Device for measuring temperature control range of system by expanding photosynthesis by using cyclic alcohol

Abstract

The invention discloses a device for measuring a temperature control range of a system by expanding photosynthesis by using circulating alcohol. Cooled or heated liquid alcohol is conveyed by a circulating pump, and is conveyed to a metal component (which internally comprises multiple water channels where the alcohol flows) which is in tight fit with an LI-6400XT photosynthesis measurement chamberthrough a PVC pipe, and temperature of the metal component is changed; temperature of the photosynthesis measurement chamber is gradually adjusted by using a heat exchange process; finally, the temperature control range of a portable photosynthesis measurement system (LI-6400XT) is effectively expanded. The device enables the LI-6400XT portable photosynthesis measurement system to expand the range of leaf chamber temperature from an original range that is ambient temperature - 7 DEG C to the ambient temperature + 7 DEG C to 5 to 40 DEG C, so that photosynthesis parameters, which are measuredin the field, of a plant / crop are no longer limited by external ambient temperature. Therefore, a measurement technology and method are provided for deep exploration of response and adaptation mechanisms of a physiological and ecological process of the plant / crop to the temperature under the field condition.

Description

technical field [0001] The invention belongs to the technical field of monitoring plant physiological and ecological parameters in the field, and relates to a device for extending the temperature control range of a photosynthesis measurement system by circulating alcohol. Background technique [0002] The LI-6400XT portable photosynthesis measurement system developed and manufactured by LI-COR Company of the United States represents the highest level of related instruments for monitoring the photosynthesis process of plants / crops at the leaf level. LI-6400XT portable photosynthetic measurement system can control the temperature, CO 2 Concentration, relative humidity, light intensity and other related environmental factors. LI-6400XT solves many problems in measuring photosynthesis parameters in the field. For example, the equipped red and blue light sources can accurately control the light intensity in the leaf chamber, but it will not change the temperature in the leaf cha...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the temperature adjustment range of the LI-6400XT portable photosynthetic measurement system is very limited, which becomes a key bottleneck problem for monitoring photosynthetic parameters of plants / crops under field conditions, and it is urgent to realize the technical control of LI-6400XT. -The 6400XT portable photosynthetic measurement system has effectively expanded the temperature adjustment range, thereby providing measurement technical support for monitoring the response of plant / crop physiological and ecological processes to temperature under field conditions

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