624 results about "Soil surface" patented technology

The invention provides a slow-release ecological grass blanket for improving an eroded inferior land and a construction method of the slow-release ecological grass blanket. The ecological grass blanket comprises a bottom intercepting layer, a nutrient slow-release layer, a seed triggering layer and a surface fixing layer which are sequentially arranged on the soil surface of the eroded inferior land. The bottom interception layer at least comprises a water-soluble lower film arranged on the soil surface and a first composite substrate layer arranged on the water-soluble lower film; the nutrient slow-release layer at least comprises an organic fertilizer mixture particle layer arranged on the first composite substrate layer and a water-soluble upper film arranged on the organic fertilizer mixture particle layer; the seed triggering layer comprises a degradable fiber lower net arranged on the water-soluble upper film and a composite seed belt arranged on the degradable fiber lower net; the surface fixing layer comprises a second composite substrate layer arranged on the composite seed belt and a degradable fiber net arranged on the second composite substrate layer. The ecological grass blanket provided by the invention is high in seed survival rate, good in uniformity, low in cost and capable of realizing sustainable ecological restoration.

A soil carbon measurement device (100) can include a subsurface support (110) configured to be inserted at least partially under a soil surface. The subsurface support can include an interior volume (114) and a. gas-permeable barrier separating the interior volume (114) from soil under the soil surface. The device (100) can also include an ultraviolet light source (1.30) positioned to expose the soil under the soil surface to ultraviolet light, and a carbon dioxide sensor (150) configured to measure a concentration of carbon dioxide in the interior volume (114) of the subsurface support (110).

The present invention relates to the technical field of rotary tillage and seeding equipment, and discloses a rotary seeding and ditch-opening integrated machine, which includes a first frame. One end of the first frame is connected to a second frame. A height-lifting mechanism for adjusting the height of the second frame is provided between the first frame and the second frame. A pressing roller group is arranged at the bottom of the second frame. In the present invention, the first pressing roller and the second pressing roller perform pressing operations before and after the disc ditch opener opens the ditch respectively, so that the top surface of the ridge formed by the notch disc cooperating with the digging bucket disc for ridge ditch opening is leveled, and the side wall of the ridge ditch is leveled in cooperation with the pressing disc, avoiding the ridge from falling apart during the process of opening the planting ditch. The first pressing roller presses and cooperates with the soil distributing mechanism to level the soil surface. During the subsequent process of opening the planting ditch, the soil on both sides of the disc ditch opener is compacted, and while not compacting the soil density of the soil acting with the disc ditch opener, the soil excavated from the planting ditch is reduced, the space between the disc ditch openers is increased, and soil congestion is avoided.

The invention aims to provide a farmland pollution monitoring system, an underground leaching water quantity monitoring method and an underground leaching water quantity monitoring device, which can realize the real-time in-situ monitoring of the farmland nitrogen leaching water quantity under the condition that the soil moisture content is changed from an unsaturated flow state to a supersaturated flow state, comprising a soil moisture sensor, a soil pressure sensor, a rainfall sensor and a control box, the soil moisture sensors are arranged at different depths of soil; the soil pressure sensor is arranged on the surface layer of the soil; the rainfall sensor is arranged above the soil in an exposed manner; the soil moisture sensor, the soil pressure sensor and the rainfall sensor are electrically connected with the control box through sensor connecting lines and transmit data.

The invention relates to a system and a method for synergistically and accurately collecting required and consumed water of crops. A wireless transceiver is mounted at the top of the upper water supply pipe, a soil surface water content sensor and a soil deep water content sensor are mounted on the lower water supply pipe, and a buried irrigation pipe is communicated with the lower water supply pipe between the soil surface water content sensor and the soil deep water content sensor; a crop bottom-layer temperature and humidity sensor and a crop top-layer temperature and humidity sensor are mounted on the upper water supply pipe, and the upper water supply pipe between the crop bottom-layer temperature and humidity sensor and the crop top-layer temperature and humidity sensor is communicated with a stem and leaf irrigation pipe; the water demand is more accurately obtained, comprehensive control is implemented, and corresponding buried irrigation or spray irrigation is started according to different water demand values during irrigation operation, so that the purpose of optimal water saving is achieved.

The invention belongs to the technical field of soil humidity prediction methods, and particularly relates to a soil deep humidity prediction system and method based on near infrared spectrum and federated learning. The system comprises a near infrared spectrum acquisition device, an auxiliary information acquisition module, an edge end data preprocessing module, a federated learning client module, a cloud federated aggregation server and a man-machine interaction and equipment control module. The method comprises the following steps: establishing a surface humidity estimation model by collecting soil surface near-infrared reflectivity and environment auxiliary information; a deep humidity prediction model is constructed in combination with a heat conduction equation and machine learning, and the accuracy is improved by adopting weighted fusion. A federal learning framework is introduced, local training and cloud aggregation of each agricultural machine are realized, data privacy is protected, and the model generalization ability is improved. The system does not need to destroy the soil structure, has the advantages of non-contact, high efficiency, safety and expandability, and is suitable for intelligent prediction of large-range deep humidity in farmland and linkage control of agricultural operation.

The invention relates to the technical field of agricultural machinery, and discloses a full-automatic on-film vegetable pipe laying, film laying and precision sowing all-in-one machine which comprises a rack, a fixing frame, a sowing mechanism arranged on the rack, a pipe laying assembly and a film laying assembly which are arranged on the fixing frame, and a film pressing mechanism arranged on the fixing frame, the soil covering assembly is arranged on the fixing frame; the sowing mechanism is used for sowing vegetable seeds. According to the full-automatic on-film vegetable pipe laying, film laying and precision sowing all-in-one machine, automation and integration of sowing, pipe laying, film laying and other operations are achieved, meanwhile, continuous and uniform pressure is applied to a mulching film through the film pressing wheel on the abutting assembly, the mulching film is laid flatly through the continuous and uniform pressure, wrinkles and bubbles are reduced, the film laying quality is improved, and the labor intensity of workers is relieved. By means of the arrangement, it is guaranteed that the mulching film can be tightly attached to the surface of soil, the film pressing wheels can conduct self-adaptive abutting and pressing according to the change of the terrain of the soil, the problems that the mulching film is too tight locally and torn are solved, and the laying effect of the mulching film is improved.

The invention relates to the field of intelligent breeding, in particular to an accurately-controlled intelligent breeding flower watering device. The problem to be solved is that in the breeding process, seedlings are inclined and bent during growth, and the quality of the seedlings is affected. According to the technical scheme, the intelligent breeding flower watering device capable of being accurately controlled comprises an incubator, a seedling raising ring and the like; a plurality of seedling rings are arranged on the incubator; according to the seedling raising device, a poke rod enters the inner side of the seedling raising ring to swing left and right in a small range, inclined seedlings are poked, the seedlings always grow towards the right upper position and the right center position, and it is guaranteed that the seedlings cannot incline during growth; the pushing sheet moves downwards to extrude the surface of the soil and drive the soil and the seedlings to move downwards, so that the soil and the seedlings fall off from the opened bottom plate to finish transplanting, and the transplanting time is effectively saved.

The invention provides a miss-seeding detection and reseeding method and a miss-seeding detection and reseeding system for a potato punching seeder. According to the method, a three-dimensional motion track is collected through an inertial navigation device, and a seeding path topological graph is generated in combination with a mechanical trigger signal; spraying a fluorescence labeling substance to the surface of the soil at the tail part of the seeding machine, and marking a topological graph coordinate corresponding to the spraying moment as a miss-seeding risk area; capturing furrow track flight by using a spectrum, and mapping the image coordinates of the mark points to the coordinates of the miss-seeding risk area in the topological graph by identifying the spectral response signal of the fluorescence mark; generating a reseeding operation path curve based on the aggregation form of the miss-seeding risk area coordinates and the furrow extension direction; and driving the reseeding device to move along the curve, and when the positioning coordinate of the reseeding device coincides with the coordinate of the miss-seeding risk area, activating the seeding mechanism to execute single-grain reseeding and updating the state identifier. According to the application, the potato seeding leak detection and reseeding efficiency and the reseeding position accuracy are improved.

The invention discloses an efficient garden soil remediation device based on garden soil texture, and belongs to the technical field of garden soil remediation. Comprising a walking vehicle body, a soil transition unit, a fixed-thickness spraying unit, a smashing and throwing unit, a stone throwing unit, a powder throwing unit and a rotary tillage feeding part. The soil transition unit comprises a guide-in conveying belt and a first material throwing conveying belt, and a second material throwing conveying belt is arranged under the first material throwing conveying belt; a blanking gap is formed between the first material throwing conveying belt and the second material throwing conveying belt; the fixed-thickness spraying unit comprises a material collecting channel which is fixed to the output end of the guiding-in conveying belt and the periphery of the first material throwing conveying belt in a wrapping mode. The second material throwing conveying belt movably penetrates through the bottom of the inner side of the material collecting channel. According to the efficient garden soil remediation device based on the garden soil quality, soil blocks can be scattered, stone blocks can be directly thrown, soil in-situ remediation is achieved, an interlayer composite remediation system can be formed on the soil surface, and the remediation effect is good.

The invention relates to a construction method of an embedded depth empirical formula under the limit of a high holding power anchor group. The construction method comprises the following steps: S1, establishing a solid model of a finite element model of the high holding power anchor group; s2, working conditions of the finite element model are designed in a grouped mode, and the influences of the seabed surface mooring chain loading angle # imgabs0 #, the mooring chain dragging speed # imgabs1 #, the seabed soil surface undrained shear strength # imgabs2 # and the soil body undrained shear strength gradient # imgabs3 # on the embedding depth of the large holding power anchor set under the limit are analyzed; s3, according to all working condition analysis results of the finite element model, the limit embedding depth of the large holding power anchor group is obtained, and an empirical formula # imgabs4 # of the limit embedding depth of the large holding power anchor group is obtained through multivariate function fitting; and S4, setting a verification working condition through an orthogonal test method, comparing the empirical formula with a finite element analysis result, and verifying the reliability of the empirical formula.

The present invention relates to the technical field of soil detection sampling equipment, and discloses a soil sampling device, comprising a hammer-type sampling cannula unit and a blanking support plate unit fixedly installed at the lower end of the hammer-type sampling cannula unit, wherein a main column rod is plugged into and installed in a positioning sleeve, and a plug-in column welded on the main column rod extends into a box cover shell provided with a lever frame component. When soil is sampled, a supporting base plate component is placed on the ground for support, and a driving motor drives the lever frame component to rotate. The lever columns provided at both ends of the lever frame component lift the plug-in column upward during rotation, so that the main column rod moves upward. When the lever column rotates past the plug-in column position and no longer contacts the plug-in column, the main column rod is hammered to the soil surface due to the dead weight of the main column rod and the action of a reset spring A to chisel the soil downward. The driving motor drives the lever frame component to continuously rotate to realize the reciprocating hammering and chiseling operation of the main column rod, thereby facilitating the sampling operation of the surface hardened soil.

An intelligent irrigation control system that includes: • a plurality of soil moisture sensors (101) configured to monitor the volumetric water content of the soil in real time; • a camera module (102) configured to capture periodic images of the ground surface; • a microcontroller (103) operatively connected to the soil moisture sensors and the camera module, the microcontroller being programmed to: (i) receive and analyze sensor data; (ii) apply image processing algorithms to detect visual indicators of soil dryness; (iii) compare the sensor data with the results of the image analysis; and (iv) activate a relay module (104) to control a water pump for irrigation only when both the sensor data and the image analysis confirm soil dryness; and • a wireless communications module (105) configured to transmit data to a remote interface (106) for user access and control; wherein the system performs automated, image-guided irrigation to optimize water use and crop health.

The present invention discloses a soil rotary tillage rear-throwing flame spraying high-temperature chain contact multi-stage inactivation method, comprising the following steps: S1, machine start-up, debugging, and advancement; S2, primary flame scattering inactivation; S3, secondary surface flame inactivation; S4, tertiary contact high-temperature inactivation; S5, quaternary surface high-temperature inactivation. The present invention provides a new inactivation method, which not only has four inactivation processes and an improved inactivation effect, but also provides a high-temperature chain contact inactivation mode for a heat-conducting hole chain. The heated heat-conducting hole chain is dragged as the machine advances, disturbs, and cuts into the soil surface, and the contacted soil is inactivated with high temperature. During the advancement of the heat-conducting hole chain, the contact area and contact time between the heat-conducting hole chain and the soil are increased, and the inactivation effect is greatly improved.

The invention discloses a cultivation method for improving acidic soil of a greenhouse vegetable base based on rotation of morchella esculenta, and belongs to the technical field of soil improvement. The method comprises the following steps: (1) selecting an acidification test plot of long-term continuous cropping vegetables, and detecting soil pH, conductivity, water-soluble salt and anion and cation concentration; (2) preparing a morchella sextelata strain and culturing the morchella sextelata strain until the inoculation bag is full of hyphae; (3) spreading strains on the surface of soil, and managing fruiting after earthing; and (4) after harvesting morchella esculenta, detecting soil indexes, and evaluating the acidification improvement effect. According to the method, the soil pH value is remarkably increased through rotation of the morchella esculenta, the conductivity and the water-soluble salt content are reduced, the anion-cation balance is adjusted, the soil acidification problem caused by long-term continuous cropping of a greenhouse vegetable base is relieved, and meanwhile the land utilization economic value is increased.

The invention relates to the technical field of intelligent detection, and discloses a T-SVAE feature extraction strategy and a method for improving near infrared spectrum soil rapidly available potassium measurement precision by using the T-SVAE feature extraction strategy, and the method comprises the following steps: step 1, collecting soil surface samples of different plots, obtaining near infrared spectrum data of the soil samples by using a Fourier transform near infrared spectrometer, and calculating the near infrared spectrum data of the soil samples; determining the actual content of quick-acting potassium in the soil sample by adopting a national standard method; the method comprises the following steps: 1, acquiring near infrared spectrum data, 2, preprocessing the acquired near infrared spectrum data, and removing impurity signals caused by instrument fluctuation, environmental interference and sample physical form difference, and 3, constructing a Transform and supervision constraint fused variational self-encoding model (T-SVAE). By constructing a variational self-encoding model fusing Transform and supervision constraint, the problem of feature blindness caused by high-dimensional data difficulty, nonlinear modeling limitation and unsupervised learning in near infrared spectrum data processing of a traditional feature extraction method is effectively solved.

An implement monitoring / soil sensor control system for an agricultural implement may include one or more soil sensors configured to couple to a ground engaging tool of the agricultural implement. The one or more soil sensors may be configured to detect one or more soil properties. Additionally, the soil sensor control system includes a controller with a memory and a processor. The controller is configured to receive a signal indicative of a height of a main frame of the agricultural implement above a soil surface, determine a tool penetration depth of the ground engaging tool based on the height of the main frame, wherein the ground engaging tool is configured to couple to the main frame, and selectively activate the one or more soil sensors based on the tool penetration depth of the ground engaging tool.

The invention discloses a hydraulic fracturing ground stress testing device and method, and relates to the technical field of hydraulic fracturing, and the hydraulic fracturing ground stress testing device comprises testing equipment. According to the hydraulic fracturing ground stress testing device and testing method, through the design of testing equipment, a water source enters the water pump pipe from the water inlet pipe, water flow is sprayed outwards from the nozzle in the water pump pipe, so that the hydraulic fracturing effect is achieved, the rotating mechanism is driven to rotate through flowing of the water flow, and the effect of cleaning the inner wall of a pipeline through friction is achieved; the rubber pipe is extruded by sliding the packing top block on the packing base, so that the rubber pipe is extruded and deformed to be attached to the surface of soil, the packing effect on a test part is achieved, the silica gel column is arranged in the rubber pipe, the silica gel column has a certain supporting effect and prevents a part from being concaved inwards and collapsed, and the rhombic film is arranged on the outer side of the rubber pipe, so that the rubber pipe is prevented from falling off. Therefore, surface friction force of components is increased, service life of the components is prolonged, and friction load is dispersed.

The utility model discloses a rotary tillage, land leveling, seed rope laying and soil covering all-in-one machine for vegetable planting, which comprises a rack, a rotary tillage, a land leveling, seed rope laying and soil covering all-in-one machine, a seed rope laying and soil covering all-in-one machine and a rotary tillage, the rotary tillage mechanism is arranged at the front end of the rack, and the power input end of the rotary tillage mechanism is connected with a power source of the traction equipment through a gearbox arranged on the rack; the trowelling mechanism is arranged on the rack and located on the rear side of the rotary tillage mechanism; the soil block crushing mechanism is arranged on the rack, located on the rear side of the trowelling mechanism and used for crushing the large soil blocks after the large soil blocks are intercepted; the seed rope laying mechanism is arranged on the rack, and the wire outlet end of the seed rope laying mechanism is arranged on the rear side of the soil block crushing mechanism; and the soil covering and flattening mechanism is arranged at the tail part of the rack and is used for covering soil on the seed rope and flattening the soil surface.

The invention belongs to the technical field of soda saline-alkali soil improvement, and particularly relates to a method for desalting a dry farmland plough layer of soda saline-alkali soil. The method comprises the following steps that (1) a soil subsoiler provided with a vibration subsoiling shovel is used for conducting vibration type subsoiling on the soda saline-alkali soil, and the soil loosening depth ranges from 40 cm to 60 cm; the modifier comprises the following components: aluminum sulfate, decomposed cow dung, a mixture of fermented gills and fish viscera, zeolite, carbonized rice husks, potassium fulvate, sulfur powder and compound bacteria, (2) in spring of the current year, a modifier is uniformly scattered on the soil surface of the soda saline-alkali land after deep scarification; after the modifier is spread, the modifier is mixed into the soil surface layer within the depth range of 0-20 cm by adopting a staggered rotary tillage method, soil blocks are harrowed and crushed by using a disc harrow after rotary tillage, and the land is leveled. The method provided by the invention can effectively reduce salt and alkaline components in the soil and improve the content of organic matters in the soil.

The invention discloses a prevention and control method suitable for wheat field invasive weed aegilops tauschii. The method comprises the following steps: S1, wheat stubble treatment: after wheat is harvested, stubble leveling, stubble cleaning, stubble cleaning, centralized storage and retting treatment are performed; s2, irrigation: before autumn crops are sown, selecting continuous weather at 35 DEG C or above for 2-4 days, and irrigating the wheat field in blocks 1-2 days in advance; s3, film covering: covering the surface of the soil with a black plastic film larger than the irrigation land parcel, and burying edges of an earth weir and fixing; s4, solarization treatment: uncovering the film after solarization is performed for 2-4 days, and determining whether irrigation and weir cleaning are performed or not according to the soil moisture content; s5, repeated treatment, wherein the steps are repeated on the aegilops tauschii generation plots in the next year. The aegilops tauschii control method is remarkable in aegilops tauschii control effect, meets ecological and grain safety requirements, and is short in time consumption, easy to operate and low in cost.

The invention provides improver splashing equipment for saline-alkali soil improvement, and belongs to the technical field of improver spraying. Comprising a walking mechanism, a mounting base is mounted at one end of the walking mechanism, a control module is mounted on the surface of one side of the mounting base, a water storage tank is mounted at the top end of the mounting base in a nested mode, one side of the bottom end of the water storage tank is in through connection with a stirring tank through an electromagnetic valve, and the stirring tank is mounted on one side of the top end of the mounting base in a nested mode; a stirring mechanism is embedded in the bottom end of the inner wall of the stirring box, and a motor is connected to the part, extending out of the bottom end of the stirring box, of the bottom end of the stirring mechanism. By arranging the softening spraying assembly, the soil conditioner is sprayed on the soil surface and the deep position of the saline-alkali soil, the dual mixing reaction of the soil conditioner on the surface soil and the deep soil of the saline-alkali soil is achieved, and it is further guaranteed that the soil conditioner can be fully mixed and react with the soil of the saline-alkali soil.

The invention discloses a film mulching device for agricultural planting, and belongs to the technical field of planting, the film mulching device comprises a soil lifting device, a seed sowing device, a film mulching device, a suspension rack and a power transmission device, the power transmission device is arranged on the upper side of the suspension rack, and the soil lifting device, the seed sowing device and the film mulching device are arranged on the lower side of the suspension rack in a linear array mode; the film mulching device is positioned between the seed sowing device and the soil lifting device. A tractor drags the suspension rack to drive the machine tool to advance, the power transmission device is driven to operate, then the soil lifting device is driven to dig a groove in the soil surface, the film mulching device is used for mulching the soil with the groove, the soil lifting device covers the redundant soil on the front side to the two sides of the groove covered with a water permeable film, and then the soil lifting device is driven to lift the soil lifting device to dig the groove. The water permeable film is broken through the seed-metering device to plant the seeds in the groove, and then the soil covering wheel performs soil covering operation to cover and press the mulching film again.

The invention provides a rooter. The rooter comprises a machine frame and two hoeing units installed at the bottom end of the machine frame. The hoeing unit is mostly used for shallow ploughing a soil surface layer 5-15 cm away from the soil surface layer by adopting a coulter, and mostly, the blade part is used for transversely cutting surface soil and removing weeds along with the power, so that the purposes of loosening the surface soil, removing the weeds and reducing soil moisture evaporation are achieved, and the hoeing effect of the hoeing unit is improved. The shallow soil hardening is prevented; the coulter moves within the range of 5-15 cm away from the soil surface layer, in order to control the soil depth of the coulter, an adjusting unit is adopted for adjustment, the lower the ground clearance of the end of the rack is, the coulter is more and more deep into the soil, and on the contrary, the higher the ground clearance of the end of the rack is, the more and more close to the soil surface layer; the coulter is sequentially in contact with soil, transversely scrapes the soil, pries up surface soil and is finally lifted away from the bottom surface, hoeing action is completed, and then circulation is performed.

The invention discloses a soil surface moisture measurement sensor based on a phase detection principle, and relates to the field of soil moisture measurement, and the soil surface moisture measurement sensor comprises a single-chip microcomputer, a sensor main body and a plurality of probe groups; the plurality of probe groups are arranged in different soil layers; the single-chip microcomputer is used for outputting an acquisition signal and a gating signal. The sensor main body is connected with the single-chip microcomputer and is used for receiving an acquisition signal and a gating signal sent by the single-chip microcomputer, outputting a measurement signal according to the acquisition signal and controlling the probe group in the corresponding soil layer to be conducted according to the gating signal; the probe group is connected with the sensor main body and is used for outputting a feedback signal according to the measurement signal; the sensor main body is also used for obtaining a signal phase difference according to the feedback signal and the measurement signal; the single-chip microcomputer is further used for obtaining the soil water content according to the signal phase difference information The soil surface moisture measurement is realized, the multi-point soil moisture measurement efficiency is improved, and the soil moisture measurement cost is reduced.

The present invention provides a method for preparing a modified lignin-based sprayable slow-release urea fertilizer. Compared with ordinary urea, the urea release rate of the fertilizer in water is reduced, and it can sustainably provide nutrition for crops. The sprayable film-forming slow-release urea fertilizer prepared by the present invention also has the function of being a sprayable liquid ground film. Before use, it is an emulsion. This emulsion can be sprayed on the soil surface to form a liquid film layer, and then the liquid film layer is air-dried to form a film. This air-dried film can prevent the moisture and heat in the soil from being lost to the outside. Since the sprayable film-forming slow-release urea fertilizer prepared by the present invention simultaneously meets the three important basic factors required for efficient agricultural production, it produces the effect of increasing the yield of Chinese cabbage. In addition, the sprayability of the slow-release urea fertilizer provided by the present invention also makes construction simple and operation easy, which is conducive to the promotion and application of the product.

The invention relates to the technical field of geothermal tail water treatment and resource utilization, in particular to an anti-blocking geothermal tail water recharge device which comprises a geothermal production well, a recharge wellhead and a recharge main pipeline and is integrated with a heat energy recovery mechanism, a fracturing perforation mechanism and a rainstorm emergency mechanism. The heat energy recovery mechanism achieves efficient recovery of waste heat through the synergistic effect of a heat exchanger and a phase change material heat storage tank and converts the waste heat into available energy. The fracturing perforation mechanism can be used for forming small holes in the rock-soil surface so as to enhance the permeability; the rainstorm emergency mechanism can effectively cope with the sudden rainfall situation, and water resource waste is avoided. The effects of improving the geothermal tail water heat utilization rate, optimizing the reservoir characteristics and improving the overall system stability are achieved, and meanwhile the environment-friendly water resource management target is achieved.

The utility model provides a prefabricated channel relates to water conservancy engineering irrigation and drainage channel technical field. The prefabricated channel realizes the effective link of section through setting up support step and lap overstep at U type channel groove both ends, effectively avoids the dislocation of assembling lap joint and the damage of water stop, the joint of each section U type channel groove is constituted the combined type seepage prevention system by the joint surface sealing filler and the built -in water stop band, has improved the leakproofness and water stop effect of joint surface greatly, the top of channel groove adopts hidden type protection cover plate to cover, can strengthen the safety protection of irrigation and drainage channel, can slow down the silting of groove bottom obviously, is favorable to the later operation management maintenance, the wall body adopts the gradual expansion structure of overcurrent surface vertical, retaining soil surface inclination, can guarantee the overcurrent surface after the assembly of each adjacent U type channel groove is always even and straight, avoids the heterofacial convex, improves the flow state, U type channel groove adopts the whole prefabricated thin wall type structure, safe and stable, economic and practical, simple structure, can prefabricate or purchase the factory prefabricated product on the spot.

The invention discloses a land comprehensive improvement quality evaluation method and system based on big data, relates to the technical field of land resource management, and solves the problem of lack of effective quantification means for more critical ecosystem function indexes. The invention discloses a land comprehensive improvement quality evaluation method and system based on big data. The method comprises the steps that a remote sensing image module and an optical image module are used for collecting image data of soil surface vegetation; uploading the acquired image data to a cloud platform through a data network, and establishing a soil surface vegetation optical evaluation index database; the carbon dioxide monitoring module and the oxygen monitoring module are used for monitoring the carbon dioxide concentration and oxygen near the vegetation on the soil surface in real time. According to the method, a soil surface vegetation carbon sequestration evaluation index database is established to calculate vegetation net primary productivity, biomass and carbon utilization efficiency, the vegetation net primary productivity, biomass and carbon utilization efficiency are summarized through a software program, and an ecological quality comprehensive index of soil surface vegetation is given.

The invention relates to a soil stabilizer for airport flying area soil surface ecological reconstruction and a preparation method thereof. The soil stabilizer is prepared from the following raw materials in parts by weight: 22-24 parts of river sand, 8-10 parts of quick lime, 8-9 parts of cement, 6.5-7 parts of alum, 4-5 parts of glutinous rice flour, 15-16 parts of realgar powder and 124-144 parts of water. The soil stabilizer has the advantages that after the soil stabilizer is used for curing the airport flying area soil surface, the airport flying area soil surface can achieve certain compactness, durability, insect repelling performance and safety under the condition that sufficient permeability is guaranteed, the maintenance cost and the maintenance frequency of the airport flying area soil surface are greatly reduced, the maintenance expenditure is saved, and the maintenance cost is reduced. And after the airport flying area is solidified, a good insect-repelling and durable effect is achieved, so that the economic benefit of airport operation can be improved, the overall safety of airport operation can be improved, and a feasible solution is provided for construction of a green airport.