Plant transpiration measuring device

Abstract

The invention discloses a plant transpiration measuring device. The device comprises an observation room, a condensation system, a water collection measuring component and an exhaust component, wherein the observation room is of a container structure that one end of the observation room is provided with an inlet, while the other end thereof is provided with an outlet; the outlet of the observation room is communicated with one end of a cooling tube of the condensation system; the other end of the cooling tube is communicated with the water collection measuring component; the cooling tube is communicated with the exhaust component; and the bottom of the water collection measuring component is provided with a gravity measuring component. The measuring device not only has the advantages of simple structure, easy manufacturing, convenient carrying, low price and convenient operation and use, but also has excellent measuring effect and can directly measure transpiration water consumption data of plant branches or plants.

Description

technical field [0001] The invention relates to a transpiration measuring device, in particular to a portable plant transpiration measuring device. Background technique [0002] Plant transpiration is an important physiological function of plants. Transpiration refers to the process in which water in plants loses into the atmosphere in the form of gas through stomata. It can be divided into cutin transpiration, lenticel transpiration and stomatal transpiration. Transpiration is of great significance to plants. The pulling force generated by transpiration is the driving force for water absorption, the driving force for the transportation of water and inorganic salts in plants, and it can also reduce the temperature of the leaf surface to avoid sunburn. As a key part of the "soil-vegetation-atmosphere" system, transpiration is also one of the important research contents of plant physiology, ecology, agronomy and forestry. Different from the evaporation process in physics, tra...

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Problems solved by technology

Different from the evaporation process in physics, transpiration is not only affected by external environmental conditions, but also regulated and controlled by the plant itself, so it is a complex physiological process, and it is difficult to measure. At present, the most commonly used The measurement means is to use plant transpiration measuring instruments to measure. There are many kinds of plant transpiration measuring instruments, such as Li-6400 photosynthesis measuring system, CB-1101 photosynthetic transpiration measuring system, CAF tree transpiration flow measuring system, weighing type lysimeter It can be said that they each have their own strengths, but they have not been widely recognized and widely used by relevant researchers.

Looking at these plant transpiration measuring instruments, there are at least the following shortcomings and deficiencies: ①It can only be used to measure the transpiration of a single leaf, and the measured value is converted into a branch or plant transpiration, and the conversion process is complicated; ②The price is high; ③The requirements for the measurement environment Higher, otherwise the measured value is inaccurate; ④ complex structure, inconvenient to operate; ⑤ complex principle, difficult to understand and grasp; ⑥ bulky, inconvenient to carry

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