Corn plant height and ear position measuring instrument

By designing a corn plant height and ear position measuring instrument including a base, tape measure mechanism, support mechanism and stretching mechanism, the problem of inaccurate measurement in the prior art is solved, and high-precision measurement of corn plant height and ear position is achieved simultaneously , ensuring the accuracy and convenience of measurement.

CN119103945APending Publication Date: 2024-12-10TANGSHAN ACAD OF AGRI SCI
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Patent Information

Application Number
CN202411378485.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2024-12-10

AI Technical Summary

Technical Problem

The existing corn plant height and ear position measuring instrument has a single function, making it difficult to accurately measure the plant height and ear position of tall plants, affecting the accuracy of readings.

Method used

A corn plant height and ear position measuring instrument including a base, a tape measure mechanism, a support mechanism and a stretching mechanism is designed. The corn plant height and ear position are connected through a stretching mechanism to achieve simultaneous measurement of corn plant height and ear position, and a support frame and pulley are used. Ensure the vertical state of the tape measure and ensure measurement accuracy.

Benefits of technology

Simultaneous measurement of corn plant height and ear position is achieved, solving the problem that the ruler and the highest point of the plant are not flush when the high plant is high, and improving the convenience and accuracy of measurement.

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Abstract

The corn plant height and ear position measuring instrument comprises a base, a measuring tape mechanism, a supporting mechanism and a stretching mechanism, the supporting mechanism, the measuring tape mechanism and the stretching mechanism are installed on the base, and the measuring tape mechanism and the stretching mechanism are located on the two sides of the supporting mechanism respectively; the stretching mechanism is connected with one end of a measuring tape in the measuring tape mechanism and used for pulling the measuring tape. The device has the advantages of being simple in structure, reasonable in design, capable of achieving simultaneous measurement of the plant height and the ear position of the corn and diversified in function; in addition, the problem that the highest point of the ruler is difficult to be flush with the highest point of the plant due to too high corn plant height to influence the reading accuracy can be solved, the measurement is convenient, and the accuracy is high.
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Description

Technical Field

[0001] The invention relates to the technical field of corn measurement, and in particular to a corn plant height and ear position measuring instrument. Background Art

[0002] Corn ranks third in the world's cereal crops in terms of planting area and total output, second only to wheat and rice, and ranks first in average yield per unit area. It is an important food crop and source of feed. At the same time, corn is also the main raw material for producing bioenergy, and corn starch is also an industrial raw material for industries such as textiles, papermaking, petroleum, medicine, construction, and daily chemicals. Scholars in the field of corn research in various countries are committed to increasing corn yields. Studies have shown that increasing planting density is the most effective way to increase corn yields, but the increase in planting density is limited by problems such as corn lodging; among them, too high plants and too high ear positions are the main causes of corn lodging. In order to increase corn yields, the selection of its plant height and ear height becomes the key. Therefore, in the process of corn breeding, it is particularly important to obtain accurate plant height and ear height data.

[0003] At present, the measuring instruments in the prior art have a single function and can only measure the plant height or ear position of corn. At the same time, when measuring relatively tall plants, since the comparison point is often much higher than the height of the measurer, it is difficult to accurately ensure that the highest point of the ruler is flush with the highest point of the plant, thus affecting the accuracy of the reading. Summary of the invention

[0004] The invention provides a corn plant height and ear position measuring instrument, aiming to solve the problems in the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A corn plant height and ear position measuring instrument comprises a base, a tape measure mechanism, a supporting mechanism and a stretching mechanism, wherein the supporting mechanism, the tape measure mechanism and the stretching mechanism are respectively mounted on the base, and the tape measure mechanism and the stretching mechanism are respectively located on both sides of the supporting mechanism; the stretching mechanism is connected to one end of the tape measure in the tape measure mechanism and is used to pull the tape measure.

[0007] The beneficial effects of the present invention are as follows: when not measuring, the stretching mechanism is not connected to the measuring tape, and the measuring tape is completely rolled up;

[0008] When measuring, place the entire device next to the corn to be measured, connect the stretching mechanism to one end of the tape measure in advance, then use the stretching mechanism to pull out the tape measure, and use the tape measure to measure the plant height and ear position of the corn; during the entire process, only manual operation of the stretching mechanism is required to complete the measurement of the plant height and ear position of the corn, and the measurement is very convenient.

[0009] The invention has a simple structure and a reasonable design, can realize the simultaneous measurement of corn plant height and ear position, and has multiple functions; in addition, it can solve the problem that the corn plant height is too high and it is difficult to ensure that the highest point of the ruler is flush with the highest point of the plant, thereby affecting the accuracy of the reading, and the measurement is convenient and accurate.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the supporting mechanism includes a supporting frame and a plurality of pulleys, the supporting frame is fixedly mounted on the base, the measuring tape mechanism and the stretching mechanism are respectively located on both sides of the supporting mechanism; the plurality of pulleys are rotatably mounted on the top of the supporting frame at even intervals, and the stretching mechanism is respectively slidably fitted with the plurality of pulleys.

[0012] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The support frame is coordinated with multiple pulleys so that the measuring tape is always in a vertical state during the release process, thereby ensuring the accuracy of the measurement of corn plant height and ear position.

[0013] Furthermore, the number of the pulleys is two, and the two pulleys are respectively located on two sides of the top of the support frame.

[0014] The beneficial effects of adopting the above further scheme are simple structure and reasonable design of the number of pulleys, which can ensure that the tape measure is always in a vertical state during the release process to ensure the accuracy of corn plant height and ear position measurement, and can also ensure easy assembly and low cost.

[0015] Furthermore, the stretching mechanism includes a pull rope and a winding roller, and the winding roller is horizontally rotated and positioned on the base; the pull rope is wound around the winding roller, and one end of the pull rope is connected to one end of the tape measure.

[0016] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The pull rope is retracted and released by rotating the winding roller, so that the pull rope pulls the measuring tape to measure the plant height and ear position of corn.

[0017] Furthermore, two fixed plates are relatively fixedly installed on the base, and the winding roller is horizontally rotatably installed between the two fixed plates; a crank is rotatably and positionably installed on any one of the fixed plates, and one end of the crank is fixedly connected to one end of the winding roller.

[0018] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, and the assembly of the winding roller on the base is achieved by using two fixed plates. At the same time, the horizontal rotation of the winding roller can be achieved by using a crank, which is easy to operate and saves time and effort.

[0019] Furthermore, one end of the pull rope is connected to a hook, and one end of the measuring tape is connected to a hanging ring, and the hook can be hooked on the hanging ring.

[0020] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the connection between the pull rope and the measuring tape can be achieved by using the hook and the hanging ring, which is easy to operate and saves time and effort.

[0021] Furthermore, the tape measure mechanism includes a box body and the tape measure, the tape measure is installed in the box body, and one end of the tape measure passes through a through hole at the top of the box body and is connected to the stretching mechanism.

[0022] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the tape measure can be stored in the box body.

[0023] Furthermore, it also includes a measuring plate, which is horizontally arranged and one end of which is detachably connected to the measuring tape.

[0024] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the horizontal setting of the measuring plate makes the measuring plate flush with the highest point of the corn plant, thereby ensuring the accuracy of the measurement.

[0025] Furthermore, an insert block is buckled on the measuring tape, and one end of the insert block is provided with a socket; one end of the measuring plate can be inserted into the socket.

[0026] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The plug block can be directly buckled on the measuring tape, and one end of the measuring plate can be directly inserted into the socket on the plug block, which is convenient for assembly and saves time and effort.

[0027] Furthermore, the base is evenly spaced with a plurality of fixing nails.

[0028] The beneficial effects of adopting the above further solution are simple structure and reasonable design. The entire device can be fixed next to the corn plant by using multiple fixing nails, thereby ensuring the stability of the entire device during the measurement process, thereby ensuring the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention during measurement;

[0030] Figure 2 It is a partial structural schematic diagram of the present invention during measurement;

[0031] Figure 3 It is a schematic diagram of the structure of the present invention when it is not measured;

[0032] Figure 4 It is a structural schematic diagram of the plug-in block in the present invention;

[0033] Figure 5It is a structural schematic diagram of the stretching mechanism in the present invention;

[0034] Figure 6 It is a partial structural schematic diagram of the supporting mechanism in the present invention.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Base; 2. Tape measure; 3. Support frame; 4. Pulley; 5. Pull rope; 6. Winding roller; 7. Fixed plate; 8. Crank; 9. Hook; 10. Hanging ring; 11. Box body; 12. Measuring plate; 13. Insert block; 14. Socket; 15. Fixing nail; 16. Positioning cylinder; 17. Positioning screw; 18. Bayonet; 19. Locking screw. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0041] Example 1

[0042] like Figures 1 to 6As shown, this embodiment provides a corn plant height and ear position measuring instrument, including a base 1, a tape measure mechanism, a supporting mechanism and a stretching mechanism, wherein the supporting mechanism, the tape measure mechanism and the stretching mechanism are respectively installed on the base 1, and the tape measure mechanism and the stretching mechanism are respectively located on both sides of the supporting mechanism; the stretching mechanism is connected to one end of the tape measure 2 in the tape measure mechanism, and is used to pull the tape measure 2.

[0043] When not measuring, the stretching mechanism is not connected to the measuring tape 2, and the measuring tape 2 is completely rolled up;

[0044] When measuring, the entire device is placed next to the corn to be measured, the stretching mechanism is pre-connected to one end of the measuring tape 2, and then the measuring tape 2 is pulled out using the stretching mechanism, and the measuring tape 2 is used to measure the plant height and ear position of the corn; during the entire process, only the stretching mechanism needs to be manually operated to complete the measurement of the plant height and ear position of the corn, and the measurement is very convenient.

[0045] Preferably, in this embodiment, the base 1 is preferably a rectangular base, but may also be in other suitable geometric shapes, such as a circular base.

[0046] Preferably, in this embodiment, the measuring tape 2 preferably has a flexible ruler body.

[0047] In addition, a scale is provided on one side surface of the measuring tape 2.

[0048] This embodiment has a simple structure and reasonable design, can realize the simultaneous measurement of corn plant height and ear position, and has diverse functions; in addition, it can solve the problem that the corn plant height is too high and it is difficult to ensure that the highest point of the ruler is flush with the highest point of the plant, thereby affecting the accuracy of the reading. The measurement is convenient and accurate.

[0049] Example 2

[0050] On the basis of Example 1, in this embodiment, the supporting mechanism includes a supporting frame 3 and a plurality of pulleys 4, the supporting frame 3 is fixedly mounted on the base 1, and the tape measure mechanism and the stretching mechanism are respectively located on both sides of the supporting mechanism; the plurality of pulleys 4 are rotatably mounted at even intervals on the top of the supporting frame 3, and the stretching mechanism is respectively slidably fitted with the plurality of pulleys 4.

[0051] This solution has a simple structure and a reasonable design. The support frame 3 cooperates with multiple pulleys 4 so that the measuring tape 2 is always in a vertical state during the release process, thereby ensuring the accuracy of the measurement of corn plant height and ear position.

[0052] Preferably, in this embodiment, the support frame 3 is preferably a T-shaped frame.

[0053] In addition, a plurality of pulleys 4 are distributed in a straight line on the top of the support frame 3 , and are distributed along a direction from one end to the other end of the top of the support frame 3 .

[0054] Example 3

[0055] On the basis of Example 2, in this embodiment, the number of the pulleys 4 is two, and the two pulleys 4 are respectively located on both sides of the top of the support frame 3.

[0056] This solution has a simple structure and a reasonable number of pulleys 4, which can ensure that the measuring tape 2 is always in a vertical state during the release process to ensure the accuracy of the measurement of corn plant height and ear position, and can also ensure easy assembly and low cost.

[0057] Based on the above solution, two pulleys 4 are rotatably mounted on the two ends of the top of the T-shaped frame.

[0058] Example 4

[0059] On the basis of any one of Examples 2 to 3, in this embodiment, the stretching mechanism includes a pull rope 5 and a winding roller 6, and the winding roller 6 is horizontally rotated and positioned on the base 1; the pull rope 5 is wound around the winding roller 6, and one end of the pull rope is connected to one end of the tape measure 2.

[0060] The solution has a simple structure and a reasonable design. The pull rope 5 is retracted and released by the rotation of the winding roller 6, so that the pull rope 5 pulls the measuring tape 2 to measure the plant height and ear position of corn.

[0061] Example 5

[0062] On the basis of Example 4, in this embodiment, two fixed plates 7 are relatively fixedly installed on the base 1, and the winding roller 6 is horizontally rotatably installed between the two fixed plates 7; a crank 8 is rotatably and positionably installed on any one of the fixed plates 7, and one end of the crank 8 is fixedly connected to one end of the winding roller 6.

[0063] This solution has a simple structure and a reasonable design. Two fixing plates 7 are used to assemble the winding roller 6 on the base 1. At the same time, a crank 8 can be used to realize horizontal rotation of the winding roller 6. The operation is simple, time-saving and labor-saving.

[0064] Based on the above scheme, the two ends of the winding roller 6 are relatively fixedly connected with horizontally arranged rotating shafts, and the ends of the two rotating shafts away from each other are rotatably connected to the two fixed plates 7 respectively; one end of the crank 8 is fixedly connected to the corresponding end of one of the rotating shafts.

[0065] Preferably, in this embodiment, a positioning cylinder 16 is fixedly installed on one side of one of the fixing plates 7 away from the other fixing plate 7, and the positioning cylinder 16 is sleeved outside the corresponding rotating shaft, and the positioning cylinder 16 extends outside one end of the crank 8; at this time, a screw hole penetrating inside and outside is provided on the positioning cylinder 16, and a positioning screw 17 is threadedly connected to the screw hole. When in use, the winding roller 6 can be driven to rotate by manually shaking the crank 8, and then the positioning screw 17 is manually screwed until one end thereof abuts against the crank 8, thereby positioning the crank 8.

[0066] Example 6

[0067] On the basis of any one of Embodiments 4 to 5, in this embodiment, one end of the pull rope 5 is connected to a hook 9, one end of the measuring tape 2 is connected to a hanging ring 10, and the hook 9 can hook the hanging ring 10.

[0068] The solution has a simple structure and a reasonable design. The connection between the pull rope 5 and the measuring tape 2 can be achieved by cooperating with the hook 9 and the hanging ring 10. The operation is simple and time-saving.

[0069] Alternatively, one end of the drawstring 5 can be directly tied to one end of the measuring tape 2 .

[0070] Example 7

[0071] On the basis of the above embodiments, in this embodiment, the tape measure mechanism includes a box body 11 and the tape measure 2, the tape measure 2 is installed in the box body 11, and one end of the tape measure 2 passes through the through hole at the top of the box body 11 and is connected to the stretching mechanism.

[0072] This solution has a simple structure and a reasonable design, and the box body 11 can be used to store the measuring tape.

[0073] Preferably, in this embodiment, the measuring tape 2 is a steel measuring tape in the prior art, and when one end of the pull rope 5 is separated from one end of the measuring tape 2, the measuring tape 2 can automatically retract.

[0074] The height of the box body 11 is known and fixed. When measuring, the height of the tape measure 2 exposed outside the box body 11 is calculated, and the plant height and ear position of the corn can be calculated in combination with the height of the box body 11.

[0075] Example 8

[0076] On the basis of the above embodiments, this embodiment further includes a measuring plate 12 , which is horizontally arranged and one end of which is detachably connected to the measuring tape 2 .

[0077] The solution has a simple structure and a reasonable design. The measuring plate 12 is arranged horizontally so that the measuring plate 12 is flush with the highest point of the corn plant, thereby ensuring the accuracy of the measurement.

[0078] Preferably, in this embodiment, the measuring plate 12 is preferably a long strip-shaped plate for easy measurement.

[0079] Preferably, in this embodiment, the measuring plate 12 is preferably a telescopic plate, which makes measurement more convenient.

[0080] In addition, the above-mentioned measuring plate 12 includes a plurality of plate bodies, each of which is hollow inside and has one end open and the other end closed. The plurality of plate bodies are sequentially put together end to end, and among two adjacent plate bodies, the closed end of one of the plate bodies passes through the open end of the other plate body and extends into the other plate body, and the closed end of one of the plate bodies is slidably connected to a pair of slide rails arranged oppositely in the other plate body through a pair of slide rods, without the need for positioning.

[0081] Example 9

[0082] On the basis of Example 8, in this embodiment, an insert block 13 is buckled on the measuring tape 2 , and a socket 14 is provided at one end of the insert block 13 ; one end of the measuring plate 12 can be inserted into the socket 14 .

[0083] This solution has a simple structure and reasonable design. The plug block 13 can be directly buckled on the measuring tape 2, and one end of the measuring plate 12 can be directly inserted into the socket 14 on the plug block 13, which is convenient for assembly and saves time and effort.

[0084] Preferably, in this embodiment, the plug block 13 is preferably a rectangular box body, and the socket 14 is preferably a long strip-shaped socket.

[0085] Based on the above solution, when one end of the measuring board 12 is inserted into the socket 14 , it fits against the inner wall of the socket 14 .

[0086] Preferably, in this embodiment, the insert block 13 is provided with a bayonet 18, into which the tape measure 2 can be inserted; the insert block 13 is also provided with a positioning screw hole connected to the bayonet 18, and a locking screw 19 is threadedly connected to the positioning screw hole. When in use, when the tape measure 2 is inserted into the bayonet 18, the locking screw 19 can be tightened until it abuts against the tape measure 2 to position the insert block 13.

[0087] Example 10

[0088] On the basis of the above embodiments, in this embodiment, a plurality of fixing nails 15 are evenly spacedly installed on the base 1 .

[0089] This solution has a simple structure and a reasonable design. The entire device can be fixed next to the corn plant by using a plurality of fixing nails 15, thereby ensuring the stability of the entire device during the measurement process, thereby ensuring the accuracy of the measurement.

[0090] Preferably, in this embodiment, the base 1 is preferably a rectangular base, and through holes are respectively provided at its four corners; preferably, there are four fixing nails 15, and the four fixing nails 15 are respectively inserted into the four through holes. When measuring, the four fixing nails 15 are driven into the ground in advance by a nail hammer to fix the entire device.

[0091] The measurement process of the present invention is as follows:

[0092] When measuring, the whole device is placed next to the corn to be measured, and one end of the pull rope 5 is pre-connected with the measuring tape 2 through the hook 9 and the hanging ring 10; then the crank 8 is manually cranked to rotate the winding roller 6, so that the winding roller 6 reels the pull rope 5, so that the pull rope 5 is pulled out of the measuring tape 2, so that the measuring tape 2 is in a vertical state;

[0093] Finally, the plug 13 is hung at the corresponding position on the measuring tape 2, and the measuring plate 12 is inserted into the socket 14 so that the measuring plate 12 is flush with the top of the corn plant to measure the height of the corn plant; then, the plug 13 is hung at the corresponding position on the measuring tape 2 so that the measuring plate 12 is flush with the corresponding position of the corn ear on the corn plant to measure the position of the corn ear.

[0094] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0095] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A corn plant height and ear position measuring instrument, characterized in that: The invention comprises a base (1), a measuring tape mechanism, a supporting mechanism and a stretching mechanism, wherein the supporting mechanism, the measuring tape mechanism and the stretching mechanism are respectively mounted on the base (1), and the measuring tape mechanism and the stretching mechanism are respectively located on both sides of the supporting mechanism; the stretching mechanism is connected to one end of the measuring tape (2) in the measuring tape mechanism and is used to pull the measuring tape (2).

2. The corn plant height and ear position measuring instrument according to claim 1, characterized in that: The support mechanism comprises a support frame (3) and a plurality of pulleys (4); the support frame (3) is fixedly mounted on the base (1); the measuring tape mechanism and the stretching mechanism are respectively located on two sides of the support mechanism; the plurality of pulleys (4) are rotatably mounted on the top of the support frame (3) at even intervals; and the stretching mechanism is slidably fitted with the plurality of pulleys (4).

3. The corn plant height and ear position measuring instrument according to claim 2, characterized in that: There are two pulleys (4), and the two pulleys (4) are respectively located on two sides of the top of the support frame (3).

4. The corn plant height and ear position measuring instrument according to claim 2, characterized in that: The stretching mechanism comprises a pull rope (5) and a winding roller (6), wherein the winding roller (6) is installed on the base (1) in a horizontally rotatable and positionable manner; the pull rope (5) is wound around the winding roller (6), and one end of the pull rope is connected to one end of the measuring tape (2).

5. The corn plant height and ear position measuring instrument according to claim 4, characterized in that: Two fixed plates (7) are relatively fixedly installed on the base (1), and the winding roller (6) is horizontally rotatably installed between the two fixed plates (7); a crank (8) is rotatably and positionably installed on any one of the fixed plates (7), and one end of the crank (8) is fixedly connected to one end of the winding roller (6).

6. The corn plant height and ear position measuring instrument according to claim 4, characterized in that: One end of the pull rope (5) is connected to a hook (9), one end of the measuring tape (2) is connected to a hanging ring (10), and the hook (9) can be hooked on the hanging ring (10).

7. The corn plant height and ear position measuring instrument according to any one of claims 1 to 6, characterized in that: The tape measure mechanism comprises a box body (11) and the tape measure (2); the tape measure (2) is installed in the box body (11), and one end of the tape measure (2) passes through a through hole at the top of the box body (11) and is connected to the stretching mechanism.

8. The corn plant height and ear position measuring instrument according to any one of claims 1 to 6, characterized in that: It also comprises a measuring plate (12), which is arranged horizontally and has one end detachably connected to the measuring tape (2).

9. The corn plant height and ear position measuring instrument according to claim 8, characterized in that: An insert block (13) is buckled onto the measuring tape (2), one end of the insert block (13) is provided with a socket (14); one end of the measuring plate (12) can be inserted into the socket (14).

10. The corn plant height and ear position measuring instrument according to any one of claims 1 to 6, characterized in that: The base (1) is provided with a plurality of fixing nails (15) at even intervals.