Device and method for measuring living body electric conductivity of plant leaf

A plant leaf and measurement method technology, which is applied in the field of measuring plant physiological and biochemical indicators, can solve the problems of time-consuming, complicated test methods, and inability to measure the electrical conductivity of living plant leaves, so as to achieve the effect of ensuring accuracy and simple test methods

Inactive Publication Date: 2014-07-30
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide a device and method for measuring the electrical conductivity of living plant leaves, so as to overcome the defects that the existing measurement methods cannot measure the electrical conductivity of living plant leaves in real time on site, and the testing methods are complex and time-consuming.

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  • Device and method for measuring living body electric conductivity of plant leaf
  • Device and method for measuring living body electric conductivity of plant leaf
  • Device and method for measuring living body electric conductivity of plant leaf

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Embodiment Construction

[0039] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] Generally, for a regular wire (the cross-sectional area does not change), the electrical conductivity (σ) has the following relationship with the current (I) passing through the wire and the voltage drop (V) at both ends of the wire.

[0041] σ = k I V - - - ( 1 )

[0042] In the formula, k is a constant related to the cross-sectional area and length of a regular wire. For a fixed wire, k is constant, and the conductivity (σ) is easy to find.

[0043] However, when applied to plants, since the living plant leaf is ...

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Abstract

The invention relates to the technical field of physiological and biochemical index measurement for plants, particularly to a device and a method for measuring living body electric conductivity of a plant leaf. The device for measuring living body electric conductivity of the plant leaf includes a sensor and a microcontroller, wherein the sensor and the microcontroller are connected with a power source conversion unit respectively; the sensor is connected with a constant-current source circuit and used for collecting, converting and amplifying electric conductance signals of the leaf of the plant living body; and the microcontroller is connected with a signal processing unit and used for receiving the data processed by the sensor, processing and calculating the data, and displaying and storing the processed data. The device and the method for measuring the living body electric conductivity of the plant leaf can be used for real-time on-site measuring the electric conductivity of the leaf of the plant living body and knowing the growth condition of the plant at the very first time; and the measuring method is simple, convenient and quick, and can also guarantee the accuracy of the electric conductivity measurement.

Description

technical field [0001] The invention relates to the technical field of measuring plant physiological and biochemical indicators, in particular to a device and method for measuring the electrical conductivity of plant leaves in vivo. Background technique [0002] Generally, the electrical conductivity of plant leaves is an important physiological and biochemical index reflecting the growth status of plants. When the plant is subjected to stress or other damage, the cell membrane is easy to rupture, resulting in damage to the membrane protein, which causes the extravasation of the cytoplasmic cytosol and increases the relative conductivity, which directly reflects the environmental or nutrient stress of the plant. There are two commonly used methods for the conductivity of plant leaves: the pumping method and the soaking method. Although these two methods are standard methods and the measurement results are stable, the test process is complicated and time-consuming, and canno...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/02
Inventor 李民赞王琢孙红杨玮
Owner CHINA AGRI UNIV
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