60 results about "Main stem" patented technology

The invention relates to a river network grading system and method based on a graph theory and confluence cumulant, and belongs to the technical field of water conservancy projects and geographic information. Comprising the following steps: acquiring original DEM data and water system data, and converting the water system data to a preset projection coordinate system; extracting a primary river network based on the DEM data, and screening the primary river network in combination with the length of the river network and the area of the drainage basin to obtain a simplified river network; river network flow calculation: carrying out flow assignment on each river network element in the simplified river network based on the confluence cumulant; graph theory modeling: abstracting the simplified river network into a directed graph model; and river network grading: reverse tracing is carried out by taking the water outlet as a starting point, and the hierarchical relationship between the trunk and the branch is determined by combining the in-degree / out-degree and the edge weight of the node, so that river network grading is realized. According to the method, river network grading is upgraded from morphological description to hydrological function description, and the method is suitable for high-precision river network refined analysis, intelligent water conservancy emergency management and other scenes.

Disclosed is a method for regulating confluence of tributaries with a large drop difference and a large angle into a trunk canal. The method includes: banking up a reservoir at an upstream end of a tributary river, and widening a water surface, such that uniform distribution of water flows is completed; then conducting scouring and energy dissipation to reduce a flow velocity and kinetic energy of the water flows; then conducting flow-slowing sedimentation, such that sediment is deposited on one side of the tributary river connected to a downstream side of a trunk stream; and then conducting flow diversion at one side of the tributary river connected to an upstream side of the trunk stream, such that an included angle of confluence of tributary river water into the trunk stream is reduced.

This invention discloses a method, device, medium, and product for determining flood diversion strategies for flood storage and detention areas based on a balance perspective, relating to the field of flood diversion management technology. The method includes: determining the excess flood peak and excess flood volume of the middle and lower reaches of the main stream in each river section after the operation of the reservoir group scheduling in a preset period; constructing a correlation graph between the flood diversion volume and the reduction value of the flood diversion flood level under each set combination of flood diversion parameters; determining the utilization priority and flood diversion volume of all flood storage and detention areas in all river sections; determining the cumulative flood diversion volume of each flood storage and detention area according to the order of utilization priority; constructing a knowledge graph of flood storage and detention area utilization based on the correlation graph and each cumulative flood diversion volume, and determining multiple flood diversion schemes; and selecting one flood diversion scheme as the target scheme from among the flood diversion schemes based on the objective function and constraints to achieve flood diversion. This method can support the timely and appropriate scheduling and utilization of flood storage and detention areas, meet the rapid decision-making needs of key indicators for the utilization of flood storage and detention areas, and reduce flood disaster losses.

The invention discloses a space remote sensing image analysis method for detecting surface water and underground water exchange in a river region based on surface temperature, and belongs to the field of remote sensing detection surface temperature anomaly analysis. According to the method, background field construction is carried out on pixels in a space by combining single-scene high-resolution surface temperature data and land cover classification data, and temperature thermal anomaly of a river main stream is extracted by adopting an adjacent pixel temperature anomaly analysis method, namely, the temperature thermal anomaly of the river main stream is extracted by analyzing subtle change of surface temperature in a remote sensing image; and identifying abnormal pixels which are obviously different from the temperature characteristics of the surrounding area. The abnormal pixels often correspond to areas where surface water and underground water exchange is active, such as permeable zones, spring water exposure points and the like. The method can be applied to drainage basin water resource management and ecological protection, and the conversion path and intensity between surface water and underground water can be deduced by further analyzing and processing the abnormal pixels extracted by the method and combining background information such as geology and hydrology.

The invention discloses a river and lake system mutual jacking effect strength identification method and device, equipment and a medium, and relates to the field of jacking effect identification. The method comprises the following steps: according to observation data of a river and lake system, determining an upstream and downstream actual water level difference and an inlet downstream main stream flow when a jacking effect exists; according to the flow and the water level of the upstream main stream of the inlet, the actual water level difference and the water level of the downstream main stream of the inlet, establishing a water level-flow relation of the upstream main stream of the inlet considering the water return influence; according to the flow and the water level of the downstream main stream of the inlet, establishing a water level-flow relation of the downstream main stream of the inlet without water return influence; under the condition of no branch flow convergence, based on the water level-flow relation, the theoretical water level difference under the condition of no jacking effect is calculated; according to the actual water level difference and the theoretical water level difference, a jacking strength index value is calculated; the jacking strength index value is used for representing the mutual jacking action strength of the river and lake system. According to the method, the accuracy and reliability of identifying the mutual jacking action strength of the river and lake system can be improved.

The invention provides a multi-temporal-spatial-scale river sediment tracing method, and relates to the field of geomorphology and river dynamics. According to the method, light release light (OLS) samples of terraces and floodplains and zircon sand samples of corresponding layers are collected on the sections of a source (branch) and a sink (main stream), and different age sequences are divided in combination with contemporary zircon sand samples of a tender beach; the contribution rate of a source to a sink is directly calculated by using a zircon age spectrum matrix, and a quality contribution rate algorithm is optimized in combination with a zircon mass percentage. According to the method, contemporary and historical multi-time-scale sediment traceability is realized, the traditional fitting simulation process is simplified, the calculation efficiency and accuracy are improved, and the method is suitable for sediment source analysis in areas poor in data.

The utility model relates to the technical field of grape planting, in particular to a drip irrigation device for grape planting, which comprises an annular notch-shaped rubber water pipe, the lower end of the annular notch-shaped rubber water pipe is communicated with a plurality of drip irrigation heads, the upper end of the annular notch-shaped rubber water pipe is symmetrically provided with wire clamping mechanisms, and each wire clamping mechanism comprises an L-shaped plate. The drip irrigation device comprises an annular notch-shaped rubber water pipe, a drip irrigation head, a fixing block, a threaded column and a rotating piece, the annular notch-shaped rubber water pipe is sleeved with an L-shaped plate, the L-shaped plate is fixedly connected to the upper end of the annular notch-shaped rubber water pipe, a wire clamping groove is formed in the horizontal wall of the L-shaped plate, and a wire pressing plate is arranged on the vertical wall of the L-shaped plate in a sliding and sleeving mode. The drip irrigation device has the advantages that through cooperation of the annular notch-shaped rubber water pipe, the drip irrigation head, the L-shaped plate, the wire clamping groove, the wire pressing plate, the fixing block, the threaded column and the rotating piece; the drip irrigation pipes in the drip irrigation system for grape planting are easy to install, water drops can drop on the ground around grape trunks, suspended laying of the drip irrigation pipes is easy to operate, and the uniformity of the roots of grape vines nourished by water is high.

The application provides a simulation device for nitrogen migration and transformation, which comprises an input unit, a simulation unit, a biological unit, a regulation unit and a data processing unit, the input unit is used to simulate the migration of nitrogen source input from a downstream river to a surrounding area; the simulation unit comprises a river channel simulation mechanism, a confluence triangular area simulation tank, a first side bank simulation tank of a main stream and a second side bank simulation tank of the main stream, the biological unit controls aerobic / anaerobic partition and nitrification / denitrification partition by regulating carbon source, oxygen and controlling soil structure / particle, the regulation unit is arranged in the confluence triangular area simulation tank, the first side bank simulation tank of the main stream and the second side bank simulation tank of the main stream, and is used to regulate dissolved oxygen, PH and conductivity, and the data processing unit is used to give a prediction result. The application solves the problem that a traditional water tank cannot simulate the interaction of two rivers, and improves the accuracy of simulation experiment.

The utility model relates to the technical field of green planting and discloses a sand land windproof sand fixation green planting equipment based on bentonite, which comprises a planting cylinder and a supporting mechanism arranged on the planting cylinder. The planting cylinder below the fixing ring and the green plants are buried in the soil, then the rotating handle drives the threaded rod to rotate, the adjusting seat is pushed to move along the limiting groove, the supporting plate abuts against the main stem of the green plants, the main stem of the green plants is supported, the problem that the green plants are blown down by the wind is avoided, the supporting plate is adjustable and can be used to support green plants of different thicknesses, when the green plants grow thicker, the first spring arranged between the supporting plate and the adjusting seat allows the supporting plate to shrink, the supporting position of the supporting plate can change with the growth of the green plants, and the problem that the fixed supporting position affects the growth of the green plants is avoided.

The application belongs to the technical field of oil exploitation and blockage removal device, and particularly relates to a T-shaped nozzle water jet cutting blockage removal device and a dredging blockage removal method, aiming to solve the problem of poor flushing and dredging effect and difficulty in cleaning the pipe wall deposits of the sand control screen pipe blockage removal device in the prior art. The T-shaped nozzle water jet cutting blockage removal device comprises a high-pressure jet pump, a packer, a downhole filter, a centralizing device and a nozzle in sequence in communication with each other. At least one T-shaped nozzle is arranged on the nozzle peripheral wall. The T-shaped nozzle comprises a main stem pipe and two branch stem pipes. One end of the main stem pipe is in conductive connection with the nozzle, and the two branch stem pipes are in conductive connection with the end portions of the main stem pipe away from the nozzle, and the two branch stem pipes are arranged in opposite directions along the same straight line. The end of the main stem pipe away from the nozzle is provided with a first jet port, and the end portions of the two branch stem pipes away from each other are provided with second jet ports. The application has the advantages of higher dredging effect, and the pipe wall deposits can be removed more easily.

The present invention discloses a method for determining the outflow threshold value of a river channel in a river-controlled estuary based on an improved entropy weight method, comprising the following steps: S1: collecting historical topographic data of a fixed section of a main stream channel at the tail end of a river-controlled estuary, and historical daily average hydrological data of hydrological stations along the channel; S2: applying the improved entropy weight method to the main stream channel at the tail end of the estuary based on the hydrological and topographic data, calculating the contribution weights of different indicators in water-sediment conditions and riverbed boundary conditions to the outflow of the channel, and identifying the main controlling factors of the outflow of the channel according to the calculation results; S3: establishing a prediction model for the outflow threshold value of an estuary channel under the joint control of riverbed boundary conditions and water-sediment conditions based on the main controlling factors of the outflow; the present invention simplifies the calculation method of the outflow threshold value and greatly improves the applicability of the method; the present invention proposes a method for determining the outflow threshold value of an estuary channel by considering water-sediment and boundary conditions at the same time, which can be applied to river-controlled estuaries with different outflow periods, and provides guidance for estuary flood control and river channel management.

The application discloses a method for rapidly improving river water dissolved oxygen, and belongs to the technical field of environmental protection. The method comprises the following technical steps: (1) water quality fluorescence fingerprint database establishment; (2) pollution source dissolved oxygen concentration gradient division; (3) low-oxygen discharge outlet dissolved oxygen and water flow determination; (4) water quality fluorescence fingerprint similarity comparison; and (5) river required ecological water flow calculation. The method comprises the following steps: establishing a water quality fluorescence fingerprint database, dividing a pollution source dissolved oxygen concentration gradient, determining low-oxygen discharge outlet dissolved oxygen and water flow, comparing water quality fluorescence fingerprint similarity, and calculating the ecological water flow required for river water dissolved oxygen to reach the standard. Then, the ecological water flow is dispatched to equivalently hedge the water body with low dissolved oxygen concentration in the river mainstream, so that the river water dissolved oxygen concentration can be simply, rapidly, efficiently and accurately improved, water resource waste in the water flow dispatching process is avoided, the method has good precision and strong operability, and is easy to popularize on a large scale.

This invention provides a method for selecting plants that possess desired traits regarding the internode length of the main stem. [Solution] One aspect of the present invention is a selection method that includes a step of selecting plants using the length of the young shoot at the third leaf development stage as an indicator.

The application discloses a device for collecting fry and juvenile fish in the main stream of the Yellow River, which comprises a collecting head, a collecting box, a drainage end and a support, the left and right sides of the collecting box are respectively provided with the collecting head and the drainage end, and the collecting box is further provided with the support, the collecting head is a conical cylinder, the large end of the conical cylinder is provided with a multi-hole conical cover which is gathered away from the conical cylinder, the small end of the conical cylinder is communicated with a water inlet pipe of the collecting box, the drainage end is a drainage pipe on the collecting box opposite to the water inlet pipe, a flowmeter and an axial flow pump are arranged on the end of the drainage pipe away from the collecting box, the collecting box is provided with a one-way self-closing structure and a fry and juvenile fish filtering conical cylinder corresponding to the water inlet pipe and the drainage pipe, and the fry and juvenile fish filtering conical cylinder is provided with an induction cylinder on the front and back sides. The device is used for collecting fry and juvenile fish in an active way, and the food induction cylinder is arranged in the collecting box to attract the fry and juvenile fish to stay, so that the fry and juvenile fish can be efficiently collected, and the fish quality resources in the main stream of the Yellow River can be conveniently and quickly monitored.

The invention provides a pinus khasys dwarfing pruning treatment method, and relates to the technical field of pinus khasys dwarfing afforestation. The treatment method mainly comprises the following steps: girdling bark at the top end of a pinus khasys sapling, cutting off below a girdling position after a period of time, carrying out primary pruning on a primary side branch, then carrying out branch pulling treatment, taking a part as a fixed side branch, taking a part as an allowance side branch, and arranging a notch at the joint of the allowance side branch and a trunk, after the cut grows into a tree knot, the remaining lateral branches are cut off, the fixed lateral branches are subjected to secondary pruning, the fixed lateral branches are subjected to third-time pruning after a period of time, and final pruning is completed. According to the method, the defects in the prior art are overcome, thickening of trunks and lateral branches of pinus khasys is effectively promoted in a pruning mode, and the purpose of dwarf afforestation is achieved.

The application discloses a kind of based on three-dimensional point cloud image's Pinus massoniana partial phenotypic parameter automatic measurement method. Three-dimensional point cloud image of Pinus massoniana plant under different viewing angles is collected;Pretreatment obtains the three-dimensional point cloud of Pinus massoniana plant;Registration is carried out to obtain fused point cloud;Extract the minimum spanning tree and the skeleton point of main stem, and then obtain the main stem point cloud and leaf point cloud;According to the minimum spanning tree, main stem point cloud and leaf point cloud processing obtain main stem length, Pinus massoniana ground diameter, average leaf length and leaf number.The method of the application can automatically identify Pinus massoniana plant in three-dimensional point cloud image, and complete the strategy of main diameter length, ground diameter, average leaf length, leaf length, improve the detection efficiency, realize high-precision, high-efficiency crop phenotypic data acquisition, achieve fast, low-cost crop phenotypic parameter accurate and nondestructive testing.

The utility model discloses a water delivery arrangement system, particularly discloses a water delivery arrangement system for relieving low-temperature water drainage, and belongs to the technical field of design and construction of water conservancy and hydropower engineering structures. According to the water delivery arrangement system for relieving low-temperature water drainage, the excavation work amount is remarkably reduced, and it can be effectively ensured that water with the relatively high temperature and the relatively sufficient flow can be taken at any time. The water conveying arrangement system comprises a water storage reservoir which is arranged on a main stream river channel through a river blocking dam, and is characterized by further comprising a branch ditch river channel, a water conveying pipeline and a water inlet tower arranged at the input end of the water conveying pipeline, the branch ditch river channel is communicated with the water storage reservoir, and the water inlet tower is arranged on the branch ditch river channel; the river bottom elevation of the branch ditch river channel is higher than the riverbed elevation at the corresponding position of the main stream river channel and lower than the dead water level elevation of the reservoir; in the water taking process, the water inlet tower obtains stored water in the reservoir area of the water storage reservoir layer by layer from top to bottom through the branch ditch river channel.

A chenopodium quinoa cultivation protective cover belongs to the technical field of chenopodium quinoa cultivation and comprises an elastic outer protective cover, and a support is arranged in the outer protective cover. The support comprises a connecting plate and an annular buckle, a plurality of first supporting rods which are obliquely arranged are arranged on the connecting plate at intervals in the annular direction of the connecting plate, the first supporting rods are hinged to the annular buckle through second supporting rods, the annular buckle is used for being connected to a quinoa main stem in a clamped mode, and the support is used for being detachably installed on the quinoa main stem; the outer protective cover covers the periphery of the support under the action of elasticity so as to protect the ears, prevent the outer protective cover from deforming to knock off flowers, effectively prevent external pollen from entering, prevent hybridization from affecting self-pollination of the quinoa, and guarantee high purification of grains.

This invention discloses a method for measuring cavitation in plant xylem, comprising: calculating image parallax in an image sample set and recovering scene depth information; extracting the center line of the main stem based on the segmentation results of the main stem; determining the two-dimensional pixel coordinates of the target vibration measurement point above the plant roots along the direction of the center line of the main stem; and calculating the three-dimensional spatial position of the target vibration measurement point by combining the scene depth information corresponding to the target vibration measurement point; automatically coarsely aligning the target vibration measurement point above the plant roots; obtaining the optimal alignment posture of the laser Doppler vibrometer; collecting vibration signals from the target vibration measurement point above the plant roots; and measuring the cavitation in the plant xylem using the collected vibration signals. This invention addresses the problems of manual reliance, low efficiency, poor repeatability, and unstable signal quality caused by on-site interference in existing technologies for measurement point identification and LDV alignment, and achieves automatic positioning, automatic alignment, and cavitation event measurement of the position above the plant roots.

The application discloses a kind of based on self-vibration effect's breaking down gate sand diversion wall structure, the branch stream side of dry flow and branch stream confluence has gate sand area, along the transverse extension of branch stream is used to guide water wall of high water level, guide water wall is set in gate sand area upstream;The middle part of guide water wall is equipped with gate, gate is installed in gate, and the guide water wall of gate extends downstream direction and is equipped with water retaining wall, water retaining wall extends into gate sand area, and water retaining wall includes left side wall and right side wall that are symmetrically arranged, left side wall and right side wall are all ladder-shaped, and the left side wall and right side wall are surrounded to be used to flush sand harmonic cavity for water retaining and flushing, and the downstream of flush sand harmonic cavity is narrower than upstream.The application also discloses corresponding use method.The application utilizes the structure of the application when breaking down gate sand, forms as intense resonance phenomenon as possible by artificial control height difference, and the breaking down efficiency and effect of gate sand are improved by corresponding water flow phenomenon.

The utility model discloses a forestry planting seedling transplanting device which comprises a protective base, a plurality of containing grooves are evenly formed in the top of the protective base, a plurality of round bearing discs are evenly and rotatably connected to the bottom of the protective base, and power assisting rods are fixedly connected to the outer walls of the round bearing discs. Two U-shaped pieces are fixedly connected to the outer wall of the protective base, and side plates are slidably connected to the inner walls of the two U-shaped pieces. Through the arrangement of the protection base, the placement groove, the U-shaped piece, the side plates, the insertion holes, the locking bolts, the fixing plate, the T-shaped block, the sliding limiting plate, the sponge and the fastening bolts, the height of the protection base can be adjusted, nursery stocks of different heights can be supported subsequently, trunks of the nursery stocks are limited between the fixing plate and the sliding limiting plate, and therefore the nursery stocks are prevented from being damaged. The multiple nursery stocks can be prevented from shaking excessively during transportation, water is sprayed downwards through the multiple atomizing nozzles, root systems of the nursery stocks are wetted, and soil ball loosening caused by excessive dryness is avoided.

This invention discloses a method for sub-basin delineation in small and medium-sized watersheds based on a distributed model, comprising the following steps: S1, collecting digital elevation model (DEM) data, performing depression filling processing, and extracting preliminary river network information; S2, extracting the actual river system and calculating the elevation difference of the main stream grid; S3, adjusting the DEM data based on the elevation difference to optimize the river network extraction results; S4, calculating watershed morphological parameters and classifying the watershed using a manifold learning method; S5, constructing an optimal threshold calculation model for sub-basins and dynamically adjusting the sub-basin delineation threshold; S6, performing flow direction calculation, confluence analysis, and sub-basin delineation, and optimizing the sub-basin boundaries; S7, validating the method using a distributed hydrological model, analyzing the impact of the delineation results, and optimizing the sub-basin delineation parameters. This invention integrates multi-scale features, dynamic threshold optimization, and hydrological network topology to improve the accuracy of sub-basin delineation, boundary continuity, and hydrological simulation stability, achieving intelligent watershed delineation.

This invention discloses a method for determining the true source of a river, belonging to the field of hydrological science and technology. The method includes: acquiring the three-dimensional skeleton lines of the main stream and tributaries of the river to be determined; determining a set of candidate tributaries at the distal end; quantifying the water volume contribution of each tributary to determine a set of candidate tributaries based on water volume; determining a set of candidate tributaries based on the straightness of the flow direction of each tributary; determining a set of candidate tributaries based on altitude advantage; obtaining the final candidate set; collecting existing river data for determining true sources; using the analytic hierarchy process (AHP) to obtain the weights of distance, water volume contribution, straightness of flow direction, and altitude advantage; calculating the probability of each tributary in the final candidate set being the true source based on the weights of these factors; and selecting the tributary with the highest probability of being the true source as the true source of the river to be determined. This invention solves the problem of existing technologies relying too heavily on subjective judgment of river sources.

The invention discloses a joint scheduling method for a branch leading project based on a water storage index, belongs to the technical field of water supply scheduling, and can solve the problem of low project operation efficiency caused by incoordination of supply and storage modes in the prior art. The method comprises the following steps: S1, according to hydrological information of a main stream and water demand information of a water using object, dividing a scheduling period into a first scheduling period in which the water storage amount is greater than the water supplementing amount and a second scheduling period in which the water storage amount is smaller than the water supplementing amount; s2, determining a plurality of correlation factors of the water storage indexes, and determining the water storage indexes of the first scheduling time period and the second scheduling time period according to the plurality of correlation factors; s3, constructing a combined scheduling model of the water supply reservoir and the water storage and storage reservoir according to the water storage indexes of the first scheduling time period and the second scheduling time period; and S4, determining a combined scheduling scheme of the water supply reservoir and the water storage and storage reservoir by using the combined scheduling model. The method is used for carrying out joint scheduling on the lead-in branch project.

The invention relates to the technical field of reservoir operation scheduling, and discloses a reservoir dam overflowing flow correction method, device and equipment, a medium and a product. According to the method, flow monitoring stations are arranged at multiple preset positions of a main stream and branches to collect flow change information of the corresponding monitoring positions, and the flow change information collected by all the monitoring stations is combined; the target generation position of the non-control traffic can be reversely traced, and physical separation of the controllable traffic and the non-control traffic is realized. The propagation time of the non-control flow from the generation position to the front of the dam is calculated in combination with the distance from the target position to the front of the dam and the preset water flow velocity, and second non-control flow change information is obtained through derivation in combination with the first non-control flow change information, so that accurate prediction of the time of the non-control flow before reaching the dam and the flow process is realized. And on the basis of the controllable flow change information before the controllable water flow reaches the dam, the second non-control flow change information is superposed to obtain the flow change information before the dam, so that the subsequently calculated overflowing flow data can truly reflect the actual overflowing of the dam.

The invention relates to the technical field of planting, and discloses an ammopiptanthus mongolicus planting device which comprises a seedling raising frame, bottom supporting assemblies and a transplanting assembly, the seedling raising top is used for being filled with nutrient soil for sowing and seedling raising, the bottom of the seedling raising frame is overhead, bottom supporting grooves are evenly formed in the upper end of the seedling raising frame, the bottom supporting assemblies correspond to the bottom supporting grooves one to one, and each bottom supporting assembly comprises a bottom supporting cover and a flange; the transplanting assembly comprises a cutting cover with an opening in one side, and a seedling trunk can be sleeved with the opening. According to the ammopiptanthus mongolicus planting device, centralized management of the seedling raising frames is matched with a modular system for precise seedling taking of the detachable supporting bottom and the transplanting assembly, efficient intensive management is achieved in the seedling raising stage so as to reduce the cost, and fragile root systems of ammopiptanthus mongolicus are protected to the maximum extent by forming a complete root-soil complex in the transplanting stage; and in combination with the degradable cover body, the balance between firm support in the transplanting process and free growth of the root system after planting is realized.

The utility model discloses a mud flat replanting mangrove seedling supporting device which comprises three sub-supporting plates and a supporting rod, the sub-supporting plates are spliced to form a triangular supporting plate, a round hole is formed in the center of the triangular supporting plate, an internal thread through hole is formed in each sub-supporting plate, a clamping head is arranged on one side of the splicing position of the sub-supporting plates, and a clamping groove is formed in the other side of the splicing position of the sub-supporting plates. One side of the supporting rod is provided with a clamping head, the other side of the supporting rod is provided with a clamping groove, the clamping head of one of two adjacent supporting sub-plates is clamped into the clamping groove of the other supporting sub-plate, the clamping head is a degradable clamping head, the supporting rod is a threaded rod, and the lower end of the supporting rod is fixedly provided with a spiral supporting leg. The triangular supporting plates are of a split mounting type structure, the triangular supporting plates can be fixed together only through clamping connection, plant trunks are placed in the round holes, and other fixing parts are not needed. According to the utility model, the stability is greatly enhanced; the clamping heads are made of degradable materials, the clamping positions lose efficacy after degradation, namely the triangular supporting plates are separated, plant growth is not affected, and manual separation is not needed.

The invention relates to the technical field of agricultural engineering, and discloses an image-recognition-driven sparse-layer pruning method and system for a trunk of Hongmeiren citrus, and the method comprises the steps: obtaining an original RAW image and a point cloud through a multi-source visual perception module, and constructing a semantic tree topological structure with red and green channel linear light intensity; a spectral lignification index and a spatial gradient thereof are calculated based on the red-green channel ratio, gradient cliff points are identified to distinguish trunk extension heads from lateral branches, and a re-truncation or retention instruction is generated. The Young modulus of the branches is estimated through spectral characteristics, a finite element model is established for virtual fruit bearing load rehearsal, and a flower and fruit thinning instruction is generated according to predicted displacement after virtual gravity is applied. And combining interlayer vertical projection analysis to identify the sheltered branches to generate a retraction instruction, and generating a fertilization suggestion according to the whole leaf-fruit ratio index. According to the method, spectral analysis and mechanical simulation are fused, quantitative pruning and source library balance management of the Hongmeiren citrus are achieved, and the problem that traditional pruning lacks physical basis is solved.

The invention discloses a synthetic flow flood forecasting method, system, equipment and medium fusing a physical mechanism and deep learning, and belongs to the technical field of hydrology and water resources, and the method comprises the steps: obtaining the section distribution data and rainfall site distribution data of a main stream and branch river reach, and constructing a watershed river section network; and through the watershed river section network, testing river reach basic propagation time under different flows in a rainfall-free period to obtain a flow-propagation time corresponding relation, and constructing a rainfall-free basic propagation time model based on a reverse interpolation method. According to the method, a physical mechanism and deep learning are fused, section distribution of main streams and branch streams and rainfall site data are fully utilized, watershed river channel characteristics are accurately described, river reach propagation time laws under different flows are effectively obtained, rainfall-free reservoir flow and rainfall correction inflow are comprehensively integrated, and the timeliness of downstream flood reservoir forecasting is remarkably improved.

The invention discloses a multi-objective optimization reservoir gate strategy recommendation method and system, and relates to the reservoir scheduling and data processing technology, and the method comprises the steps: obtaining the landform data of main stream and branch stream coverage in a basin coverage range in advance, and collecting the hydrological data of a basin; according to the topographic data, determining an influence factor of the collected hydrological data on a dam section; establishing a scheduling optimization target of the current gate; establishing a constraint condition of the scheduling optimization target; solving an optimal solution set by adopting a simulated annealing algorithm according to the scheduling optimization target and the constraint condition, and dynamically updating influence factors according to the monitored hydrological data in the solving process so as to realize self-adaptive adjustment; and outputting a reservoir gate opening and closing strategy according to a solving result. The method is used for processing hydrological data more finely, introducing historical operation experience, and accurately triggering an optimization process, so that the operation efficiency and the operation safety of the reservoir are improved.