Plant rhizome tissue sampler

Abstract

The utility model discloses a plant rhizome tissue sampler, which belongs to the technical field of plant sampling, and comprises a mounting ring, a sampling barrel and a one-way limiting structure, the sampling barrel comprises a supporting ring and a barrel body, the supporting ring is in running fit with the mounting ring, the barrel body is provided with a notch II which is consistent with the notch I in size, and a plurality of guide blades for driving the barrel body to rotate are arranged in the barrel body; the one-way limiting structure is arranged between the mounting ring and the supporting ring, so that the supporting ring can only rotate in one direction relative to the mounting ring. According to the plant rhizome tissue sampler, the installation ring with the first notch is designed to be combined with the sampling barrel with the second notch, and the built-in inclined guide vane and the bottom pull rope are arranged, so that a sample containing a root system is conveniently and completely sleeved and taken out from the side face of a plant, the sampling process is greatly simplified, and the labor intensity and the time consumption are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of plant sampling, in particular to a plant root and stem tissue sampler. Background Art

[0002] Plant rhizome sampling is used to further investigate the interrelationships between plant growth, root density, and the soil environment. These studies contribute to diverse fields, including agricultural science, ecological research, and environmental monitoring, providing crucial data to guide effective planting and soil management strategies. Obtaining accurate rhizome samples is crucial for analyzing plant health, nutrient uptake, and interactions with microbial communities, making the development of effective sampling methods crucial.

[0003] When sampling plant rhizomes, the roots of the plant and the soil around them need to be dug out together. Existing plant rhizome sampling usually uses a shovel to directly dig out. Because the sample needs to be as complete as possible in the shape of a cube or cylinder, it is necessary to frequently switch the shovel's insertion position. Since the shovel cannot operate horizontally in the deep soil layer, when sampling, the soil column can often only be cut by prying the soil around the sample, resulting in an uneven bottom surface of the soil column sample. In addition, if a sampling tube is used for sampling, its diameter must be larger than the crown of the plant, which is often limited in actual operation, increasing the difficulty and inconvenience of sampling. Therefore, there is an urgent need to develop a more efficient and convenient rhizome sampling technology to improve the existing sampling process.

[0004] Therefore, we propose a plant rhizome tissue sampler to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that the sampling tube is restricted by the crown of the plant during operation, which increases the difficulty and inconvenience of sampling, and proposes a plant root and stem tissue sampler.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A plant root tissue sampler comprises a mounting ring, a sampling tube and a one-way limiting structure, wherein:

[0008] The mounting ring has a notch 1 for the root of the plant stem to pass through;

[0009] The sampling cylinder comprises a support ring and a cylinder body that rotates with the mounting ring. The cylinder body has a notch 2 that is the same size as the notch 1, and a plurality of guide vanes are provided in the cylinder body for driving the cylinder body to rotate.

[0010] The one-way limiting structure is arranged between the mounting ring and the support ring, so that the support ring can only rotate in one direction relative to the mounting ring.

[0011] Preferably, a grip is mounted on one end of the mounting ring away from the notch, and a pedal for applying force by stepping is fixedly mounted on the side wall of the mounting ring.

[0012] Preferably, the circumferential angle of the mounting ring is greater than 180°.

[0013] Preferably, an annular groove is provided on the inner wall of the mounting ring, and the supporting ring is adapted to the annular groove.

[0014] Preferably, the top surface of the support ring is provided with a plurality of rollers distributed at equal distances, and the rollers are against the inner top surface of the mounting ring.

[0015] Preferably, the guide vanes are arranged at the lower half of the cylinder, and the guide vanes are arranged in a spiral and inclined manner.

[0016] Preferably, the one-way limiting structure includes a plurality of elastic picks arranged in an inclined direction in the annular groove, and the outer peripheral surface of the support ring is provided with a plurality of wedge-shaped grooves whose inclined surfaces are consistent with the inclined direction of the elastic picks.

[0017] Preferably, it also includes a pull rope, a rope clamping groove is opened at the bottom of the cylinder, one end of the pull rope is fixed to one end of the rope clamping groove, and the pull rope is filled in the rope clamping groove until the other end of the rope clamping groove, and the other end of the pull rope passes through the cylinder and is connected to a traction ring.

[0018] To sum up, the technical effects and advantages of the utility model are as follows: the plant root tissue sampler, by designing a mounting ring with notch one combined with a sampling tube with notch two, as well as built-in inclined guide leaves and a bottom pull rope, realizes the convenient and complete insertion and removal of samples containing root systems from the side of the plant. Compared with the traditional method that requires multiple switching of the digging position, the notch design and the rotating sampling tube can be used to insert the sample from the side of the plant at one time, which greatly simplifies the sampling process and reduces labor intensity and time consumption.

[0019] The sampling tube automatically rotates under the action of the guide blade to achieve circular cutting, ensuring the regularity of the sampling shape (cylinder) while completely preserving the soil structure at the roots of the plant, which is conducive to subsequent research and analysis.

[0020] The design of Notch 1 and Notch 2 allows the sampling tube to be inserted from the side without having to exceed the crown of the plant, thereby increasing the flexibility of the sampling space and being suitable for plants of different sizes and growth environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic structural diagram of the mounting ring in the present utility model;

[0023] Figure 3 This is a schematic structural diagram of the sampling tube in the present utility model;

[0024] Figure 4 This is a schematic structural diagram of the one-way limiting structure in the present utility model;

[0025] Figure 5 for Figure 4 Enlarged view of part A;

[0026] Figure 6 This is a schematic diagram of the state change structure of the pull rope in the utility model.

[0027] In the figure: 1. Mounting ring; 11. Notch 1; 12. Grip; 13. Pedal; 14. Ring groove; 15. Elastic pick; 2. Sampling tube; 21. Support ring; 22. Cylinder body; 23. Notch 2; 24. Guide vane; 25. Roller; 26. Wedge groove; 27. Rope groove; 3. Pull rope; 31. Traction ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] Reference Figure 1-3 A plant root tissue sampler includes a mounting ring 1, a sampling tube 2 and a one-way limiting structure. When in use, the mounting ring 1 and the sampling tube 2 are horizontally inserted into the bottom of the plant stem so that the sampling tube 2 and the plant are in a coaxial state. Pressure is applied downward on the mounting ring 1 to insert the sampling tube 2 into the soil. Under the limiting action of the one-way limiting structure, the sampling tube 2 rotates when inserted downward to cut the inner ring of the soil. When taken out upward, the sampling tube 2 is limited and cannot rotate, and the soil column containing the complete root sample is taken out.

[0031] The mounting ring 1 has a gap 11 for the roots of the plant stems to pass through. When sampling, the sample including the root system can be conveniently and completely inserted and taken out directly from the side of the plant, allowing the sampling tube 2 to be no larger than the crown of the plant and only need to be inserted from the side, thereby improving the flexibility of the sampling space and being suitable for plants of different sizes and growth environments. A grip 12 is installed at the end of the mounting ring 1 away from the gap 11, which is convenient for the user to hold and operate, and a pedal 13 for stepping on and applying force is fixedly installed on the side wall of the mounting ring 1. By stepping on the pedal 13, force can be effectively applied to the mounting ring 1 to ensure that the sampling tube 2 is inserted into the soil.

[0032] The sampling tube 2 includes a support ring 21 and a cylinder 22 that rotate with the mounting ring 1. The bottom of the cylinder 22 is designed with an oblique angle to increase the pressure when the cylinder 22 is inserted into the soil, so that the cylinder 22 can be easily inserted into the soil. The cylinder 22 has a notch 23 that is the same size as the notch 11. When placing the mounting ring 1 and the sampling tube 2, the notch 11 and the notch 23 need to overlap, exposing a space for the plant to enter laterally. The circumferential angle of the mounting ring 1 is greater than 180°. In this embodiment, the circumferential angle of the mounting ring 1 is 270°, so the notch 11 and the circumferential angle are only 90°, ensuring that the mounting ring 1 and the support ring 21 will not be separated when they rotate. The cylinder 22 is provided with a plurality of guide blades 24 for driving the cylinder 22 to rotate. The guide blades 24 are provided in the lower half of the cylinder 22, and the guide blades 24 are spirally inclined. When the sampling cylinder 2 is vertically inserted into the soil, the force between the guide blades 24 and the soil drives the cylinder 22 to rotate, so that the cylinder 22 performs a circumcision on the soil around the plant to form a cylindrical soil column containing a complete root sample. Under the action of the one-way limiting structure, the support ring 21 cannot rotate in the opposite direction. When the sample is taken out upward, the guide blades 24 cannot move along the spiral path when inserted into the soil. Therefore, the axial resistance between the guide blades 24 and the soil facilitates the sampling cylinder 2 to take out the entire soil column.

[0033] Reference Figure 1-5 The inner wall of the mounting ring 1 is provided with an annular groove 14, and the support ring 21 is adapted to the annular groove 14. The annular groove 14 cooperates with the support ring 21 to axially limit the mounting ring 1 and the support ring 21, thereby ensuring the stability of the rotational connection between the mounting ring 1 and the support ring 21.

[0034] Reference Figure 2-3 The top surface of the support ring 21 is provided with a plurality of equally distributed rollers 25, which are against the inner top surface of the mounting ring 1. The rollers 25 can reduce the friction resistance between the mounting ring 1 and the support ring 21 and improve the flexibility of the rotation of the sampling tube 2.

[0035] Reference Figure 4-5The one-way limiting structure is arranged between the mounting ring 1 and the support ring 21, so that the support ring 21 can only rotate in one direction relative to the mounting ring 1. The one-way limiting structure includes a plurality of elastic paddles 15 arranged at an angle in the annular groove 14. The outer peripheral surface of the support ring 21 is provided with a plurality of wedge-shaped grooves 26 with inclined surfaces consistent with the inclined direction of the elastic paddles 15. When the sampling tube 2 is inserted into the soil, it is considered as positive rotation. During positive rotation, the elastic paddle 15 moves along the inclined surface of the wedge-shaped groove 26 toward the outside of the wedge-shaped groove 26. The elastic paddle 15 undergoes elastic deformation until it enters the next wedge-shaped groove 26 to recover. During reverse rotation, the end of the elastic paddle 15 abuts against the vertical surface of the wedge-shaped groove 26 to achieve limiting.

[0036] Reference Figure 1 and 6 The plant root tissue sampler also includes a pull rope 3. A rope groove 27 is provided at the bottom of the cylinder 22. One end of the pull rope 3 is fixed to one end of the rope groove 27, and the pull rope 3 is filled in the rope groove 27 until the other end of the rope groove 27. The other end of the pull rope 3 passes through the cylinder 22 and is connected to a traction ring 31. Before sampling, the pull rope 3 remains consistent with the cross-sectional shape of the sampling cylinder 2. After the sampling cylinder 2 is inserted into the soil, the pull rope 3 is pulled to tighten the two ends of the rope groove 27 as support points. The pull rope 3 is pulled out of the rope groove 27 and the bottom of the soil column of the sampling part is horizontally cut during the tightening process, thereby realizing the convenient and complete insertion and removal of samples containing the root system from the side of the plant.

[0037] Working principle:

[0038] Overlap the notch 11 and the notch 2 23 to expose a space for the plant to enter from the side, insert the mounting ring 1 and the sampling tube 2 horizontally into the bottom of the plant stem, so that the sampling tube 2 and the plant are in a coaxial state, and press the mounting ring 1 downward by stepping on the pedal 13 to insert the sampling tube 2 into the soil. When the sampling tube 2 is inserted vertically into the soil, the force between the guide blades 24 and the soil will drive the cylinder 22 to rotate, so that the cylinder 22 circumscribes the soil around the plant to form a cylindrical soil column containing the completed root sample. After the sampling tube 2 is inserted into the soil, the pull rope 3 is pulled so that the pull rope 3 is at both ends of the rope groove 27. The support point is tightened, and the pull rope 3 is pulled out of the rope groove 27. During the tightening process, the bottom of the soil column of the sampling part is horizontally cut, so that the sample containing the root system can be conveniently and completely inserted and removed from the side of the plant. Under the action of the one-way limiting structure, the support ring 21 cannot rotate in the opposite direction. When taking out the sample upward, the guide blade 24 cannot move along the spiral path when inserted into the soil. Therefore, the axial resistance between the guide blade 24 and the soil makes it easier for the sampling tube 2 to take out the entire soil column. The gap 11 and the gap 2 23 can be adjusted to overlap, and the soil is scraped off from the position of the gap 23 to obtain a complete plant root sample.

Claims

1. A plant rhizome tissue sampler, characterized in that: It comprises a mounting ring (1), a sampling tube (2) and a one-way limiting structure, wherein: The mounting ring (1) has a notch (11) for the root of the plant stem to pass through; The sampling cylinder (2) comprises a support ring (21) and a cylinder (22) that is rotatably matched with the mounting ring (1); the cylinder (22) has a second notch (23) that is the same size as the first notch (11); and a plurality of guide vanes (24) are provided in the cylinder (22) for driving the cylinder (22) to rotate. The one-way limiting structure is arranged between the mounting ring (1) and the support ring (21), so that the support ring (21) can only rotate in one direction relative to the mounting ring (1).

2. A plant rhizome tissue sampler according to claim 1, characterized in that: A gripping rod (12) is mounted on one end of the mounting ring (1) away from the notch (11), and a pedal (13) for applying force by stepping is fixedly mounted on the side wall of the mounting ring (1).

3. A plant rhizome tissue sampler according to claim 1, characterized in that: The circumferential angle of the mounting ring (1) is greater than 180°.

4. A plant rhizome tissue sampler according to claim 1, characterized in that: The inner wall of the mounting ring (1) is provided with an annular groove (14), and the supporting ring (21) is adapted to the annular groove (14).

5. A plant rhizome tissue sampler according to claim 1, characterized in that: The top surface of the support ring (21) is provided with a plurality of rollers (25) distributed at equal intervals, and the rollers (25) are in contact with the inner top surface of the mounting ring (1).

6. A plant rhizome tissue sampler according to claim 1, characterized in that: The guide vanes (24) are arranged at the lower half of the cylinder (22), and the guide vanes (24) are arranged in a spirally inclined manner.

7. A plant rhizome tissue sampler according to claim 4, characterized in that: The one-way limiting structure comprises a plurality of tilted elastic picks (15) arranged in the annular groove (14), and the outer peripheral surface of the support ring (21) is provided with a plurality of wedge-shaped grooves (26) whose tilted surfaces are consistent with the tilt direction of the elastic picks (15).

8. A plant rhizome tissue sampler according to claim 1, characterized in that: The device further comprises a drawstring (3), wherein a drawstring groove (27) is provided at the bottom of the cylinder (22), one end of the drawstring (3) is fixed to one end of the drawstring groove (27), and the drawstring (3) is stuffed in the drawstring groove (27) until the other end of the drawstring groove (27), and the other end of the drawstring (3) passes through the cylinder (22) and is connected to a traction ring (31).

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