Sampling device for corn stalk rot prevention and control research

Abstract

The utility model discloses a sampling device for corn stalk rot prevention and control research, and belongs to the technical field of corn disease prevention and control research. The device mainly comprises a storage tube, a sealing cover, a cutting blade, a fixing needle, a spring, a plug, a rubber baffle ring and the like. The top of the storage pipe is in threaded connection with the sealing cover, the cutting blade and the fixing needles distributed circularly are arranged at the bottom of the sealing cover, the spring is arranged at the bottom in the storage pipe, and a plug on the spring is composed of a rubber gasket and a lantern ring. During sampling, the fixing needle fixes a corn stem tissue, the cutting blade performs cutting under the assistance of the fixing needle, the plug compresses the spring in the cutting process, and a sample is jacked into the storage tube under the action of the elastic force of the spring after cutting is completed. The device solves the problem of high sample pollution risk in existing corn stalk rot tissue sampling, realizes precise cutting and safe storage through unique structural design, effectively reduces pollution, is beneficial to sample storage, and provides reliable sample guarantee for subsequent research work such as pathogenic bacteria identification, toxicity determination and disease resistance evaluation.

Description

Technical Field

[0001] This utility model relates to the field of maize disease control research technology, and in particular to a sampling device for maize stalk rot control research. Background Technology

[0002] Corn stalk rot is one of the most serious soil-borne diseases in corn production in my country. It is widely distributed in major corn-producing areas, which not only significantly reduces corn yield and quality, but also plays a crucial role in disease control research. Standardized collection and preservation of samples are the basic guarantee for key links such as pathogen identification, virulence determination and disease resistance evaluation.

[0003] During the sampling process, operators typically use a knife to cut and remove the diseased corn stalk base tissue, which is then placed in a sampling bag for preservation. However, this process can easily lead to sample contamination, and improper preservation of the sample in the sampling bag can cause it to rot, affecting subsequent research. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a sampling device for research on the prevention and control of maize stalk rot, which solves the problem of high sample contamination risk in existing methods of sampling maize stalk rot tissue.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] A sampling device for the prevention and control of corn stalk rot includes a storage tube with a cap threaded to the top. Several cutting blades are vertically arranged around the bottom of the cap and inserted into the storage tube. A fixing pin is vertically arranged on the bottom surface of the cap.

[0007] Several of the cutting blades have chamfered ends at their bottom.

[0008] A spring is installed at the bottom of the storage tube, and a plug is installed at the top of the spring.

[0009] The plug consists of a rubber gasket and a collar. The collar is fitted onto the outside of the rubber gasket, and a groove is provided on the top of the collar to match the bottom of the cutting blade. The collar is slidably connected to the inner wall of the storage tube.

[0010] A rubber retaining ring is fitted on the upper part of the storage tube. After the cap is threaded onto the top of the storage tube, the bottom of the cap abuts against the top surface of the rubber retaining ring.

[0011] The fixing pins are provided in multiples, and the multiple fixing pins are arranged in a circular row on the bottom surface of the cover.

[0012] Compared with existing technologies, the advantages of this invention are as follows: By setting a cap with a cutting blade and a fixing pin, and a storage tube with an internal spring and a plug, this invention achieves precise cutting and safe storage of diseased tissue at the base of the corn stalk. The fixing pin can fix the corn stalk tissue, the chamfered design of the cutting blade facilitates cutting, and the cooperation of the spring and plug, along with the rubber retaining ring, ensures the airtightness of the storage tube, effectively reducing the risk of sample contamination. It also facilitates sample preservation, providing reliable sample support for subsequent research work such as pathogen identification, virulence determination, and disease resistance evaluation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the storage tube structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the storage tube of this utility model;

[0015] Figure 3 This is a schematic diagram of the cutting disc of this utility model;

[0016] Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0017] In the picture:

[0018] 1. Storage tube; 2. Cap; 3. Cutting disc; 4. Fixing pin; 5. Spring; 6. Plug; 601. Rubber gasket; 602. Collar; 7. Rubber retaining ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0020] A sampling device for research on the prevention and control of corn stalk rot includes a storage tube 1, with a cap 2 threadedly connected to the top of the storage tube 1. Several cutting blades 3 are vertically arranged around the bottom of the cap 2, and these cutting blades 3 are inserted into the storage tube 1. Fixing pins 4 are vertically arranged on the bottom surface of the cap 2. The bottom ends of the cutting blades 3 are chamfered. A spring 5 is located at the bottom of the storage tube 1, and a plug 6 is located at the top of the spring 5. The plug 6 consists of a rubber washer 601 and a collar 602. The collar 602 is fitted onto the outside of the rubber washer 601, and its top has a groove that matches the bottom of the cutting blades 3. The collar 602 is slidably connected to the inner wall of the storage tube 1. A rubber retaining ring 7 is fitted onto the upper part of the storage tube 1. After the cap 2 is threadedly connected to the top of the storage tube 1, the bottom of the cap 2 abuts against the top surface of the rubber retaining ring 7. Multiple fixing pins 4 are arranged in a circular row on the bottom surface of the cap 2.

[0021] When taking tissue samples for corn stalk rot:

[0022] First, locate the diseased corn stalk tissue. Align the bottom of the device's cap 2 with this location, inserting multiple fixing pins 4 into the tissue surrounding the base of the corn stalk to secure it and prevent movement during sampling. With the fixing pins 4 securing the corn stalk tissue, the cutting blade 3 at the bottom begins to cut into the diseased corn stalk tissue. The chamfered design at both ends of the cutting blade 3 makes the cutting process smoother, reducing pulling and damage to the diseased corn stalk tissue. As the cutting blade 3 cuts downwards, the plug 6 inside the storage tube 1 is compressed by the cutting blade 3, compressing the bottom spring 5. The collar 602 slides against the inner wall of the storage tube 1. When the cutting blade 3 has completely cut to the predetermined depth, the required diseased corn stalk base tissue is cut off. At this point, due to the elastic force of the spring 5, the plug 6 will push slightly upwards, pushing the cut sample into the storage tube 1.

[0023] When sampling corn stalk rot tissue, the operator first aligns the cutting blade 3 at the bottom of the cap 2 with the base of the diseased corn stalk and forcefully inserts the cutting blade 3 into the corn stalk. Simultaneously, the fixing needle 4 located inside the cutting blade 3 also inserts into the corn stalk tissue. Next, the operator holds the cap 2 and rotates it. The corn stalk rotates along with the fixing needle 4. Since the cutting blade 3 has cut into the corn stalk, the corn stalk is eventually broken off with the rotation. After breaking off the stalk, the operator slowly pulls out the cap 2, and the broken corn stalk is pulled out along with the cap 2. Then, the cap 2 containing the corn stalk is inserted into the storage tube 1. The groove at the top of the collar 602 fits tightly against the bottom of the cutting blade 3. The rubber gasket 601 seals the bottom of the cutting blade 3 and, pushed by the spring 5, fits tightly against the cutting blade 3, preventing the corn stalk inside the cutting blade 3 from falling out.

[0024] After sampling, continue to rotate the cap 2 to make it tightly threaded onto the top of the storage tube 1. At this time, the bottom of the cap 2 abuts against the top surface of the rubber retaining ring 7. The rubber retaining ring 7 and the rubber gasket 601 of the plug 6 work together to form a relatively sealed space inside the storage tube 1, effectively preventing external dust, bacteria and other contaminants from entering the storage tube 1. At the same time, it can also reduce the loss of moisture in the storage tube 1, prevent the sample from rotting due to the influence of the external environment, and ensure the integrity of the sample during transportation and storage.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling device for use in studies of the control of Goss' Wilt, characterized in that: The utility model provides a storage tube (1) is provided with a plurality of cutting pieces (3) in the inside, and the bottom of cutting piece (3) is provided with a fixed needle (4), and the bottom of cutting piece (3) is provided with a chamfer.

2. The sampling device for the study of the prevention of Goss' Wilt according to claim 1, characterized in that: The bottom of the plurality of cutting pieces (3) is provided with a chamfer.

3. The sampling device for the study of the control of Goss' Wilt according to claim 2, characterized in that: The inside bottom of the storage tube (1) is provided with a spring (5), and the top of the spring (5) is provided with a plug (6).

4. The sampling device for the study of the prevention of Goss' Wilt according to claim 3, characterized in that: The plug (6) is composed of a rubber gasket (601) and a sleeve ring (602), the sleeve ring (602) is sleeved on the outside of the rubber gasket (601), the top of the sleeve ring (602) is provided with a groove matched with the bottom of the cutting piece (3), and the sleeve ring (602) is slidably connected with the inner wall of the storage tube (1).

5. The sampling device for the study of the control of Goss' Wilt according to claim 4, characterized in that: The upper part of the storage tube (1) is sleeved with a rubber stop ring (7), the bottom of the cover (2) abuts against the top surface of the rubber stop ring (7) after being threadedly connected to the top of the storage tube (1).

6. The sampling device for the study of the control of Goss' Wilt according to claim 5, characterized in that: The fixed needle (4) is provided with a plurality of fixed needles (4) arranged in a circle on the bottom of the cover (2).

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