Crop root zone soil sampling device

Abstract

The utility model relates to a crop root zone soil sampling device which comprises a sampling column and a sampler, the sampling column can be unfolded or buckled, and the sampler is coaxially sleeved on the sampling column and can ascend or descend along the length direction of the sampling column; the sampler comprises a sampling disc and a driving arm, and the driving arm is fixed on the sampling disc; at least two mounting grooves are formed along the radial direction of the sampling disc; the sampling device further comprises a sampling tube; the sampling tube is detachably arranged on the mounting groove; the problems that subsequent growth is easily affected after plant root zone soil sampling, and sampling of the same crop in different periods is difficult to achieve are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sampling, in particular to a device for sampling soil in the root zone of crops. Background Art

[0002] In agricultural scientific research, the individual differences during the growth process of crops are significant, which prompts researchers to deeply explore the soil environment to understand the underlying mechanisms. As a key means of evaluating soil fertility, nutrient distribution, and microbial community structure, soil sampling plays an irreplaceable role in revealing differences in crop root distribution, growth rate, nutrient absorption capacity, etc. However, these differences, combined with the heterogeneity of fertilization management, jointly shape the complexity of the root zone soil environment, making the nutrient transport and spatial distribution of microorganisms exhibit variable and fine characteristics.

[0003] Currently, in the prior art, the sampling method for the soil in the root zone of crops often involves using tools such as shovels or hoes to dig the soil at the bottom of the whole plant. This way of digging not only directly damages the growth state of the crops but also may affect their subsequent growth and development and yield, thus limiting the possibility of continuous sampling and long-term monitoring, and greatly restricting the ability of researchers to continuously sample and observe the same crop. Because once the crops are damaged, their subsequent growth state and response mechanism will change significantly, making it impossible to comprehensively and dynamically reveal the laws of nutrient transport and microbial changes in the root zone soil of crops.

[0004] Therefore, in view of this, the inventor proposes a device for sampling soil in the root zone of crops to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for sampling soil in the root zone of crops to solve the problems that it is easy to affect the subsequent growth after sampling the soil in the root zone of plants and it is difficult to achieve sampling of the same crop at different times.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A device for sampling soil in the root zone of crops includes a sampling column and a sampler. The sampling column can be unfolded or buckled. The sampler is coaxially sleeved on the sampling column and can move up or down along the length direction of the sampling column;

[0008] The sampler includes a sampling disc and a driving arm. The driving arm is fixed on the sampling disc; at least two mounting grooves are arranged radially along the sampling disc;

[0009] It further includes a sampling tube, and the sampling tube is detachably arranged on the mounting groove.

[0010] According to the above technical solution, the sampling column can be unfolded. When unfolded, the sampling column can be conveniently sleeved on the plant, which will not damage the growth of crops such as plants (such as rapeseed), realizing non-destructive sampling. When the sampling column is closed, the sampler is sleeved on the sampling column, which can avoid accidental damage to the plant crops during the sampling process.

[0011] Further, the sampling tray is of a circular structure. The mounting grooves formed in the sampling tray include a near-root area, a middle-root area, and a far-root area, which are arranged in sequence from the center of the circle outward.

[0012] According to the above technical solution, by setting the near-root area, the middle-root area, and the far-root area on the sampling tray and arranging them in sequence from the center of the circle outward, it can ensure equidistant multi-point sampling on the soil with roots at different distances. This design can more accurately reflect the properties and nutrient distributions of the soil in different areas around the roots, reducing sampling errors; the form of dividing the mounting grooves into multiple root areas can install multiple sampling tubes at one time (each mounting groove can correspond to multiple sampling tubes), and soil samples in different areas around the roots can be collected simultaneously during one sampling process, greatly improving the sampling efficiency and helping to more deeply understand the interaction mechanism between the roots and the soil.

[0013] Further, a connecting member is provided between the sampling tray and the sampling tube, and the connecting member is used to fix the sampling tube on the sampling tray.

[0014] Further, a plurality of anti-slip nails are provided at the bottom of the sampling column.

[0015] According to the above technical solution, the design of the anti-slip nails can increase the friction force between the sampling column and the soil contact surface, ensure the stability of the sampling column during the sampling process, prevent sliding or tipping caused by wet soil or improper operation, thereby improving the accuracy and safety of sampling.

[0016] Further, a driving unit is further included, and the driving unit is detachably mounted on the sampling column.

[0017] Further, the driving unit includes two sliding structures and a motor disposed between the two sliding structures;

[0018] The sliding structure includes a bracket, a sliding plate slidably connected to the bracket, and a screw rod rotatably connected to the bracket. The screw rod is threadedly connected to the sliding plate.

[0019] According to the above technical solution, the driving unit is detachably mounted on the sampling column, facilitating installation or disassembly according to different sampling requirements. The driving unit includes two sliding structures and a motor disposed between the two sliding structures. Each sliding structure consists of a bracket, a sliding plate, and a screw. The sliding plate is threadedly connected to the screw, and the screw is rotatably connected to the bracket. When the motor is started, it drives the screw to rotate. The rotation of the screw causes the sliding plate to slide on the bracket through the threaded connection. The two sliding structures work synchronously, driving the sampler to perform soil sampling according to a preset trajectory and depth.

[0020] Furthermore, a connecting arm is provided on the sliding plate, and the connecting arm is detachably connected to the driving arm.

[0021] According to the above technical solution, the connecting arm provided on the sliding plate is connected to the driving arm by a detachable means (such as bolts, buckles, etc.), making the connection between the connecting arm and the driving arm both firm and flexible, and can be quickly connected or separated as needed. When the motor drives the sliding plate to slide on the bracket through the screw, the connecting arm moves together with the sliding plate. Since the connecting arm is connected to the driving arm, the driving arm converts the movement of the sliding plate into an operation on the sampler, such as pushing the sampler into the soil or pulling it out of the soil. During the entire sampling process, the connecting arm serves as an intermediate force-transmitting component, ensuring that the power of the driving arm can be accurately and effectively transmitted to the sampler to achieve soil sampling.

[0022] Furthermore, scales are provided on each of the mounting grooves.

[0023] Furthermore, along the length direction of the sampling column, scales are provided on the sampling column.

[0024] According to the above technical solution, the scales on the mounting grooves help researchers accurately control the position of the mounting plate on the sampling column, ensuring that each sampling can be carried out at preset equidistant points, reducing human error. The scales on the sampling column allow researchers to accurately control the sampling depth when performing soil sampling, facilitating the study of soil properties and nutrients at different depths.

[0025] Multi-point equidistant sampling can be more easily achieved, thereby increasing the repeatability and consistency of sampling and improving the accuracy of sampling results.

[0026] Furthermore, the connecting piece is a bolt, and internal threads are provided at the top of the sampling tube. The bolt passes through the mounting groove and is threadedly connected to the sampling tube.

[0027] The beneficial effects of the present utility model:

[0028] The design that the sampling column can be unfolded or buckled allows the device to sample without damaging the growth of the plant, which is convenient to be sleeved on the plant to achieve non-destructive sampling, facilitating subsequent research on frequently monitoring the root growth and soil environment changes. The near-root zone, middle-root zone and far-root zone are set on the sampling plate and arranged in sequence from the center of the circle outwards, so that soil sampling can be evenly carried out at different root positions of the plant without damaging the plant; by installing sampling tubes in different root zones, multiple sampling tubes can be installed at one time in each installation groove, and soil samples in different areas around the root system can be collected simultaneously during one sampling process, greatly improving the sampling efficiency. Understanding equidistant multi-point sampling on the soil at different distances from the root system is convenient to accurately reflect the properties and nutrient distributions of the soil in different areas around the root system and reduce sampling errors.

[0029] Other advantages, objectives and features of the present application will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present application. The objectives and other advantages of the present application can be achieved and obtained through the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the soil sampling device for crop root zones of the present utility model;

[0031] Figure 2 It is a schematic diagram of the driving unit structure of the soil sampling device for crop root zones of the present utility model;

[0032] Figure 3 It is a schematic diagram of the structure of the sampling column and sampler of the soil sampling device for crop root zones of the present utility model;

[0033] Figure 4 In the soil sampling device for crop root zones of the present utility model Figure 3 is a schematic diagram of the structure of part A;

[0034] Figure 5 It is a schematic diagram of the sampling column structure of the soil sampling device for crop root zones of the present utility model;

[0035] Figure 6 It is a schematic diagram of the sampler structure of the soil sampling device for crop root zones of the present utility model;

[0036] Figure 7 It is a schematic diagram of the structure of an installation tube in the soil sampling device for crop root zones of the present utility model;

[0037] Figure 8 It is a schematic diagram of the structure of another installation tube in the soil sampling device for crop root zones of the present utility model;

[0038] Figure 9 This is a schematic plan view of the sampling tray in the soil sampling device for the root zone of crops of the present utility model.

[0039] Among them, there are sampling column 1, sampler 2, sampling tray 21, driving arm 22, installation groove 23, sampling tube 3, connecting piece 4, anti-slip nail 5, driving unit 6, support 61, sliding plate 62, screw 63, connecting arm 64, motor 65, near root zone a, middle root zone b, and far root zone c. Specific embodiments

[0040] The following will describe the embodiments of the present utility model with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for illustrating the present utility model, rather than for limiting the protection scope of the present utility model.

[0041] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0042] This embodiment proposes a soil sampling device for the root zone of crops, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 . It includes a sampling column 1 and a sampler 2. The sampling column 1 can be unfolded or buckled. When the sampling column 1 is in the buckled state, the sampler 2 is coaxially sleeved on the sampling column 1 and can move up or down along the length direction of the sampling column 1 (i.e., the up and down direction in Figure 3 ). In this embodiment, the sampling column 1 can be unfolded. When unfolded, the sampling column 1 can be conveniently sleeved on the plant, so as not to damage the growth of plants and other crops, facilitating non-destructive sampling.

[0043] In this embodiment, the plant is preferably rapeseed. However, it can be understood that this device is not only applied to the root sampling of rapeseed, but also can be applied to the root sampling of other plants, such as sesame roots, sorghum roots, corn roots, etc.

[0044] When the sampling column 1 is buckled, the sampler 2 is sleeved on the sampling column 1, which can avoid accidental damage to the plant crops caused by the up and down movement of the sampler 2 during the soil sampling process of the plant root zone.

[0045] As shown inFigure 6 As shown, the sampler 2 includes a sampling tray 21 and a driving arm 22, and the driving arm 22 is fixed on the sampling tray 21; at least two mounting grooves 23 are arranged along the radial direction of the sampling tray 21; as Figure 3 and Figure 4 shown, this embodiment further includes a sampling tube 3, and the sampling tube 3 is detachably arranged on the mounting groove 23. Further, the sampling tray 21 and the sampling tube 3 are connected by a connecting member 4, and the connecting member 4 is used to fix the sampling tube 3 on the sampling tray 21. As an exemplary implementation manner, the connecting member 4 of this embodiment is a bolt, and an internal thread is provided at the top of the sampling tube 3, and the bolt passes through the mounting groove 23 and is threadedly connected to the sampling tube 3.

[0046] In this embodiment, the shape of the sampling tube 3 can adopt a long straight tube structure (as Figure 4 shown in 3a), a short cylindrical structure (as Figure 7 shown in 3b) and a semi-open structure (as Figure 8 shown in 3c).

[0047] As Figure 6 shown, in this embodiment, preferably, the number of the mounting grooves 23 is three, and the three mounting grooves 23 are evenly spaced along the circumferential direction of the sampling tray 21; scales are provided on each mounting groove 23, and setting the scales on the mounting grooves 23 can help researchers accurately control the position of the sampling tube 3 on the mounting plate. When sampling the plant roots, record the position of the sampling tube 3 on the mounting plate each time to ensure that each sampling can be carried out at the preset equidistant points, so as to facilitate subsequent analysis and research of the plants.

[0048] As a preferred implementation manner, as Figure 9 shown, the sampling tray 21 is a circular structure, and the mounting grooves 23 opened on the sampling tray 21 include a near-root zone a, a middle-root zone b and a far-root zone c. The near-root zone a, the middle-root zone b and the far-root zone c are arranged in sequence from the center of the circle outwards, and the sampling tube 3 can be installed at any position in the near-root zone a, the middle-root zone b and the far-root zone c.

[0049] In use, the sampling tube 3 can be installed alone in the near-root zone a of each mounting groove 23, or the sampling tube 3 can be installed alone in the middle-root zone b or the far-root zone c of each mounting groove 23, or the sampling tube 3 can be installed respectively in the near-root zone a, the middle-root zone b and the far-root zone c of each mounting groove 23 at the same time. As an exemplary implementation manner, taking Figure 9 as an example, when the sampling tubes 3 are installed respectively in the near-root zone a, the middle-root zone b and the far-root zone c of each mounting groove 23, a total of nine sampling tubes 3 can be installed in this embodiment; of course, it can be understood that the number of the installed sampling tubes 3 depends on the number of the mounting grooves 23, and the number of the installed sampling tubes 3 in different mounting grooves 23 is also different.

[0050] According to the above technical solution, by setting the near-root zone a, the middle-root zone b, and the far-root zone c on the sampling plate 21 and arranging them in sequence from the center to the outside, it can ensure equidistant multi-point sampling on the soil with different distances from the roots. This design can more accurately reflect the properties and nutrient distribution of the rhizosphere soil in different regions around the roots, reducing sampling errors; the installation grooves 23 are divided into multiple root zones, enabling multiple sampling tubes 3 to be installed at one time (each installation groove 23 can correspond to multiple sampling tubes 3), and soil samples from different regions around the roots can be collected simultaneously during one sampling process, without the need to separately sample each soil, greatly improving the sampling efficiency and accuracy, and helping to more deeply understand the interaction mechanism between the roots and the soil.

[0051] As a preferred embodiment, a number of anti-slip nails 5 are provided at the bottom of the sampling column 1. The design of the anti-slip nails 5 can increase the insertion into the soil and enhance the stability of the contact surface between the sampling column 1 and the soil, ensuring the stability of the sampling column 1 during the sampling process and preventing sliding or tipping caused by wet soil or improper operation, thereby improving the accuracy and safety of sampling.

[0052] As a preferred embodiment, as Figure 2 shown, it further includes a driving unit 6, and the driving unit 6 is detachably installed on the sampling column 1.

[0053] Furthermore, the driving unit 6 includes two sliding structures and a motor 65 arranged between the two sliding structures; the sliding structure includes a bracket 61, a slide plate 62 slidably connected to the bracket 61, and a screw rod 63 rotatably connected to the bracket 61, and the screw rod 63 is threadedly connected to the slide plate 62. The driving unit 6 is detachably installed on the sampling column 1, facilitating installation or disassembly according to different sampling requirements. The sampler 2 can be directly sleeved on the sampling column 1 for use, or the driving unit 6 can be installed on the sampling column 1 for use. When the driving unit 6 is installed on the sampling column 1, the driving unit 6 can drive the sampler 2 to descend to achieve automatic sampling, without the need for staff to push, saving time and effort.

[0054] Specifically, the driving unit 6 includes two sliding structures and a motor 65 disposed between the two sliding structures. The sliding plate 62 is threadedly connected to the screw rod 63, and the screw rod 63 is rotatably connected to the bracket 61. When the motor 65 is started, it can drive the screw rod 63 to rotate (specifically, by means of belt drive, gear meshing drive, etc.). The rotation of the screw rod 63 causes the sliding plate 62 to slide on the bracket 61. A connecting arm 64 is provided on the sliding plate 62, and the connecting arm 64 is detachably connected to the driving arm 22. The connecting arm 64 provided on the sliding plate 62 is connected to the driving arm 22 by a detachable means (such as bolts, buckles, etc.), and can be quickly connected or separated as needed. When the motor 65 drives the sliding plate 62 to slide on the bracket 61 through the screw rod 63, the connecting arm 64 moves together with the sliding plate 62. Since the connecting arm 64 is connected to the driving arm 22, the driving arm 22 converts the movement of the sliding plate 62 into an operation on the sampler 2, such as pushing the sampling tube 3 mounted on the sampler 2 into the soil or pulling it out of the soil. During the entire sampling process, the connecting arm 64 serves as an intermediate force-transmitting member to ensure that the power of the driving arm 22 can be accurately and effectively transmitted to the sampler 2, realizing soil sampling with high automation, compact structure, and strong practicability.

[0055] In this embodiment, the motor 65 is preferably a forward and reverse motor 65, that is, it can achieve forward or reverse rotation.

[0056] As a preferred embodiment, along the length direction of the sampling column 1 (that is, Figure 5 the vertical direction), scales are provided on the sampling column 1. The scales on the sampling column 1 allow researchers to accurately control the sampling depth when conducting soil sampling, facilitating the study of the properties and nutrients of soils at different depths.

[0057] Compared with the prior art, the design of the sampling column 1 of the present utility model that can be unfolded or buckled allows the device to perform sampling without damaging the growth of plants, facilitating sleeving on the plants to achieve non-destructive sampling, facilitating subsequent frequent monitoring of root growth and soil environment changes. The near-root zone a, middle-root zone b, and far-root zone c are provided on the sampling tray 21 and are arranged in sequence from the center outwards, enabling uniform soil sampling at different root positions of the plant without damaging the plant. By installing sampling tubes 3 in different root zones, multiple sampling tubes 3 can be installed in each installation groove 23 at one time, and soil samples from different regions around the roots can be collected simultaneously during one sampling process, greatly improving the sampling efficiency. Understanding equidistant multi-point sampling on the soil at different distances from the roots facilitates accurately reflecting the properties and nutrient distributions of the soils in different regions around the roots. There is no need to use tools such as shovels or hoes to excavate the soil in the root zone at the bottom of the whole plant, which will not affect the subsequent growth and yield of the plant, facilitating researchers to conduct continuous sampling and observation studies on the same crop, with a compact structure and strong practicability.

[0058] The above embodiments are only preferred embodiments given to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art in the technical field on the basis of the present utility model are all within the protection scope of the present utility model.

Claims

1. A crop root zone soil sampling device, characterized in that: include: A sampling column (1) and a sampler (2), wherein the sampling column (1) can be unfolded or closed, and the sampler (2) is coaxially sleeved on the sampling column (1) and can rise or fall along the length direction of the sampling column (1); The sampler (2) comprises a sampling disk (21) and a driving arm (22), wherein the driving arm (22) is fixed on the sampling disk (21); at least two mounting grooves (23) are arranged along the radial direction of the sampling disk (21); It also comprises a sampling tube (3), wherein the sampling tube (3) is detachably arranged on the mounting groove (23).

2. The crop root zone soil sampling device according to claim 1, characterized in that: The sampling plate (21) is a circular structure. The mounting groove (23) provided on the sampling plate (21) comprises a near-root area (a), a middle-root area (b) and a far-root area (c). The near-root area (a), the middle-root area (b) and the far-root area (c) are arranged in sequence outward from the center of the circle.

3. The crop root zone soil sampling device according to claim 1, characterized in that: A connecting piece (4) is provided between the sampling plate (21) and the sampling tube (3), and the connecting piece (4) is used to fix the sampling tube (3) on the sampling plate (21).

4. The crop root zone soil sampling device according to claim 1, characterized in that: A plurality of anti-slip spikes (5) are provided at the bottom of the sampling column (1).

5. The crop root zone soil sampling device according to claim 1, characterized in that: It also comprises a driving unit (6), wherein the driving unit (6) is detachably mounted on the sampling column (1).

6. The crop root zone soil sampling device according to claim 5, characterized in that: The driving unit (6) comprises two sliding structures and a motor (65) arranged between the two sliding structures; The sliding structure comprises a bracket (61), a slide plate (62) slidably connected to the bracket (61), and a screw rod (63) rotatably connected to the bracket (61), wherein the screw rod (63) is threadedly connected to the slide plate (62).

7. The crop root zone soil sampling device according to claim 6, characterized in that: The slide plate (62) is provided with a connecting arm (64), and the connecting arm (64) is detachably connected to the driving arm (22).

8. The crop root zone soil sampling device according to claim 7, characterized in that: Each of the mounting grooves (23) is provided with a scale.

9. The crop root zone soil sampling device according to claim 1, characterized in that: The sampling column (1) is provided with scales along the length direction of the sampling column (1).

10. The crop root zone soil sampling device according to claim 3, characterized in that: The connecting member (4) is a bolt, an internal thread is provided on the top of the sampling tube (3), and the bolt passes through the mounting groove (23) and is threadedly connected to the sampling tube (3).

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