Method and device for quickly measuring photosynthesizing speed of delay light generated by visiblelight inducing

A technology for delaying luminescence and photosynthetic rate, applied in measuring devices, material excitation analysis, instruments, etc., can solve the problems of not being able to reflect the photosynthetic rate, inconsistent environmental conditions, unfavorable popularization and use, etc., to achieve popularization and promotion, easy implementation, The effect of easy operation and use

Inactive Publication Date: 2002-12-25
SOUTH CHINA NORMAL UNIVERSITY
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Problems solved by technology

Therefore, it often takes a long time to measure a valid set of data
(2) Since the measurement lasts for a long time, and the external environmental state is changing all the time, the measured data is a series of random numbers, which cannot reflect the photosynthetic rate of the measured plant under the physiological conditions at that time
(3) The design of the leaf chamber limits the measurement of the blade
Due to the fixed size of the leaf chamber, the measurement of the blade surface is too large or too small will bring inconvenience to the measurement, and even bring errors to the measurement results
(4) Due to the respiration and transpiration of plant leaves during the measurement process, the environmental conditions in the leaf chamber (CO 2 Concentration, humidity, etc.) are inconsistent with the external conditions, and the instrument itself cannot compensate for the difference well
(5) The cost of the instrument is relatively expensive, which is not conducive to the popularization and use in agricultural production

Method used

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  • Method and device for quickly measuring photosynthesizing speed of delay light generated by visiblelight inducing
  • Method and device for quickly measuring photosynthesizing speed of delay light generated by visiblelight inducing
  • Method and device for quickly measuring photosynthesizing speed of delay light generated by visiblelight inducing

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Embodiment 2

[0031] According to the above operation steps, the photosynthetic rate of the plant Hibiscus hibiscus was measured. The reconstructed image as image 3 As shown, the corresponding average photosynthetic rate is 3.6ppm / scm 2 .

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Abstract

A fast measuring method and a device for the photosynthetic speed of delayed light generated by plant leaf under induction of visual light are disclosed. Said method incldues such steps as visual light induction of plant leaf for generating delayed light, converting the light to electric signal, A / D conversion, data processing to obtain light intensity, and searching a match in database to obtainits photosynthetic speed. Said device is composed of light exciting module, light receiving module, A / D converter, computer and data processing software.

Description

(1) Technical field [0001] The invention relates to a photosynthetic rate measurement technology, in particular to a method and a device for detecting the photosynthetic rate by using delayed luminescence induced by visible light. (2) Background technology [0002] At present, in the measurement of photosynthetic rate, the widely used instrument is LI-62XX series photosynthetic rate measuring instrument. The principle is based on the CO of the blade in unit time and unit area 2 The amount of reduction to determine the photosynthetic rate of leaves. There are many problems in this instrument, which are mainly manifested in the following aspects: (1) The instrument is seriously restricted by external environmental factors during the measurement process. Such as light intensity, humidity, CO 2 Instantaneous changes in concentration will bring great differences to the measurement results. Therefore, it often takes a long time to measure a valid set of data. (2) Since the me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63G01N33/483
Inventor 邢达王成龙
Owner SOUTH CHINA NORMAL UNIVERSITY
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