A method for determining response characteristics of pinus massoniana root system growth dynamics to soil changes

Abstract

The application discloses the technical field of Pinus massoniana root system detection and relates to a method for determining the response characteristics of Pinus massoniana root system growth dynamics to soil changes, which comprises the following steps: step 1, formulating a sampling route and a plurality of data sampling depths around Pinus massoniana in different areas; step 2, drilling sampling holes along the sampling route in sequence, and forming sliding grooves arranged along the length direction of the inner side wall of the sampling holes and a plurality of limiting ring grooves perpendicular to the sliding grooves, the depths of the limiting ring grooves corresponding to the data sampling depths one by one; step 3, installing sampling tubes into the sampling holes along the sliding grooves; step 4, collecting soil at each data sampling depth through a data acquisition device; and step 5, determining the response characteristics of Pinus massoniana root system growth dynamics to soil changes. When the response characteristics of Pinus massoniana root system growth dynamics to soil changes are determined, the method improves the convenience of soil and Pinus massoniana root system information collection and makes the soil and Pinus massoniana root system information have higher accuracy.

Description

Technical Field

[0001] This invention belongs to the field of Masson pine root system detection technology, specifically a method for determining the response characteristics of Masson pine root system growth dynamics to soil changes. Background Technology

[0002] Masson pine is native to Guangdong and Guangxi, and is now mainly produced in Jiangsu, Anhui, and western Henan. It thrives in arid, barren red soil, gravelly soil, and sandy soil, or grows in rock crevices, and is a pioneer tree species for the restoration of forests on barren mountains.

[0003] Soil, as the substrate on which Masson pine grows, is crucial to its growth and development. Soil provides Masson pine with the water, nutrients, and other conditions necessary for its survival. The physical and chemical properties of the soil determine the growth status of Masson pine, and the growth of Masson pine, in turn, affects the soil, gradually improving its environmental conditions.

[0004] The root system of Masson pine exhibits particularly pronounced response characteristics to soil changes. The response characteristics of Masson pine roots vary with changes in the soil environment. Obtaining and analyzing these response characteristics can help people better understand the impact of soil on Masson pine, thereby optimizing the soil environment for Masson pine. However, due to the deep root system of Masson pine, soil information needs to be collected from different depths, which is inconvenient and limits the accuracy of the data collection, thus affecting the final confirmation results.

[0005] In summary, there is an urgent need to propose a method for determining the response characteristics of Masson pine root growth dynamics to soil changes, so as to facilitate the accurate collection of soil information and thus accurately determine the response characteristics of Masson pine root growth dynamics to soil changes, providing an important basis for subsequent optimization of the soil environment for Masson pine. Summary of the Invention

[0006] The purpose of this invention is to provide a method for determining the response characteristics of Masson pine root growth dynamics to soil changes, which can accurately collect soil information and accurately determine the response characteristics of Masson pine root growth dynamics to soil changes.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: A method for determining the response characteristics of Masson pine root growth dynamics to soil changes, comprising the following steps:

[0008] Step 1: Select different soil areas and use ultrasonic sensors to detect the approximate location of the roots of Masson pine in different soil areas. Based on the approximate location of the roots of Masson pine and the soil area and type to be sampled, formulate sampling routes and several data sampling depths around Masson pine in different areas.

[0009] Step 2: Drill sampling holes sequentially along the sampling route, and open sliding grooves and several limiting ring grooves perpendicular to the sliding grooves on the inner sidewall of the sampling holes along their length. The depth of the limiting ring grooves corresponds one-to-one with the data sampling depth.

[0010] Step 3: Install the sampling tube into the sampling hole along the sliding groove, slide the limiting protrusion on the sampling tube into the limiting sliding groove to fix the sampling tube in the sampling hole, and release the collection sensor group into the soil by pulling the release plate that is slidably fitted in the side wall of the sampling tube. The sensor group collects soil information at each data sampling depth in real time.

[0011] Step 4: Collect soil samples at each data sampling depth using data acquisition equipment, and then install data acquisition equipment at each data sampling depth to collect real-time image information of the Masson pine root system.

[0012] Step 5: Obtain real-time soil information and soil detection information collected by the sensor sampling group, and combine them with real-time image information of Masson pine root system and different selected soil areas to determine the response characteristics of Masson pine root growth dynamics to soil changes.

[0013] The above approach has the following beneficial effects:

[0014] 1. This solution, by setting up a sampling tube, can conveniently collect soil information at the required depth compared to existing technologies, and can observe changes in the root system of Masson pine. Furthermore, because the limiting protrusion of the sampling tube slides into the limiting ring groove to fix the sampling tube, and the limiting protrusion on the sampling tube corresponds to the data sampling depth, the sensor group can accurately act at the data collection depth during subsequent soil data collection, accurately collecting data at the required depth. The collected soil information and Masson pine root information are then combined for analysis, thereby accurately confirming the response characteristics of Masson pine root growth dynamics to soil changes.

[0015] 2. Compared with the existing method of collecting data after sampling, this method combines data collection after sampling with real-time data collection, making the obtained soil information more accurate and effective. Furthermore, by collecting root information of Masson pine at the corresponding data sampling depth, it is possible to realize the response characteristics of Masson pine roots at different depths to soil at different depths, making the confirmed response characteristics of Masson pine root growth dynamics to soil changes more complete and detailed.

[0016] In summary, this scheme improves the convenience of collecting soil and root information in the process of confirming the response characteristics of Masson pine root growth dynamics to soil changes, while also ensuring high accuracy of both information, making it easier to accurately determine the response characteristics of Masson pine root growth dynamics to soil changes.

[0017] Furthermore, in step 1, when determining the sampling route around the Masson pine, the depth of the highest point of the limiting ring groove corresponds one-to-one with the data sampling depth, based on the location of the Masson pine, soil type, root growth direction of the Masson pine, and ground inclination.

[0018] Beneficial effects: By combining the location of Masson pine, soil type and root direction to formulate the sampling route, the sampling tubes can be installed according to the sampling route, which makes it easier to collect soil information that is closer to the roots of Masson pine and information about the roots of Masson pine over a larger area.

[0019] Furthermore, in step 3, after fixing the sampling tube inside the sampling hole, the sampling tube extends at least 20cm above the ground, and the open end of the sampling tube is sealed, and a protective cover is installed on the sampling tube extending above the ground.

[0020] Beneficial effects: By setting the sampling tube at least 20cm above the ground and protecting the opening of the sampling tube, it is possible to effectively prevent debris or rainwater from entering the sampling tube and affecting information collection.

[0021] Furthermore, in step 3, the sampling tube includes a sampling tube body with one end open and the other end closed. The outer wall of the sampling tube body is provided with several limiting protrusions corresponding to the data sampling depth. The side wall of the sampling tube body is provided with several sampling ports corresponding to the data sampling depth. The inner wall of the sampling tube body is provided with several limiting grooves corresponding to the data sampling depth.

[0022] A sampling groove is provided inside the side wall of the sampling tube. A first elastic element is fixedly connected to the bottom of the sampling groove. A mounting plate is fixedly connected to the end of the first elastic element away from the bottom of the sampling groove. A sensor assembly is fixedly connected to the mounting plate. A release plate is slidably fitted inside the side wall of the sampling tube body. The release plate passes through all the sampling grooves, and in the initial state, the sampling end of the sensor assembly is abutted against the surface of the release plate near the bottom of the sampling groove.

[0023] Beneficial effects: By sliding the sampling tube body into the sampling hole along the sliding groove using the limiting protrusion, and rotating the sampling tube to make the limiting protrusion slide into the limiting ring groove and rotate the end with the release plate to the top, it is easy for the soil depth collected by the sensor components to correspond with the data sampling depth, thereby completing the fixation of the sampling tube body; then, the release plate is removed, and all sensor components are ejected from the collection groove by the elastic force of the first elastic element to collect information on the soil at the current depth. In this way, soil information can be collected conveniently and with high accuracy.

[0024] Furthermore, a locking hole is provided at the end of the release plate near the opening of the sampling tube body, and a locking pin is threaded to the side wall of the sampling tube, with the locking pin passing through the locking hole.

[0025] Beneficial effect: The release plate is locked by the locking pin to prevent it from being removed in advance, thus allowing the sensor assembly to extend out of the acquisition slot ahead of time.

[0026] Furthermore, the sliding groove and the limiting ring groove have the same width, and the width of both the sliding groove and the limiting ring groove is 5mm larger than the width of the limiting protrusion.

[0027] Beneficial effects: The sliding groove and the limiting ring groove provide 2.5mm of sliding space on the left and right sides for the limiting protrusion, which prevents the sampling tube from getting stuck when it is installed, and also prevents the sampling tube from being too loose and unstable.

[0028] Furthermore, the sensor assembly includes an acid-base sensor, a soil compaction tester, and a moisture, salinity, and temperature measuring instrument. The acid-base sensor, soil compaction tester, and moisture, salinity, and temperature measuring instrument are used to detect the soil pH value, soil compaction, soil moisture, soil salinity, and soil temperature, respectively.

[0029] Beneficial effects: Multiple information about the soil is collected through sensor components.

[0030] Furthermore, in step 4, the data acquisition device includes a mounting plate that slides with the inner side wall of the sampling tube body. An image acquisition device is installed at the bottom of the mounting plate, and a soil sampling device is installed inside the mounting plate. A locking groove is opened on the side wall of the mounting plate, and a second elastic element is fixedly connected to the bottom of the locking groove. A locking ball that cooperates with the limiting groove is fixedly connected to the end of the second elastic element away from the locking groove.

[0031] Beneficial effects: By moving the mounting plate within the sampling tube body, when it reaches a data sampling depth, the locking ball springs into the locking groove, thereby temporarily locking the mounting plate. After starting the soil sampling device to complete soil collection at one data sampling depth, repeating the above steps can complete soil collection at all data sampling depths, facilitating accurate soil collection at different depths. By repeating the above steps to temporarily lock the mounting plate at each data sampling depth, image acquisition at each data sampling depth can be achieved.

[0032] Furthermore, a vertical groove is provided on the top of the mounting plate, and a cylindrical fixing cavity is provided inside the mounting plate, with the vertical groove communicating with the fixing cavity.

[0033] Beneficial effects: Using a T-shaped push rod, one end of the push rod is inserted into the fixed cavity through the vertical groove and rotates at a certain angle within the fixed cavity, thereby enabling the displacement of the mounting plate and allowing for easy disassembly after locking the mounting plate inside the sampling tube body.

[0034] Furthermore, an electromagnet assembly is installed between the mounting plate and the bottom of the collection slot.

[0035] Beneficial effect: The sensor assembly is retracted using an electromagnet assembly, making it easier to remove the sampling tube.

[0036] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] Figure 1 This is a flowchart of an embodiment of the method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to the present invention;

[0038] Figure 2 This is a cross-sectional view of a sampling hole in an embodiment of the method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to the present invention.

[0039] Figure 3 This is a cross-sectional view of a sampling tube in an embodiment of the method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to the present invention.

[0040] Figure 4 This is a partial schematic diagram (A) of an embodiment of the method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to the present invention.

[0041] Figure 5 This is a top view of the mounting plate of an embodiment of the method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to the present invention. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0045] The following detailed description illustrates the specific implementation method:

[0046] The reference numerals in the accompanying drawings include: sampling hole 1, sampling tube 2, sampling port 3, limiting groove 4, limiting protrusion 5, acquisition groove 6, locking pin 7, release plate 8, first elastic element 9, electromagnet assembly 10, sensor assembly 11, mounting plate 12, mounting disc 13, fixing cavity 14, vertical groove 15, image acquisition device 16, locking groove 17, second elastic element 18, locking ball 19, and protective cover 20.

[0047] Implementation, for example, attached Figure 1-5 The following method is shown: A method for determining the response characteristics of Masson pine root growth dynamics to soil changes, comprising the following steps:

[0048] Step 1: Select different soil areas and use ultrasonic sensors to detect the approximate location of the roots of Masson pine in different soil areas. Based on the approximate location of the Masson pine roots and the soil area and type to be sampled, formulate sampling routes and several data sampling depths around the Masson pine in each different area. In this embodiment, five data sampling depths are selected for data sampling.

[0049] Step 2: Drill sampling holes 1 sequentially along the sampling route, and open sliding grooves and several limiting ring grooves perpendicular to the sliding grooves on the inner side wall of sampling holes 1 along their length direction. The depth of the limiting ring grooves corresponds one-to-one with the data sampling depth.

[0050] Step 3: Install the sampling tube 2 into the sampling hole 1 along the sliding groove, slide the limiting protrusion 5 on the sampling tube 2 into the limiting sliding groove to fix the sampling tube 2 in the sampling hole 1, and release the collection sensor group into the soil by pulling the release plate 8 that is slidably fitted in the side wall of the sampling tube 2. The sensor group collects soil information at each data sampling depth in real time.

[0051] After the sampling tube 2 is fixed inside the sampling hole 1, the sampling tube 2 extends 20cm above the ground, and the open end of the sampling tube 2 is sealed. A protective cover 20 is installed on the sampling tube 2 extending above the ground. The protective cover 20 is preferably an opaque protective cover 20 to avoid external light affecting the internal information collection effect.

[0052] Specifically, the sampling tube 2 includes a sampling tube body that is open at one end and closed at the other. Five limiting protrusions 5 corresponding to the data sampling depth are formed on the outer wall of the sampling tube body. Five sampling ports 3 corresponding to the data sampling depth are formed on the side wall of the sampling tube body. Five limiting grooves 4 corresponding to the data sampling depth are formed on the inner wall of the sampling tube body. The limiting protrusions 5, sampling ports 3, and limiting grooves 4 corresponding to the same data sampling depth are located at the same height relative to the sampling tube body.

[0053] A sampling groove 6 is provided inside the side wall of the sampling tube 2. A first elastic element 9 is fixedly connected to the bottom of the sampling groove 6. In this embodiment, the first elastic element 9 is a spring. A mounting plate 12 is fixedly connected to the end of the first elastic element 9 away from the bottom of the sampling groove 6. A sensor assembly 11 is fixedly connected to the mounting plate 12. The sensor assembly 11 includes an acid-base sensor, a soil compaction tester, and a moisture, salinity, and temperature measuring instrument. The acid-base sensor, soil compaction tester, and moisture, salinity, and temperature measuring instrument are used to detect the soil pH value, soil compaction, soil moisture, soil salinity, and soil temperature, respectively. If the user has more data needs regarding soil information, more types of sensors can be set up for sudden information collection.

[0054] A release plate 8 is slidably fitted inside the side wall of the sampling tube 2. The release plate 8 passes through all the collection slots 6, and in the initial state, the collection end of the sensor assembly 11 is abutted against the bottom surface of the release plate 8 near the collection slot 6. A locking hole is provided at the end of the release plate 8 near the opening of the sampling tube 2. A locking pin 7 is threadedly connected to the side wall of the sampling tube 2, and the locking pin 7 passes through the locking hole.

[0055] In use, the limiting protrusion 5 slides the sampling tube 2 body into the sampling hole 1 along the sliding groove, and the sampling tube 2 is rotated so that the limiting protrusion 5 slides into the limiting ring groove and the end with the release plate 8 is rotated to the top, so that the soil depth collected by the sensor assembly 11 corresponds to the data sampling depth, thereby completing the fixation of the sampling tube 2 body; then the release plate 8 is removed, and all sensor assemblies 11 are ejected from the collection groove 6 by the elastic force of the first elastic element 9 to collect information on the soil at the depth.

[0056] To facilitate the installation of sampling tube 2 and ensure its stability after installation, the widths of the sliding groove and the limiting ring groove are set to the same size, and the widths of both the sliding groove and the limiting ring groove are 5mm larger than the width of the limiting protrusion 5.

[0057] To facilitate the removal of the sampling tube 2 from the sampling hole 1, an electromagnet assembly 10 is fixedly connected between the mounting plate 12 and the bottom of the collection slot 6.

[0058] When in use, the electromagnet is energized to retract the mounting plate 12 and the sensor assembly 11 on the mounting plate 12 into the collection slot 6, and the release plate 8 is inserted into the side wall of the sampling tube 2, so that the sampling tube 2 can be easily removed from the sampling hole 1.

[0059] Step 4: Collect soil samples at each data sampling depth using data acquisition equipment, and then install data acquisition equipment at each data sampling depth to collect real-time image information of the Masson pine root system.

[0060] The data acquisition device includes a mounting plate 13 that slides with the inner side wall of the sampling tube 2. An image acquisition device 16 is installed at the bottom of the mounting plate 13. A soil sampling device is installed inside the mounting plate 13. The soil sampling device in this embodiment adopts a portable soil sampler for land quality survey described in patent document CN215218139U. It is small in size and can easily be extended and retracted to collect soil. A locking groove 17 is provided on the side wall of the mounting plate 13. A second elastic element 18 is fixedly connected to the bottom of the locking groove 17. In this embodiment, the second elastic element 18 is a spring. A locking ball 19 that cooperates with the limiting groove 4 is fixedly connected to the end of the second elastic element 18 away from the locking groove 17.

[0061] To facilitate the installation of the data acquisition equipment, a vertical groove 15 is provided on the top of the mounting plate 13, and a cylindrical fixing cavity 14 is provided inside the mounting plate 13. The vertical groove 15 is connected to the fixing cavity 14. By using a T-shaped push rod to extend into the fixing cavity 14 through the vertical groove 15, the mounting plate 13 can be moved and can be easily disassembled.

[0062] Step 5: Obtain real-time soil information and soil detection information collected by the sensor sampling group, and combine them with real-time image information of Masson pine root system and different selected soil areas to determine the response characteristics of Masson pine root growth dynamics to soil changes.

[0063] Furthermore, in step 1, when establishing the sampling route around the Masson pine, the location of the pine, soil type, and root growth direction relative to the ground slope are considered. The depth of the highest point of the limiting ring groove corresponds one-to-one with the data sampling depth. The preferred sampling route is similar to or the same as the growth angle of the pine's main root system. Secondly, based on the location of the pine and the soil type, for looser soil, the sampling route should be designated at a location where the sampling tube 2 can be securely fixed. This ensures that the sampling tube 2 can be effectively fixed for long-term data collection.

[0064] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific structures and / or characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A method for determining the response characteristics of Masson pine root growth dynamics to soil changes, characterized in that: Includes the following steps: Step 1: Select different soil areas and use ultrasonic sensors to detect the approximate location of the roots of Masson pine in different soil areas. Based on the approximate location of the roots of Masson pine and the soil area and type to be sampled, formulate sampling routes and several data sampling depths around Masson pine in different areas. Step 2: Drill sampling holes sequentially along the sampling route, and open sliding grooves and several limiting ring grooves perpendicular to the sliding grooves on the inner sidewall of the sampling holes along their length. The depth of the limiting ring grooves corresponds one-to-one with the data sampling depth. Step 3: Install the sampling tube into the sampling hole along the sliding groove, and slide the limiting protrusion on the sampling tube into the limiting ring groove to fix the sampling tube in the sampling hole; In step 3, the sampling tube includes a sampling tube body with one end open and the other end closed. The side wall of the sampling tube body has several sampling ports corresponding to the data sampling depth, and the inner side wall of the sampling tube body has several limiting grooves corresponding to the data sampling depth. A collection groove is formed inside the side wall of the sampling tube. A first elastic element is fixedly connected to the bottom of the collection groove. An installation plate is fixedly connected to the end of the first elastic element away from the bottom of the collection groove. A sensor assembly is fixedly connected to the installation plate. A release plate is slidably fitted inside the side wall of the sampling tube body. By pulling the release plate, the sensor assembly is ejected from the collection groove and released into the soil under the action of the first elastic element. The sensor assembly collects soil information at each data sampling depth in real time. Step 4: Using an installation plate that slides with the inner side wall of the sampling tube, soil and pine root image information are collected in real time at each data sampling depth. The bottom of the installation plate is equipped with an image acquisition device, and the inside is equipped with a soil sampling device. The installation plate uses a locking ball on its side wall to cooperate with a limiting groove on the inner wall of the sampling tube that corresponds to the data sampling depth, so as to accurately position at each data sampling depth. Step 5: Obtain real-time soil information and soil detection information collected by the sensor sampling group, and combine them with real-time image information of Masson pine root system and different selected soil areas to determine the response characteristics of Masson pine root growth dynamics to soil changes. The method further includes: after the data collection is completed, retracting the sensor assembly into the data collection slot using an electromagnet assembly positioned between the mounting plate and the bottom of the data collection slot, so that the sampling tube can be removed for reuse.

2. The method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to claim 1, characterized in that: In step 1, when determining the sampling route around the Masson pine, the depth of the highest point of each limiting ring groove corresponds to the sampling depth of each data point, based on the location of the Masson pine, soil type, root growth direction of the Masson pine, and ground inclination.

3. The method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to claim 2, characterized in that: In step 3, after fixing the sampling tube inside the sampling hole, the sampling tube extends at least 20cm above the ground, and the open end of the sampling tube is sealed. A protective cover is then installed on the sampling tube extending above the ground.

4. The method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to claim 3, characterized in that: The outer wall of the sampling tube body has several limiting protrusions corresponding to the data sampling depth; the release plate passes through all the collection slots, and in the initial state, the collection end of the sensor assembly is abutted against the surface of the release plate near the bottom of the collection slot.

5. The method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to claim 4, characterized in that: A locking hole is provided at the end of the release plate near the opening of the sampling tube body, and a locking pin is threaded to the side wall of the sampling tube, with the locking pin passing through the locking hole.

6. The method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to claim 5, characterized in that: The sliding groove and the limiting ring groove have the same width, and the width of both the sliding groove and the limiting ring groove is 5mm larger than the width of the limiting protrusion.

7. The method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to claim 6, characterized in that: The sensor assembly includes an acid-base sensor, a soil compaction tester, and a moisture, salinity, and temperature measuring instrument. The acid-base sensor, soil compaction tester, and moisture, salinity, and temperature measuring instrument are used to detect the soil pH value, soil compaction, soil moisture, soil salinity, and soil temperature, respectively.

8. The method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to claim 7, characterized in that: In step 4, a locking groove is provided on the side wall of the installation plate, a second elastic element is fixedly connected to the bottom of the locking groove, and a locking ball is fixedly connected to the end of the second elastic element away from the locking groove.

9. The method for determining the response characteristics of Masson pine root growth dynamics to soil changes according to claim 8, characterized in that: The top of the mounting plate has a vertical groove, and the inside of the mounting plate has a cylindrical fixing cavity, with the vertical groove and the fixing cavity connected.

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