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Measurement method and device for plant leaf conduction resistance and intrinsic conduction resistance based on physiological impedance

A plant leaf and measuring method technology, which is applied in the fields of agricultural engineering and crop information detection, can solve the problems of inability to measure physiological impedance and physiological current, poor repeatability of measurement results, and incomparability, achieving comparability and reducing edge effects. , the effect of simplifying the structure

Inactive Publication Date: 2018-09-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method and device for measuring the conduction resistance and inherent conduction resistance of plant leaves based on physiological impedance, to overcome the inability to measure physiological impedance and physiological current in the prior art, and the poor repeatability of the measurement results. defect of comparability

Method used

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  • Measurement method and device for plant leaf conduction resistance and intrinsic conduction resistance based on physiological impedance
  • Measurement method and device for plant leaf conduction resistance and intrinsic conduction resistance based on physiological impedance
  • Measurement method and device for plant leaf conduction resistance and intrinsic conduction resistance based on physiological impedance

Examples

Experimental program
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Embodiment 1

[0067] Embodiment 1: Take building a tree as an example. The fresh branches of the mulberry tree with leaves in different growth environments with relatively consistent growth were picked on the campus of Jiangsu University for measurement, and the inherent conduction resistance of the leaves of the mulberry tree and the leaf conductance when the angle between the leaves and the ground is 30° were quickly detected. resistance.

[0068] Step 1, connecting the measuring device with the LCR tester;

[0069] Step 2, select the fresh branches of the mulberry tree with leaves growing on the waterside and in the soil, and wrap the base of the branches with wet cotton to slow down the water loss;

[0070] Step 3, quickly return to the laboratory, after cleaning the dust on the surface of the leaves on the fresh branches, pick leaves that are more consistent in growth on the fresh branches;

[0071] Step 4: Clamp the blade between the parallel plates, set the measurement voltage to 1...

Embodiment 2

[0086] Embodiment 2: taking mulberry as an example, the fresh branches of mulberry with leaves are measured under the relatively consistent different growth environments of the Jiangsu University campus, and the inherent conduction resistance of the mulberry leaves is quickly detected and the angle between the leaves and the ground is Blade conduction resistance at 30°. All steps are with embodiment 1.

[0087]Setting measuring voltage 1.5 volts, measuring frequency is 3000Hz, and the measured mulberry leaf physiological impedance under different clamping forces is as shown in table 5. The coupling model of plant leaf physiological impedance and clamping force change derived based on the Nernst equation and various parameters are shown in Table 6; the coupling model equation of mulberry leaf physiological impedance under different clamping force changes is derived from the clamping force , obtain the mulberry leaf conduction resistance equation based on physiological impedanc...

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Abstract

The invention discloses a measurement method and device for plant leaf conduction resistance and intrinsic conduction resistance based on physiological impedance. The measurement device includes a bracket, foam boards, electrode plates, wires, iron blocks and plastic rods; the foam boards inserted with the electrode plates are bonded to the bottom of the bracket and the plastic rods respectively,the iron blocks different in mass are added to the plastic rods to change the pressure of the device, and therefore a clamping force is adjusted; during use, the electrode plates are connected to an LCR testing instrument through the wires, the two electrode plates clamp a plant leaf to be measured, the value of the clamping force is set differently, the physiological impedance of the plant leaf is measured, a coupling model of the physiological impedance of the plant leaf under different changes of the clamping force is created, and derivation is conducted on the model to obtain the plant leaf conduction resistance and intrinsic conduction resistance based on the physiological impedance. The plant leaf conduction resistance can be conveniently, quickly and quantitatively measured, the plant leaf substance conductance performance can be quantitatively judged, and the measurement result has comparability.

Description

technical field [0001] The invention belongs to the technical field of agricultural engineering and crop information detection, and specifically relates to a method and device for measuring the conduction resistance and inherent conduction resistance of plant leaves based on physiological impedance, which can conveniently, quickly and quantitatively detect the hydraulic conductance capacity of plant leaves. Quantitatively judge the material transport performance of plant leaves. Background technique [0002] Plant cells are composed of two parts, the cell wall and the protoplast, which is composed of the living substance - protoplast. Two main electrolytic inclusions: the vacuole and the cytoplasm are surrounded by the tonoplast and plasma membrane, respectively. The cytoplasm contains a large number of organelles surrounded by specific membranes, and the water-soluble solution in the vacuole mainly contains inorganic ions and organic acids. Current passing through the cel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04
CPCG01N27/041
Inventor 吴沿友黎明鸿吴明津邢德科刘宇婧姚香平于睿徐小健毛罕平
Owner JIANGSU UNIV