54 results about "Citrus tree" patented technology

The invention discloses a method for ecologically controlling pests in a citrus orchard, which comprises the following steps of: preparing mint, salvia officinalis and ageratum conyzoides in a ratio of 1: 1: 1 in the middle of the citrus orchard to form a strip-shaped or chessboard-shaped layout with the coverage area of 30-50%, and synergistically repelling the pests and attracting natural enemies by utilizing plant volatile matters; the method specifically comprises the steps that an intercropping belt is arranged at the position 1 m away from citrus trees, the belt width is 2 m, and the plant row spacing is 30 cm * 40 cm; citrus field planting is conducted, transplanting is conducted in spring of the next year, organic fertilizer and regular pruning and covering (three times every year, soil covering is conducted after smashing, and wood vinegar is added) are combined; mint releases menthol, salvia officinalis releases eucalyptol to expel parasites, ageratum conyzoides attracts predatory mites to control red spiders, and mineral oil and a yellow sticky card are supplemented for prevention and control; aiming at facility cultivation, LED supplementary lighting (red light: blue light: white light = 3: 1: 1) and fan diffusion volatile matters are additionally arranged. The use of chemical pesticides is reduced by 40% or above, the pest population density is reduced by 50%-70%, meanwhile, the diversity of soil organic matter and microorganisms is improved, and the method is suitable for open-air and greenhouse citrus orchards.

The present application relates to the technical field of resource utilization of fruit tree branches, and provides a method for returning citrus branches to the orchard, which comprises the following steps: (1) crushing and fermenting the pruned citrus branches, and mixing the branches with organic fertilizer to obtain material A; (2) digging a ditch along a direction parallel to the tangent of the tree crown drip line; and (3) applying the material A obtained in the step (2) into the ditch, and then covering the ditch with soil. The method for returning citrus branches to the orchard can significantly improve the diversity of arbuscular mycorrhizal fungi and the stability of the community structure in the soil, and promote more arbuscular mycorrhizal fungi to act on the rhizosphere soil and root hairs of citrus, so as to effectively improve the physicochemical properties of the soil and promote the growth and development of citrus. The method for returning citrus branches to the orchard is a resource utilization of waste, and can better promote the green, low-carbon, efficient and sustainable development of the citrus industry.

The utility model belongs to the technical field of agricultural machinery, and particularly relates to an anti-brown-spot layered pruning support suitable for canopies of tangelo trees. Comprising first connecting rods, second connecting rods, first connectors, second connectors and telescopic stand columns, the multiple first connecting rods and the multiple first connectors are connected to form a first closed loop, the multiple second connecting rods and the multiple second connectors are connected to form a second closed loop, and the adjacent first connectors are connected with the second connectors. Layered pruning management is achieved, the light transmittance is improved, humidity accumulation is reduced, the support can be rapidly assembled, the device adapts to different tree ages and tree forms, the manual climbing risk is reduced, operation is easy and convenient, and practicability is high.

The invention discloses a bacillus alpinus for preventing and treating citrus red mites and application of the bacillus alpinus. The bacillus alpine strain h217 disclosed by the invention is preserved in the China Center for Type Culture Collection, and the preservation number is CCTCC NO: M 2025270. Through indoor toxicity tests and field control effect tests on citrus red mites, the bacillus alpinus h217 has high toxic activity on the citrus red mites, the field control effect on spider mites on citrus trees can reach 88% or above, the mite killing effect equivalent to the effect of cyflumetofen, cyenopyrafen, propargite and other chemical miticides can be obtained, and the bacillus alpinus h217 can be applied to the field control of the spider mites on citrus trees. The method has a wide application prospect in agricultural production.

The invention relates to the technical field of suspending agents, in particular to a suspending agent containing oxine-copper and benziothiazolinone as well as a preparation method and application of the suspending agent. The invention relates to a suspending agent containing oxine-copper and benziothiazolinone, which is prepared from the following raw materials in percentage by mass: 28 to 32 percent of oxine-copper, 4 to 8 percent of benziothiazolinone, 1 to 6 percent of dispersing agent, 1 to 6 percent of wetting dispersant, 1 to 1.5 percent of suspending thixotropic agent, 4 to 8 percent of antifreezing agent, 0.05 to 0.5 percent of preservative, 0.05 to 0.5 percent of thickening agent, 0.1 to 0.5 percent of defoaming agent and the balance of water. The dispersing agent comprises polycarboxylic acid ammonium salt; the invention provides the suspending agent containing oxine-copper and benziothiazolinone, which has the advantages of favorable dispersity, favorable stability and favorable control effect. The suspending agent containing oxine-copper and benziothiazolinone provided by the invention has a good control effect on citrus tree canker and cucumber bacterial angular leaf spot.

The invention discloses a smart agricultural variable fertilization control system and method based on image recognition, and relates to the technical field of smart agriculture, and the method comprises the steps: collecting an orchard multi-source image and laser radar data through an unmanned aerial vehicle, and dividing an orchard into different microclimate management units according to topographic features; extracting the vein mesophyll color difference ratio of the citrus leaves from the visible light image, correcting the traditional spectral index, and eliminating the interference of light environment difference on nutrition diagnosis; based on the corrected spectral index, establishing a nitrogen demand model in combination with terrain and tree body parameters, and generating a single-plant personalized variable fertilization prescription map; and importing the prescription map into the intelligent fertilizer applicator, and controlling fertilizer discharge to execute variable-rate fertilizer application operation by locating and inquiring the fertilizer application amount in real time. According to the method, the dynamic compensation model based on the vein and mesophyll color difference ratio is constructed, the leaf morphological characteristics and the spectral information are cooperatively processed, the traditional vegetation index is dynamically corrected, and the spectral response deviation caused by the light environment difference under the complex terrain can be reduced.

The invention discloses a water and fertilizer integrated irrigation device for citrus planting, and relates to the technical field of irrigation devices.The water and fertilizer integrated irrigation device comprises a water and fertilizer box and a plurality of mounting rings, a plurality of inserting rods are fixedly mounted on the side wall of each mounting ring, and a plurality of connecting pipes and a plurality of drip irrigation pipes are mounted at the bottom of each mounting ring; the multiple connecting pipes and the multiple drip irrigation pipes are arranged in a staggered mode, each connecting pipe is in sealed sliding connection with the adjacent drip irrigation pipe, and a plurality of drip irrigation holes are formed in the bottom of each drip irrigation pipe; a plurality of sliding assemblies matched with the corresponding drip irrigation pipes are mounted on each mounting ring. The citrus tree drip irrigation device has the advantages that a circular drip irrigation range can be formed outside a citrus tree in a winding mode, the distances between multiple drip irrigation positions and citrus tree trunks are consistent, the drip irrigation range and the drip irrigation amount can be automatically matched and adjusted according to the growth condition of the citrus tree, the irrigation requirements of citrus trees of different sizes are met, and the normal growth requirement of the citrus tree is ensured.

The invention belongs to the field of preventing tillers of old citrus tree stump heads, and particularly relates to a method for preventing tillers of old citrus tree stump heads, which comprises the following steps: step 1, sawing the stump heads by using a saw or chopping the stump heads by using an axe, so that the surfaces are as flat as possible, the whole stump heads are kept 10cm away from the ground, and fresh sections are exposed; step 2, brushing glyphosate (not diluted) at the saw bite of the tree stump by using a brush; thirdly, a 15S black plastic film is adopted for pile head covering (0.7 m * 0.7 m); 4, covering soil with a film, and treading tightly. The method solves the problems that the prevention and treatment effect is reduced due to different reasons in production, for example, lime powder and herbicide can only effectively kill tissues at wounds of stumps, and the stumps can germinate new tillers after one year; and the fire burning effect is unstable, and the health of fruit farmers is easily harmed due to improper operation.

The invention discloses an intelligent spraying system based on an unmanned aerial vehicle. The intelligent spraying system comprises a cloud platform, a vegetation detection unmanned aerial vehicle and a pesticide spraying unmanned aerial vehicle, the vegetation detection unmanned aerial vehicle is provided with a laser radar sensor, a data acquisition module and a data transmission module, the cloud platform comprises a data processing module and a path planning module, and the pesticide spraying unmanned aerial vehicle is used for loading a pesticide, flying along a flight path and spraying the pesticide at a pesticide spraying point. The method has the advantages that the vegetation detection unmanned aerial vehicle is used for scanning the forest trees in the forest area, data are uploaded to the cloud platform, the position coordinates of each forest tree are judged through the cloud platform, pesticide spraying points are arranged on each forest tree, pesticide is sprayed at the pesticide spraying points, the number of pesticides directly sprayed to the ground is greatly reduced, and the pesticide spraying efficiency is improved. Therefore, the utilization efficiency of the pesticide can be effectively guaranteed, pesticide waste is effectively reduced, and the pesticide spraying device is particularly suitable for pesticide spraying of trees with large plant spacing such as citrus trees and grapefruit trees.

The utility model discloses an anti-frostbite protection device for citrus trees in winter, and belongs to the field of agricultural freezing prevention. A protection device for preventing citrus trees from being frostbitten in winter comprises a base, a supporting rod is vertically and fixedly installed in the center of the top of the base, a storage box is fixedly arranged at the position, located beside the supporting rod, of the top of the base, a curtain assembly is installed in the storage box, and a traction assembly connected with the curtain assembly is installed on the supporting rod. The traction assembly can drive the curtain assembly to be unfolded or folded relative to the base, a plurality of universal wheels distributed in a rectangular shape are fixedly installed at the bottom of the base, and a moving groove used for installing the traction assembly is formed in the outer wall of the supporting rod. According to the utility model, the citrus trees can be protected in the curtain assembly under the condition that the citrus trees are not damaged, and the curtain assembly can be quickly and conveniently unfolded and folded.

The invention discloses a comprehensive nutrition regulation and control method for improving overwintering cold resistance of citrus fruit trees, and relates to the field of fruit tree cultivation, and the method comprises the following steps: S1, soil conditioning and mycorrhiza inoculation after fruit picking: determining the content of rapidly available phosphorus in orchard soil, when the content of rapidly available phosphorus is greater than 30mg / kg, firstly applying humic acid and calcium magnesium phosphate fertilizer for phosphorus reduction treatment, and after the content of rapidly available phosphorus is reduced to be less than or equal to 20mg / kg, then applying a nutrient solution; digging radial short ditches on the inner side of a water drip of a tree crown, mixing a pre-activated arbuscular mycorrhizal fungus inoculant with an organic carrier, filling the mixture into the ditches, and earthing and watering; according to the comprehensive nutrition regulation and control method for improving the overwintering cold resistance of the citrus fruit trees, through soil phosphorus pre-regulation and local enrichment inoculation methods, the mycorrhizal fungus colonization rate is increased to 50% or above from less than 20%, and the mycorrhizal inoculation effect and the input-output ratio are remarkably improved.

The invention discloses a microbial fertilizer for preventing and treating citrus liberobacter asiaticum as well as a preparation method and application thereof, belongs to the technical field of prevention and treatment of agricultural diseases and pests, and particularly relates to the microbial fertilizer for preventing and treating the citrus liberobacter asiaticum. Comprising 5-10 parts of bacillus subtilis, 5-10 parts of bacillus amyloliquefaciens, 3-8 parts of bacillus megatherium, 3-8 parts of bacillus licheniformis, 3-8 parts of photosynthetic bacteria, 3-8 parts of nitrogen-fixing bacteria, 3-8 parts of phosphate solubilizing bacteria, 3-8 parts of potassium bacteria, 30-50 parts of decomposed organic fertilizer, 10-20 parts of humic acid, 5-10 parts of sodium alginate, 5-10 parts of compound amino acid and 1-5 parts of compound trace elements. The microbial fertilizer disclosed by the invention can effectively inhibit the growth of pathogenic bacteria of the citrus huanglongbing, improve the disease resistance of citrus trees, improve the soil environment and promote the growth and development of the citrus trees, and the preparation method is mature and perfect in process and suitable for large-scale production and application.

The efficient pesticide spraying device comprises a base, two first supports are fixedly connected to the upper surface of the base, a second support is jointly and fixedly connected to the outer surfaces of the two first supports, nozzles are fixedly connected to the outer surfaces of the two first supports, and the nozzles are fixedly connected to the outer surfaces of the two first supports. The device comprises a base, a protective box is fixedly connected to the upper surface of the base, a pesticide box is fixedly connected to the upper surface of the protective box, and a sealing shaft is fixedly embedded in the upper surface of the protective box, a rotating motor rotates to drive a rotating shaft to rotate, and the rotating shaft rotates to drive a stirring rod to move, so that water and pesticide in the pesticide box can be fully and uniformly stirred; a second gear can be driven to rotate through rotation of a forward and reverse motor, a first gear can be driven to rotate through rotation of the second gear, a shaft lever can be driven to rotate through rotation of the first gear, a moving wheel can be driven to rotate through rotation of the shaft lever, and the device can flexibly shuttle in a fruit-bearing forest to spray pesticides to fruit trees and is easy to operate.

The utility model belongs to the technical field of citrus tree prevention and control, and particularly relates to a citrus tree huanglongbing prevention and control device which comprises a first fixing ring, a hinge rod is hinged to the first fixing ring, a second fixing ring is hinged to the hinge rod, supporting grooves are formed in the first fixing ring and the second fixing ring respectively, and the first fixing ring and the second fixing ring are connected through a connecting rod. Storage grooves are symmetrically formed in the supporting groove, and elastic pieces are symmetrically and fixedly connected into the supporting groove. The first fixing ring is arranged on one side of a citrus tree in a sleeving mode, the rubber pads are attached to the surface of the citrus tree, the second fixing ring is rotated, the circle dimension between the two sets of rubber pads can be adjusted by adjusting the position of the adjusting rod, and therefore the prevention and control device can be suitable for citrus trees of different thicknesses, and when the prevention and control device and the citrus tree are finally fixed, the prevention and control effect is good. The two groups of rubber pads on the innermost side are tightly attached to the citrus tree, so that damage to the surface of the citrus tree is reduced, and internal nutrient loss caused by bark damage of the citrus tree is avoided.

The invention belongs to the technical field of plant growth agents for citrus tree growth, and particularly relates to a plant growth agent for citrus tree growth and a preparation method thereof.The plant growth agent is prepared from, by weight, 2.1-10.1 parts of benayl aminopurine, 2-5 parts of boric acid, 8-18 parts of anhydrous citric acid, 4-40 parts of solvent, 26.9-62.9 parts of deionized water and 1-6 parts of synergistic additive. The fruit preservative is high in solubility, convenient to absorb by fruit trees, and capable of improving the fruit quality and increasing the fruit yield.

The invention provides a hyperspectrum-based citrus leaf lesion diagnosis system and a hyperspectrum-based citrus leaf lesion diagnosis method, and the hyperspectrum-based citrus leaf lesion diagnosis system and the hyperspectrum-based citrus leaf lesion diagnosis method disclosed by the invention have the advantages that on the basis of analyzing hyperspectral imaging data of citrus leaves without diseases, lack of nutrients, black spots and yellow shoot; three parameters of yellow wave band reflectivity, infrared wave band slope and inflection point wavelength are used as characteristic quantities, and classification of four types of blades is realized by applying a support vector machine (RBF-SVM) classification model based on a Gaussian radial basis kernel function. The method solves the problems that when citrus tree disease information is detected through a field detection method at present, long-time observation with eyes is needed, subjective judgment of observers is depended, and misjudgment is likely to be caused; according to the present invention, the problem that the citrus tree disease information detection by using the chemical detection method needs the special person to detect by using the professional equipment so as not to accurately and rapidly detect each production stage of the citrus tree can be solved, and the citrus leaf disease can be rapidly and accurately diagnosed.

The invention relates to a citrus tree fertilization and girdling integrated device and a use method, and relates to the technical field of citrus tree planting and maintenance. Comprising a moving frame, a plurality of universal wheels are arranged at the bottom of the moving frame, a storage tank is arranged on the moving frame, a conveying pipe communicated with the interior of the storage tank is installed below the storage tank, the upper end of the conveying pipe is of a telescopic structure, adjacent conveying pipes are connected in a threaded fit mode, and the lower end of the conveying pipe is of a conical structure. An auger blade is arranged outside the end, away from the storage tank, of the conveying pipe. An annular cutting unit is further arranged on one side of the movable frame. The citrus tree girdling device can solve the following problems existing in the citrus tree planting and maintaining process in the prior art: fine adjustment of the girdling width is achieved by controlling the distance between the two girdling blades, and the growth requirements of different citrus trees are met; then, the fertilization depth is controlled by controlling the descending depth of auger blades; and girdling work can be synchronously carried out during fertilization, so that manpower and time cost are saved, and damage to fruit tree root systems is reduced.

This utility model provides a protective device for citrus trees against frost damage, comprising a first elastic sleeve, a cold-proof cloth layer, and a second elastic sleeve. The first elastic sleeve is positioned above the second elastic sleeve. A first elastic band and a second elastic band are respectively wrapped inside the first and second elastic sleeves. A cold-proof cloth layer is sewn between the first and second elastic sleeves. An insulation cotton layer is attached to the inner side of the cold-proof cloth layer, and a non-woven fabric layer is sewn to the inner side of the insulation cotton layer. A first sewn fabric is sewn to the left side of the cold-proof cloth layer, and a second sewn fabric is sewn to the right side. Multiple Velcro loops are sewn onto the outer surface of the first sewn fabric. This design solves the problems of fixed dimensions, poor versatility, easy insulation failure or damage to the citrus tree surface, and complex installation of existing low-temperature protection devices for late-maturing citrus trees. This utility model, with its multi-layered structure, can protect the main trunk of the citrus tree from frost damage. Its flexible design facilitates installation on citrus trees of different thicknesses and curvatures, and its operation is simple.

This invention relates to the application of a thiazolium copper and glucan composition for the control of citrus Huanglongbing (HLB), belonging to the field of biotechnology. The application of the glucan composition of this invention in the control of citrus HLB shows significant effects on the control of HLB and the recovery of citrus tree vigor. The glucan and thiazolium copper suspension have a synergistic effect, which can improve the control efficacy of citrus HLB, reduce the dosage, reduce the number of applications, and lower the cost.

The utility model relates to the technical field of irrigation devices, in particular to an irrigation device for citrus cultivation, which comprises a circulation mechanism and a supporting mechanism, the circulation mechanism comprises a drip irrigation connection barrel and connection threaded barrels arranged at two ends of the drip irrigation connection barrel, and connection screw holes are formed in the connection threaded barrels; the supporting mechanism comprises an external pipe installed on the circumferential side face of the drip irrigation connecting cylinder. The end, away from the drip irrigation connecting cylinder, of the external pipe is connected with an erecting assembly. According to the device, by arranging the drip irrigation connecting cylinder with the conveying water pipes at the two ends, the drip irrigation connecting cylinder can be placed near a citrus tree to be irrigated, the conveying water pipes are connected with an external water source, and the irrigation water source can enter the erecting assembly through an external pipe; the assembly is erected, and then a water source uniformly drips onto the soil of the root system of the citrus tree through the water outlet bent pipe, so that the irrigation uniformity can be improved, the pipe orifice can be pulled up, and the situation that the pipe orifice is blocked by a mud-water mixture is avoided.

The utility model discloses a grooving cutter for citrus tree grafting, and belongs to the field of fruit tree grafting tools. A grooving cutter for citrus tree grafting comprises a cutter handle and a cutter head rotationally connected to the cutter handle, and further comprises a blocking strip installed on the cutter handle, a protection pad is fixedly connected to the side, close to the cutter handle, of the blocking strip, a forming groove is formed in the protection pad, an elastic piece is arranged on the cutter handle, and when the blocking strip is subjected to external acting force, the elastic piece is fixed to the cutter handle. A clamping area is formed between the protection pad and the knife handle through the elastic force of the elastic piece and used for limiting fingers in the forming groove, and a carborundum sharpening stone used for sharpening the knife head is installed on the knife handle. The blocking strip and the protection pad are adjusted through the elastic piece, the hand of a user can be clamped in a self-adaptive mode, the situation that the grooving cutter falls off due to fatigue of the hand is avoided, meanwhile, the detachable carborundum sharpening stone is integrated on the cutter handle, the user can conveniently polish and maintain the cutter head, and therefore the grafting efficiency of citrus trees is improved.

This invention belongs to the field of citrus cultivation technology, specifically relating to a method for increasing the β-cryptoxanthin content in mandarin oranges through artificial lighting. This invention involves applying specific wavelengths of artificial lighting to fully mature mandarin orange trees, including Satsuma mandarins, during the period from late September (Autumn Equinox) to the harvest season when natural daylight hours are shorter. This effectively increases the β-cryptoxanthin content in mandarin oranges. Furthermore, the method described in this invention is simple, easy to implement, low-cost, and suitable for widespread application.

The utility model discloses a kind of rapid fertilizing device for pericarpium citri reticulatae planting, it is related to fertilizing device technical field, including mobile car, the mobile car upper end is provided with storage tank, the lower end of the storage tank is connected with two symmetrical settings have hopper, the hopper lower end is provided with material spraying distance adjusting mechanism, material spraying distance adjusting mechanism includes: downcomer, the downcomer is obliquely arranged, and its upper end is connected with hopper;Moving pipe, the moving pipe is also obliquely arranged, and its sliding connection is in downcomer outer end;Rotary cap, the rotary cap is conical, and its outer surface is provided with protruding strip, and the rotary cap is located in moving pipe tail lower end.The utility model design structure is reasonable, and it can be according to the planting row distance of citrus tree, and fertilizer is accurately applied to root system concentrated distribution area, avoid fertilizer waste, improve fertilizer utilization, solve the problem that traditional fertilizing device is difficult to adjust fertilizing area according to planting row distance, and it is prone to cause fertilizer waste.

The invention belongs to the technical field of plant disease prevention and control, and particularly relates to application of epicatechin and protocatechuic acid in prevention and control of citrus huanglongbing. Through systematic experimental research and application verification, it is found that epicatechin and protocatechuic acid can remarkably inhibit the number of citrus huanglongbing pathogenic bacteria, have a good synergistic effect, can remarkably improve the overall health condition of citrus trees and have excellent application prospects and popularization value. As epicatechin and protocatechuic acid have the characteristics of being natural, environment-friendly and efficient, the epicatechin and protocatechuic acid show important application potential in the field of prevention and treatment of the citrus huanglongbing, and are expected to become novel key tools in the field. The discovery not only provides a new thought for green prevention and control of the citrus huanglongbing, but also provides powerful technical support for sustainable development of the global citrus industry, and is of great significance for guaranteeing stable development of the industry.

The invention discloses a flower and fruit retention and peel beautifying method for citrus, and aims to solve the problems that although the fruit setting rate can be increased by the existing fruit retention technology, the peel thickening and peel cracking are easily caused, and the concentration of a single nutrient in soil is too high due to the application of a large amount of inorganic simple substance fertilizers with high nitrogen, high phosphorus and the like. According to the method, growth regulators of a benzylamino.gibberellic acid A4 + A7 composite formula and a gibberellic acid A4 + A7 formula are sprayed at low concentration for multiple times, A4 and A7 are matched with each other and synergistically form standard fruit shapes, flowers and fruits can be preserved, fruit peels can be beautified, the pesticide effects of A4 and A7 are soft, rough fruit peels cannot be caused, the stress resistance of fruit surfaces can be improved, and the fruit quality is improved. The added surfactant enhances the permeation of the liquid medicine, the trace element fertilizer supplements calcium and boron elements and enhances the formation of a peel wax coat, the incidence rate of citrus can be reduced, the fruit setting of citrus is facilitated, the synthesis of chlorophyll can be promoted, the flavor and fruit size of citrus and the growth vigor of citrus fruit trees are ensured, and the quality and yield of citrus are effectively improved.

The application relates to application of a thiazole zinc and glucoside composition for preventing and treating citrus Huanglongbing, and belongs to the technical field of biotechnology. The application of the glucoside composition in the prevention and control of citrus Huanglongbing shows remarkable effects on the control of citrus Huanglongbing and the recovery of citrus tree vigor. The thiazole zinc and glucoside suspension agent has a synergistic effect, can improve the effect of preventing and treating citrus Huanglongbing, reduce the application amount, reduce the use frequency, and reduce the use cost.

The invention discloses a rapid detection system for citrus liberobacter asiaticum based on infrared imaging, which relates to the technical field of citrus disease detection and comprises a data acquisition module, an environment correction module, a leaf extraction module, a feature calculation module and an infection identification module. The data acquisition module is used for deploying infrared thermal imaging equipment at key observation points of citrus tree canopies and acquiring infrared radiation images and environment temperature and humidity; the environment correction module calculates a compensation coefficient through a temperature and humidity correction model, and corrects an image pixel gray value to eliminate environment interference; the blade extraction module extracts a refined blade thermal image; the feature calculation module calculates the pixel gray scale standard deviation of the local region of interest as a transpiration heat dissipation difference feature value; and the infection identification module compares the characteristic value with the thermal physiological baseline, marks a suspected infection site and generates an infection risk thermodynamic diagram. The system can realize rapid and accurate detection of the Candidatus Liberibacter asiaticum and assist disease prevention and control.

According to the girdling device for the citrus, the girdling depth can be effectively controlled, girdling is achieved through mechanical driving, the working efficiency is effectively improved, the labor intensity is reduced, and the requirement for large-scale citrus planting is met. The girdling device comprises a mounting plate, a clamping assembly is arranged on the mounting plate, an arc-shaped rail is connected to the mounting plate through a connecting rod, and a girdling assembly is arranged on the arc-shaped rail; an energy control bin is arranged below the mounting plate, controls the girdling assembly and provides kinetic energy for the girdling assembly; the whole device is clamped and fixed to a citrus tree trunk through the arranged clamping assembly, and the girdling assembly is controlled and started to rotate by an angle larger than 180 degrees along the arc-shaped track through the arranged energy control bin, so that complete girdling can be achieved; the cutting depth can be kept unchanged through the girdling assembly, and adverse effects caused by too large or too small girdling depth during cutting are effectively avoided.

The invention discloses a citrus tree fruit yield prediction method and system, and particularly relates to the technical field of fruit yield prediction. An orchard is divided into a plurality of monitoring areas, local temperature shock speed and citrus tree moisture absorption time delay data are collected in real time, the data are used for dynamically adjusting weight assignment of a fruit yield prediction model, a prediction accuracy index is generated, the index and a preset gradient standard threshold value are compared and analyzed, and the fruit yield prediction accuracy is obtained. The accuracy of classification prediction results is improved; the abnormal degree of incomplete accurate prediction is evaluated, the prediction result is continuously corrected and optimized, and refined monitoring and dynamic adjustment are carried out, so that the problem of traditional meteorological data homogenization is solved, the accuracy of fruit yield prediction in a large-scale orchard is effectively improved, and management decision errors are avoided.

The utility model relates to the technical field of adjusting supports, in particular to branch supporting equipment for grapefruit tree cultivation. The device comprises a bottom plate, an adjusting device is arranged at the top end of the bottom plate, the adjusting device comprises an outer rod, one end of the outer rod is fixedly connected with the bottom plate, two racks are fixedly connected to one side of the outer rod, an inner rod is slidably connected to the interior of the outer rod, one end of the inner rod is fixedly connected with a U-shaped supporting plate, and the U-shaped supporting plate is fixedly connected with the bottom plate. A T-shaped hole is formed in one side of the inner rod, an anti-skid round block is slidably connected to the interior of the T-shaped hole, a round rod is fixedly connected to one end of the anti-skid round block, the arc face of the round rod is slidably connected with the T-shaped hole, and a cylinder is fixedly connected to one end of the round rod. The problems that traditional branch supporting equipment for grapefruit tree cultivation cannot adapt to branches with different heights, so that the growth of the branches is unnecessarily limited, the branches are bent or deformed due to improper support, and then the normal growth track of the branches is affected are solved.