228 results about "Soil depth" patented technology

The invention provides an intelligent early warning method and system for phosphorus tailing improved soil heavy metal migration, relates to the technical field of computers, and accurately predicts the main migration direction of heavy metal pollutants by combining factors such as terrain gradient, hydrological flow direction and soil structure heterogeneity. The method comprises the following steps: acquiring soil information of a to-be-detected area and soil potential information of a detection point in the to-be-detected area; determining heavy metal concentration information of the detection point according to the soil potential information; the heavy metal concentration information is used for reflecting heavy metal concentration distribution conditions corresponding to different soil depths of the detection points; determining migration direction information of the heavy metal at the detection point; the migration direction information is used for reflecting the corresponding heavy metal migration direction distribution condition of the heavy metal of the detection point in the three-dimensional space; and predicting a pollution diffusion area based on the migration direction information, the organic decomposition rate and the underground water level fluctuation information, and performing visual display.

The invention discloses an intelligent agricultural water-saving irrigation system and a control method, and relates to the technical field of agricultural irrigation. Comprising the following steps: a land area planning module performs equal-area division on a farmland, sets a detection node array, and monitors water retention conditions of different soil depths; the moisture gradient characterization module calculates the vertical moisture gradient and the direction of the vertical moisture gradient of the evaluation area in real time through edge calculation. And the irrigation water amount correction module fuses and generates a target water-holding capacity based on the leaf stomatal conductance signal and the moisture gradient. The irrigation circulation termination control module uses pulse type infiltrating irrigation, and sets double termination conditions of the water-holding capacity change rate and the permeability. The closed-loop feedback adjustment module detects the soil water content after irrigation, characterizes the water leakage risk and feeds back and adjusts the irrigation water amount, closed-loop control is formed, and effective utilization of water resources is ensured.

The present invention relates to the field of carbon storage monitoring technology, which is a sampling device for monitoring wetland carbon storage. The sampling device includes a square frame, a supporting frame, etc. The supporting frame is securely mounted on the square frame, with a U-shaped frame fixed at its top. The U-shaped frame houses a mounting plate, and a lifting plate is also slidingly mounted on the supporting frame. The sampling outer cylinder is fixedly mounted on the lifting plate, with an inner sampling cylinder inserted inside. Additionally, the sampling device comprises a lifting drive component, a depth control component, and a sampling component. The sampling device can both improve the accuracy of sampling work at different soil depths and eliminate detection errors with high degree of automations. At the same sampling position, multiple sets of samples can be collected simultaneously to ensure the accuracy of sampling results.

The invention discloses a soil oxygen dynamic prediction method for precision agriculture, and belongs to the technical field of soil oxygen prediction, and the method comprises the following steps: S1, collecting key parameters of different soil depths in a research area, and S2, calculating a soil oxygen diffusion coefficient according to the key parameters of different soil depths in the research area; s3, calculating the respiration rate of the soil root system; s4, constructing a soil oxygen consumption model; and S5, carrying out iterative calculation to obtain soil oxygen concentration distribution at different moments and different depths. The method can solve the problem that the oxygen concentration of the soil is influenced by complex factors such as moisture, temperature, porosity, root respiration and microbial activity, and provides a scientific basis for precise agricultural irrigation, soil health assessment and oxygenation irrigation strategy optimization.

The utility model discloses a spray irrigation device based on crop growth moisture requirements, which belongs to the technical field of spray irrigation devices, and comprises a threaded pipe, a water inlet pipe, a water outlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, the hollow threaded rod is in threaded connection with the inner wall of the threaded pipe, and the top wall of the hollow threaded rod is fixedly connected with a second knob; the rotating block is rotationally connected to the inner wall of the second knob, and a positioning triangular groove is formed in the inner wall of the rotating block; according to the utility model, the moisture in soil is detected through the arranged moisture detection probe and is displayed through the moisture detection display meter, so that the watering quantity can be customized according to the water quality condition of the soil; a first knob is in threaded fit with a threaded pipe to drive a lifting sleeve to drive a connecting plate to perform lifting operation, so that a movable cone penetrates into the soil to detect moisture conditions of different depths, and the problem that self-adaptive sprinkling irrigation cannot be performed according to crop growth moisture requirements in the prior art is solved.

The invention relates to a self-adaptive seeding density regulation and control seeder, which realizes optimization of seeding parameters by dynamically adjusting seeding density, seeding quantity, seeding depth and fertilization quantity, realizes annular fertilization by rotating a fertilization pipe, synchronously operates the fertilization pipe and a covering shovel, concentrates fertilizer around plant root systems, promotes development and extension of the root systems, and improves the seeding density. High-pressure gas is used for assisting seeding and fertilization, blockage is prevented, smooth flowing of seeds and fertilizer is ensured, the quantity is accurately controlled through the metering seed box and the quantitative fertilization box, resource utilization is optimized, resource waste is reduced, and the crop yield and quality are improved; through dynamic adjustment of sowing parameters, annular fertilization, an anti-blocking function and synchronous combined action of seed and fertilizer, the planting quality is improved, it is ensured that seeds are located at the most suitable soil depth, diseases are reduced, the health condition of crops is improved, the yield and quality of the crops are improved, resource waste is reduced, and the intelligent level of agricultural production is improved by integrating the measures.

The invention belongs to the technical field of analysis of nitrogen content data in soil, and discloses a corn cultivation-oriented soil monitoring method, device and equipment, and the method comprises the following steps: selecting sampling points according to corn root system distribution to obtain nitrogen content data curves of different levels of soil depths; according to the nitrogen content data curve, the nitrogen element consumption of each layer of soil depth at the current moment is determined; calculating the nitrogen element offset of each layer of soil depth according to the nitrogen element consumption; determining the soil depth of the growth part of the corn root system at the current moment according to the nitrogen element offset, and determining the additional nitrogen content supply degree according to the fluctuation change of the nitrogen element offset of the soil depth of the growth part of the corn root system at the current moment; fertilizing the surface soil of the corn according to the supply degree of the extra nitrogen content, and respectively analyzing the normative value of the depth of each layer of soil; according to the normative value of the depth of each layer of soil, soil monitoring of corn cultivation is realized.

The utility model belongs to the technical field of sampling devices, and particularly relates to a soil plough layer fixed-point sampling device which comprises a sampling barrel. Through arrangement of a positioning mechanism and cooperation of a sealing plate and a pressing plate, the depth of soil sampled by the sampling barrel can be accurately controlled, so that the soil depth fixed-point sampling effect is achieved, and the soil detection precision is improved, namely, according to the depth of soil needed by the sampling barrel, an inner gear can be pushed, and the pressing plate can be pulled to drive a sealing block to move upwards; the sampling barrel can be vertically inserted into the soil at a sampling site to sample the soil until the sealing block moves upwards to a specified height, the internal gear is loosened, and the pressing plate is moved and limited, but after the soil at a specified depth is sampled, the sampling barrel does not perform sampling in a full load manner, the sampling barrel can be pulled out, and the internal gear is pushed out again; limiting on the pressing plate is relieved, the pressing plate is pushed to be matched with the sealing block to push the sampled soil into the sample collector, and then soil sampling at the next position can be conducted.

The invention relates to the field of irrigation valve control, in particular to an intelligent valve group for irrigation of hydraulic engineering and a control system. According to the system, firstly, humidity data of different soil depths of an irrigation area where each sprinkling irrigation valve is located at each moment and the valve opening degree of each sprinkling irrigation valve during last irrigation are obtained, and for each irrigation area, the humidity data of different soil depths are divided to obtain an irrigation period of each soil depth; obtaining the moisture demand degree of each soil depth based on the change of the humidity data in each irrigation period of each soil depth, and obtaining the optimal valve opening degree of each irrigation area according to the difference of the moisture demand degrees of the same soil depth between each irrigation area and other irrigation areas and the valve opening degrees of the other irrigation areas. And the crops are irrigated. The opening degree of the sprinkling irrigation valve can be accurately controlled, so that the requirement of current crops for water is met, and the irrigation effect is improved.

The utility model relates to the technical field of soil disinfection devices, in particular to a deep disinfection device for grain planting soil, which improves the uniformity of soil disinfection treatment, improves the convenience of directly disinfecting planting soil of a farmland on site, improves the working efficiency and reduces the use limitation. Comprising a vehicle body and a supporting base installed on the outer side wall of the vehicle body. The agricultural machine further comprises a spraying device, a mixing device, a first support, multiple sets of first push cylinders and multiple sets of ploughing rods, the first support is rotationally installed on the outer side wall of the supporting base, the fixed ends of the multiple sets of first push cylinders are rotationally installed on the outer side wall of the vehicle body, and the movable ends of the multiple sets of first push cylinders are rotationally connected with the end of the first support. The multiple sets of ploughing rods are all installed at the bottom end of the first support, the spraying device is installed on the vehicle body and used for spraying a disinfectant to soil, and the mixing device is arranged on the vehicle body and used for mixing and stirring the soil sprayed with the disinfectant.

The invention discloses a sample selection device for natural resource engineering surveying and mapping, and relates to the technical field of engineering surveying and mapping. The bottom plate is arranged at the lower end of the sampling pipe in a sleeving manner and is used for ensuring that the sampling pipe is always in a vertical state during sampling, and the depth-keeping sampling mechanism is arranged at the bottom of the movable groove and is used for sampling soil with the required depth. The tip end of the bottom of the sampling pipe is inserted into a soil sampling area firstly, the sampling pipe is rotated to vertically drill into soil, after the through groove is drilled into the soil needing to be sampled by a depth, a soil sample can be taken out more conveniently by utilizing the depth-keeping sampling mechanism, and meanwhile, depth-keeping sampling can be carried out on the soil needing to be sampled.

A soil moisture gauge for determining a level of moisture in a plant pot has an elongated main body, which has a lower tip and grooves formed in and along the main body. A graduated scale is formed in the main body over a distance corresponding to a maximum expected soil depth when the gauge is inserted into soil contained in the plant pot. When the gauge is inserted into the plant pot and then pulled out of the plant pot, moist soil is retained in the grooves whereas dry soil falls from the grooves, whereby a user can read moist soil depth on the graduated scale. The reading from the soil moisture gauge can be used as an input to a system to adjust a drying profile that indicates to a user a time by which the plant should be watered.

The invention relates to an agricultural non-point source polluted soil nitrate nitrogen in-situ monitoring system and method, and aims to solve the technical problem that accurate in-situ monitoring of soil leaching nitrate nitrogen and a migration rule is difficult to realize. Wherein the soil leaching solution extraction device comprises moisture sensors buried in different soil depths, a leaching solution extraction probe, a solution storage container and a negative pressure source, and the detection device comprises at least two groups of micro-flow pool channels connected in parallel and a photoelectric detection path corresponding to nitrate nitrogen ultraviolet light absorption and non-absorption wavebands; the liquid pumping pipeline is respectively communicated with the liquid storage container and the micro-flow pool channel; the control module receives information collected by the moisture sensor and determines whether to send a negative pressure source starting instruction or not after comparing the information with a set value, a negative pressure cavity is formed in the leaching solution extraction probe, and soil leaching solution collection is achieved. The in-situ monitoring of the leaching nitrate nitrogen can be realized without disturbing the soil structure; the result is continuous, accurate and reliable, and a reliable way is provided for obtaining accurate data information related to agricultural non-point source pollution distribution, migration, development trend and the like.

The invention relates to the technical field of geological prospecting depth measurement, in particular to a geological prospecting rock-soil depth measurement method and system, and the method specifically comprises the steps: collecting depth values and angle deviation values of rock-soil geological prospecting at all moments, constructing all depth fluctuation point sets and all angle fluctuation point sets based on the local fluctuation characteristics of the depth values and the angle deviation values, based on the coincidence condition of the time period of the depth fluctuation point set and the time period of the angle fluctuation point set and the local data fluctuation difference of each depth value, constructing the jitter interference degree of each depth value, and based on the jitter interference degree of each depth value and the collected angle deviation value, obtaining the measurement result of the rock-soil geological exploration depth. Therefore, the measurement of the rock-soil geological exploration depth is realized, the influence on the measurement result of the rock-soil geological exploration depth due to the fact that the hole formed by drilling is not vertical enough is reduced, and the accuracy of the measurement result of the rock-soil geological exploration depth is further improved.

The invention relates to a steep slope ecological restoration device, and belongs to the field of ecological restoration equipment, the steep slope ecological restoration device comprises a soil storage frame embedded in slope soil, the soil storage frame comprises a transverse plate and a longitudinal plate, the transverse plate and the longitudinal plate are fixedly connected into a whole in a vertically crossed mode, the soil storage frame divides slope surface soil into a plurality of areas, and the tops and the bottoms of the transverse plate and the longitudinal plate are respectively provided with a plurality of through holes. A blade for cutting into soil is at least arranged at the bottom; the four corners of the soil storage frame are each provided with a stand column, screw rods are coaxially and rotationally installed in at least two stand columns, the cross section of a column hole of the stand column where the screw rods are located is rectangular, the screw rods are sleeved with threaded blocks in a threaded fit mode, and the threaded blocks are of a rectangular block structure in axial sliding fit with the column holes. One end of the screw extends out of the top end of the stand column and then can be in transmission connection with a driving motor, and the threaded block drives the soil storage frame fixedly connected with the threaded block to move in the slope soil depth direction. The abrupt slope ecological restoration method can safely, reliably and rapidly restore the abrupt slope ecology, and has recoverability and environmental protection property.

The invention relates to the technical field of physical detection of deep soil, in particular to soil detection equipment for determining components of deep soil, which comprises a deep soil detection mobile rack; a bearing top frame is fixedly assembled on the surface, and a vertical groove is formed in the inner wall of the front side of the bearing top frame; a deep soil sampling device is arranged on the bearing top frame; an outer gear ring drives a drilling bit to rotate into the ground, along with rotation of the drilling bit, a first servo motor is started, a lifting frame box drives a deep soil detection structure, a soil depth extension assembly and a deep soil drilling assembly to descend, and the drilling bit continuously opens a hole along an adjusting hole; according to the deep soil sampling structure, the deep soil drilling assembly and the soil depth extension assembly penetrate into the ground, the deep sampling applicability is high, the soil depth extension assembly and the deep soil drilling assembly in the deep soil sampling structure are modularly arranged, and the number of the soil depth extension assemblies can be increased according to needs so as to meet the sampling requirements of deep soil at different depths; the flexibility is high.

The invention relates to the technical field of intelligent agriculture, in particular to an intelligent agricultural water-saving irrigation control system based on a wireless sensor network, which comprises the steps of acquiring crop information, judging an irrigation regulation and control stage, marking land parcels, reading marks, extracting serial numbers of associated acquisition points to divide data transmission priorities, humidity measurement values of different depths are extracted based on the priority list and compared with a crop root layer demand threshold value to identify a water layer needing to be supplemented, root layer types are distinguished according to the soil layer depth, intervals or continuous irrigation periods are set, and the water supply rhythm is arranged; water supply arrangement is read, and instruction contents such as plot numbers, starting and ending time and water supply depth are generated and combined into tasks capable of being continuously called. By monitoring the crop growth and the soil humidity in real time, the irrigation strategy can be accurately judged and dynamically adjusted to meet the water requirement of each stage, the crop root depth and the soil humidity are accurately matched, the irrigation periods of deep and shallow soil layers are optimized, and a flexible scheme is provided to improve the water resource utilization efficiency.

The invention discloses a method for judging collapsibility of silty-fine sand. The method specifically comprises the following steps: step 1, carrying out a standard penetration test on site and obtaining a target soil layer depth and a hammering number; 2, taking a soil sample from the standard penetration test, carrying out an indoor moisture content test to obtain a moisture content value, and carrying out a relative density test to obtain the maximum dry density and the minimum dry density; 3, establishing a relational expression among the hammering number N of the target soil layer, the relative compactness and the dry density according to an on-site standard penetration test, and substituting the hammering number, the water content, the depth of the target soil layer, the maximum dry density and the minimum dry density value into the relational expression to obtain the dry density of the target soil layer; 4, carrying out an indoor remolded soil collapsibility characteristic test, establishing a multiple linear regression prediction formula, substituting the moisture content value and the dry density, obtaining a collapsibility coefficient delta s of the silty-fine sand soil layer, and determining the collapsibility grade of the silty-fine sand; according to the method, the collapsibility of the silty-fine sand can be accurately judged on site.

The invention relates to the field of acoustic metamaterials, and discloses an acoustic metamaterial structure based on a local resonance mechanism, the acoustic metamaterial structure comprises a plurality of metamaterial unit cells, each metamaterial unit cell structure comprises a cylindrical steel core, an inner-layer annular rubber connecting piece, an inner-layer annular steel ring, an outer-layer annular rubber connecting piece, an outer-layer annular steel ring and soil, the whole component is designed to be deeply embedded into soil, the embedded depth of the component corresponds to the height of the outer annular steel ring, the stability and harmony of the structure are ensured, the lower portion of the component penetrates into the soil layer and is tightly combined with the soil to form a stable supporting foundation, the upper portion of the component protrudes out of the soil layer, and the component plays a role in the structure; compared with the prior art, the method has a remarkable control and attenuation effect on vibration elastic waves in a region adjacent to a track, a structural band gap is successfully constructed through application of a local resonance theory, adverse effects caused by track traffic vibration are effectively relieved or eliminated, and meanwhile the transmission efficiency of the vibration is remarkably reduced.

The invention discloses a system and a method for identifying a vibration signal type based on POTDR, and relates to the technical field of optical fiber sensing. The system comprises a laser, a circulator, an optical fiber to be measured, a polarization beam splitter, a photoelectric converter assembly, a signal collector and a signal processing unit. The method comprises the following steps: when a vibration signal generated by a surrounding environment affects an optical fiber to be measured, obtaining a measurement result of vibration signal characteristics based on a POTDR demodulation technology; vibration signals at any position are collected, and a data relation library of the soil environment, the soil depth and the vibration signals is established; and based on the established data relationship library, identifying vibration signal characteristics in different soil environments and different depths, and further identifying the signal type of vibration. According to the invention, based on the IQ demodulation technology of POTDR, the soil medium characteristics and the burial depth are fused, and the accuracy of vibration signal type identification is improved.

The invention relates to the technical field of soil temperature increasing test simulation, and provides a field soil temperature increasing simulation device and method.The device comprises a heating pipe used for increasing temperature of soil in a simulation area, the heating pipe comprises a plurality of sections, the sections are laid in the simulation area in a layered mode according to the soil depth, and the heating pipe is used for heating the soil in the simulation area; the subsections in each layer are continuously and uniformly laid; the heating pipe comprises an insulating pipe and an electric heating wire penetrating through the insulating pipe; the power supply assembly is used for supplying power to the electric heating wire under the condition that the insulating tube is filled with the liquid, and the electric heating wire heats the liquid in the insulating tube under the condition that the electric heating wire is electrified; and the temperature controller is used for controlling the heating temperature of the heating pipe. According to the soil temperature increasing device, soil temperature increasing is achieved in a layered arrangement and heat conduction mode, soil disturbance is small, meanwhile, the temperature increasing mode is mild and stable, vegetation damage is avoided, the influence on the experimental result of soil temperature increasing simulation is reduced, and the accuracy of the experimental result is ensured.

The invention relates to the technical field of geological sampling, in particular to mining geological sampling equipment which mainly comprises a bottom frame, a fixing plate fixedly mounted on the top surface of the bottom frame, a drilling machine arranged above the fixing plate, a connecting pipe fixedly mounted at the lower end of the drilling machine, and a rock core pipe in threaded connection with the lower end of the connecting pipe. The anti-falling mechanism is arranged in the rock core pipe, and the fixing mechanism is arranged below the connecting pipe. When a connecting pipe is connected with a rock core pipe, the connecting pipe extrudes a round frame to drive a connecting strip and a first cylinder to move to the lowermost portion of a second groove body, a first elastic piece applies elastic force to a movable frame, the movable frame pushes oblique teeth to extrude soil in the rock core pipe, and due to the fact that the oblique teeth are inclined upwards, sampled soil can enter the rock core pipe upwards; the outer wall of the soil is extruded by the helical teeth, so that the sampled soil is not easy to fall off from the rock core pipe, and the integrity of the soil and the subsequent detection accuracy of the soil with different soil layer depths are ensured.

The invention relates to the technical field of intelligent agriculture, in particular to a digital twinborn-based irrigation area water management method and system. The digital twinning-based irrigation area water management method comprises the following steps: detecting and obtaining irrigation area soil moisture content data, and constructing soil moisture content curved surfaces of different soil depths according to the soil moisture content data; acquiring crop planting information of each irrigation area unit in the irrigation area, and constructing a crop soil moisture content curve according to the crop information. And according to the weather data in the prediction period, obtaining each coordinate point and a soil depth prediction soil moisture content curve of the irrigation area in the prediction period. Calculating a soil moisture content difference value corresponding to each coordinate point and depth, and constructing a soil moisture content difference value curve. Whether the soil moisture content difference value of the soil moisture content difference value curve is larger than a preset stage standard soil moisture content difference value or not is judged; and if so, sending an alarm signal. The soil moisture content is predicted according to the weather forecast condition, water consumption of an irrigation area is managed in a targeted mode, crop growth can be intervened, and water resources can be effectively utilized.

The invention provides a winter wheat root system water-saving property identification method, system and device, and relates to the technical field of crop water-saving property identification, intercropping is performed in a specified test area, and a competitive area and a non-competitive area are divided to calculate an area competitive index. Collecting a winter wheat root system sample in the elongation stage, analyzing the root system length and surface area of the sample in different soil depths, and generating a root system growth index; meanwhile, acquiring soil water content data, calculating the water absorption capacity and the water utilization efficiency of the winter wheat, and analyzing a root system water absorption coefficient in combination with a root system growth index; and generating a water-saving evaluation index according to the water utilization efficiency and the root water absorption coefficient, and comparing the regional competition index with a set water-saving threshold value to judge the root water-saving property of the winter wheat.

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 utility model relates to the technical field of slope protection for farmland construction, in particular to a slope protection device with a stable structure for farmland construction. According to the technical scheme, the slope protection device with the stable structure for farmland construction comprises a ramp protection assembly and further comprises a ramp connection support assembly; a ramp connecting support assembly is arranged at the lower end of the ramp protection assembly. The ramp protection assembly comprises an outer ring frame, a soil burying ring frame, a deep burying support, a fixing plate and fixing holes. The slope protection assemblies are fixedly connected together through the slope connection support assemblies to form a stable protection whole, the slope connection support is fixed to the slope by deeply inserting the fixing bolts into the deep layer of soil, the connection stability is effectively improved, then the soil burying ring frame is filled and fixed through soil, stones and vegetation, and the slope protection effect is improved. The soil moisture is fixed in the space in the soil burying ring frame, so that the water and soil loss problem is effectively reduced.

The invention discloses a method for tracing phosphorus pollution in water based on nano colloid coupled organic matter fingerprints. The method comprises the following steps: acquiring a water sample of at least one to-be-traced water body and soil samples of at least one soil depth on a plurality of positions in a peripheral area of the to-be-traced water body; respectively determining fingerprint information of the phosphorus-polluted nano colloids with various particle sizes in the water sample and the soil sample; and screening out the fingerprint information of the phosphorus-polluted nano-colloid in at least one soil sample similar to the fingerprint information of the phosphorus-polluted nano-colloid in the water sample, and taking the position of the screened at least one soil sample as a first source of phosphorus pollution in the water body to be traced. According to the method disclosed by the invention, the soil sample related to water pollution can be effectively screened out by constructing the unique fingerprint spectrum of the phosphorus pollution particles and comparing the fingerprint spectrum information of the phosphorus pollution nano colloid in the water sample and the soil sample, so that the position of the pollution source is determined.

The invention discloses an efficient plant cultivation device for garden building engineering construction, and relates to the technical field of plant seedling raising. The device comprises a main body frame, wherein a cultivation table is arranged on the main body frame; the soil loosening mechanism comprises a plurality of soil loosening claws which are installed on the cultivation platform and used for stirring soil, each soil loosening claw is fixedly installed on the connecting column, the soil loosening mechanism further comprises a plurality of cultivation barrels which are installed on the cultivation platform and used for containing the soil, and a plurality of vertically-downward spraying holes are formed in the surfaces of the soil loosening claws; the soil loosening claws are driven to reciprocate in the circumferential radius direction of the cultivation barrel through the matching effect of the moving mechanism and the sliding groove mechanism, so that the turning area of the soil loosening claws in the horizontal direction of the soil is increased, and the loosening efficiency of the soil in the horizontal direction is improved; meanwhile, the soil loosening claws are driven to reciprocate in the vertical direction under the matching action of the moving mechanism and the reciprocating mechanism, so that the turning area of the soil loosening claws in the depth direction of the soil is increased, and the efficiency of loosening the soil in the vertical direction is improved.

The invention relates to the technical field of farmland available nutrient information online acquisition, and discloses an online farmland available nitrogen and phosphorus nutrient networking monitoring method which comprises the following steps: firstly, burying a plurality of sensor combined probes and sampling probes in different depths of farmland monitoring area soil; secondly, constructing a monitoring device at a farmland intersection to extract soil leaching solutions at different depths and monitor the content of available nitrogen and phosphorus nutrients on line; and finally, uploading a monitoring result to a cloud platform for storage, analysis and processing. According to the method, the dynamic change of available nitrogen and phosphorus nutrients in different depths of soil is monitored on line, so that farmland available nutrient information is obtained on line, accurate management of crop nutrients is realized, and the problems of hysteresis and data distortion of a traditional sampling detection method are solved; meanwhile, nutrient distribution of a monitoring area is managed in combination with an internet cloud platform, space nutrient information of a certain farming area is obtained, the fertilization mode is dynamically adjusted, the utilization rate of chemical fertilizer is effectively increased, and a scientific basis is provided for agricultural non-point source pollution prevention and control.