136 results about "Thinning" patented technology

The invention provides a sunlight greenhouse winter seedling raising method for angelica sinensis. The Chinese angelica sunlight greenhouse winter seedling raising method comprises the steps that a sunlight greenhouse is built in an area with the altitude being 2000 m or below, the azimuth angle of the sunlight greenhouse is 5-7 degrees from the south to the west, the base angle of a front roof is 60-65 degrees, the elevation angle of a main lighting surface is 22-25 degrees, and the elevation angle of a back slope is 37-38 degrees; the method comprises the following steps: sowing angelica sinensis seeds in a greenhouse from late November to early and middle December, wherein the seeds comprise early bolting seeds, side ear seeds or main ear seeds; the environment in the greenhouse is controlled, the temperature in the coldest month is not lower than 12 DEG C, the ground temperature is not lower than 10 DEG C, and vernalization of the angelica sinensis seedlings is avoided; managing the seedlings, including water management, sunlight management, temperature regulation and control, weeding and thinning, and disease and pest control. The Chinese angelica sunlight greenhouse winter seedling raising method provided by the invention has the advantages that Chinese angelica seedling raising is carried out in a zone with the altitude of 2000m or below, and the problem that the ecological environment is damaged by Chinese angelica early bolting, Chinese angelica seed reserving, Chinese angelica prepared land seedling raising and Chinese angelica high-altitude seedling raising can be solved.

The invention provides a method for repairing degraded moso bamboo forest soil. The method comprises the following steps: selecting a degraded moso bamboo forest; the moso bamboo forest is divided into a plurality of strip-shaped areas according to a high-density-low-density classification mode, and high-density areas and low-density areas which are distributed alternately are formed; the moso bamboo forest is subjected to strip-shaped thinning treatment, strip-shaped areas are divided according to a high-density-low-density classification mode, and moso bamboos of different growth ages are subjected to thinning according to a certain proportion; performing soil preparation treatment on the moso bamboo forest after thinning; planting nitrogen-fixing plants in the soil under the moso bamboo forest; and treating the soil under the moso bamboo forest by using a soil conditioner. According to the method for restoring the degraded moso bamboo forest soil, arbor layer-under-forest-soil integrated restoration is achieved, systematic improvement is conducted on multiple links of thinning, nitrogen fixation and fertilization, the content of N in the soil and the content of organic matter in the soil are increased, and the diameter at breast height of new bamboo is increased.

The invention relates to the technical field of ecological restoration, in particular to a method for restoring a tropical degraded forest based on thinning and complementary planting of nitrogen fixation precious tree species. The method comprises the following steps: dividing a degenerated forest into three types, namely a mild type, a moderate type and a severe type according to canopy density and forest stand composition; for the light tropical degraded forest, a stand structure is built through target tree marking and interference tree felling, stand renewal is driven in cooperation with pruning work and selective felling, and a different-age double-layer forest is cultivated; for the moderate tropical degraded forest, a forest window updating unit is constructed, and survival rate and preservation rate dual monitoring is executed to maintain the forest window updating unit; for the severe tropical degraded forest, native vegetation is reserved through strip cleaning, seedlings are planted in a planting strip to construct a strip recovery substrate, synchronous complementary planting is carried out, and finally the strip succession process is stabilized in combination with continuous tending. According to the method, the problem of repairing the fragmented area is effectively solved, synergistic interaction of soil improvement and economic value improvement is achieved, and the technology generalizability is remarkably enhanced through a standardized operation system.

The invention discloses a progressive structure adjustment, quality-improving cultivation and actual performance evaluation method for a needle-leaved pure forest. The method comprises the following steps: (1) on-site treading; (2) dividing an operation area; (3) crown boundary falling; (4) thinning old forests; (5) width reinforcement and forest cultivation; and (6) carrying out actual effect evaluation. According to the method, structure adjustment and tree species updating of the artificial needle-leaved pure forest are implemented step by step and purposefully through a series of working procedures, and on one hand, the species diversity of the needle-leaved forest and the forest appearance landscape are remarkably improved through gradual supplementation of broad-leaved tree species; and on the other hand, forest endoplasm transformation and community optimization are accelerated by thinning old and cultivating young animals and improving soil, the forest productivity and the forest ecological service function are remarkably improved, excellent forest habitat, reasonable structure, good function and benefit improvement are promoted, and excellent inhabiting and nursing conditions are provided for various wild animals.

The present application provides a method and device for thinning flowers and fruits based on image recognition. The method obtains a first image of a fruit tree to be processed captured by an image acquisition device. Based on the first image, the fruit tree type of the fruit tree to be processed is determined. According to the fruit tree type, a flower and fruit thinning model that matches the fruit tree type is determined. Based on the flower and fruit thinning model, a plurality of target information to be processed corresponding to the fruit tree to be processed and the attribute value of each target to be processed are determined. Among them, the target to be processed includes at least a flower bud image and a young fruit image. The attribute value represents the fruit setting rate of the target to be processed after processing. The first image, the second image of each target to be processed and the attribute value of each target to be processed are sent to a preset expert planting model to determine the processing risk value of the target to be processed. Based on the attribute value of each target to be processed and the corresponding processing risk value, the processing target is determined so that the flower and fruit thinning management terminal corresponding to the image acquisition device thins the flowers and fruits of the fruit tree to be processed according to the processing target.

The invention discloses an intelligent management system and method for apple trees, relates to the technical field of agriculture, and monitors the growth environment, plant health, pest and disease risk and other data of the apple trees in real time by integrating a data acquisition module, an AI large model, an RAG technology decision module and the like. Structured and unstructured data are processed by using an AI large model, an agricultural knowledge base is retrieved in combination with an RAG technology, accurate decisions of operations such as pesticide spraying, flower thinning and fruit thinning are realized, and meanwhile, an Internet of Things equipment linkage mechanism and carbon footprint accounting are introduced. The system can generate interpretable suggestions containing carbon footprint analysis and regional joint defense basis, and an optimization strategy is fed back through a closed loop. According to the invention, the intelligent and precise levels of apple orchard management are improved, the labor cost and resource waste are reduced, yield-environment dual-objective optimization is realized, and technical support is provided for green agriculture.

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 utility model discloses a kind of apricot tree thinning hand-held auxiliary devices, relating to apricot tree thinning technical field, including: adjusting rod, the top end of adjusting rod is equipped with mounting bracket, the both ends of mounting bracket are equipped with movable assembly respectively, one end of movable assembly is equipped with fruit thinning assembly and flower thinning assembly respectively, movable assembly includes installation shell, connecting shaft, rotating shaft and second elastic positioning assembly, installation shell is respectively installed at the both ends of mounting bracket, rotating shaft is installed at the outer side of one end of connecting shaft, second elastic positioning assembly is symmetrically installed at the both sides of connecting shaft, connecting shaft is installed at the inner side of installation shell by rotating shaft, the other end of connecting shaft is connected with fruit thinning assembly and flower thinning assembly respectively. When fruit thinning assembly and flower thinning assembly do not need to be used in the utility model, by pressing positioning knob inward, and applying overturning pressure to connecting shaft downward, so that fruit thinning assembly and flower thinning assembly overturn ninety degrees and are stored.

The utility model discloses a plant flower thinning manipulator for strawberry planting management in the technical field of strawberry pruning tools, which comprises a long handle, an upper handle and a distance adjusting mechanism, the upper handle is rotatably connected with a lower handle, one end of the lower handle, which is not connected with the upper handle, is fixedly provided with a lower traction rope, the bottom end of the long handle is fixedly connected with an upper cutting edge, and the upper cutting edge is fixedly connected with a lower traction rope. The upper cutting edge is rotationally connected with the lower cutting edge through a mounting shaft, the connecting frame is connected with the lower traction rope through a winding and tensioning mechanism, and the winding and tensioning mechanism is used for winding and unwinding the lower traction rope. The flower thinning device can solve the problem that a traditional flower thinning means easily causes fatigue and body injury of managers.

The invention discloses an operation mode suitability evaluation method based on forest carbon sequestration and sink increase, and relates to the technical field of ecological protection and forest operation, and the method comprises the following steps: calculating basic dynamic light transmittance according to satellite multispectral data and soil microbial biomass carbon data of a target forest region; constructing a light inhibition compensation mechanism, and correcting soil microbial biomass carbon data through the mechanism so as to adjust a calculation result of the basic dynamic light transmittance; determining a soil animal disturbance coefficient and calculating an ecological elasticity index; and dynamically adjusting an intermediate cutting intensity value according to the index deviation proportion and generating a staged intermediate cutting scheme. According to the method, the ecological elasticity index is calculated by measuring the key ecological indexes before and after interference in real time, the original intermediate cutting strength is dynamically adjusted according to the comparison relation between the ecological elasticity index and the preset elasticity threshold value, the correction value is formed, the operation intervention strength is accurately matched with the instant bearing capacity of an ecological system, and ecological degradation caused by excessive intervention is avoided.

The utility model discloses a flower and fruit thinning trimmer for persimmon planting. The flower and fruit thinning trimmer comprises a grip convenient to hold and stretch; a flower and fruit receiving assembly with multiple side openings is stretched out of one side of the grip, and the flower and fruit receiving assembly is arranged on persimmon flowers and fruits needing to be trimmed in a sleeving mode through the openings in one side; the flower and fruit receiving assembly is connected with a pruning assembly, branches where persimmon flowers and fruits are located are pruned, and the pruning assembly is arranged on the other side of the grip in a sleeving mode; the grip is further provided with a force component which is used for dispersing gravity when flowers and fruits are trimmed. The utility model belongs to the technical field of persimmon planting, particularly relates to a flower and fruit thinning trimmer for persimmon planting, and aims to at least solve the problem of high risk of flower and fruit thinning operation during persimmon planting.

The present invention provides a corn thinning auxiliary device, comprising a walking support mechanism, a lying plate, an isolation cover, and a seedling-pulling and crushing mechanism. The walking support mechanism is used to realize the walking and supporting of the lying plate, the lying plate can be moved up and down for adjustment and positioning, an observation hole is provided at one end of the lying plate, the isolation cover and the seedling-pulling and crushing mechanism are hung on the bottom of the lying plate by a first tension spring and a second tension spring respectively, and the isolation cover and the seedling-pulling and crushing mechanism are adjacent to the observation hole, the isolation cover is used to realize the isolation and protection of corn seedlings that need to be retained, and the seedling-pulling and crushing mechanism is used to realize the pulling out and crushing of corn seedlings that need to be pulled out. Manually lying on the lying plate to perform thinning operations greatly reduces the intensity of manual labor; when thinning two seedlings whose roots are relatively close to each other, the edge of the isolation cover is used to press around the roots of the seedlings, so that the corn seedlings located in the isolation cover can be effectively prevented from being pulled out synchronously, thereby improving the quality of thinning.

The invention relates to the technical field of fruit tree cultivation management, and particularly discloses an efficient flower thinning agent for peach trees and application thereof, and the flower thinning agent comprises the following main effective components: T6P with the concentration of 250-750 mg / L and ethephon with the concentration of 50-100 mg / L. According to peach trees treated by the flower thinning agent, the fruit setting rate is controlled between 20% and 25%, the weight of a single fruit reaches 190 g or above, the SSC content exceeds 12%, the fruit hardness is kept between 6.5 kg / cm < 3 > and 7.0 kg / cm < 3 >, and the fruit quality is remarkably improved. The formula is simple in components, low in cost and suitable for large-area popularization; the influence of environmental factors is small, and the stable flower thinning effect can be kept under different weather conditions.

The invention discloses a high-value utilization method of grape young fruit thinning and removing waste, and relates to the technical field of grape and wine industry byproduct processing. The invention provides a high-value utilization method of grape young fruit thinning waste, aiming at the problem that high-value-added utilization is difficult to realize due to the fact that thinned young fruits generated in the grape cultivation and management process are abandoned in an orchard. According to the method, three products with remarkable economic values, namely an acid increasing agent, a grape young fruit polyphenol extract and an animal feed, are successfully produced by carrying out comprehensive processing and resource utilization on grape young fruits which are thinned and removed. The application of the method not only solves the problem of environmental pressure caused by random discarding of thinned young fruits, but also realizes efficient conversion and cyclic utilization of agricultural wastes, and brings a new economic growth point for the grape planting industry.

The invention provides a method for reducing the dead fruit rate of macadamia nuts and preventing pericarp yellowing, which comprises the following steps: pruning fruit trees in the early stage of flower bud differentiation, spraying a composite insecticide in the early stage of flowering, and keeping the soil moisture content to be 60% or above. Spraying fruit retention liquid in a flower thinning and fruit retention period, using a root conditioning fertilizer and an insecticide in a flower falling and fruit setting period, spraying a leaf fertilizer and an insecticide in a fruit expanding period, and applying potassium sulfate in a final shell hardening and grease conversion period. By adding the anti-stiff fruit root slow-release fertilizer into the root conditioning fertilizer, it is guaranteed that fruit trees can continuously absorb mineral elements in high-temperature weather to reduce the stiff fruit rate, foliar fertilizer is sprayed to improve cell antioxidant enzyme activity and form a protective film, and the yellowing probability is reduced, so that the passing rate and peel yellowing of the fruit trees in the growth cycle are reduced, and the fruit quality is improved. The economic benefits of the macadamia nuts are greatly improved.

This invention provides a green cultivation method for improving the quality and efficiency of low-value litchi orchards. The method includes collecting data on the existing variety retention status, planting density, canopy overlap rate, canopy shading rate, number of new shoots per tree, and proportion of diseased and insect-infested branches in the orchard to be renovated. Based on these indicators, the low-value type and renovation intensity level are determined. Renovation paths are matched according to variety renewal, canopy closure renovation, or mixed renovation types, using methods such as top grafting, thinning and pruning, or a combination of both. The planting density after thinning, pruning height, number of grafted branches per tree, and number of new shoots per tree are determined based on the renovation intensity level. After the grafted branches survive or the second batch of new shoots turns green, the number of shoots is counted, and re-grafting, re-pruning, or topdressing to promote shoot growth are performed based on the statistical results. This invention enables the renovation of low-value orchards to shift from experience-based processing to a continuous management approach combining classification, grading, and feedback correction.

The invention relates to the technical field of wine grapes, in particular to a wine grape cultivation method which comprises the following steps: preparing to cultivate wine grape plants, forming planting ditches, applying base fertilizer in the planting ditches, covering soil and backfilling, adding soil amendment, backfilling to deep ditches until the deep ditches are filled and leveled up, and transplanting grape seedlings into the planting ditches. When the wine grape plants grow to a germination period to a color changing period, the wine grape plants are irrigated with a care solution in the germination period to the color changing period; when the wine grape plants grow from the color changing period to the mature period, a nutrient solution is irrigated from the color changing period to the mature period, and then a urea solution is sprayed on leaf surfaces in a matched mode; when the wine grape plants grow from the mature period to the deciduous period, a nutrient solution is irrigated from the mature period to the deciduous period; and after water management, beginning to fix tips and pinch. On the premise that the quality and yield of grapes are guaranteed, simplified, efficient and sustainable development of the cultivation process is achieved through scientific and reasonable management means.

This invention relates to a tea scenting machine. This device uses a three-dimensional method to scent tea, which can save space significantly, thereby improving space utilization and achieving cost savings. Furthermore, the device can quickly and efficiently convert tea leaves from a thick pile to a thin layer or vice versa, effectively preventing the tea leaves from becoming stale or burnt due to delayed thinning. The entire conversion process is quick and convenient, saving time and effort, thus greatly reducing labor costs and the labor intensity of workers, thereby effectively improving the production efficiency of the scenting process.

The utility model relates to the technical field of pear tree management devices, in particular to a pear tree fruit thinning device. Comprising an upper plate, a rectangular groove is formed in the upper portion of the upper plate, the portions, on the left side and the right side of the groove, of the upper plate form shifting rods, the upper ends of the shifting rods are pointed ends, and the portions, on the left side and the right side of the groove, of the upper plate are elastically and rotationally connected with cutting assemblies; the rotating rod is connected with a driving unit, the driving unit can enable the free ends of the blades to rotate towards the middle of the upper plate, forward projections of motion trails of the free ends of the two blades from front to back have an intersection point, a supporting rod is fixed to the lower end of the upper plate, and a handle is fixed to the lower end of the supporting rod. According to the device, the groove is formed in the upper part of the upper plate, so that fruit stems of young fruits needing to be removed on a pear tree can conveniently enter the groove, the young fruits needing to be removed can be conveniently separated from the young fruits needing to be reserved, and the fruit thinning efficiency can be improved.

The application discloses a fruit tree crown layer branch thinning and pruning tool, which comprises a rack, a gear motor, a belt transmission mechanism and a cutter disc assembly, the gear motor is installed on the rack, the cutter disc assembly comprises a transmission shaft, a fixing assembly, an upper disc cutter, a lower disc cutter and a support disc group, the fixing assembly is installed on the transmission shaft through a first bearing set, and the fixing assembly is fixedly connected with the rack; the gear motor is in transmission connection with the transmission shaft through the belt transmission mechanism; the upper disc cutter is fixedly installed at the top end of the transmission shaft, the lower disc cutter is fixedly installed at the bottom end of the transmission shaft, and the support disc group is installed on the transmission shaft through a second bearing set and located at the side close to the lower disc cutter. The upper disc cutter and the lower disc cutter which are spaced apart can thin and prune the branches in the interior of the fruit tree crown, the upper disc cutter is in non-support cutting, the lower disc cutter is in support cutting under the action of the support disc group, the application range is increased, the stability during cutting is increased, and the cutting quality and efficiency are improved.

The present invention relates to the technical field of urban greening operations, and specifically to a novel handheld electric leaf-combing device. The device is mainly composed of four parts, namely a housing and an adjustment structure, a motor and a battery, a transmission structure, a fixed blade, and a shearing blade. The housing and the adjustment structure are used to fix and adjust the blade angle, and the transmission structure drives and converts the movement of the motor, and shearing is achieved through two sets of blades. In the past, there was no device specifically designed to achieve leaf thinning, and leaves were removed manually. This design solves the problem of conveniently and efficiently removing leaves when transplanting plants without easily damaging the operator and the plant itself. The device can be used for daily gardening activities, agriculture, and urban greening operations.

The utility model relates to a gap-adjustable electric fruit and flower thinning device which comprises a first base body and a second base body, and the first base body is hinged to the second base body. The front part of the first base body is provided with a first clamp arm, and the rear part is provided with a first handle; the front part of the second base body is provided with a second clamp arm, and the rear part is provided with a second handle; the first clamp arm and the second clamp arm are each provided with a roller, and the rollers are driven by a motor. When the first handle and the second handle are closed, a plant passes through the space between the two rollers; the fruit thinning device further comprises a gap adjusting device, the gap adjusting device is used for adjusting the gap between the first clamp arm and the second clamp arm when the first clamp arm and the second clamp arm are closed, the applicability of the fruit thinning device is improved, and fruit thinning / flower thinning can be conducted on different plants.

The present invention discloses a method for obtaining parameters for apricot and plum planting, and a method for apricot and plum planting. The method comprises: obtaining the theoretical load capacity of branches and branch groups at different base diameters and opening angles; calculating the maximum and minimum number of fruits that a single apricot and plum branch can bear at different opening angles and the same base diameter; calculating the maximum and minimum number of fruits that a branch group can bear at different opening angles and the same base diameter; performing fruit thinning after natural fruit drop; and using the experimental parameters corresponding to the experimental group with the best fruit quality as planting parameters. The method for obtaining parameters for apricot and plum planting of the present application can obtain optimal apricot and plum planting parameters, thereby improving fruit quality.

The application discloses a low-efficiency forest reconstruction management method, and belongs to the technical field of low-efficiency forest management. The reconstruction management method comprises the steps of forest regulation, density regulation, mixed forest cultivation and post-period management and protection. The forest density is adjusted by forest regulation and thinning, and the health condition is improved, so that suitable habitat conditions are created for the growth of trees. Then, suitable native trees and shrubs are selected for mixed cultivation, and a mixed forest with complex structure and rich species is formed, so that the forest regeneration capacity is improved, the low-efficiency forest is positively succeeded, and the forest ecological benefits are improved. In the process, a composite regulation fertilizer is prepared and applied. The composite regulation fertilizer can help the seedlings to safely pass the slow growth period, promote root growth, adsorb the migrated nutrients in the surrounding soil and fix the nutrients at the root system of the seedlings, improve the competition ability of the seedlings for the soil nutrients in the forest, efficiently utilize the soil nutrients in the forest, ensure the good growth of the seedlings and effectively improve the afforestation benefits.

This invention relates to the field of forestry technology and discloses a method for regulating the cultivation of *Machilus chinensis* in forest gap microenvironments. The method includes: constructing a digital twin of *Machilus chinensis* plants by fusing lidar point cloud data, multispectral time-series data, and soil microenvironment parameters; calculating a comprehensive competition index based on three dimensions: light shading, nutrient competition, and spatial expansion potential; generating a graded thinning priority sequence by combining forest gap boundary characteristics and target retention density; and outputting a structured instruction set containing geographic coordinates, diameter at breast height (DBH) grade, and felling order. This invention achieves quantitative, precise, and traceable thinning operations, improving the growth efficiency and resource utilization level of *Machilus chinensis*.

A new and distinct variety of interspecific tree. The following features of the tree and its fruit are characterized with the tree budded on ‘Nemaguard’ Rootstock (non-patented), grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, California, with standard commercial fruit growing practices, such as pruning, thinning, spraying, irrigation and fertilization. Its novelty consists of the following combination of desirable features:1. Tree having a vigorous, upright growth habit.2. Tree being a regular and productive bearer of medium size fruit.3. Fruit with very good flavor and eating quality.4. Fruit with a high degree of red skin color.5. Clingstone fruit with firm, red flesh.

The invention discloses a grafting method suitable for quickly renewing mulberry varieties in a mulberry field of middle-high-trunk mulberries. The grafting method comprises the steps of branch reserving, grafting, side branch removing, fixing, bag removing, core stopping, summer cutting, fertilizing, bud thinning, leaf picking, follow-up management and the like. The grafting method can be put into production in half a year, so that the production period is remarkably shortened, the waste of land resources and time is reduced, and the land cost is saved. Through variety optimization, the stress resistance of mulberry varieties can be remarkably improved, the unit yield of a mulberry field is increased, and the economic benefits of the silkworm and mulberry industry are improved. Meanwhile, excellent single plants can be rapidly propagated, biological, economic, genetic and other basic characters of the mulberry germplasm resources are observed, and the mulberry germplasm resources are rapidly identified.

This utility model relates to the field of flower and fruit thinning technology, and discloses a plug-in type thinning wheel replacement structure for a flower and fruit thinner. It includes a housing, a fastening assembly inside the housing, and a cleaning assembly on the housing. The fastening assembly includes a mounting cavity, and the housing has a mounting groove. A slider is slidably connected within the mounting cavity, and a pull rod is mounted on the slider. A toggle block is fixedly connected to the side of the pull rod away from the slider. With this plug-in type thinning wheel replacement structure, when the thinning wheel needs to be replaced, pulling the toggle block outward releases its positioning effect on the thinning wheel, allowing it to be removed. Simultaneously, the pull rod drives the slider outward, compressing a spring and locking the new thinning wheel onto the connecting seat. Finally, releasing the toggle block allows it to reset under the spring's elasticity, automatically fastening the thinning wheel, thus achieving the advantage of quick and easy installation and removal of the thinning wheel.

The utility model relates to a precise flexible flower thinning machine for fruit trees. The precise flexible flower thinning machine comprises a walking device, a connecting frame installed on the walking device and a flower thinning unit installed on the connecting frame through an adjusting device. The flower thinning unit comprises a flower thinning support and a plurality of flower thinning execution mechanisms installed on the flower thinning support. The adjusting device comprises a transverse adjusting mechanism installed on the connecting frame, a vertical adjusting mechanism and an inclined adjusting mechanism, wherein the vertical adjusting mechanism and the inclined adjusting mechanism are installed on the transverse adjusting mechanism. Flower thinning operation is achieved by beating flowers of fruit trees through the flower thinning rope, lateral movement, lateral dip angle adjustment, longitudinal lifting adjustment and front-back dip angle adjustment of the flower thinning support are achieved through the hydraulic adjusting system, and therefore the flower thinning arms are driven to complete lateral movement, longitudinal movement and lateral and front-back dip angle adjustment. The height and angle of the flower thinning arm can be adjusted according to the tree shape and height of the fruit tree to fit the thinned fruit tree, and the rotating speed of the flower thinning shaft is adjusted according to the flower density of the fruit tree flowers to improve the precision of flower thinning operation.

The invention provides a precise flower thinning and fruit retention method for torreya grandis female trees, and belongs to the technical field of economic forest cultivation. According to the method, by observing the relative positions of flowers and fruits of biennial bearing branches, it is found that series-parallel type competition is most intense, the fruit setting potential is lowest, series type competition is weakest, and the fruit setting potential is highest, and it is determined that the branches, judged to be in the series-parallel type, in the biennial bearing branches are preferentially thinned in the subsequent flower thinning treatment; micro nutrition competition difference existing due to different relative positions of flowers and fruits in the cross-year flower and fruit coexistence phenomenon is introduced into a decision basis; then, through a flower thinning treatment test on three-year-old bearing branches, it is clear that flower thinning treatment is conducted seven days before pollination, new leaves germinated by female flower buds are reserved during flower thinning treatment, the fruit setting rate can be effectively increased, refined operation is achieved, flower and fruit nutrition competition is effectively relieved, and the yield of flowers and fruits is increased. The precise flower and fruit thinning and protecting method based on the combination of flower and fruit position classification and leaf reserving and flower thinning is formed, the effect is stable, operation is easy, and the method is suitable for popularization.