591 results about "Soil compaction" patented technology

The invention provides a method and a system for detecting construction flatness and compactness, which are applied to the field of measurement data processing. The compaction degree in the construction process is detected in real time on the basis of the preset electromagnetic induction sensor of the road roller, the problem that construction parameters cannot be adjusted in time by relying on sampling inspection after construction is completed in a traditional method is solved, electromagnetic parameters (such as electrical conductivity, dielectric constant and magnetic conductivity) are collected and matched with the compaction state of the construction ground, and the construction quality is improved. According to the method, the soil compaction condition is evaluated in real time, when insufficient compaction is found, the additional rolling times are automatically calculated, and the operation parameters of the road roller are dynamically adjusted according to the compaction distribution thermodynamic diagram, so that the construction precision and efficiency are improved, the condition of excessive compaction or insufficient compaction can be avoided, rework and resource waste are reduced, and the construction efficiency is improved. And real-time data feedback and automatic adjustment functions are provided, and intelligent management of the construction process is realized, so that the construction quality and the resource utilization rate are greatly improved.

The invention relates to an underground engineering construction design technology, discloses a method for analyzing the influence of underground excavation under-crossing on an existing subway station, and improves the efficiency and precision of analyzing the influence of underground excavation under-crossing construction on the existing subway station. The method comprises the steps that by defining a structure and geometrical shapes and material attributes of a stratum, boundary conditions and external loads are set, grid division is carried out, and a finite element three-dimensional basic calculation model is constructed; according to theories of porous media and the like, a multi-physical field coupling model of a seepage-deformation-temperature full coupling effect is constructed; the rigidity of the underground excavation vertical pile foundation is calculated, and the rigidity of the underground excavation vertical pile foundation is corrected based on the influence factors of the soil squeezing effect and the negative friction resistance; subsurface excavation construction is subdivided into a plurality of stages, structural stress, deformation and stratum displacement are calculated through an incremental method, and the timeliness of a supporting structure and the influence of different excavation modes on stratum disturbance are analyzed; and obtaining a structural response through finite element iteration solution, and judging the influence of underground excavation under-crossing on the existing subway station.

The invention belongs to the technical field of agricultural irrigation, and particularly relates to a deep-buried drip irrigation tape laying device capable of preventing tape overturning, in the device, a tape winding drum is detachably connected to an unwinding mechanism, a drip irrigation tape is wound on the tape winding drum, the unwound drip irrigation tape is fed between a furrow opener and a tape pressing wheel along a guide mechanism, and along with advancing of a rack, the drip irrigation tape is wound around the tape winding drum. The drip irrigation belt is laid in a groove formed by the ditching mechanism, then soil is compacted through the soil pressing mechanism, laying is achieved, in the process, through the arrangement of the guide mechanism and the belt pressing wheel, the belt floating and belt turning phenomena in the unwinding and laying process can be effectively avoided, the height of the ditching device is adjustable, and the practicability is high. The ditching depth of the ditcher can be adjusted according to actual use requirements; according to the drip irrigation belt laying device, the phenomena of belt floating and belt turning in the drip irrigation belt laying process can be effectively avoided, and the drip irrigation belt laying depth is adjustable.

The invention belongs to the technical field of intelligent agriculture and soil mechanical modeling, and particularly relates to a farmland soil mechanical compaction stress distribution prediction model construction method, which comprises the following steps: S1, constructing a stress distribution measurement model, and arranging stress sensors; s2, obtaining a wheel load and a surface stress of a wheel soil contact surface based on a vertical stress collected by a stress sensor; s3, measuring the stress transfer coefficient of each layer of soil by using a uniaxial compression test; s4, calculating the concentration coefficient of each layer of soil; and S5, obtaining a soil stress distribution model of the ith layer. The model can be used as a bottom-layer mechanical engine of a soil compaction evaluation system, supports data input of an upper-layer risk prediction module, and provides favorable technical support for subsequent prediction of soil compaction, so that effective measures can be taken to avoid soil compaction in advance.

The invention provides a calcium humic acid modified biochar composite material as well as a preparation method and application thereof. The preparation method specifically comprises the following steps: preparing calcium modified biochar powder from biochar powder and a calcium source; mixing humic acid with the calcium modified charcoal powder, filtering and drying to obtain a calcium humic acid modified charcoal composite material; wherein the mass ratio of the humic acid to the calcium modified charcoal powder is 1: (2-20). When the calcium humic acid modified biochar composite material is used as a soil remediation agent for soil remediation, the pH value, the organic matter content and the cation exchange capacity of soil can be improved, the soil hardening degree is relieved, heavy metal lead and cadmium and ions thereof can be immobilized in the modes of ion exchange, electrostatic adsorption, surface complexing, deposition and the like, and the soil remediation efficiency is improved. The soil heavy metal content is further reduced.

The invention discloses a straw returning machine control system and method for soil mechanical compaction and reduction, and belongs to the technical field of agricultural machinery control. The problem that in the operation process of an existing straw returning machine, control parameters cannot be adaptively modified according to the current soil state, and the soil mechanical compaction state is serious is solved. The system adopts a soil comprehensive pressure resistance calculation module to calculate the soil comprehensive pressure resistance; the soil comprehensive compaction degree calculation module calculates the soil comprehensive compaction degree; a first adjustment parameter determination module is further adopted to determine one first adjustment parameter by taking the cutter angular speed, the cutter shaft torque and the operation depth as to-be-adjusted operation parameters; and calculating the adjustment amount of the first adjustment parameter by adopting a first adjustment parameter updating module, and determining the current adjustment value of the first adjustment parameter according to the current value and the current adjustment value of the first adjustment parameter. According to the invention, the pre-judgment and control of the soil compaction effect are realized to the greatest extent.

The invention provides a microbial agent type bio-organic fertilizer capable of improving continuous cropping tobacco planting soil hardening and a preparation method of the microbial agent type bio-organic fertilizer, and belongs to the technical field of organic fertilizers. The microbial agent type bio-organic fertilizer capable of improving continuous cropping tobacco planting soil hardening comprises the following raw materials: an organic material, a microbial agent, an inorganic nutritional ingredient, vinasse and an additive, wherein the organic material is composed of livestock and poultry manure, crop straw, tobacco waste and a fermentation inoculant; the additive is prepared from humic acid, seaweed extract and amino acid. The organic fertilizer contains rich organic materials and humic acid, the content of organic matters in soil can be increased, the granular structure of the soil can be improved, the growth of soil-borne pathogenic bacteria can be inhibited by the added multiple beneficial microorganisms, the micro-ecological environment of the soil can be improved by the photosynthetic bacteria, and the incidence rate of diseases such as tobacco black shank and bacterial wilt can be reduced.

System and methods for modeling, planning, and monitoring soil compaction. Laboratory test and historical data establish an historical baseline. A predictive baseline is computed from the historical baseline and a predictive site model. During the soil compaction of a calibration area, a predictive compaction model is computed from providing compaction scores obtained from standard tests, loose measurement maps and a compacted vibration map. During the soil compaction vibration data is used in conjunction with the predictive compaction to compute a compaction value. Upon detecting that the compaction value is within the target compaction threshold, an operator is notified.

The invention relates to the technical field of agricultural machinery, in particular to a ditching machine for soybean planting. The device comprises a walking tractor head, a furrow plough, a furrow cutter and a dumping plough, soil compaction mechanisms are rotationally installed on the two sides of the end, away from the furrow cutter, of the dumping plough, and each soil compaction mechanism comprises a compaction assembly and a ventilation assembly; according to the device, through the synergistic effect of the compaction assembly and the ventilation assembly, balance of soil compaction and ventilation is achieved, the compaction assembly can effectively compact the ditch wall, prevent soil from loosening and slipping and ensure the stability of the gully, and the ventilation assembly is provided with a plurality of ventilation holes in the compaction process through the design of ventilation rods and barbs, so that the soil can be effectively compacted, and the ventilation effect is improved. The soil is compacted and ventilated, so that the air permeability of the soil is ensured, the respiration and healthy growth of soybean root systems are facilitated, and the compaction and air permeability coexisting collaborative design not only improves the environmental quality of the soil, but also provides good conditions for the growth of soybeans.

The invention belongs to the technical field of seed cultivation equipment, and discloses seed and seedling cultivation equipment and a cultivation method.The seed and seedling cultivation equipment comprises a frame body, a cultivation carrying frame is slidably connected into the frame body in a sleeved mode, the top of the cultivation carrying frame is sleeved with a hole tray frame, and an ultrasonic nebulizer is fixedly arranged in the cultivation carrying frame. According to the device, water replenishing treatment is conducted on seed cultivation, liquid beads are atomized at the bottom and permeate into soil, the problems that the water amount control difficulty is large during top irrigation and soil hardening is caused are solved, water supply consumption is reduced, soil hardening is avoided, the good refined water replenishing effect is achieved, and meanwhile through cooperation of a second slit and a condensation column, the water replenishing efficiency is improved. According to the device, redundant atomized liquid beads are dispersed to the upper portion of the hole tray frame, the upper and lower face water supplementing effect is achieved aiming at atomization contact of the top of soil, the condensation column makes contact with the atomized liquid beads, condensation and convergence are achieved, the slow drip irrigation effect is simulated, the multiple irrigation water supplementing effect is achieved, and the comprehensive use effect is good.

The invention discloses a corn planter in-field path planning method for soil mechanical compaction and reduction, and relates to the technical field of agricultural machinery path planning. The invention aims to solve the problems that the existing corn planter path planning method is low in seeding efficiency and the growth of corn crops is influenced by multiple times of soil compaction. The method comprises the following steps: acquiring in-field furrow information and boundary point information of irregular field parcels, clustering the irregular field parcels, and dividing the irregular field parcels into a plurality of regular field parcels; setting a seed and fertilizer supplementing point position in each regular field; and planning the global seeding path based on the position of the seed fertilizer supplement point to obtain a final seeding path. The method is used for planning the corn seeding path.

The invention relates to the technical field of geological environment monitoring, in particular to a stability monitoring method for ecological slope protection of an expressway. The method comprises the following steps: acquiring remote sensing data of an expressway monitoring area; performing water and soil loss area detection according to the remote sensing data of the highway monitoring area to obtain water and soil loss area data; performing erosion intensity analysis according to the water and soil loss area data to obtain erosion intensity data; extracting vegetation coverage data of the water and soil loss area data; performing drainage clogging analysis according to the vegetation coverage data and the erosion intensity data to obtain drainage clogging data; performing soil stability analysis based on the drainage clogging data to obtain soil stability data; and detecting the soil compaction degree according to the soil stability data. Based on the geological environment monitoring technology, the detection and prediction precision of water and soil loss, soil stability and ecological slope protection stability of the highway monitoring area is improved, and the landslide prevention and ecological protection efficiency is improved.

The invention provides modified polysiloxane and also provides a preparation method of the modified polysiloxane, and the preparation method comprises the following steps: mixing low-hydrogen-content silicone oil with allyl alcohol polyether and allyl glycidyl ether, heating, adding a catalyst, and carrying out an addition reaction to obtain the modified polysiloxane. The invention also provides an application of the modified polysiloxane as a soil loosening agent, and the modified polysiloxane is used for reducing the soil bulk density and / or increasing the soil porosity, and is also used for improving the water absorption and / or water retention of the soil. By applying the modified polysiloxane soil loosening agent disclosed by the invention, the soil bulk density is effectively reduced, the soil compactness is reduced, and the soil porosity is improved, so that the soil hardening is remarkably improved, the crop growth is promoted, and the modified polysiloxane soil loosening agent is green and safe and has important economic value and environmental significance.

The invention discloses a PLC (programmable logic controller) control type film-laying and pipe-laying straight-insertion precision seeding all-in-one machine, and belongs to the technical field of seeders, the PLC control type film-laying and pipe-laying straight-insertion precision seeding all-in-one machine comprises a machine body and a seed storage unit assembled on the machine body, one side of the machine body is connected with a film-laying unit and a pipe-laying unit through an extension frame, a straight-insertion assembly is assembled on the extension frame, and the straight-insertion assembly comprises a synchronous frame inserted on the extension frame; a first electric hydraulic push rod of which one end is connected with the synchronous frame is mounted in the middle of the extension frame; through the arrangement of the film laying unit, the pipe laying unit and the direct insertion unit, the functions of film laying, pipe laying, sowing and film breaking are integrated, full-process mechanical operation is achieved, traditional manual operation is replaced, the labor cost and time investment are greatly reduced, and the machine is particularly suitable for large-scale planting scenes; the air permeability and moisture retention are balanced, oxygen deficit caused by soil hardening is prevented, the situation that seedlings are scalded due to the fact that the mulching film is not broken in high-temperature weather can be avoided as much as possible, and the crop survival rate is increased.

A soil compaction device for compacting soil is specified, comprising a vibration exciter device (14) for generating a vibration for soil compaction, in which at least two parameters that influence the vibration generated by the vibration exciter device (14) are variable; a soil compaction measuring device (18) for detecting a compaction state of the soil; and a control device (1, 17) for adjusting at least one of the at least two parameters; wherein the control device (1, 17) is designed to automatically adjust at least one of the at least two variable parameters depending on the detected compaction state and a predetermined set of rules.

The utility model relates to an electrically-driven self-excited vibration subsoiling resistance reduction device, which is used for plowing and soil preparation subsoiling operation, and comprises a subsoiling component, a pressing and crushing component, a rack and a self-excited vibration component, the rack is fixedly arranged on a traction beam, the electrically-driven self-excited vibration component is assembled above the rack, the subsoiling component is assembled below the rack, and the self-excited vibration component is assembled below the rack. The pressing and soil crushing component is assembled in the middle of the deep scarification component below the rack; an electric excitation source deep scarification device is designed, the adaptive capacity of an excitation source to different soil working environments is improved, the problems of large traction resistance, high energy consumption and the like in the deep scarification operation process are solved, forced deep scarification is changed into resistance reduction vibration deep scarification, single deep scarification is changed into deep scarification and crushed soil pressing, and the soil penetrating angle of a deep scarification shovel can be adjusted according to soil conditions. The subsoiler can well adapt to subsoiling operation, can press and level soil after subsoiling to a certain degree, further cut and smash the soil, enables the soil after operation to be looser, stores water, preserves soil moisture, avoids environmental hazards such as flying dust and the like, and has the advantages of being simple in structure, convenient to install, flexible in movement, simple and efficient in transmission, easy to popularize and the like.

The present invention relates to the technical field of soil column water seepage models. Disclosed are a multifunctional soil column model device and a using method. According to the multifunctional soil column model device and the using method, by extending an electric push rod, a pressing plate moves downward to approach the soil; as one end of each rope is connected to a fixing plate, rope reels are enabled to release the corresponding ropes and rotate, a rotating shaft drives cams to rotate, and the cams and pulleys compress each other to move and drive, in cooperation with first springs, a fixing sheet to shake in a reciprocating mode, so that the fixing sheet drives, by means of a second spring, a threaded disc and the pressing plate to vibrate in a reciprocating mode, the pressing plate advances downward in a vibrating mode, and the pressing plate makes contact with the soil and maintains vibration to perform compaction operation, thereby improving the soil compaction quality, better simulating subgrade soil, and enhancing experimental accuracy; moreover, by assembling multiple model barrels for use, experimental data at different heights can be simulated, and by means of assembly, the space occupied by model barrels can be reduced, thereby facilitating transportation.

The invention discloses a supersonic orchard gas explosion deep scarification fertilizer applicator which comprises a crawler-type movable chassis, a gas explosion generating device, an air pressure and fertilization adjusting device, a control device, a soil bulk density detection device, a sensor intelligent detection device and the like. The gas explosion generating device comprises an air compressor, a gas tank, a high-pressure gas pipe and an electromagnetic valve, gas generated by the air compressor is stored through the gas tank, and the electromagnetic valve controls release of the high-pressure gas. The air pressure and fertilization adjusting device comprises an electromagnetic valve, a soil bulk density detection device, a sensor intelligent detection device and a control platform, and the soil bulk density detection device is installed on the crawler-type movable chassis and used for detecting the thickness of a soil compaction layer and determining the deep scarification depth and the air explosion pressure; the sensor intelligent detection device comprises a moisture sensor, a temperature sensor, a nitrogen phosphorus and potassium sensor, a single chip microcomputer control module and a communication module, and the sensors are used for detecting the moisture, temperature and nitrogen phosphorus and potassium content of soil, so that the proper fertilization amount is determined.

The invention discloses a subgrade soil dry density hyperspectral nondestructive testing method based on a soil compactness coefficient. The method comprises the following steps: a1, uniformly distributing physical and chemical parameters of engineering foundation soil in a space; b2, a remote sensing product used for monitoring the water content of engineering foundation soil is obtained and generated through the four-rotor unmanned aerial vehicle; c3, building model parameters in combination with indoor experiments; d4, the engineering foundation is compacted, and the soil dry density of the engineering foundation is actually measured through a sand filling method and verified; e5, a remote sensing product used for monitoring the soil water content after engineering foundation compaction is obtained and generated through the four-rotor unmanned aerial vehicle; and f6, constructing a soil compactness coefficient image based on the hyperspectral image products generated in the step b2 and the step e5, inputting the image of the corresponding characteristic parameter into the model obtained in the step d4, and estimating the dry density of the roadbed construction soil. According to the method, rapid, lossless and real-time detection of the dry density of the roadbed soil can be realized through an unmanned aerial vehicle-hyperspectral technology, and the defects of a traditional soil dry density determination method are effectively overcome.

The invention discloses an intelligent agricultural greenhouse for modern agriculture, and the greenhouse comprises a greenhouse frame which is internally provided with an intelligent inspection mechanism. The mechanism is mainly composed of a pair of sliding rails, an electric sliding block capable of moving on the sliding rails, a first transverse plate connected with the electric sliding block and a loader installed at the lower end of the first transverse plate. And a visual detection mechanism and a targeted spraying mechanism are arranged on the loader. The visual detection mechanism is responsible for collecting image information of crops in the greenhouse, and the targeted spraying mechanism is used for executing precise pesticide application work. The device has the remarkable beneficial effects that precise positioning and local pesticide application can be achieved, and the problems of resource waste and environmental pollution caused by a traditional wide pesticide spraying method are fundamentally avoided. The system can effectively protect the natural control ability of beneficial organisms and ecological systems and reduce the risk of soil hardening and underground water pollution, thereby being beneficial to improving the soil productivity and environmental bearing capacity and finally ensuring the safety and quality of agricultural products.

The invention discloses novel efficient biological cultivation equipment for black land based on earthworm driven inoculation, and designs novel pure-electric-driven unmanned earthworm complex large-field throwing equipment in order to solve the problem that existing throwing machinery for earthworm complexes is lacked. According to the device, mixed liquid acts on materials at the bottom of the material box in a spraying mode, the overhead phenomenon formed in the material box due to adhesion of the materials is avoided, and it is guaranteed that the materials are continuously and fully filled into the discharging mechanism; according to the feeding device with the earthworm feeding hopper and the straw mixture feeding hopper as main components, accurate feeding is achieved under the condition that the reasonable sowing amount is controlled, and the feeding distance and the feeding amount can be controlled according to actual needs. According to the design, the requirement of intelligent agricultural machinery is met, quantitative and damage-free putting of the earthworm complex is met, and a feasible solution is provided for solving the problems of insufficient soil porosity and soil hardening.

The invention discloses a high-bearing-capacity formed spiral anchor foundation and a construction technology, and relates to the technical field of spiral anchor foundations, the high-bearing-capacity formed spiral anchor foundation comprises a hollow anchor rod, at least one spiral anchor disc and a plurality of grouting holes, the spiral anchor disc and the grouting holes are arranged on the lower section of the anchor rod, a pressing disc structure is coaxially arranged on the middle section of the anchor rod, and the diameter of the pressing disc structure is basically equal to that of the spiral anchor disc; and the pressure plate structure is used for compacting soil around the anchor rod in the process of screwing the anchor rod into the ground. In the process that the middle section of the anchor rod is screwed into the ground, the pressing disc structure compacts soil around the anchor rod disturbed by the spiral anchor disc, the uplift bearing capacity is improved, in the later stage, through the high-pressure grouting stage of the anchor rod, cement paste cannot uprush from the high-compactness soil in the spiral anchor disc and around the anchor rod, and the uplift bearing capacity is improved. The high-bearing forming spiral anchor foundation can only uprush to the ground from soil which is far away from the anchor rod and is relatively low in compactness, so that the cement paste is fully injected into the underground soil, the paste wrapping range is wide, the grouting effect is good, and the bearing capacity, especially the horizontal bearing capacity, of the high-bearing forming spiral anchor foundation is remarkably improved.

The invention belongs to the technical field of soil remediation, and particularly relates to a saline-alkali soil improvement method which comprises the following steps: soil preparation: irrigating after ploughing; compacting the soil: compacting the air-dried soil; planting of the gramineae plants and the leguminous plants: intercropping the gramineae plants and the leguminous plants after rotary tillage, wherein the distance between the adjacent gramineae plants and leguminous plants is 30-45cm. According to the method, a blocking layer for limiting downward movement of soil moisture and upward migration of underground moisture is formed in a soil compaction mode, salt moves along with repeated evaporation of moisture is established, before compaction, soil is turned over and irrigated, salt is promoted to permeate downwards, compaction is conducted after turning over and irrigating, on one hand, salt infiltration is further promoted, on the other hand, the salt content is reduced, and the soil quality is improved. After compaction, surface soil is subjected to rotary tillage to loosen, so that root systems of the corn and the soybeans laterally develop, and the surface soil is improved by utilizing ecological habits of different crops and a root system distribution difference principle.

The invention relates to the technical field of soil compaction degree testing, in particular to a soil compaction degree testing device and method for a garden tillage machine, and the method comprises the steps: measuring the height from each set position to the ground at each moment in the movement process of the garden tillage machine, and measuring the vibration frequency and vibration amplitude of each set position at each moment; measuring an inclination angle formed between the tail part of the garden farming machine and the horizontal plane at each moment in the movement process; determining the vibration difference degree of each set position at each moment; obtaining a height deviation coefficient of each set position at each moment; correcting the height of each set position at each moment by using the height deviation coefficient based on the vibration difference degree; and based on the corrected height of each set position at each moment, utilizing a trigonometric function relationship to obtain the settlement difference of the soil at each moment in the movement process of the garden farming machine, and testing the compaction degree of the soil. Therefore, the accuracy of the soil compactness test is improved.

The present invention discloses a gentle slope no-tillage reseeding machine, and relates to the technical field of seeding machines, the gentle slope no-tillage reseeding machine comprises a frame body, the top and the bottom of the frame body are respectively and fixedly provided with a stock bin and a furrow opener, the gentle slope no-tillage reseeding machine further comprises a cut-off mechanism, the cut-off mechanism comprises a ridge plate fixed at the tip of the furrow opener, and the outer side of the ridge plate is slidably connected with a mounting plate; a spring is arranged between the mounting plate and the ridge plate, the outer sides of the ridge plate and the mounting plate are fixedly connected with tool bits which are arranged at equal intervals, and the two groups of tool bits are continuously staggered, so that straws blocked in front and wound weeds in the forward moving process of the furrow opener can be cut off, the resistance of the furrow opener in the forward moving process is reduced, and the flowing of soil is prevented from being blocked; the compaction wheel is arranged on the furrow opener to form a furrow with a stable shape, and the compaction wheel can compact soil conveyed into the furrow opener by the conveying wheel at the bottom of the furrow during furrow opening, so that the uniform sowing depth of seeds is ensured, and the condition that the seeds are difficult to come out of the soil and even are rotten due to too deep positions is avoided.

The invention discloses a loess high fill compaction degree nondestructive detection method, relates to the technical field of civil engineering and geological detection, and is used for solving the problems that the detection precision is insufficient, the adaptability to loess characteristics is poor, and the requirement of loess compaction degree nondestructive evaluation cannot be met. An earth surface electromagnetic wave reflection signal and soil particle vibration frequency data are collected to analyze a compaction degree deviation index, when the deviation index is higher than a judgment threshold value, a spectrum analysis algorithm is adopted to calculate compaction degree spectrum characteristics of different depths and positions, and if the spectrum characteristics are consistent, soil particle distribution characteristics and humidity change frequencies are further collected; the compaction uniformity is comprehensively analyzed, the compaction non-uniformity rate is calculated when the uniformity is low, a proper detection algorithm is selected according to the compaction non-uniformity rate to judge whether the compaction non-uniformity problem exists or not, the calculation complexity is reduced, and the judgment accuracy is improved.

The invention relates to the field of data analysis, in particular to a farmland soil compaction diagnosis method based on multi-source sensor data, and the method comprises the steps: carrying out the gradient energy feature construction and phase alignment cross-correlation evaluation of soil resistance depth curve data, and obtaining a gradient energy phase locking factor; carrying out rheological consistency coupling evaluation on the morphological characteristics of the soil resistance depth curve and the soil volume moisture content to obtain a rheological morphological coupling factor; performing joint correction on the basic Euclidean distance to obtain an adaptive similarity distance and executing clustering iteration; spatial modeling and prescription mapping are carried out on a clustering result and sampling point position information, so that a soil compaction accurate diagnostic graph is obtained, and a differentiated subsoiling operation instruction is generated; the method solves the problem that the existing Euclidean distance easily causes the characteristic dislocation of the compaction layer and the deformation of the rheological strength under the condition of farmland micro-topography fluctuation and water content difference to cause the distortion of the clustering partition.

A soil processing machine, in particular a soil compactor, comprises a machine frame and a casing (26, 28) carried on the machine frame and / or at least partially providing it and bounding a unit receptacle space (24), wherein the casing (26, 28) has a cooling air inlet area (30) and a cooling air outlet area (32) for cooling air flowing through the unit receptacle space (24), wherein a plurality of units around which cooling air can flow through the unit receptacle space (24) from the cooling air inlet area (30) to the cooling air outlet area (32) are arranged in the unit receptacle space (24), wherein at least two of the units arranged in the unit receptacle space (24) have maximum permissible operating temperatures different from one another and at least one unit having higher maximum permissible operating temperature is arranged upstream in a cooling air flow direction from the cooling air inlet area (30) to the cooling air outlet area (32) with respect to at least one unit having lower maximum permissible operating temperature.

The invention discloses an organic-inorganic composite acid soil conditioner with synergism of nitrogen element synergism and soil expansion and application, and belongs to the technical field of soil conditioners. The modifier prepared by the invention is prepared from an acid neutralizer, a structure modifier, a capacity expansion synergist and a nitrogen synergist and is prepared from the following components in parts by weight: 18 to 22 parts of dolomite powder, 6 to 10 parts of lime powder, 20 to 24 parts of oyster shell powder, 8 to 12 parts of humic acid, 4 to 8 parts of sargassum, 1 to 3 parts of sodium alginate, 7 to 11 parts of charcoal, 5 to 9 parts of sepiolite powder, 3 to 7 parts of bentonite, 6 to 10 parts of poly gamma-calcium glutamate and 3 to 7 parts of chitosan. The soil conditioner can regulate and control the soil acidity, buffer the soil capacity, improve the soil structure and balance soil nutrients, solves the problems of high re-acidification rate, soil hardening and nutrient imbalance of a traditional lime conditioner, and is suitable for pHlt; and 6.5, repairing the acid soil.

The invention discloses a compaction degree measuring and calculating method based on multi-physics field joint inversion. The method comprises the following steps: acquiring multi-physics field observation data and rock-soil compaction characteristic parameters of a to-be-detected area; establishing a mapping relationship between the moisture content and the observation data and between the dry density and the observation data by using a pre-established forward model; executing joint inversion iteration, and updating the state variable based on the observation residual error; in the iteration process, a physical feasible region is constructed by utilizing rock-soil compaction characteristics, and the physical feasible region is embedded into the inversion process as a constraint condition to constrain the value ranges of the dry density and the water content; and in response to the condition that the joint inversion iteration process meets a preset convergence condition, outputting the dry density after inversion convergence and calculating the compaction degree. According to the method, the problems that a traditional inversion solution violates the soil engineering compaction rule and cannot adapt to compaction under variable work conditions are solved, and the physical authenticity and precision of compaction quality detection are improved.