Adjustable isotope labeling device for plant photosynthesis

Abstract

The invention provides an adjustable isotope labeling device for plant photosynthesis. The device is characterized in that organic glass 1 and a sealing ring 2 form an external circulating leaf chamber 3, the external circulating leaf chamber 3 is communicated with a carbon dioxide absorption tank 11 through an organic hose 13, the external circulating leaf chamber 3 is communicated with a circulating pump 4 through an organic hose 5, the external circulating leaf chamber 3 is fixed on a multi-angle fixing frame 6 through a metal supporting rod 7, a carbon dioxide concentration detection probe 8 is arranged in the external circulating leaf chamber 3 and is communicated with a carbon dioxide detector 10 through an optical fiber 9, the carbon dioxide absorption tank 11 is communicated with the circulating pump 4 through an organic hose, a carbon dioxide supply pipe 12 is communicated with the organic hose 5 through a three-way electronic control valve, carbon dioxide supply is guaranteed by electronically controlling the flow speed of carbon dioxide, and a carbon dioxide storage tank 15 is communicated with the three-way electronic control valve and the organic hose 5 through the carbon dioxide supply pipe 12.

Description

technical field [0001] The invention belongs to the technical field of plant photosynthesis detection, and in particular relates to an adjustable isotope labeling device for plant photosynthesis. Background technique [0002] At present, there are portable photosynthetic instruments such as Licor-6800, LCi-SD, and CIRAS-3 on the market, which provide technical means for measuring photosynthesis for plant ecology research. This type of photosynthetic instrument is more suitable for indoor control experiments. However, in field experiments, because the air inlet pipe is not isolated from the outside world, it is easily disturbed by human breathing and ground activities on the ground, resulting in uneven air in and out. The leaf chamber of the leaf is too small and the growth angle of the plant leaf is different, which directly affects the accuracy of plant photosynthesis. [0003] Chinese patent application 201310682081.3, the title of the invention is "rapid measurement devi...

AI Technical Summary

Problems solved by technology

Although the invention uses a fan to circulate the self-made leaf chamber, it cannot make the air in the leaf chamber uniform and cannot measure blades with different angles. The size of the leaf chamber cannot be adjusted with the size of the blade, and it is not suitable for high-precision measurement of a single blade.

[0012] It can be seen that neither the measurement method using the classic Licor-6800 photosynthetic measuring instrument or a similar improved device, nor the existing real-time online large-area photosynthetic method can meet the requirements of accurately measuring the photosynthesis produced by a single leaf in different growth directions (angles). The purpose of the intensity of photosynthesis, and the stability of carbon dioxide concentration cannot be guaranteed during the long-term measurement process

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