Photosynthetic reaction benchmark measuring equipment based on carbon dioxide

Abstract

The invention relates to the technical field of plant respiration monitoring, in particular to carbon dioxide-based photosynthetic reaction benchmark measuring equipment which comprises a sealing membrane assembly, an air supply assembly and a main frame assembly, the main frame assembly comprises a plurality of transverse pipes and vertical pipes which are detachably connected with one another, and the transverse pipes and the vertical pipes are detachably connected with one another; the plurality of transverse pipes are arranged at intervals in the vertical direction, the plurality of vertical pipes are arranged at intervals in the vertical direction, so that a plant to be detected is arranged between the transverse pipes and the vertical pipes, the sealing film assembly comprises a plurality of sealing films, and the sealing films wind the peripheral surface of the main frame assembly to form a space to be detected; the gas supply assembly penetrates through the sealing film assembly to be connected with the vertical pipe or the transverse pipe so as to input gas with preset temperature and carbon dioxide concentration into the space to be measured, and the photosynthetic measurement assembly is arranged on the transverse pipe or the vertical pipe. The photosynthetic reaction benchmark measuring equipment based on carbon dioxide is convenient for testing various types of plants, and the measuring cost is reduced.

Description

Technical Field

[0001] This application relates to the field of plant respiration monitoring technology, and more particularly to a carbon dioxide-based benchmark measurement device for photosynthetic response. Background Technology

[0002] Respiration is a fundamental metabolic process in the life activities of organisms and one of the most important physiological activities in plant growth. Plant respiratory metabolism is closely related to the synthesis and decomposition of various macromolecules, providing the energy and necessary intermediate substances required for their life activities, and is of great significance to plants. Related technologies have proposed an experimental apparatus and method for measuring plant respiration, which involves placing the plant under test in a respiration chamber to measure photosynthesis. However, this method is costly and cannot flexibly handle various types of plants. Summary of the Invention

[0003] This application provides a carbon dioxide-based photosynthetic reaction benchmark measurement device, which is convenient for various types of plants and reduces measurement costs.

[0004] This application provides a carbon dioxide-based photosynthetic reaction benchmark measurement device, comprising:

[0005] The main frame assembly includes multiple horizontal tubes and vertical tubes that are detachably connected to each other. The multiple horizontal tubes are arranged at intervals in the vertical direction, and the multiple vertical tubes are arranged at intervals in the vertical direction, so as to place the plant to be tested between the horizontal tubes and the vertical tubes.

[0006] A sealing membrane assembly, comprising a plurality of sealing membranes, wherein the sealing membranes wrap around the outer peripheral surface of the main frame assembly to form a space to be measured;

[0007] A gas supply assembly, which passes through the sealing membrane assembly and is connected to the riser or horizontal pipe to supply gas with a preset temperature and carbon dioxide concentration to the space to be tested;

[0008] A photosynthesis measurement component is disposed on the horizontal or vertical tube.

[0009] The carbon dioxide-based photosynthetic reaction benchmark measurement device implemented in this application is easy to use for various types of plants and reduces measurement costs.

[0010] In some embodiments, the riser and horizontal pipe are made of any one of polyvinyl chloride, polystyrene, and polymethyl methacrylate.

[0011] In some embodiments, the sealing film is made of polyethylene, polyvinyl chloride and ethylene-tetrafluoroethylene copolymer, and the thickness of the sealing film is 0.06 mm to 0.1 mm.

[0012] In some embodiments, the photosynthesis measurement assembly includes a carbon dioxide infrared analyzer, a photosynthetic transpiration meter, and a mounting base. The upper end of the mounting base is disposed on the horizontal tube, and the carbon dioxide infrared analyzer and the photosynthetic transpiration meter are respectively disposed in mounting grooves symmetrically opened on both sides of the mounting base.

[0013] In some embodiments, the mounting base includes a base body and a screw rod. The upper end of the base body is threadedly connected to the lower end of the screw rod. The upper end of the screw rod is fixed to a horizontal tube. The base body rotates relative to the screw rod to adjust the position of the mounting base in the vertical direction.

[0014] In some embodiments, the carbon dioxide-based photosynthetic reaction benchmark measuring device further includes a heating assembly, which includes a heating element and a temperature monitoring element, both of which are disposed on the horizontal or vertical tube.

[0015] In some embodiments, the carbon dioxide-based photosynthetic reaction benchmark measuring device further includes an exhaust assembly connected to a sealing membrane assembly. The exhaust assembly includes an upper support, a rotating motor, a cover plate, and an exhaust cylinder. The upper support is disposed on the outer circumferential surface of the horizontal tube and is connected to the rotating motor and the exhaust cylinder. The cover plate is connected to the output end of the rotating motor, and the rotating motor drives the cover plate to rotate to adjust the flow area of ​​the exhaust cylinder.

[0016] In some embodiments, the carbon dioxide-based photosynthetic reaction benchmark measuring device further includes an impeller assembly, which includes a drive motor and an impeller. The drive motor is mounted on the heating component, and the output end of the drive motor is provided with an impeller.

[0017] In some embodiments, the carbon dioxide-based photosynthetic reaction benchmark measuring device further includes clamps and fasteners, the clamps being disposed on a horizontal tube in contact with the ground, and the fasteners passing through the clamps and sealing membrane and connected to the ground.

[0018] In some embodiments, the number of clamps and fasteners is multiple, with each clamp corresponding to one of the multiple fasteners. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a carbon dioxide-based photosynthetic reaction benchmark measurement device provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the main frame assembly according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the exhaust assembly according to an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the mounting base according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the impeller assembly and heating assembly according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the sealing membrane assembly according to an embodiment of this application;

[0026] The above figures include the following reference numerals:

[0027] Main frame assembly 1, horizontal tube 11, vertical tube 12,

[0028] Sealing membrane assembly 2, sealing membrane 21,

[0029] Mounting base 3, mounting slot 31, base body 32, screw 33, clamp 331.

[0030] Heating component 4,

[0031] Exhaust assembly 5, upper bracket 51, rotating motor 52, cover plate 53, exhaust pipe 54

[0032] Impeller assembly 6, drive motor 61, impeller 62, guide vane 63

[0033] Clamp 7. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0035] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] This application provides a carbon dioxide-based photosynthetic reaction benchmark measurement device, comprising:

[0038] The main frame assembly 1 includes multiple horizontal tubes 11 and vertical tubes 12 that are detachably connected to each other. The multiple horizontal tubes 11 are arranged at intervals in the vertical direction, and the multiple vertical tubes 12 are arranged at intervals in the vertical direction, so as to place the plant to be tested between the horizontal tubes 11 and the vertical tubes 12.

[0039] Sealing membrane assembly 2, which includes multiple sealing membranes 21, wraps the outer peripheral surface of the main frame assembly 1 to form the space to be tested;

[0040] The gas supply assembly passes through the sealing membrane assembly 2 and is connected to the riser 12 or the horizontal pipe 11 to input gas with a preset temperature and carbon dioxide concentration into the space to be measured.

[0041] A photosynthesis measurement component is installed on the horizontal tube 11 or the vertical tube 12.

[0042] The main frame assembly 1 is composed of multiple horizontal tubes 11 and vertical tubes 12 connected to each other. The horizontal tubes 11 extend in the left-right or front-back direction, that is, the horizontal tubes 11 extend in the horizontal direction, and the vertical tubes 12 extend in the vertical direction. The horizontal tubes 11 are arranged at intervals in the vertical direction of the vertical tubes 12. The horizontal tubes 11 and the vertical tubes 12 can be glued together to facilitate disassembly and installation.

[0043] The sealing membrane assembly 2 includes multiple sealing membranes 21, which wrap around the outer periphery of the frame formed by the horizontal tube 11 and the vertical tube 12 to form the test space. The sealing membranes 21 can be removed as needed, reducing wear and tear on the plant itself. Furthermore, the sealing membranes 21 reduce the cost of forming the test space, thereby reducing the cost of photosynthetic response benchmark measurements of carbon dioxide within the sealed space. It also facilitates the use of horizontal tubes 11 and vertical tubes 12 of different lengths depending on the size of the plant. The horizontal tubes 11 and vertical tubes 12 are either glued or detachable; glued connections, due to oxidation after a period of use, facilitate disassembly.

[0044] The horizontal tube 11 and the vertical tube 12 are connected by adhesive or detachable means, allowing for the rapid construction of frames of different sizes to suit plants at different growth stages or experimental needs. For example, short horizontal tubes 11 and low vertical tubes 12 can be used during the seedling stage, while long horizontal tubes 11 and high vertical tubes 12 can be used during the mature stage, avoiding the need for repeated purchases of equipment.

[0045] Furthermore, the horizontal tube 11 and the vertical tube 12 are made of flexible, low-friction materials, such as silicone and TPU, to reduce the contact pressure with plant leaves and stems and avoid mechanical damage caused by traditional rigid containers, such as glass covers, making them particularly suitable for long-term monitoring of fragile tissues.

[0046] The sealing membrane 21 forms an independent microenvironment with the frame, effectively isolating external airflow interference, reducing CO2 concentration fluctuations, and improving the stability of photosynthetic rate measurement.

[0047] The photosynthetic reaction benchmark measurement device based on carbon dioxide implemented in this application, by setting the main frame assembly 1 and the sealing membrane 21, can flexibly cope with plants of different sizes, reduce the cost of making the test space, facilitate the handling of various types of plants, and reduce the measurement cost.

[0048] In some embodiments, the riser 12 and the horizontal tube 11 are made of any one of polyvinyl chloride, polystyrene, and polymethyl methacrylate. Polyvinyl chloride, polystyrene, and polymethyl methacrylate are all transparent materials, which reduces the impact of sunlight or illumination during measurement, avoids affecting light levels, and improves the accuracy of the measurement.

[0049] Furthermore, the sealing membrane 21 is made of polyethylene, polyvinyl chloride, and ethylene-tetrafluoroethylene copolymer, and its thickness is 0.06 mm to 0.1 mm. This sealing membrane 21 possesses certain corrosion resistance, flexibility, and transparency, facilitating photosynthesis measurement. Consequently, there is no need to install a light-emitting component inside the measurement space; the device of this application can be directly placed in the light-emitting area, eliminating the need for a separate light-emitting component in the measurement space, reducing costs, and improving the applicability of the device. The thickness of the sealing membrane 21, 0.06 mm to 0.1 mm, ensures light transmittance while maintaining a certain structural strength, improving stability during use.

[0050] In some embodiments, the photosynthesis measurement assembly includes a carbon dioxide infrared analyzer, a photosynthetic transpiration meter, and a mounting base 3. The upper end of the mounting base 3 is mounted on a horizontal tube 11, and the carbon dioxide infrared analyzer and the photosynthetic transpiration meter are respectively mounted in mounting slots 31 symmetrically opened on both sides of the mounting base 3. That is, they are symmetrically arranged in the front-back direction or the left-right direction, or can be understood as being collinearly arranged.

[0051] The carbon dioxide infrared analyzer and the photosynthetic transpiration meter are respectively installed in symmetrical mounting slots 31 on both sides of the mounting base 3. This symmetrical design ensures the balance of the equipment during operation and reduces vibration or instability caused by uneven weight distribution. The symmetrical design allows the mounting base 3 to utilize space more efficiently, avoiding structural inconsistencies caused by excessively large equipment on one side. The symmetrical mounting slots 31 design facilitates installation and disassembly, as well as maintenance and replacement. The horizontal tube 11 allows the mounting base 3 to be adjusted within a certain horizontal range to adapt to different experimental needs. The carbon dioxide infrared analyzer measures carbon dioxide concentration, providing data to help researchers accurately understand the photosynthetic efficiency of plants under different environmental conditions. The photosynthetic transpiration meter measures the photosynthetic rate and transpiration rate of plants. This instrument can simultaneously monitor photosynthesis and water management in plants. The symmetrical design reduces measurement errors caused by asymmetrical equipment placement. For example, if the two instruments are installed asymmetrically, the measurement results may be affected by the positional deviation of the equipment itself, thus affecting the accuracy of the data. The symmetrical design helps ensure that the two instruments operate under the same environmental conditions, thereby improving the comparability and accuracy of the measurement results. For example, when measuring photosynthesis and transpiration, symmetrical mounting ensures that both instruments are subjected to the same light, temperature, and humidity conditions, thus reducing the influence of environmental factors on the measurement results. This integrated design allows for the simultaneous measurement of multiple parameters, reducing the number of devices required in the experiment and improving experimental efficiency. Researchers can obtain data on carbon dioxide concentration, photosynthetic rate, and transpiration rate at the same time without needing to use multiple devices for measurement. Furthermore, since the two instruments are mounted on the same mounting base 3 and under the same environmental conditions, the consistency and comparability of the measurement data can be ensured.

[0052] In some embodiments, the mounting base 3 includes a base body 32 and a screw 33. The upper end of the base body 32 is threadedly connected to the lower end of the screw 33. The upper end of the screw 33 is fixed on the horizontal tube 11. The base body 32 rotates relative to the screw 33 to adjust the position of the mounting base 3 in the vertical direction.

[0053] Specifically, the screw 33 extends vertically, and its lower end is connected to the base 32. The position of the base 32 in the vertical direction can be changed by rotating it, thereby altering the positions of the carbon dioxide infrared analyzer and the photosynthetic transpiration meter in the vertical direction. This is suitable for photosynthesis measurement experiments requiring precise control of the measuring equipment's position, such as photosynthesis and transpiration measurements on plant leaves at different heights. Precise adjustment of the vertical position is achieved through threaded connection and rotational adjustment. Its structure is simple, easy to operate, and possesses good stability and flexibility, making it suitable for photosynthesis measurement experiments requiring precise control of the measuring equipment's position, thus improving the flexibility and adaptability of the experiment. Furthermore, the upper end of the screw 33 is equipped with a clamp 331, which is detachably mounted on the horizontal tube 11.

[0054] In some embodiments, the carbon dioxide-based photosynthetic reaction benchmark measuring device further includes a heating assembly 4, which includes a heating element and a temperature monitoring element, both of which are mounted on a horizontal tube 11 or a vertical tube 12. Through the cooperation of the heating element and the temperature monitoring element, the operating environment temperature of the photosynthetic measuring device can be controlled, preventing excessive temperature fluctuations from affecting the accuracy of the experiment. For example, in outdoor or laboratory environments, the temperature may fluctuate due to seasonal or diurnal variations; the heating assembly 4 can compensate for these changes and maintain the consistency of experimental conditions.

[0055] Specifically, the temperature monitoring device can monitor temperature changes in real time and adjust the power of the heating component through a feedback mechanism to ensure the accuracy of temperature control. For example, when the temperature monitoring device detects that the temperature is lower than the set value, the heating component will automatically increase the power to raise the temperature; when the temperature reaches the set value, the heating component will reduce the power to maintain a stable temperature.

[0056] The heating component 4, in conjunction with the temperature monitoring component, can control and monitor the temperature of the space under test in real time, ensuring the stability and consistency of experimental conditions and improving the reliability of experimental results.

[0057] In some embodiments, the carbon dioxide-based photosynthetic reaction benchmark measuring device further includes an exhaust assembly 5, which is connected to the sealing membrane assembly 2. The exhaust assembly 5 includes an upper support 51, a rotating motor 52, a cover plate 53, and an exhaust pipe 54. The upper support 51 is disposed on the outer circumferential surface of the horizontal tube 11 and is connected to the rotating motor 52 and the exhaust pipe 54. The cover plate 53 is connected to the output end of the rotating motor 52. The rotating motor 52 drives the cover plate 53 to rotate to adjust the flow area of ​​the exhaust pipe 54.

[0058] The outlet of the exhaust pipe 54 extends through the sealing membrane 21 into the space to be tested, so as to exhaust the space after the test is completed.

[0059] Specifically, the bracket is installed on the outer circumference of the horizontal tube 11, serving as support and connection. The rotary motor 52 is connected to the upper bracket 51, providing power to drive the cover plate 53 to rotate. The cover plate 53 is connected to the output end of the rotary motor 52, and its position is adjusted by the rotation of the motor. The exhaust pipe 54 contacts the cover plate 53 and is used to discharge the gas after the test is completed. The outlet of the exhaust pipe 54 passes through the sealing membrane 21 and extends outside the test space.

[0060] The rotating motor 52 drives the cover plate 53 to rotate via its output end. The rotation of the cover plate 53 changes the flow area at the outlet of the exhaust pipe 54. The rotation of the cover plate 53 controls the opening size of the exhaust pipe 54, thereby regulating the gas discharge flow rate.

[0061] By incorporating the exhaust assembly 5, exhaust control capability is provided for the carbon dioxide-based photosynthetic reaction benchmark measurement device. Through the coordination of the rotating motor 52 and the cover plate 53, the flow area of ​​the exhaust pipe 54 can be flexibly adjusted, ensuring that the gas can be quickly and completely discharged after the test. This improves the flexibility of the experiment and enhances the reliability of the test results.

[0062] In some embodiments, the carbon dioxide-based photosynthetic reaction benchmark measuring device further includes an impeller assembly 6, which includes a drive motor 61 and an impeller 62. The drive motor 61 is mounted on the heating component, and the impeller 62 is mounted on the output end of the drive motor 61. The drive motor 61, fixedly mounted on the heating component, drives the impeller 62 to rotate, improving the convection of the gas outside the plant specimen inside the test space, thereby improving the accuracy of data detection by the carbon dioxide reddening analyzer and the photosynthetic transpiration meter in the mounting base 3. A guide plate 63 can also be provided. The guide plate 63 can slow down the gas flow speed, improve the disorder of the gas flow, and also buffer the gas flow, thus providing a buffering and protective effect for the plant specimen.

[0063] In some embodiments, the carbon dioxide-based photosynthetic reaction benchmark measuring device further includes a clamp 7 and a fastener. The clamp 7 is disposed on the horizontal tube 11 in contact with the ground, and the fastener passes through the clamp 7 and the sealing membrane 21 and is connected to the ground. The fastener may be a bolt.

[0064] Furthermore, there are multiple clamps 7 and fasteners, with each clamp 7 corresponding to a specific fastener.

[0065] The use of multiple clamps 7 and fasteners enhances the stability of the horizontal tube 11, ensuring that the equipment will not shift due to external forces or vibrations during long-term operation. Applying pressure evenly through multiple fasteners ensures the sealing of the sealing membrane 21, preventing gas leakage and avoiding damage to the sealing membrane 21 due to shaking of the horizontal tube 11, thus improving the reliability of the measurement results. The multiple clamps 7 and fasteners can be adjusted according to actual needs to adapt to different installation environments and requirements. Enhanced stability and sealing reduce safety hazards during equipment operation and improve equipment safety. The above provides a detailed description of one embodiment provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A photometric device for measuring photosynthetic reaction based on carbon dioxide, characterized in that, include: The main frame assembly includes multiple horizontal tubes and vertical tubes that are detachably connected to each other. The multiple horizontal tubes are arranged at intervals in the vertical direction, and the multiple vertical tubes are arranged at intervals in the vertical direction, so as to place the plant to be tested between the horizontal tubes and the vertical tubes. A sealing membrane assembly, comprising a plurality of sealing membranes, wherein the sealing membranes wrap around the outer peripheral surface of the main frame assembly to form a space to be measured; A gas supply assembly, which passes through the sealing membrane assembly and is connected to the riser or horizontal pipe to supply gas with a preset temperature and carbon dioxide concentration to the space to be tested; A photosynthesis measurement component is disposed on the horizontal or vertical tube.

2. The carbon dioxide-based photosynthetic reaction benchmark measuring device according to claim 1, characterized in that, The riser and horizontal pipes are made of any one of polyvinyl chloride, polystyrene, and polymethyl methacrylate.

3. The carbon dioxide-based photosynthetic reaction benchmark measuring device according to claim 2, characterized in that, The sealing membrane is made of polyethylene, polyvinyl chloride and ethylene-tetrafluoroethylene copolymer, and the thickness of the sealing membrane is 0.06 mm to 0.1 mm.

4. The carbon dioxide-based photosynthetic reaction benchmark measuring device according to claim 1, characterized in that, The photosynthesis measurement assembly includes a carbon dioxide infrared analyzer, a photosynthetic transpiration meter, and a mounting base. The upper end of the mounting base is disposed on the horizontal tube, and the carbon dioxide infrared analyzer and the photosynthetic transpiration meter are respectively disposed in mounting grooves symmetrically opened on both sides of the mounting base.

5. The carbon dioxide-based photosynthetic reaction benchmark measuring device according to claim 4, characterized in that, The mounting base includes a base body and a screw rod. The upper end of the base body is threadedly connected to the lower end of the screw rod. The upper end of the screw rod is fixed to a horizontal tube. The base body can rotate relative to the screw rod to adjust the position of the mounting base in the vertical direction.

6. The carbon dioxide-based photosynthetic reaction benchmark measuring device according to claim 1, characterized in that, It also includes a heating assembly, which includes a heating element and a temperature monitoring element, both of which are mounted on the horizontal or vertical pipe.

7. The carbon dioxide-based photosynthetic reaction benchmark measuring device according to claim 6, characterized in that, It also includes an exhaust assembly, which is connected to the sealing membrane assembly. The exhaust assembly includes an upper bracket, a rotating motor, a cover plate, and an exhaust pipe. The upper bracket is disposed on the outer circumference of the horizontal pipe and is connected to the rotating motor and the exhaust pipe. The cover plate is connected to the output end of the rotating motor. The rotating motor drives the cover plate to rotate to adjust the flow area of ​​the exhaust pipe.

8. The carbon dioxide-based photosynthetic reaction benchmark measuring device according to claim 6, characterized in that, It also includes an impeller assembly, which includes a drive motor and an impeller. The drive motor is mounted on the heating component, and the output end of the drive motor is provided with an impeller.

9. The photosynthetic reaction benchmark measuring device based on carbon dioxide according to claim 1, characterized in that, It also includes clamps and fasteners, the clamps being mounted on the horizontal pipe in contact with the ground, and the fasteners passing through the clamps and sealing membrane to connect to the ground.

10. The carbon dioxide-based photosynthetic reaction benchmark measuring device according to claim 9, characterized in that, The number of clamps and fasteners is multiple, and multiple clamps are set one-to-one with multiple fasteners.

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