquatic pathogenic bacteria. The preparation method comprises the following steps: drying and crushing fresh hippophae rhamnoides leaves or hippophae rhamnoides branches; adding water, and carrying out condensation reflux extraction; removing the solvent in the filtrate; and finally, grinding into powder, namely the sea-buckthorn branch and leaf water extract. The method not only makes full use of sea-buckthorn resources, but also has the advantages of safety, simplicity, convenience and low cost, and is easy to popularize on a large scale; the prepared hippophae rhamnoides branch and leaf water extract shows a good inhibition effect on vibrio aquatic pathogenic bacteria and particularly has an obvious inhibition effect on vibrio parahaemolyticus, the MIC of the hippophae rhamnoides branch water extract reaches 6.25 mg / mL, and the MIC of the hippophae rhamnoides leaf water extract reaches 1.56 mg / mL; the invention can be applied to preparation of aquatic pathogenic bacteria resistant drugs or feed additives, provides a powerful means for control and prevention of vibriosis of aquatic animals, and has important practical value in the aspect of guaranteeing the safety of aquaculture.

The invention relates to a crop leaf water potential estimation method based on hyperspectral reflectivity. The crop leaf water potential estimation method comprises the following steps: measuring the spectral reflectivity and leaf water potential of a leaf under a preset wave band; determining a candidate vegetation index based on the spectral reflectance; screening a target vegetation index from the candidate vegetation indexes based on the relationship between the candidate vegetation indexes and the leaf water potential; and constructing a target prediction model based on the leaf water potential and the target vegetation index, and predicting the leaf water potential of the leaf based on the target prediction model. According to the method, the leaf water potential measurement efficiency is greatly improved, a feasible technical scheme is provided for crop water and fertilizer deficiency diagnosis, and the method has important scientific significance and practical value for improving automation and intellectualization of water and fertilizer management.

The invention belongs to the technical field of cosmetics, and particularly relates to a spray type skin care emulsion as well as a preparation method and application thereof. The skin care emulsion is prepared from the following components in percentage by mass: 0.5 to 2 percent of meadowfoam seed oil, 0.1 to 1.5 percent of panthenol, 0.01 to 0.15 percent of herba centellae extract, 0.1 to 1 percent of dipotassium glycyrrhizinate, 2.1 to 21.5 percent of humectant, 0.1 to 1 percent of emulsifier, 0.01 to 0.15 percent of chelating agent, 0.11 to 1.6 percent of preservative and the balance of aloe barbadensis leaf water. The meadowfoam seed oil, the panthenol and other components are compounded to prepare the spray type emulsion, the components are matched with one another, so that the atomization effect of spray can be effectively improved by reducing the surface tension of the emulsion, the effect that the spray can cover the skin more widely and finely is ensured, and the active components interact with one another, so that the effect of improving the skin quality is achieved. The soothing and repairing effects of the emulsion can be synergistically enhanced.

The invention relates to the technical field of cosmetics, in particular to a soothing, repairing and moisturizing composition and application thereof, essence and a preparation method thereof. The soothing, repairing and moisturizing composition is prepared from the following components in parts by weight: 5 to 10 parts of myrtle leaf water, 1 to 5 parts of plantago major leaf extract, 0.5 to 1.5 parts of murdannia simplex leaf extract, 0.9 to 3 parts of lactic acid bacteria fermentation product and 0.1 to 2 parts of European larch wood extract. The effect is more comprehensive, more effective and more durable.

The application discloses a method for improving drought resistance and oxidation resistance of poplar by improving physiological indexes of the poplar, and the method is irrigating poplar plants with L-glutamic acid solution to improve the physiological indexes of the poplar, including: increasing the relative water content of leaves; reducing the leaf water loss rate; maintaining the stability of the leaf electrolyte permeability; increasing the endogenous proline content of leaves; reducing the expression amount of endogenous proline dehydrogenase, increasing the expression amount of endogenous pyrroline-5-carboxylic acid reductase, reducing the expression amount of endogenous pyrroline-5-carboxylic acid dehydrogenase, and increasing the expression amount of endogenous pyrroline-5-carboxylic acid synthetase; improving the rehydration capacity of drought stress leaves; increasing the content or activity of endogenous catalase; increasing the content or activity of endogenous peroxidase; and increasing the content or activity of endogenous superoxide dismutase.