A method and device for measuring the physiological and electrical parameters of plant leaves and the water-holding capacity and conduction capacity of plant leaves

A plant leaf and measurement method technology, which is applied in the field of agricultural engineering and crop information detection, can solve the problems of inability to measure the water retention capacity and conductivity of plant leaves online, lack of comparability, poor repeatability of measurement results, etc.

Active Publication Date: 2021-09-10
JIANGSU UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for measuring the physiological electrical parameters of plant leaves and the water retention capacity and conduction capacity of plant leaves, so as to overcome the inability to measure the water retention capacity and conduction capacity of plant leaves online in the prior art, and the duplication of measurement results. Poor sex, lack of comparability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method and device for measuring the physiological and electrical parameters of plant leaves and the water-holding capacity and conduction capacity of plant leaves
  • A method and device for measuring the physiological and electrical parameters of plant leaves and the water-holding capacity and conduction capacity of plant leaves
  • A method and device for measuring the physiological and electrical parameters of plant leaves and the water-holding capacity and conduction capacity of plant leaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Taking the cell sap solute in the leaf as the dielectric, the leaf is sandwiched between two parallel plates of the parallel plate capacitor to form a parallel plate capacitance sensor. The physiological capacitance of plant leaves under different specific clamping forces can be obtained by adding a certain mass of iron, and the specific pressure will definitely lead to changes in the concentration of solutes in the cytosol in the leaves, thereby changing the elasticity and plasticity of the leaf cells, causing two capacitor plates. Changes in the dielectric constant and effective thickness of the cytosolic solutes in interleaf tissues, thereby affecting plant physiological capacitance.

[0045] The amount of water in plant cells is related to the elasticity of plant leaf cells. Under a specific clamping force, different plants have different physiological capacitances.

[0046] The Gibbs free energy equation is ΔG=ΔH+PV, and the energy formula of the capacitor is Amo...

Embodiment 2

[0096] Since ΔH is the internal energy of the system, and the intrinsic water storage potential (IRP, Intrinsic Reservoir Potential) of the plant leaf means that the leaf converts the internal energy of the system into water storage capacity, so it can be represented by -ΔH; that is to say, the inherent water storage potential of the plant leaf The calculation formula of water storage potential IRP can be expressed as: IRP=-ΔH=-0.5y 0 u 2 , will y 0 Substituting the test voltage U into the formula, the inherent water storage potential IRP of the plant leaves can be calculated.

[0097] due to y 0 It is a negative value, which can be characterized as the outward swelling pressure generated by the water storage inside the cells after the plant leaves are not stimulated, and the water storage force is the reaction force against the outward swelling pressure caused by the water storage inside the cells , when the internal and external pressure is offset, the capacitance value s...

Embodiment 3

[0115] Since the resistive current is caused by ion transport, it is determined by factors such as the permeability of the membrane to various ions and whether there are a large number of permeable ions. External excitation changes the permeability of ions, which affects the concentration of internal and external ions, and the difference between internal and external ion concentrations obeys the Nernst equation, while physiological resistance is inversely proportional to conductivity, and conductivity is proportional to intracellular ion concentration, which can be deduced , The relationship between the physiological resistance of the cell and the external stimulus.

[0116] The amount of water in plant cells is related to the elasticity of plant leaf cells. Under a specific clamping force, the permeability of different plant cell membranes changes differently, so their physiological resistance is different.

[0117] The expression of Nernst equation is as formula (4):

[011...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a method and device for measuring the physiological and electrical parameters of plant leaves, water retention capacity and conduction capacity of plant leaves. The foam boards are respectively glued to the bottom of the bracket and the plastic rods. Iron blocks of different qualities are added to the plastic rods to change the pressure of the device to adjust the clamping force. When in use, the plates are connected to the LCR tester through wires, and the two electrode plates will be tested. The plant leaves are clamped, different clamping forces are set, the physiological electrical parameters of the plant leaves are measured, the model of the physiological electrical parameters of the plant leaves is established, and the model is derived to obtain the conduction and water retention capacity of the plant leaves based on the physiological electrical parameters. The invention can conveniently, rapidly and quantitatively detect the hydraulic transport and water retention capacity of the plant leaves, and can quantitatively judge the material transport efficiency of the plant leaves, and the measurement results are comparable.

Description

technical field [0001] The invention belongs to the technical field of agricultural engineering and crop information detection, and in particular relates to a method and a device for measuring the physiological and electrical parameters of plant leaves, water retention capacity and conduction capacity of plant leaves. Background technique [0002] At present, when measuring the physiological and electrical parameters of plants, the repeatability is usually poor. Different people at different times and different places, or the same person at different times at different places, or even the same person, at the same place at different times, the results of measuring the leaves of the same state are quite different, which seriously affects the measurement. The accuracy of the results makes the measurement results difficult to analyze, let alone comparable. The reason is that different clamping forces are applied for each measurement, resulting in deviations in results. In order ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap