43 results about "Loess plateau" patented technology

The invention belongs to the technical field of mine goaf filling materials, and particularly discloses flow-state solidified loess for coal mine filling and a preparation method and application of the flow-state solidified loess. According to the method, rich loess resources in the loess plateau area are used for preparing the flow-state solidified loess for coal mine filling, the coal mine recovery rate can be increased, the filling material cost is reduced, the problem that stones in the loess plateau area are insufficient is solved, the toughness and dry shrinkage resistance of the solidified flow-state solidified loess can be improved, and the problem that the loess is soft and swelled when meeting water is effectively solved. The curing agent for the fluid-state cured loess is developed according to the characteristics of loess of loess plateau and the characteristics of early strength, fluidity, pumpability, crack resistance and the like required by filling of the fluid-state cured loess, the alkali excitation mechanism, the pozzolanic effect, the secondary hydration reaction and other mechanisms are utilized, and proper functional components such as early strength, water retention and crack resistance are compounded, so that the curing agent for the fluid-state cured loess is prepared. The curing agent can effectively solve the common problems of air shrinkage, easy cracking, low strength and the like when a commercially available curing agent is used for preparing flow-state cured loess.

The invention relates to a rock migration monitoring point extraction method under loess plateau terrain, and belongs to the technical field of unmanned aerial vehicle measurement. The method for extracting the rock migration monitoring points under the loess plateau terrain comprises the following steps that a first target is arranged in a measurement area, and the first target and the rock migration monitoring points are correspondingly arranged; obtaining point cloud data of a plurality of first targets by utilizing mutual cooperation of a laser radar system and the first targets so as to form an original data set C1; performing primary processing on the original data set C1 to form an intermediate data set C2; fitting the point cloud data of the intermediate data set C2 by adopting a least square method to obtain a space plane M; calculating the distance from each point cloud data in the intermediate data set C2 to the space plane M, removing the point cloud data of which the distance from the point cloud data to the space plane M exceeds an error range from the intermediate data set C2, and forming a final data set C21 by the residual point cloud data in the intermediate data set C2; performing clustering analysis on the final data set C21 to obtain edge points of the final data set C21, and fitting the edge points to obtain a space sphere S with the maximum diameter; and acquiring the center of the space sphere, namely the center of the first target, according to the space plane M and the space sphere S.

The present application relates to geological exploration technical field, disclose a kind of thick loess plateau area coalfield 3D seismic exploration method, comprising the following steps: S101, artificial seismic source shooting record and superficial Rayleigh wave detector data are collected;S102, grid division is carried out to target area, and set to be inverted parameter;S103, vertical ray path time estimation, multilayer medium dispersion forward and poststack energy estimation are carried out;S104, according to first wave arrival time observation value, Rayleigh wave observation dispersion curve, theoretical ray path time, phase velocity and poststack energy generates multi-target error function;S105, target area is divided into three subdomains, differential evolution iteration is carried out, until local convergence;S106, establish a plurality of parallel annealing chain, set chain temperature and gradually decrease by chain, optimize to be inverted parameter, output optimal to be inverted parameter;S107, the static correction time difference and absorption compensation coefficient of each acquisition point are calculated.The present application improves coal seam structure imaging precision and exploration data reliability under complex surface conditions.

The invention relates to the technical field of water conservancy and hydropower and geotechnical engineering, and particularly discloses a silt solidification silt dam structure based on composite reinforcement and a damming method.The silt dam structure comprises a silt dam body formed by artificial aggregate layered filling formed by solidified silt crushing and screening; the geomembrane, the geogrid, the geobag, the ecological bag and the inverted filter drainage layer are arranged in a composite mode. The damming method comprises the steps that reservoir dredged sludge and an industrial solid waste curing agent are mixed, cured, crushed and screened into artificial aggregate; artificial aggregates are filled in a layered mode, geogrids are laid synchronously, the geogrids are used for reversely wrapping and fixing the soil bags of the downstream slope, and meanwhile ecological bags are laid; and finally, geomembranes are laid to complete seepage prevention and slope protection. According to the dam body, efficient resource utilization of desilting silt is achieved, the stability, seepage-proofing performance and ecological adaptability of the dam body are remarkably improved through the composite reinforcement and ecological protection technology, and the dam body is particularly suitable for loess plateau areas.

The application discloses a method for extracting and calculating gully area of the loess plateau, comprising the following steps: obtaining a digital elevation model of a sample area; determining a first gully area and a second gully area of the sample area according to the digital elevation model; determining a reference ratio according to the first gully area and the second gully area; obtaining a first gully area of a general survey area and a research area; determining a second gully area of the general survey area according to the reference ratio and the first gully area of the general survey area; and determining a second gully area of the research area according to the second gully area of the general survey area and the research area. The method can accurately extract the gully area of the loess plateau in a large range of research area, without a large amount of manual labor, and provides accurate and reliable data support for the research of the loess plateau.

The invention provides a loess plateau hilly and gully region small watershed ecological function zoning treatment method and device, and the method comprises the steps: calculating an ecological system health index of a target region based on an ecological system health index model; according to the ecosystem health index of the target area and the human footprint index of the target area, standard scores of the ecosystem health index and the human footprint index are calculated respectively; according to the standardized ecological system health index of the target region and the standardized human footprint index of the target region, determining the coupling coordination degree of the two; introducing the standard score of the ecological system health index and the standard score of the human footprint index into a four-quadrant model, and determining four-quadrant partitions of the target region; and based on the coupling coordination degree and the four-quadrant partition, determining the ecological characteristic regions to which the target regions belong, so as to carry out partition treatment. According to the method, the sustainability of the regional landscape can be scientifically improved, and benign interaction between people and a natural system is promoted.

The invention provides a well control chromatography static correction method and system for a loess highland and a medium, and belongs to the field of oil and gas geophysical exploration. The method comprises the following steps: step 100, inputting seismic data; step 200, performing tomographic static correction processing on the seismic data to obtain a tomographic static correction value; step 300, acquiring a well-to-seismic error value of the whole area; step 400, applying the well-to-seismic error value of the whole area to the chromatography static correction value to obtain a new chromatography static correction value; step 500, performing inversion according to the new tomography static correction value to obtain a new near-surface velocity model; and step 600, adopting the new near-surface velocity model to calculate and obtain a new static correction value. According to the method, the seismic condition, the current collection situation and the chromatography inversion characteristics of the loess highland are comprehensively considered, the stratified data of the well are utilized to calibrate, constrain and correct the static correction value error caused after chromatography static correction, finally, the well seismic error is reduced, and reasonable seismic structure imaging is ensured.

This invention discloses a method, apparatus, equipment, and storage medium for near-surface modeling in the Loess Plateau region, belonging to the field of geophysical exploration technology. The method includes calculating the shallow surface velocity field, calculating the weathered layer velocity obtained from tomographic inversion, calculating the weighting coefficients for correcting the weathered layer velocity, smoothing, calculating the weathered layer velocity, calculating the weathered layer thickness, and calculating the elevation of the high-velocity top interface, smoothing again, and obtaining the final constructed near-surface model. This method does not rely on excessive ultra-deep micro-logging, and can obtain a high-precision near-surface model while reducing exploration investment and saving costs, providing high-quality basic data for subsequent static correction and pre-stack depth migration processing.

This invention provides a method and apparatus for evaluating the suitability of dammed land for supplementary cultivated land in the Loess Plateau. The method includes: constructing an evaluation index system for the suitability of dammed land for supplementary cultivated land; collecting multi-source data related to the evaluation index system to obtain various evaluation indicators, and standardizing the data for each indicator; the multi-source data includes a geographic information spatial dataset within the target area; calculating the weight coefficients of the evaluation indicators using a combined weighting method that integrates CRITIC and entropy weights; calculating the compromise ranking index for each dammed land to be evaluated within the target area using a compromise ranking method based on the standardized values ​​and weight coefficients of each evaluation indicator; and ranking all dammed lands to be evaluated within the target area in ascending order according to the compromise ranking index, with the ranking result serving as the order for determining the implementation of dammed land inclusion for supplementary cultivated land balance. This invention enables a comprehensive and systematic assessment of the suitability of dammed land for supplementary cultivated land.

The invention discloses a loess plateau power grid facility coupling meteorological disaster risk dynamic assessment method and system. The method comprises the steps of obtaining static parameters, gridding meteorological forecast data and geographical geological data of primary equipment of a power grid in a target area; based on the static parameters, the gridded weather forecast data and the geographic and geological data, combining a pre-constructed risk assessment index model to obtain various risk indexes of the target equipment in the prediction time period; and determining the comprehensive risk level of the equipment by adopting a weighted fusion or most dangerous principle based on each risk index, and generating a risk distribution diagram and early warning information. The adaptive power grid equipment risk assessment method is constructed according to the meteorological geology characteristics of the loess plateau region, the problem of water and soil disability of a general model is solved, main meteorological disasters are comprehensively covered through five indexes, and the assessment result is more comprehensive and accurate; on the basis of weather forecast data, risk rolling assessment of several hours to several days in the future can be realized, passive response is changed into active defense, and the operation and maintenance efficiency is improved.

The invention relates to the technical field of water and soil loss monitoring and prevention, in particular to a small watershed gravitational erosion simulation method based on multi-technology fusion, which comprises the following steps: determining a small watershed range, collecting and preprocessing multi-source data to construct a digital elevation model, extracting contour lines by utilizing ArcScene, and importing the contour lines into Rhino software to construct a three-dimensional terrain entity model; optimizing a grid by using a built-in Riddle plug-in and adopting a self-adaptive grid division algorithm, importing the grid into FLAC3D software to set parameters, and carrying out gravity erosion simulation; and comparing and analyzing with an ArcGIS topographic map to divide erosion risk grades. According to the method, the terrain modeling precision and simulation efficiency are improved through multi-technology fusion, it is ensured that risk assessment better fits actual geological conditions, and the method is especially suitable for small watershed gravity erosion simulation and prevention work of complex terrain areas such as loess plateau.

The invention discloses a pavement structure suitable for a loess highland and a construction method, and belongs to the technical field of water and soil conservation engineering. The road surface comprises a road surface main body which is integrally paved on the loess tableland surface, and the width section of the road surface main body forms a continuous concave curved surface with low middle and high two sides; the roadbed supporting system is arranged below the pavement main body and sequentially comprises a loess compaction layer, a cement stabilizing layer and an impermeable layer from top to bottom; the drainage flow guide system comprises a built-in drainage groove formed in the lowest point of the middle of the road surface body, a lateral flow guide opening formed in one side of the road surface body and communicated with the built-in drainage groove and a connecting flow guide channel connected with the lateral flow guide opening, and one end of the lateral flow guide opening is connected with a waterlogging pool. And a roadbed supporting system, a drainage flow guide system and a water storage utilization system are integrated, so that the problems of tableland surface scouring, gully development and cultivated land occupation caused by unsmooth drainage of loess tablelands such as the Dong-Zhiyi tablelands are effectively solved.

The loess plateau slope water and soil conservation device and method belongs to the technical field of water and soil conservation and intelligent control, and comprises a pile foundation type executing mechanism, the pile foundation type executing mechanism comprises a spiral ground pile fixed in the slope soil body, a rotary base installed on the spiral ground pile to realize horizontal rotation, a pitching swing arm hinged on the rotary base to realize pitching movement, and a spraying guide pipe fixed on the pitching swing arm; an integrated sensing probe, the integrated sensing probe comprises a probe rod body, a plurality of layers of water content sensors arranged in layers along the length direction of the probe rod body, and a micro rain gauge installed at the top end of the probe rod body; and a central controller, the central controller is in communication connection with the integrated sensing probe and the pile foundation type executing mechanism respectively, is used for receiving sensing data and sending control instructions, and the model simulation precision of the real physical process is improved.

This application discloses a method, system, and electronic equipment for processing seismic data in the Loess Plateau region. The method employs Fresnel tomography static correction for data inversion to obtain a static correction value. This static correction value is then applied to the seismic data volume to obtain a first seismic data volume after static correction. The first seismic data volume is then processed through surface wave denoising, linear dip filtering, and frequency division denoising to obtain a second seismic data volume after denoising. The second seismic data volume is then subjected to deconvolution operations on pre-stack shot gathers, common receiver gathers, and post-stack profiles to obtain the final seismic data. The method provided in this application can significantly improve the resolution and signal-to-noise ratio of low signal-to-noise ratio seismic data in the Loess Plateau region, while accurately reflecting the characteristics of underground structures and greatly improving the accuracy of profile imaging. This lays a solid foundation for subsequent detailed stratigraphic interpretation and the determination of fault relationships and levels.

The invention discloses a method suitable for water storage, soil moisture conservation, fertilization and carbon sequestration of a dry farmland in a semi-arid region, and belongs to the technical field of agricultural ecological engineering. According to the method, efficient interception of water resources in the dry farmland in the semi-arid region, improvement of soil fertility and enhancement of carbon sequestration capacity are achieved through the synergistic effect of water storage and soil moisture conservation project construction (water storage tank + arc retaining wall), biological fertilization system implementation (three-layer plant community + microbial inoculum-slow release fertilizer) and carbon sequestration regulation and control technology (green returning to field + no-tillage). Specifically, the runoff retaining rate is increased by 40% or above, and the soil water content is increased by 25%; the soil organic matter content is increased by 0.3% annually, and the microbial activity is improved by 30%; the soil carbon reserve is increased by 15% or above in three years, and the crop yield is increased by 15%-20% per year. The method overcomes the defect of single function in the prior art, is suitable for loess plateau, Inner Mongolia and other semi-arid region dry farmland, has both ecological benefits and economic benefits, and has wide application prospects.

The utility model relates to a farmland residual film recycling machine. The recycling machine comprises a machine frame, a universal coupling, a film lifting shovel, a film collecting shovel and a film collecting box, wherein the machine frame is provided with front wheels and rear wheels; the universal coupling is connected with an output shaft of a tractor; the rack comprises a linear cross beam, a linear rear beam and an L-shaped front beam; a left film lifting roller, a right film lifting roller, a film lifting shovel, a film collecting shovel, spike teeth, a rolling roller II and a rolling roller I are respectively arranged on the rack, and the rolling roller II and the rolling roller I are meshed with each other; an elastic steel bar II is mounted on the left film lifting roller; and an elastic steel bar I is mounted on the right film lifting roller. According to the utility model, the modes of shaft connection, chain wheel transmission and the like are adopted, so that the cost is low, the use and maintenance are convenient, the tasks of recycling, processing and reusing the residual films can be completed at one time, the agricultural production efficiency is greatly improved, and the machine is particularly suitable for operation in non-mechanized areas of mountains, hills and loess plateau.

The utility model discloses a rainwater collecting and irrigating device for a loess plateau. The rainwater collecting and irrigating device mainly solves the problems of water and soil loss, water scarcity and agricultural irrigation in specific areas. Comprising a rainwater collecting shed, a power supply system, a filtering unit, a water storage tank, a micro water pump and a water dropper, wherein the rainwater collecting shed is connected with the water storage tank through a central pipeline, the micro water pump is mounted in the water storage tank, and a water outlet of the micro water pump is connected with the dripper through a bent water pipe extending to the ground; large-range coverage is formed in the loess plateau area through a rainwater collection greenhouse, and water and soil are kept after the greenhouse is made of a net-shaped water-permeable material to weaken the impact force of rainstorm; the collected rainwater is filtered and then collected to the water storage system; and meanwhile, a power supply system is arranged outside the device, so that integration and automation of the whole device are realized. According to the regional characteristics of the loess plateau area, the utilization rate of natural water resources in the loess plateau area can be effectively increased.

The invention discloses an ecological orchard building method suitable for loess plateau apple high yield, and relates to the technical field of agricultural fruit tree cultivation, the method comprises the following steps: calculating a plot specific freeze injury risk index based on gridding historical meteorological data, and scientifically selecting an orchard site in combination with a relative altitude difference principle; contour line soil preparation, soil deep tillage, application of nano-iron-containing organic base fertilizer and sowing of fast-growing leguminous green manure are synchronously implemented on a selected garden site so as to rapidly improve the soil; dynamically matching and screening rootstock and variety combinations with adaptive stress resistance according to the freezing injury risk indexes; synchronously arranging an intelligent micro supplementary irrigation system consisting of a micro water collecting facility, a soil moisture content sensor network and a drip irrigation pipe network; and finally performing field planting and water management. According to the method, climate risk assessment, rapid soil cultivation, variety stress resistance matching and intelligent water and fertilizer management are systematically coupled and synchronously implemented, so that the climate toughness of the newly-built orchard can be effectively improved, soil ripening is accelerated, and the resource utilization efficiency is improved.

The application discloses a kind of near-surface stratum Q value modeling methods for micro-logging data in loess plateau region, which includes: step one: using improved micro-logging first arrival spectrum ratio method to obtain the near-surface micro-logging Q value of logging point;Step two: using Kriging method to carry out spatial interpolation on micro-logging Q value data, obtain low-frequency near-surface Q value model;Step three: using machine learning to predict the rest of the spatial position Q value through known logging Q value data, obtain high-frequency near-surface Q value model;Step four: scale fusion is carried out to low-frequency, high-frequency near-surface Q value model, and a fine near-surface Q value model is established;Step five: using fine near-surface Q value model to carry out absorption and attenuation compensation processing on seismic data.The application solves the problem that the extracted logging Q value is not accurate due to the poor coupling relationship of shotpoint and receiver, provides reliable key Q value data for solving the absorption and attenuation compensation problem in complex near-surface area, and can be used in industrial production of seismic exploration.

The application discloses a complex geological high and steep slope water drainage system and a construction method thereof. The system comprises a waterlogging pool arranged at the top of the slope, a stone retaining wall arranged in the middle of the slope, a high-pressure concrete layer and an upper anchor rod riveted in the upper slope, a drainage ditch and a lower anchor rod riveted in the lower slope, a water inlet of the drainage ditch connected with the waterlogging pool through a lower inspection well, a slope drainage pipe and an upper inspection well, and a water outlet of the drainage ditch connected with a water storage pool through a drainage ditch. The rainwater convergence and transportation efficiency are remarkably improved through the multi-node and multi-channel design. In terms of structural safety, the slope sliding and scouring damage are effectively prevented through the multiple anchoring, protection and anti-filtration drainage system. In terms of resource utilization, the drainage end is connected with the water storage facility, the rainwater can be used for agricultural irrigation, and the water resource utilization rate is improved. In terms of adaptability, the system can stably operate in the complex terrain such as the loess plateau, many gullies and steep slopes, and the safety and durability of the drainage system are remarkably improved.

The invention provides a loess tableland transition area amplitude-preserving energy compensation method, electronic equipment, a storage medium and a loess tableland transition area amplitude-preserving energy compensation device. The compensation method comprises the steps that a common reflection point domain or common imaging point domain gather is obtained through pre-stack migration; optimizing and superposing a common reflection point domain or common imaging point domain gather; obtaining the horizon of the energy reference strata series; amplitude attributes are extracted; obtaining loess thickness distribution information; performing correlation analysis on the amplitude attribute and the loess thickness; fitting an energy proportionality coefficient formula; and applying the energy coefficient. According to the method, a surface consistency calculation method is used, through establishment of a whole-region marker bed and calculation of a whole-region surface consistency amplitude factor through a macroscopic marker bed, the amplitude consistency of seismic data is greatly improved, the multiplicity of solutions of the seismic data is reduced, basic data are provided for later seismic attribute analysis based on fluvial facies sand bodies, and the method is suitable for being applied to seismic analysis of fluvial facies sand bodies. The multiplicity of data interpretation is reduced, and more reliable basic data are provided for lithology exploration.

The present application relates to the field of ecological environment monitoring and geographic information system (GIS) application technology, and specifically provides a loess plateau ecological region carbon sink accounting method based on terrain effect and mining stress. The method of the present application comprises obtaining a multi-source correction data set, wherein the types of the multi-source at least include remote sensing data, geographic data and ground data; determining a mining stress index based on the multi-source correction data set; determining a soil erosion carbon pool estimation value based on the multi-source correction data set; determining a net ecosystem productivity based on the multi-source correction data set, the mining stress index and the soil erosion carbon pool estimation value. The present application realizes the quantitative inhibition effect of mining activities on vegetation carbon fixation, thereby reducing the deviation of forest carbon sink accounting around the mining area, making the accounting result in the ecological fragile area more objective and conservative, improving the accuracy of carbon sink accounting, realizing regional correction of net ecosystem productivity, and improving the accuracy of loess plateau ecological region carbon sink accounting.

The invention discloses a deep learning method for identifying soil macropores based on an improved U-Net model, and aims to solve the problems that in loess plateau soil macropore identification, a traditional method is high in subjectivity, and an existing deep learning model is insufficient in segmentation precision. According to the method, three-dimensional volume data of a soil sample is obtained through CT scanning, a data set is constructed through image preprocessing, a Res-Attention-U-Net model is designed and trained, and automatic and accurate recognition of the soil macropores is achieved by combining segmentation post-processing and feature quantification. According to the Res-Attention-U-Net model, residual connection and an attention mechanism are fused, segmentation evaluation indexes all reach 94.5% or above, the Res-Attention-U-Net model can adapt to complex scenes such as loose soil and biological disturbance, a quantification result can be directly used for hydrological model parameterization, and data support is provided for ecological restoration and water resource management in semi-arid regions.

The application relates to the field of three-dimensional seismic exploration field data acquisition technology in loess plateau areas, in particular to a three-dimensional seismic exploration shooting well depth design method for a coal mining area in a loess plateau area. The method comprises the following steps: in a determined exploration area, shallow geological survey work is carried out to track a favorable shooting layer, gully outcrop area data and shallow drilling survey result data are obtained; a favorable layer position is tracked by adopting a geological comparison method, and a shallow stratum model is constructed; a conventional three-dimensional seismic single factor test is carried out, and the best shooting well depth of each point is selected; the most favorable layer position is comprehensively analyzed and determined; and the best well depth of all designed shooting points is calculated. The application realizes the rationality and accuracy of the advanced design of the observation system shooting well depth by carrying out investigation and well depth design around the ideal layer position in the area as the core target, and lays a foundation for improving the efficiency and quality of field data acquisition.

The invention relates to the technical field of environment assessment and big data analysis, in particular to a loess plateau human settlement environment assessment algorithm based on big data, and the method comprises the steps: calculating four core indexes: soil erosion intensity, facility accessibility, terrain safety and social economic activeness; performing landform automatic partitioning based on topographic features; and then partitioning is carried out, dynamic weights are calculated by adopting a Credit-entropy weight combination method, and finally the human settlement environment quality index is synthesized. The system provides a corresponding hardware implementation architecture. According to the method, the loess landform differentiation rule is converted into the dynamic weighting model, spatial self-adaption of an evaluation standard is realized, dominant restriction factors of human settlement environments in different regions can be accurately identified, and a scientific tool is provided for differential spatial planning.

The application discloses a kind of slope and small watershed surface biomass rapid measurement method and system thereof.The method is based on water and sediment dynamics and similarity theory, constructs the three-dimensional physical model covering rainfall, soil and vegetation characteristics, obtains model biomass by dynamic simulation test, deduces biomass scale λ BH Combining static geometric scale and vegetation bulk density scale Y M BH M M Actual biomass of prototype area is converted to get by conversion formula. Corresponding system includes modeling module, dynamic simulation device, data processing unit and verification module. The method has the characteristics of high measurement accuracy, strong non-destructive and wide applicability, and is suitable for biomass monitoring, ecological assessment and vegetation restoration process analysis in ecologically fragile areas such as the Loess Plateau.

This invention relates to the field of seismic exploration technology. Specifically, it relates to a broadband signal receiving method and detector for seismic exploration based on circuit balance. This invention utilizes a novel land-based detector capable of receiving broadband seismic signals. Its equivalent circuit design eliminates the need for series-connected equivalent filter capacitors or inductors and impedance matching, allowing direct connection to existing external node acquisition stations for seismic data acquisition. Field experiments in the Loess Plateau have yielded a broadband response within the 0–420 Hz range. Analysis of the Ricker wavelet from the field data shows superior sidelobe suppression compared to existing detectors. Furthermore, field consistency tests demonstrate good consistency for this type of detector. This design solves the problems of signal inconsistency, signal distortion, and impedance matching in existing piezoelectric detectors. Its most significant contribution is breaking through the current broadband technology bottleneck, representing the only equipment technology path currently available for broadband seismic exploration.

The present application belongs to the technical field of plant of Cistanche, and discloses a kind of planting method of four-winged Atriplex inoculating Cistanche in Shanbei Loess Plateau, comprising: 2-3 years old four-winged Atriplex host forest planting;Semi-mechanized hole drilling method is used to drill a row of inoculation holes at the host 30-40 cm between planting row spacing;After hole drilling is completed, carbendazim and methyldemeton are sprayed in the inoculation hole for disease and insect pest control, then ABT1 rooting powder is sprayed in the inoculation hole, and Cistanche seeds treated by germination are scattered into the prepared biological fertilizer compound, and a three-dimensional inclined slope inoculation bed is made;After backfilling soil, the inoculation pit is drip irrigated and subsequently maintained and managed for weeding, disease and insect pest control;Cistanche medicinal materials are collected by artificial and mechanical methods within 2-3 years of inoculation.The present application greatly improves the selection accuracy of host plants, the parasitic rate and yield of Cistanche, reduces production cost, and makes semi-mechanized planting of Cistanche possible in Shanbei Loess Plateau.

This invention discloses a method for measuring the slope ratio of silt-retaining dams on the Loess Plateau, specifically implemented according to the following steps: Step 1, planning the UAV flight mission and constructing a geometric measurement model of the dam slope ratio; Step 2, acquiring images according to predetermined photographic positions and angles, and selecting images that meet the orthophoto requirements of the model; Step 3, extracting the UAV imaging altitude information from the images that meet the imaging requirements, extracting the model parameter information of feature targets in the images, and performing calculations. This invention achieves high-precision and high-efficiency measurement by constructing a mathematical measurement model of the silt-retaining dam slope ratio; by obtaining the scale relationship of the captured images through orthophoto recognition of silt-retaining dam feature indicators, an accurate spatial relationship between the UAV and the silt-retaining dam is established; and by employing a dual screening process of on-site interactive acquisition and image imaging analysis, the compliance of the acquired images is ensured, information extraction is completed quickly, and the needs of efficient thematic interpretation are met.