258 results about "Trunk" patented technology

The invention discloses a double-platform point cloud-oriented bidirectional hierarchical clustering single tree segmentation method, which belongs to the technical field of forestry monitoring, and comprises the following steps of: firstly, preprocessing and filtering an original point cloud, and then vertically layering along a Z axis according to a set slice thickness; in each layer, a clustering radius is adaptively determined by using a local point density estimation result, point cloud clustering is carried out by using a region growing method based on a search radius, and an initial single wood structure unit is extracted; and then, space connection operation is executed between the upper layer and the lower layer, points with continuous structures are assigned to the same target based on triple constraints of adjacent distance, lateral offset and height continuity, and finally accurate segmentation of the complete single-tree point cloud is realized. The BLS method supports a top-down segmentation strategy and a bottom-up segmentation strategy, automatic adaptation can be carried out according to platform types, trunk point clouds are preferentially segmented in TLS data, and a canopy structure is preferentially constructed in ULS data.

The invention relates to a plant directional growth device for garden engineering, and belongs to the technical field of garden gardening. The device comprises a cultivation box (1), planting pipes (2) are arranged in the cultivation box (1), a plurality of cultivation grooves (3) are formed outside the planting pipes (2), water supply pipes (4) are arranged in the cultivation grooves (3) in a penetrating mode, and the ends, away from the cultivation grooves (3), of the water supply pipes (4) extend into the planting pipes (2) and extend towards the top ends of the planting pipes (2); a humidity detector (5) is inserted into the bottom of the cultivation groove (3), and a plant guiding mechanism is arranged above the cultivation groove (3) in a sliding mode. According to the device, the multiple cultivation grooves (3) are formed in the side wall of the planting pipe (2), the plant guiding mechanism is arranged above the cultivation grooves (3), multiple plants of the same kind or different kinds can be cultivated at the same time, the orientation and the growth direction of the top ends of the plants can be controlled, and plant shaping cultivation is achieved. The problems that in the prior art, the modeling efficiency is low, and mechanical damage is caused to branches and trunks of plants are solved.

The invention provides a method for grafting Tibetan white bark pine on Chinese pine, belongs to the technical field of needle-leaved tree species grafting, and solves the technical problem that the survival rate is lower than 40% due to slow joint healing, high pathogen infection rate and environmental fluctuation. According to the technical scheme, the method is characterized by comprising the following steps: cutting 1.8-2.2 cm of a vertical notch reaching xylem at the part, which is 2.5-3.5 cm exposed out of the surface of a culture medium, of a rootstock rhizome part; cutting the scion base into a symmetrical double-sided wedge shape, and immersing the scion base into a sodium citrate buffer solution containing polyvinylpyrrolidone, methyl salicylate and calcium chloride; the two sides of the vertical notch are coated with adsorption glue; inserting a scion alignment cambium and fixing by using a grafting belt; an ethanol water solution containing salicylic acid, trehalose and polysorbate 80 is applied to the interface every 2-3 days; maintaining the day temperature to be 23-25 DEG C, the night temperature to be 16-18 DEG C and the humidity to be 90-95%; when the young sprouts grow to 2-3 cm, the rootstocks are girdled, and trunks are cut off after 7-10 days. The method is used for large-scale breeding of the Tibetan pinus bungeana grafted seedlings.

The invention relates to the technical field of pest prevention and control, in particular to a method for treating pine wood nematode infected wood through poria cocos. The method comprises the following steps: cutting down current-year epidemic wood, and treating tree heads, tree trunks and boughs to complete peeling and tendon retaining treatment; uniformly cutting the trunk and the boughs into standard cut-logs; the method comprises the following steps: selecting fresh poria cocos sclerotium skin tissues as strains, and cutting according to an area greater than 50% of a cross section; pit pits are dug in the sunny slope; laying small branches on the bottom layer, placing the cut-logs in the pits, fixing the cut-logs with non-woven fabrics after inoculation, covering the upper layer with thin branches and leaves, and covering with soil; the two-stage biological process of mycelium planting, propagation expanding and pine wood nematode and medium insect killing is sequentially completed through a soil heat and moisture preservation environment; the propagation path of pine wood nematodes is blocked through the natural isolation effect of soil, deadwood obtained after poria cocos is subjected to biological verification and then smashed on site to return to forests or be made into fuel particles, and harmless and resource recycling of epidemic wood is achieved. According to the method, the problems of pine wood nematode propagation and epidemic wood treatment are synchronously solved.

The utility model provides an automatic vibration fruit shaking machine, and relates to the technical field of fruit harvesting. The automatic vibration fruit shaking machine comprises a rack, a walking mechanism, a clamping mechanism, a vibration mechanism, a collecting mechanism, an environment information collecting mechanism and a control mechanism. The control mechanism comprises a first control assembly and a second control assembly. The second control assembly is used for identifying fruit tree trunks, obstacle identification and path planning. The clamping mechanism comprises a first lead screw sliding table module, a bus steering engine and a mechanical clamping jaw. The first lead screw sliding table module is used for longitudinally moving the mechanical clamping jaw. The bus steering engine is used for driving the mechanical clamping jaw to open and close. The vibration mechanism comprises a frequency converter electrically connected to the first control assembly and a vibration motor. The collecting mechanism comprises a second lead screw sliding table module connected to the rack, a telescopic support connected to the second lead screw sliding table module and a collecting net connected to the telescopic support. The second lead screw sliding table module is constructed to be capable of driving the telescopic support to be opened or closed so as to drive the collecting net to be opened or closed.

The invention relates to the technical field of agricultural cultivation, in particular to a construction method of an improved double-Y tree shape suitable for sightseeing and picking of grapes, the constructed tree shape comprises two vertical trunks which are parallel and adjacent to each other and have a vertical distance of 60-70cm, each trunk cultivates two main vines which extend reversely along the row direction, the included angle between the trunk and the main vines is 90-100 degrees, and the main vines and the main vines are connected in parallel. Fruiting branches are cultivated on the main vines at intervals, and Y-shaped leaf curtains with upper and lower layers of differential included angles are formed; the construction method comprises the five steps of seedling seed selection and field planting, trunk and vine cultivation, fruiting mother branch cultivation, winter pruning and load capacity accurate control, wherein load capacity control achieves standardized operation through target backward pushing, flower and fruit thinning and field regulation and control. Wide-row thin planting is achieved, mechanical operation and sightseeing picking are facilitated, clusters are neat, the ornamental value is high, three-dimensional fruiting can be achieved, the picking period can be prolonged by matching with different varieties, meanwhile, the fruit loading capacity is precisely controllable, the grape yield and quality are effectively improved, and the economic benefit of a sightseeing picking garden is effectively improved; the method is suitable for large-scale popularization and application in the grape sightseeing picking industry.

The invention discloses a mountain land wind-resistant and drought-resistant persimmon tree planting method which comprises the following steps: transplanting mountain land persimmon tree grafted seedlings in spring of the first year, planting at least one rootstock seed seedling which just germinates and does not damage radicles around the grafted seedlings while planting the persimmon tree grafted seedlings or in advance, and cultivating the rootstock seed seedling into rootstock ground seedlings after one year; in spring of the next year, the rootstock ground seedlings are inarching to nearby grafted seedling trunks; before successful inarching, the planted grafted seedlings are supported manually in an auxiliary mode to resist wind. The technical problem that persimmon trees transplanted through an existing persimmon tree grafted seedling transplanting method are poor in wind resistance and drought resistance can be solved.

This invention relates to the field of rubber tree cultivation technology and discloses a method for cultivating rubber tree buds based on scale buds. The method includes: planting rubber tree bud-grafted seedlings in a propagation nursery, controlling soil moisture and applying compound fertilizer to the roots to cultivate them into single-stem buds; when the top leaves are stable and mature but the leaflets at the growing point have not yet unfolded, removing the top of the second leaf foliage below the top leaves; after removing the top, using a shade net to provide shade during specific periods on sunny days; regularly spraying a bud-promoting fertilizer containing potassium dihydrogen phosphate and urea during the aging period of the top leaves; stopping the application of compound fertilizer to the roots and spraying a bud-strengthening fertilizer containing potassium dihydrogen phosphate before cutting the buds; after sawing the trunk and cutting the buds, applying a base fertilizer containing well-rotted organic fertilizer and calcium magnesium phosphate, and repeating the topping process. By removing the top at specific times, combined with shading and phased nutrient regulation, this invention promotes uniform bud sprouting, improves the lignification of the buds, and replenishes the tree's nutrient consumption in a timely manner, ensuring the continuous propagation capacity of the propagation nursery.

The invention provides a trunk binding type pest oviposition blocking device, and relates to the technical field of forestry treatment. A binding assembly is wound on the outer wall of the main tree trunk, a fastening ring is bound to the outer end of the binding assembly, a shaking assembly is installed between the collecting assembly and the binding assembly, the tail end of the shaking assembly can correspond to the collecting assembly, and insects can descend after being placed at the tail end of the shaking assembly and are placed in the collecting assembly to be collected; a rotating assembly is hung at the top of the binding assembly through a hanging assembly, the rotating assembly can rotate, the rotating assembly rotates in one direction through a top fan assembly, a bottom fan assembly at the bottom of the rotating assembly can blow a shaking assembly, and therefore it is guaranteed that the shaking assembly can be placed in a collecting assembly to collect and block insects; the invention relates to a binding belt for preventing pests, which solves the problems that the binding belt used nowadays only can simply block specified pests and cannot ensure the blocking of all pests, so that some pests and diseases are still caused.

The invention relates to the field of disease and pest control, in particular to a disease and pest control method for pecans. The method comprises the following steps: S1, adding a prepared insecticide into an insecticide box; s2, a plurality of agent boxes are fixed to the peripheral side of a trunk of the walnut tree through hook-and-loop fasteners and binding bands; s3, smearing insect sticking glue on the peripheral surface of the hook-and-loop fastener; s4, the insecticide seeps from the bottom of the insecticide box and drips to the periphery of the bottom of the trunk, a circle of insecticide area is formed at the bottom of the trunk, and insecticide liquid drops are thrown away when wind blows; and S5, observing the remaining amount of the insecticide in the insecticide box through a transparent window on the insecticide box, and supplementing the insecticide in time when the insecticide is insufficient. The pesticide box automatically drips pesticide to achieve continuous pest and disease control, a worker only needs to add the pesticide into the pesticide box and does not need to spray the pesticide by himself / herself, and physical strength is saved.

The utility model discloses a kiwi fruit trunk and crossed fruiting mother branch cultivation device, which belongs to the technical field of kiwi fruit planting, and comprises a fixed seat and a fixed sleeve fixed on the surface of the fixed seat, a lifting screw is rotatably connected in the fixed sleeve, the outer wall of the lifting screw is in threaded connection with a lifting sleeve, and the lifting sleeve is in threaded connection with the lifting screw. A threaded column is fixed to the top of the lifting sleeve, the outer wall of the threaded column is in threaded connection with an adjusting box, an adjusting shaft is rotationally connected into the adjusting box, two guide blocks are arranged on the outer wall of the adjusting shaft, a limiting block is fixed to the outer wall of one side of each guide block, and a positioning column is arranged on one side of each limiting block. According to the cultivation device for the kiwi fruit trunks and the crossed fruiting mother branches, through a branch crossed fruiting branch cultivation mode, hollowing of the top ends of the trunks is reduced, the number of the fruiting branches is increased, the distribution range of the fruiting branches is widened, and therefore the fruiting rate of kiwi fruits is increased, and meanwhile the situation that the kiwi fruit trunks and the branches of main vines are prone to splitting is avoided.

The utility model discloses a quick-cleaning trunk mat, which relates to the technical field of trunk mats and comprises a trunk mat body. The box pad body is arranged in a multi-layer mode. A waterproof layer, a high-elastic sponge layer, a composite film layer, sound insulation cloth and a wear-resistant layer are sequentially stacked on the box cushion body from top to bottom. Wherein; wear-resistant patterns are sewn on the side, away from the non-woven fabric, of the wear A rhombic grid shape is formed; the edge of the multi-layer structure is provided with a sealing edge; liquid leaked from articles is effectively drained through the drainage grooves in the waterproof layer, the situation that other articles are damaged by the liquid is avoided, the distance between the top of the sealing edge and the surface of the waterproof layer is not smaller than 3 cm, in this way, the liquid or dust is effectively wrapped in the waterproof layer through the sealing edge, and the service life of the waterproof layer is prolonged. The box pad body is prevented from entering a gap between the box pad body and the trunk, protection of the box pad body to the trunk is guaranteed, and the box pad body is integrally formed through sewing, so that rapid washing and cleaning are facilitated.

A new and distinct cultivar of Ilex plant named ‘ROX’ is disclosed, characterized by a dense canopy of dark green foliage, and abundant red berries. Plants have shown good resistance to Anthracnose. Without trimming plants can form a full, pyramidal shaped shrub, or grow into a single clear trunk tree by removing lower branches. Plants do not require pruning to maintain a controlled and attractive shape. The new cultivar is an Ilex, suitable for ornamental garden purposes.

The utility model discloses a tool for removing pests parasitizing branches, which relates to the technical field of branch cleaning, and comprises two handles, an extrusion spring fixedly connected between the two handles, and a pin shaft fixedly connected with two ends of the two handles, two sets of cleaning assemblies are installed on the sides, away from each other, of the outer walls of the two pin shafts. Two clamping rings are made to get close to a branch through extrusion of two handles and a pin shaft, when the two clamping rings get close to the branch, an arc-shaped blade can abut against the branch to clamp the branch, and when the arc-shaped blade abuts against the branch, the arc-shaped blade and a limiting plate can slide into a limiting groove to compress a first spring; at the moment, the arc-shaped blade can clamp the branches without too large clamping force, and then the handle is held to move, so that the arc-shaped blade cleans the pests parasitized on the branches.

The invention discloses a supporting device for forest tree pest and disease damage data acquisition, and relates to the technical field of agriculture and forestry, and the supporting device is characterized by comprising a telescopic rod, a fixing plate is arranged on the telescopic rod, an insect pest trapping and killing mechanism is arranged on the fixing plate, and an insect pest data acquisition mechanism is arranged on the insect pest trapping and killing mechanism; a supporting mechanism is arranged at the bottom of the telescopic rod, a clamping mechanism is arranged on the telescopic rod, and the clamping mechanism is clamped on a forest tree and used for improving the stability of the device. The system can adapt to different tree heights, trunk diameters and complex woodland terrains, is matched with solar power supply, realizes stable field long-term operation, can accurately identify plant diseases and insect pests, predicts trends through fusion of meteorological and forest basic data, scientific analysis and an ARIMA model, triggers graded early warning and pushes prevention and treatment suggestions, and has good application prospects. Large-scale and refined forest management requirements are met, a scientific basis is provided for disease and pest control decisions, and the accuracy and efficiency of forest management and protection are improved.

Currently, there is no accurate method for extrapolating the coordinated oscillation system of all appendages in the fully appended multi-segmented ear-like insect structure and its appendage coordinated movement reconstruction method. In the fully appended multi-segmented ear-like insect structure, the left and right vertebrae are set along the length of the bottom trunk frame. The driving element is located at one end of the bottom trunk frame and is connected to the left and right vertebrae respectively. The first set of appendages is hinged to the outside of the left vertebrae, and the second set of appendages is hinged to the outside of the right vertebrae. The shell is fastened to the bottom trunk frame, and two shell flaps are set on the outer wall of the shell. The appendage coordinated movement reconstruction method is to extract motion feature data from the gait of existing crustaceans and arthropods, analyze and plan the appendage gait in the motion feature data, and then use a gait reconstruction mechanism to reconstruct various gaits, thereby completing the process of establishing the appendage movement model of the fully appended multi-segmented ear-like insect structure.

The utility model discloses an anti-rooting assembly for branch pruning, and mainly relates to the field of branch pruning equipment. Comprising a binding piece and a covering piece, the covering piece is arranged on the binding piece, the binding piece is made of a deformable rigid material, and the covering piece is arranged at a branch pruning position in a covering mode through the binding piece. A fixing through hole matched with the binding piece is formed in the covering piece, and the binding piece penetrates into the fixing through hole to be matched with the covering piece. The protection device has the advantages that protection of pruning positions of branches and trunks can be achieved, the pruning positions of the plant branches and trunks do not meet the root germination environment, it is guaranteed that the pruning positions do not have the root germination tendency, and follow-up purposeful growth of plants is facilitated.

The invention discloses a pine moth control method for pinus sylvestris, and belongs to the technical field of pine moth control, and the specific control method comprises the following steps: (1) overwintering generation control: turning a dry branch and fallen leaf layer around a trunk to expose underground overwintering pine moths, and reducing the number of overwintering generation pine moths; (2) prevention and control in a tree stage: killing tree larvae by using a pine moth prevention and control agent; (3) adult prevention and treatment: trapping the adult pine moths with black light to reduce the breeding amount and reduce the number of insects in the next year; (4) prevention and control in a tree leaving stage: killing overwintering pine caterpillars in the tree by using a pine caterpillars prevention and control agent; biological and physical combined prevention and control are utilized for relieving pinus sylvestris insect pests, and the problems that beauveria bassiana is prone to being affected by the environment and the action effect is unstable when preventing and controlling the pinus sylvestris are solved.

The utility model discloses a protection device for a trunk and a root of an ancient and famous tree, which is characterized in that an annular connecting piece I is welded at the upper end of a hollow support through a plurality of support columns I, and an annular connecting piece II is welded at the upper end of the connecting piece I through a plurality of support columns II; an annular third connecting piece is further welded to the upper end of the hollowed-out support through a plurality of third supporting columns, an annular fourth connecting piece is welded to the upper end of the third connecting piece through a plurality of fourth supporting columns, a first annular space is formed between the third connecting piece and the first connecting piece, and a plurality of first hinged supports are detachably connected into the first annular space. A second annular space is arranged between the fourth connecting piece and the second connecting piece, a plurality of second hinged supports are detachably connected into the second annular space, the first hinged supports are connected with first supporting pieces through telescopic supporting rods, and the second hinged supports are connected with second supporting pieces through telescopic supporting rods. The device is simple in structure and convenient to operate, and can be improved on the basis of an existing fence device, so that ancient and famous trees are protected.

The invention belongs to the technical field of fruit tree cultivation, and particularly relates to a method for renewing and rejuvenating an old lemon tree body. The method comprises the steps that after fruit picking is finished, old lemon trees are trimmed, and new shoots are managed; young shoot management comprises the steps that 2-3 weeks after young shoots germinate from the trimmed old lemon trees, weak young shoots and young shoots with flowers are removed, and 3-5 strong branch shoots in different directions are reserved on each trunk or main branch; when the reserved branch tips grow to about 25-35 cm, pinching is carried out, and 6-8 leaves are reserved; and cyclically performing new shoot management on the trimmed and germinated treetops by adopting the treatment method until the tree vigor recovers to an expected effect. According to the method, the purpose of quickly recovering the tree vigor can be achieved by performing tip wiping management on young shoots (trimmed young shoots) with weak shoots removed and strong shoots reserved, reserving strong and vigorous young shoots, wiping weak shoots and young shoots with flowers, reducing nutrient consumption, promoting strong and vigorous growth of reserved branch shoots and combining deep ploughing of soil and a corresponding fertilization scheme.

The invention belongs to the technical field of agricultural equipment, and particularly relates to an apple tree early spring frost prevention device which comprises a lime water containing box, a lifting mechanism is fixed to the left side of the lime water containing box, an adjusting mechanism is arranged in the lifting mechanism, and symmetrical annular plates are fixed to the left end of the adjusting mechanism; annular pipes are fixed to the interiors of the two annular plates correspondingly, and connecting hoses are fixed to the lower sides of the two annular pipes correspondingly. According to the device, original manual whitewash brushing is effectively replaced, the two annular plates are arranged outside the main branches of the fruit trees, then the two annular plates are driven to be closed through the adjusting mechanism, the whitewash is sprayed out through the annular pipes and the spray heads through the pump body, the whitewash is attached to the surfaces of the trunks of the fruit trees, and therefore the cold-proof effect is achieved; the speed is higher, and waste of lime water is not prone to being caused.

The invention discloses an unmanned aerial vehicle image crown detection method based on edge and space structure enhancement, and the method takes YOLOv8m as a basic framework, comprises an edge information enhancement module, a space structure information enhancement module, a neck network module and a lightweight shared convolution detection head, and proposes a point distance dynamic non-monotonic focusing loss function. The edge information enhancement module is used for suppressing the edge feature attenuation problem in the convolution process so as to solve the under-detection problem; the global structure information enhancement module can enhance the trunk feature extraction capability and is used for capturing the difference between the internal structure texture of the crown and the background so as to solve the problem of missing detection; the lightweight shared convolution detection head is used for greatly reducing the number of model parameters; a point distance dynamic non-monotonic focusing loss function enables the model to be focused on an anchor frame with common quality, and convergence accuracy is improved. According to the method, the problems of insufficient detection and missing detection in crown detection can be solved, model parameters are reduced while the accuracy is ensured, and the contradiction between the speed and the precision is balanced.

This invention discloses a biomimetic tree-like hydrate promoting device, belonging to the technical field of natural gas hydrate preparation. It uses tree-like absorbent paper modified with sodium dodecyl sulfate. The device includes a main trunk and 10 branches symmetrically distributed on both sides of the trunk's centerline. The width of the main trunk gradually decreases from bottom to top. The branches are spaced apart along the bottom of the main trunk, and the length of each branch gradually decreases from bottom to top along the length of the main trunk. The length of each branch is the distance from the center of the branch's edge to the center of its end. The width of the branches first increases and then decreases in the direction away from the main trunk. By mimicking the shape of a natural tree, a larger surface area is provided, allowing more gas and water molecules to contact the surface of the promoting material, effectively increasing the gas-liquid contact area and accelerating the hydrate formation process. Especially within a limited space, it enables more efficient gas conversion and rapid growth of methane hydrates.

The garden nursery stock transfer equipment with the water retention function comprises a vehicle body, movable wheels are installed at the bottom of the vehicle body, a loading block is fixedly installed in the middle of the upper end of the vehicle body, a containing groove is formed in the loading block, and a side plate is fixedly installed on the side edge of the upper end of the loading block; a center lead screw is installed in the middle of the side plate, two limiting plates are installed on the center lead screw, a cam is fixedly installed on a rotating shaft in the middle of the movable wheel, a water supplementing structure is arranged on the side edge of the cam and communicates with a flow dividing groove in the loading block, and water spraying holes are formed in the flow dividing groove. According to the garden nursery stock transfer equipment with the water retention function, branches and trunks of nursery stocks can be conveniently limited and fixed when the nursery stocks are transferred, and meanwhile when nursery stock rootstock soil is lack of water, water can be sprayed for moisturizing, and the rootstocks are prevented from being death due to dehydration.

The utility model relates to a Christmas tree base which comprises a base body (1), clamping assemblies (2) and supporting leg assemblies (3), the base body (1) is provided with through holes (11) used for fixing branches and trunks of a Christmas tree, the clamping assemblies (2) are connected with the base body (1), the clamping assemblies (2) are arranged in the base body (1), the supporting leg assemblies (3) are arranged at the bottom of the base body (1), and the supporting leg assemblies (3) are connected with the base body (1). And the clamping assembly (2) is rotationally connected with the seat body (1). According to the design, on one hand, when the supporting leg assemblies are not used, the supporting leg assemblies can be stored by rotating the supporting leg assemblies, and occupied space is effectively reduced; and on the other hand, the clamping assembly can be adjusted so as to adapt to fixation of Christmas tree branches with different diameters.

The invention relates to an arbor diameter at breast height growth sensor, an arbor diameter at breast height measuring method and application thereof. The preparation process of the arbor diameter at breast height growth sensor comprises the following steps of: inscribing a polarization-maintaining fiber grating in a polarization-maintaining optical fiber of which a coating layer is not removed to obtain a polarization-maintaining fiber grating sensor, and then calibrating strain and temperature sensitivity coefficients corresponding to a fast axis mode and a slow axis mode of the polarization-maintaining fiber grating sensor to obtain the arbor diameter at breast height growth sensor. And the arbor diameter at breast height growth sensor based on the polarization-maintaining fiber grating is obtained. During use, two ends of the stretched arbor diameter at breast height growth sensor are adhered to a trunk or a branch of an arbor, and a tail fiber at one end of the sensor is connected to a fiber bragg grating demodulator. According to the invention, on the basis that the arbor is not damaged, the influence of the fine growth dynamic state and the environmental change on the growth of the arbor can be monitored in real time, and meanwhile, the sensitivity coefficients of the peak wavelengths of the two Bragg reflection peaks of the fast axis and the slow axis in the reflection spectrum of the polarization-maintaining fiber bragg grating to the temperature and the strain are different; the problem of temperature and strain cross sensitivity of a common fiber grating is solved.

The application relates to the technical field of detection, in particular to a preparation method of sapwood section of Picea smithiana wood; the method comprises the following steps: fixing the sapwood sample of Picea smithiana after trimming in a fixing solution, softening the fixed sapwood sample of Picea smithiana in an ethylenediamine solution for 5-6 days, slicing the sapwood sample of Picea smithiana after the softening is completed, bleaching, washing and dyeing and eluting the sapwood section of Picea smithiana, making the section of the sapwood sample of Picea smithiana transparent by using an ethanol and xylene mixed solution, and sealing and shooting the section of the sapwood sample of Picea smithiana; the application increases the contact area of the sample with the FAA solution and the ethylenediamine solution, accelerates the fixing and softening speed of the sample, shortens the softening time from one month to 5-6 days, and realizes the rapid and efficient preparation of the sapwood section of Picea smithiana wood.

To provide a drum capable of easily grasping a residual amount of a linear member in a state of being kept wound around the drum.SOLUTION: A drum 1 comprises: a winding trunk part 10, around an outer periphery of which a linear member 2 is wound; and a pair of flange parts 20 (21, 22) provided at both ends in an axial direction of the winding trunk part 10. A weight-measuring device 30 capable of measuring a weight of the linear member 2 wound around the outer periphery is provided on the winding trunk part 10.SELECTED DRAWING: Figure 4

The application discloses a jujube tree self-adaptive pruning method and system based on a laser radar, and belongs to the technical field of agricultural automation. In order to solve the problem that the distance between a cutter head and a trunk is difficult to accurately keep due to disturbance of a machine tool posture in existing pruning operation, the method comprises the following steps: obtaining original distance data detected by a laser radar and machine tool posture data detected by a posture sensor, fusing and solving a real relative distance after elimination of the posture disturbance; obtaining a current position of the cutter head center through forward solution of a mechanical arm-push rod kinematic model according to a current swing angle of the mechanical arm; receiving a target distance input by a user; calculating a displacement vector according to the target distance, the real relative distance and the current position of the cutter head, and mapping the displacement vector into a target length of a servo push rod through inverse solution of the kinematic model; driving the push rod to move the cutter head to the target distance, and forming closed-loop control by monitoring the position of the cutter head in real time. The method is mainly used for self-adaptive pruning of jujube trees, and constant control of the distance between the cutter head and the trunk under dynamic disturbance is realized.

According to the branch pressing device for fruit planting, splicing is carried out after two bottom plates are placed on the two sides of a trunk of a tree through a splicing structure, two semicircular fixing rings can be located on the two sides of the trunk to protect the trunk after splicing is completed, clamping is carried out through vertical clamping of an upper clamping hoop and a lower clamping hoop, and therefore the trunk can be protected; the height of the fixing ring can be adjusted through the lifting structure, so that the height of the rotating block with the T-shaped cross section where a plurality of ropes are located can be reduced at the same time when the fixing ring descends, and the fixing ring is more convenient to use. In the process, the rope is pulled to pull the lower clamp at the other end downwards to achieve branch pressing, and synchronous pressing of a plurality of branches can be achieved at the same time.