35 results about "Land management" patented technology

The invention relates to the technical field of urban planning, and particularly discloses an urban planning construction land management and control system based on big data, and the system comprises the steps: obtaining geological environment, landform, engineering construction and human activity data through multi-source data collection; multi-source data fusion analysis is adopted to construct a construction land comprehensive evaluation field including geological stability, engineering suitability and environmental bearing capacity; a development suitability partition is generated based on a density peak value spatial clustering method; updating the development suitability level by dynamically monitoring the verification process; according to the method, accurate analysis and early warning of the three-dimensional deformation field are realized, and scientificity and safety of urban planning in a complex geological environment are improved.

The invention discloses a facility agriculture land use system, and relates to the technical field of facility agriculture land use, and the system comprises a vector data processing unit which generates an initial pattern spot data set with a coincidence degree identifier; the field intelligent proof unit is used for generating a proof data packet with a unique file number; the third-level joint review unit is used for performing third-level review; the structured achievement management unit is used for establishing an associated index and a structured database; and the cross-module data pushing unit is used for outputting an audit completion voucher and realizing a data closed loop. According to the method, a systematic architecture of vector data processing, field intelligent proof, three-level joint review, structured achievement management and cross-module data pushing is constructed, pattern spot extraction, proof verification and trend analysis intelligentization are achieved through an AI algorithm, a typed template, layered review and an automatic pushing mechanism are used, and the system and the method are suitable for large-scale popularization and application. The problems that traditional facility agriculture land management is scattered in data, split in process and low in efficiency are solved, and a traceable integrated management closed loop is formed.

The invention discloses a method for evaluating the composite obstacle degree of southern red and yellow soil degraded soil and application. By constructing the southern red and yellow soil composite obstacle index, systematic quantitative evaluation of acid, thin, plate and sticky main soil obstacles is achieved, and the limitation of a traditional single index and a subjective weighting method is broken through. The method is driven by large-scale soil data and has scientificity, objectivity and generalizability. The southern red and yellow soil degraded soil compound obstacle index provided by the invention can reveal dominant obstacle factors formed by compound obstacles, can support agricultural production and land management, and has important significance for soil obstacle diagnosis and agricultural improvement.

The invention relates to the cross technical field of land resource management and information technology, in particular to a land management system and method based on a GIS system and big data analysis, and the system comprises a data layer, a support layer and an application layer. The data layer comprises a multi-source data collection module and a GIS spatial database; the support layer comprises a big data processing engine, a GIS analysis tool set and a machine learning modeling platform, the application layer comprises an intelligent supervision module, a planning auxiliary module and a decision support module, and the system is suitable for intelligent management and decision support of land resource investigation, planning, protection and development of a full life cycle.

The application discloses a kind of based on unmanned aerial vehicle auxiliary land type identification management method and system, it is related to land type identification technical field, including through unmanned aerial vehicle collection land remote sensing image, and processing and feature extraction, strengthen the land type features in image;Land type identification model is constructed, land type identification standard is set, input is according to the land type feature image after strengthening training and analysis, obtain land type identification result;The identification result is rechecked and corrected, according to the land type after correction is authenticated and managed.The application obtains high-resolution ground surface image using unmanned aerial vehicle, can clearly show the detailed features of ground surface, improve identification accuracy, can obtain image at any time and is not affected by factors such as cloud cover, night lighting etc.Improve identification precision, ensure the accuracy of identification result, help land management and planning, have important application value for disaster emergency, environmental protection and other tasks.

This invention presents 8 groundbreaking technique utilizing nano-zeolite, sourced from natural zeolite, natural kaolin, and water treatment sludge, to effectively remediate degraded or acidic soils. Acidic soils pose significant challenges to agricultural productivity, hindering crop growth and nutrient availabili The application of nanozeolite addresses these issues by reducing soil acidity, which fosters a more favorable pH environment for plant development. Additionally, nano-zeolite enhances nutrient retention, ensuring that essential minerals remain accessible to crops. ዘ5 porous structure facilitates improved water retention and aeration, further promoting soil health. This innovative approach not only revitalizes degraded lands but also aligns with sustainable agricultural practices, reducing the reliance on chemical fertilizers and contributing to environmental conservation. By transforming waste materials into a valuable resource, this invention offers a practical solution to soil degradation challenges faced by farmers and land managers.

The invention discloses biochar spraying equipment for land salinization treatment and a use method of the biochar spraying equipment, and relates to the technical field of land governing.The biochar spraying equipment comprises a mixing tank, a feeding port is formed in the upper portion of the mixing tank, and a spraying structure is installed on the side face of the mixing tank; the spraying structure comprises a nozzle installed on the side face of the rotating ring and a second conveying pipe installed on the inner side of the mixing tank, a driving device is installed on the upper portion of the mixing tank, a rotating rod is installed at the output end of the driving device, a plurality of stirring rods are installed on the outer side of the rotating rod, and a suction assembly is arranged in the mixing tank. The suction assembly comprises a third conveying pipe installed at the end of the rotating rod and a plurality of connecting pipes installed on the side face of the third conveying pipe, by arranging the suction assembly, a suction head can rotate and move in the mixing tank during suction, all areas in the mixing tank can be covered more comprehensively and effectively, and the mixing efficiency is improved; the liquid and the biochar can be uniformly and quickly sucked, and the problem of insufficient suction or excessive suction in a local area is avoided.

The invention discloses a spraying device for land treatment and ecological restoration, and relates to the technical field of spraying devices. A steering structure is arranged in the middle of the lower end face of the bottom plate, a buffering structure is arranged on the lower end face of the steering structure, a driving structure is fixedly connected to the upper end face of an inner cavity of the buffering structure, universal joints are evenly and rotatably connected to the lower portion of the inner cavity of the buffering structure, and advancing structures are rotatably connected to the front side and the rear side of the buffering structure. Through a buffer structure on a steering structure, a driving structure, a universal joint and an advancing structure are installed and placed in the using process, then through stretching out and drawing back of a spring telescopic rod, the reclamation cone is automatically inserted into soil, additional manual operation is not needed, manpower is saved, it is ensured that the reclamation depth is consistent, and a liquid outlet groove in the reclamation cone can spray pesticide while reclamation is conducted; direct contact between deep soil and the agent is achieved, the remediation efficiency is improved, the agent is injected into the deep position of the soil through the liquid outlet groove of the reclamation cone, and the problem of diffusion of pollutants in the soil layer is solved.

The application discloses a kind of urban land reserve scale prediction system and method, it is related to urban planning and land management technical field, the application is by collecting urban land reserve total, annual increase and consumption area, land structure distribution and planning target structure etc. Data, calculate the dynamic coefficient reflecting the dynamic change of reserve scale and the structure adaptation coefficient for measuring the adaptation degree of structure and historical target. After the dynamic coefficient and the structure adaptation coefficient are standardized, the comprehensive index is calculated by combining weight, according to which the annual adjustment ratio is determined, and then the benchmark forecast reserve is calculated. Combined with the historical actual adjustment ratio, generate the forecast reserve of conservative, benchmark and active three kinds of scenes, determine the final forecast reserve by comparing with the average value of history. The application comprehensively dynamic trend and structure adaptability, supports multi-scenario analysis, and can provide scientific, flexible decision-making basis for urban land reserve planning.

The application discloses a kind of salinized land differentiation partition management and crop adaptation method, it is related to salinized land management and agricultural engineering field.The method is by obtaining the soil salinization index data of plot unit, water salt transport condition data and engineering implementability constraint data, to each plot is normalized and union partition analysis, generates different management type area;For each management type area generates multiple rounds of management path, and reaches crop target soil state window to reach the accessibility determination, to filter adaptation crop;After management implementation, by retest data triggers path switching or parameter adjustment, realizes dynamic closed-loop control.The application can consider soil physicochemical properties and water salt transport condition at the same time, give consideration to engineering implementation constraint, realize the fine and dynamic management of salinized land management and crop planting decision, improve the stability and practical application feasibility of management effect.

The utility model belongs to the technical field of garden maintenance, particularly relates to a multifunctional drainage ditch cleaning device for garden and land reclamation, and aims to solve the problems of low efficiency, high strength and potential safety hazards in work of the conventional manual cleaning. In order to solve the problems that an existing machine is single in function, inconvenient to effectively discharge silt and clean the inner wall, poor in adaptability and the like, the following scheme is provided that the device comprises a supporting frame, the supporting frame is formed by sequentially and fixedly connecting a plurality of circular frames, and a first mounting frame is arranged outside the supporting frame; the two ends of the supporting frame are fixedly connected with the inner walls of the two sides of the first mounting frame respectively, and a rotating pipe rotationally penetrates through the interior of the supporting frame. The single equipment can integrate the functions of smashing, washing and brushing, and the overall structure can ensure that silting in the drainage ditch can be effectively cleaned.

This invention discloses a method for extracting tobacco field contours from large-scale GPS point cloud data based on graph neural networks, belonging to the field of tobacco field contour extraction. The method includes: S1, collecting and standardizing GPS point cloud data of the tobacco field area; S2, employing an anomaly detection mechanism based on point feature distribution, combined with a point cloud denoising network to clean and complete the data; S3, constructing a corner detection module, combining residual structure and graph attention mechanism to extract key corners; S4, constructing a graph structure based on candidate corners, and using a dynamic graph convolutional network to predict connectivity; S5, optimizing the contour topology through reinforcement learning to improve boundary continuity and geometric consistency; S6, using a particle swarm optimization algorithm to fit boundary curves, generating a closed and smooth tobacco field contour; and S7, outputting the final contour coordinate sequence and structure map for area calculation and land management in agricultural systems.

The invention relates to the technical field of forest land ecological restoration, and discloses a forest land soil pore regulation and control and slow release fertilizer deep application synergistic device which comprises a U-shaped mounting frame mounted on an agricultural machine, a rotary blade group, a regulation and control module, a deep application module and a detection module, the deep application module is used for deeply applying a slow-release fertilizer into forest land soil and comprises a plowshare and a fertilization nozzle; the detection module comprises a probe used for detecting forest land soil pores. The forest land soil pore regulation and control and slow-release fertilizer deep application synergistic device integrates four core functions of rotary tillage crushing, pore detection, pore regulation and control and slow-release fertilizer deep application, and the same U-shaped mounting frame is matched with an agricultural machine, so that multiple procedures are completed through one-time operation. The rotary blade group firstly completes crushing of surface hardened soil and synchronous driving of linkage work of the detection module and the regulation and control module, and finally the deep fertilization module performs follow-up fertilization, so that repeated back-and-forth operation is not needed, the forest land soil improvement period is greatly shortened, the manpower and agricultural machine energy consumption cost is reduced, and the requirement for large-scale forest land management is met.

The application relates to the field of land measurement, in particular to a measuring device for land management. The device comprises an extension rod, a machine head arranged at the top of the extension rod, and a hand book arranged on the extension rod; further comprising a mounting mechanism arranged on the extension rod, a lifting ring slidingly arranged on the mounting mechanism in the vertical direction, a plurality of reinforcing support rods penetratingly arranged on the lifting ring, a limiting assembly arranged on the lifting ring to limit the movement of the reinforcing support rods, before the measuring point, the reinforcing support rods can freely move in the vertical direction, after the measuring point and the vertical state are adjusted, the freedom of the reinforcing support rods in the vertical direction is limited through the limiting assembly. In the application, the natural falling of the plurality of reinforcing support rods can adapt to the uneven ground, after the reinforcing support rods are fixed through the clamping blocks, the extension rod can be vertically and stably erected on the ground, at this time, the hand book cannot cause the extension rod to unintentionally tilt, and the measuring precision is maximally ensured.

The application relates to the technical field of sand land management machinery, and discloses a crawler-type grass pressing and sand covering integrated machine which comprises a pulling mechanism and a grass pressing mechanism, the pulling mechanism is used for driving the grass pressing mechanism to move, the grass pressing mechanism comprises a connecting frame which is connected to the pulling mechanism, a walking wheel which is rotationally connected to the connecting frame through a rotating shaft, a grass pressing disc which is connected to the rotating shaft, coaxially arranged with the walking wheel and rotates together, the outer diameter of the grass pressing disc is larger than that of the walking wheel, a plurality of containing openings for grass entering are uniformly and spaced apart along the circumferential direction of the grass pressing disc, and a feeding hopper is installed on the connecting frame, forms a material placing cavity with an opening facing upwards, has a gap for the upper part of the grass pressing disc to enter the material placing cavity, and has a discharging opening which is communicated with the gap and is used for moving the grass in the containing openings from the discharging opening to the feeding hopper when the grass pressing disc rotates. The application can improve the overall work efficiency of grass pressing.

The invention discloses an information retrieval and management method for construction of a land management policy knowledge graph. The method comprises the following steps: performing clause and fact declarative sentence extraction on policy clauses in a structured land policy database by utilizing a large language model, and taking a time entity and a spatial geographic entity as attributes of the policy clauses; constructing a time entity containing a time attribute, a space geographic entity containing a space attribute and a space-time knowledge graph database of a triple; performing semantic partitioning on the query data by using a large language model to obtain a query combination; and creating a plurality of parallel retrieval paths matched with the query combination by utilizing a space-time retrieval planner, summarizing search results, and then calling and summarizing the retrieval results containing a plurality of policy terms from the structured land policy database. According to the method, the precision and generalization of complex space-time semantic understanding are improved, multi-dimensional collaborative retrieval optimization is realized, and the method has remarkable effects on policy query, execution feedback and management efficiency.

This utility model relates to the field of land management technology. Specifically, it is a saline-alkali land desalination device, including a drainage pipe and further comprising: an annular fixing frame fixedly connected to the outer side of the drainage pipe, a mesh support frame fixedly connected to the outer side of the annular fixing frame, a non-woven fabric layer on the outer side of the mesh support frame, and connecting components fixedly connected to both sides of the drainage pipe. This device, through the connection components, provides a channel for brine flow through a guide sleeve. The portion of the adjusting sleeve located inside the guide sleeve is spherical. This structure allows the adjusting sleeve to rotate flexibly within the guide sleeve, thereby adjusting the angle of the desalination pipe to adapt to different soil salinity distributions, expanding the desalination coverage area, and improving brine collection efficiency. The corrugated pipe deforms with the adjusting sleeve during rotation, ensuring the sealing of the connection points and preventing brine leakage at the joints.

The invention discloses a multi-scale visual analysis method for an aeration zone water and salt migration driving mechanism, and belongs to the technical field of hydrogeology and environment monitoring. According to the method, a brand new multi-physical field coupling driving model is established, a spatial-temporal heterogeneity quantitative index of moisture-salt migration in a non-uniform pore medium is introduced, and continuous visual analysis from a micro pore scale to a macro region scale is realized by combining an independently designed visual mapping function. The method comprises the following steps: collecting multi-source heterogeneous hydrogeological data; constructing a driving potential field model based on pore network topology evolution; defining a coupling kinetic equation of salt transportation and a multi-scale feature extraction operator; designing a visual rendering parameter mapping rule; and the water-salt migration process is presented through a multi-dimensional dynamic map. The method can accurately reveal the driving mechanism of water and salt migration in the aeration zone and the cross-scale association rule of the driving mechanism, and is suitable for the fields of soil improvement, saline-alkali soil treatment, groundwater pollution prevention and control and the like.

This utility model provides a positioning device for land management surveying, including a pole with helical blades installed on its outer surface. A top plate is installed at one end of the pole, and a plug-in lug is installed in the middle of the side of the top plate facing away from the pole. A pointed tip is installed at the end of the pole away from the top plate. A perforation is opened on one side of a pad, and the pointed tip is inserted into the perforation. The pad is connected to the top plate through a connector. This utility model has the following beneficial effects: it prevents the pointed tip from chipping, rolling, or deforming due to impact, ensuring the integrity of the pointed tip. This ensures the cutting efficiency during subsequent rotation into the soil, avoids slippage and positioning deviation caused by tip damage, extends the service life of the pole, and reduces tool replacement costs.

This utility model discloses a land sampling device for land management, belonging to the field of land sampling technology. It includes: a sampling tube containing a land sampling component for land management; two assembly plates, both fixedly connected to the outer periphery of the sampling tube, in a C-shape. The inner wall of each assembly plate is rotatably connected to a C-shaped stabilizing plate via a damping shaft. Multiple spikes to enhance stability are welded to the sides of the stabilizing plate, and threaded channels are also provided on the sides of the stabilizing plate, with anchor rods threadedly connected to these channels. Multiple discharge channels for discharging material during sampling are provided on the outer periphery of the sampling tube. Movable plates are rotatably connected to the inner walls of these discharge channels, and the movable plates are fixedly connected to the sampling tube via latches. The sampling component includes: an assembly circular plate disposed within the inner cavity of the sampling tube; and two limiting rods. This land sampling device for land management is not only highly stable but also adjustable and easy to carry.

This utility model provides a modular combined salt drainage structure device for saline-alkali land, relating to the field of saline-alkali land management technology. It includes a salt drainage pipe and a filter layer. The top and bottom of the clamping main body and clamping segments are cut to create lugs, and the lug end faces have through holes for penetration. The surface at the connection point of the two salt drainage pipes is provided with the clamping main body and clamping segments. The bottom end faces of the clamping main body and clamping segments are provided with a main connecting plate, which connects the clamping main body and clamping segments via a movable hinge. The top of the clamping segments is provided with a fastening buckle, and the clamping segments and fastening buckles are connected by a hinge. One end of a connecting ring is located inside the through hole on the lug end face of the clamping main body, and the other end of the connecting ring is connected to the fastening buckle. The salt drainage pipes are connected by a locking mechanism and fixed with ground-inserted fixing stakes, allowing for quick assembly and disassembly. This facilitates regular cleaning of salt crystals, and in case of failure, individual pipe parts can be replaced, saving costs.

This invention discloses a remote sensing land cover data fusion method based on category-accuracy geographic weighting, comprising: preprocessing multi-source land cover products to unify spatial reference and classification systems; constructing a validation sample set using stratified random sampling combined with visual interpretation; providing two methods for determining the number of neighborhood samples N, with an adaptive method dynamically adjusting N based on sample density and product category consistency, and adjusting the neighborhood radius to adapt to the sample distribution; calculating pixel scales GWUA and GWPA based on spatial weights, calculating the fusion probability using GWUA, and arbitrating the average GWPA when balancing. This invention achieves spatially adaptive estimation of accuracy, improving the accuracy and stability of the fusion results, and providing reliable data support for ecological monitoring and land management.

This invention discloses a method for constructing a fertile layer in a greenhouse on saline-alkali land using topsoil resources. The method comprises three parts: an isolation section, a drainage section, and an irrigation section. The isolation section uses corrugated isolation plates to separate the topsoil layer from the original soil layer, preventing deep salt from rising. The drainage section collects excess water using corrugated isolation plates and C-shaped drainage pipes, preventing water waste. The irrigation section is equipped with a mixing tank and solenoid valves to regulate the water volume in the collection pool for irrigation, or mixes the water with external water for regulation before irrigation. This method achieves efficient utilization of topsoil resources, effectively prevents topsoil desalination, solves the problems faced in saline-alkali land management, and realizes the recycling and conservation of water resources. Overall, this method scientifically protects topsoil resources while also improving the ecological environment of saline-alkali land.

The invention relates to the field of land measurement, in particular to a measurement device for land management. The machine comprises an extension rod, a machine head arranged at the top of the extension rod, and a handbook arranged on the extension rod, the mounting mechanism is arranged on the extension rod, a lifting ring is arranged on the mounting mechanism in a sliding mode in the vertical direction, a plurality of reinforcing supporting rods are arranged on the lifting ring in a penetrating mode, a limiting assembly for limiting movement of the reinforcing supporting rods is arranged on the lifting ring, the reinforcing supporting rods can freely move in the vertical direction before a point is measured, and after the point is measured and the vertical state is adjusted, the reinforcing supporting rods can freely move in the vertical direction. The freedom degree of the reinforcing supporting rod in the vertical direction is limited through the limiting assembly. According to the invention, through natural falling of the plurality of reinforcing support rods, the device can adapt to the uneven ground, after the reinforcing support rods are fixed through the clamping blocks, the extension rod can be vertically and stably erected on the ground, at the moment, the extension rod cannot be accidentally inclined by operating the handbook, and the measurement precision is ensured as much as possible.

The utility model relates to the technical field of ecological environment protection and restoration, in particular to an artificial afforestation water retention device for desertification land treatment. The utility model provides an artificial afforestation water retention device for desertification land treatment, which can keep the humidity of soil at the root of a tree, collect rainwater to carry out drip irrigation on the tree, improve the water retention effect on the tree and save the drip irrigation cost. An artificial afforestation water retention device for desertification land treatment comprises an outer frame, first fixing nails and the like, and a plurality of first fixing nails are connected to the outer frame in a clamped mode. The moisture preservation film covers the surface of soil at the root of a tree, rainwater is collected through the water storage bag, the water droppers on the capillary tubes slowly drop water into the root of the tree, the humidity of the soil at the root of the tree can be kept, rainwater can be collected to conduct drip irrigation on the tree, the water preservation effect on the tree is improved, and the water conservation effect of the tree is improved. And the drip irrigation cost is saved.

The invention discloses a soil clayey layer thickness digital mapping method based on Boruta feature screening, and relates to the technical field of geographic information, and the technical key points are as follows: a reliable soil clayey layer thickness prediction model is established by using sparse and limited field profile data, 81 environment covariables are incorporated, and the thickness of the soil clayey layer is predicted. According to the method, Pearson correlation analysis and a Boruta algorithm are adopted to carry out dual feature screening to identify variables which play a leading role in a drawing process and take the variables as modeling input, then a QRF model is used to carry out spatial modeling and 10-fold cross validation, and specific predicted value condition distribution of the QRF model is utilized to effectively evaluate the uncertainty of a prediction result. According to the method, the requirement for the number of observation points for the thickness of the soil clayey layer is reduced, optimization of environment covariants and relatively reliable space prediction mapping can be achieved under the condition of limited samples, and the method has important practical significance on subduction of subsequent soil obstacle factors and improvement of land management policies.

The application relates to the field of land management, in particular to a land element optimized allocation decision system and method based on artificial intelligence, which comprises a land remote sensing module, a region segmentation module, a development prediction module, a virtual merging module and an allocation decision module; the land remote sensing module is used for rasterizing land and inputting land element information; the region segmentation module is used for generating development regions and calculating shape coefficients; the development prediction module is used for calculating the output efficiency of land grids; the virtual merging module is used for merging adjacent development regions; and the allocation decision module is used for planning the development type of conflict grids; the application can reduce the waste of land resources, avoid the low-efficiency utilization caused by land dispersion, improve the land utilization efficiency, reduce the land development and management cost, ensure the scientificity and accuracy of land allocation, and realize the efficient utilization of land resources and the coordinated development of ecological environment.

The invention discloses a trisection type mechanical device for laying a grass checkered sand barrier, belongs to the technical field of sand land treatment, and provides the following scheme for solving the problems that a machine easily rolls the sand barrier, the labor efficiency is low, and the terrain adaptability of the machine is poor in the current sand barrier laying process. The device is mainly composed of a driving vehicle body, a trisection track conveying wheel, a trisection mastoid pressure sand barrier gear and an adjusting assembly. The vehicle body is driven to advance by virtue of the four trisection type crawler belt conveying wheels, the trisection type crawler belt conveying wheels comprise three crawler belt conveying wheels, and a gap between every two adjacent crawler belt conveying wheels can avoid a paved strip-shaped sand barrier, so that the sand barrier is prevented from being damaged by rolling; a trisection type mastoid pressing sand barrier gear at the tail end of the vehicle body is coaxially linked with an adjacent trisection type crawler belt conveying wheel, and mastoid teeth on the outer wall of the trisection type mastoid pressing sand barrier gear can press a tiled sand barrier into soil to form a vertical sand barrier, and the vertical sand barrier is matched with a strip-shaped sand barrier to form a standard straw grid. The device can effectively prevent the sand barrier from being rolled, is good in walking stability, reduces human input, and is suitable for large-scale grass checkered sand barrier laying.

The utility model relates to the field of sand control, in particular to desert water-retaining agent applying equipment which comprises a vehicle body, a spray head, a stirring tank, a water tank, a liquid pump and a hub, the upper end of the vehicle body is fixedly connected with the stirring tank, the water tank and a communicating box, a second connecting pipe is fixedly connected in an opening in the front end of the stirring tank, and a second valve is fixedly connected to the outer wall of the second connecting pipe. The stirring tank is in pipeline connection with the communicating box through a second connecting pipe, a first connecting pipe is fixedly connected into an opening in the outer wall of the water tank, a first valve is fixedly connected to the outer wall of the first connecting pipe, the water tank is in pipeline connection with the communicating box through the first connecting pipe, and a liquid pump is fixedly connected to the upper end of the communicating box; the ground contact area of the hub can be increased by pulling out the additionally arranged supporting block, the situation that the hub sinks into sand and is difficult to move is prevented, the stirring tank and the water tank can be communicated through the communicating box, after the water-retaining agent is sprayed, the residual water-retaining agent in the pipeline and the spray head can be cleaned, and the situation that the connecting pipe and the spray head are blocked due to adhesion of the water-retaining agent is avoided.

The invention discloses a soil clayey layer thickness digital mapping method based on a quantile regression forest model, and relates to the technical field of geographic information, and the technical key points are as follows: a reliable soil clayey layer thickness prediction model is established by using sparse and limited field profile data, and 81 environmental covariables are introduced, so that the thickness of the soil clayey layer is predicted. Performing dual feature screening by combining Pearson correlation analysis and a Boruta algorithm, and identifying variables playing a leading role in drawing as modeling input; space modeling and 10-fold cross validation are completed through a QRF model, and meanwhile the uncertainty of a prediction result is effectively evaluated by means of unique prediction value condition distribution of the QRF model. According to the method, the dependence on the number of observation points for the thickness of the soil clayey layer is reduced, the optimal selection of the environment covariable and the relatively reliable space prediction mapping are realized under the condition of limited samples, and the method has important practical significance on the reduction of subsequent soil obstacle factors and the improvement of land management policies.