A device and application for simultaneous detection of plant photosynthesis and root oxygen secretion capacity

Abstract

The invention discloses a device for simultaneously performing plant photosynthesis and root system oxygen secretion capacity detection and its application. The device comprises a top-to-bottom illumination system unit, a multi-channel plant photosynthesis-oxygen secretion unit and an oxygen secretion detection unit; the illumination system unit is fixed on the multi-channel plant photosynthesis-oxygen secretion unit by a support; the multi-channel plant The photosynthetic-oxygen secreting unit includes a multi-channel plate, and several glass tubes, plugs and sealing rings used in conjunction with the multi-channel plate; several plate holes are arranged on the multi-channel plate; the edge of the glass tube protrudes outward, and the glass tube passes through The sealing ring is fixed on the plate hole; the glass tube is provided with a sampling port, and the sampling tube is sealed and connected with the glass tube through the sampling port; one end of the sampling tube is inserted into the bottom of the glass tube, and the other end is connected with a sampling device outside the glass tube; The oxygen leakage detection unit is an anaerobic operation unit with a multi-channel plate as the top. The device of the invention can perform in-situ detection of the oxygen secreting ability of the root system while the plant is photosynthesizing.

Description

technical field [0001] The invention relates to a device and method for detecting the oxygen secretion capacity of plant roots, in particular to a device and application for simultaneously detecting plant photosynthesis and root system oxygen secretion capacity. Background technique [0002] Wetland plants are an important part of constructed wetlands. They can purify water by directly absorbing and utilizing available nutrients in sewage, absorbing and enriching heavy metals and some toxic and harmful substances. Wetland plant roots have developed oxygen-secreting ability, and can form aerobic, micro-aerobic and anaerobic zones in the root zone, providing various suitable microenvironments for microorganisms, thereby enhancing the purification ability of constructed wetlands for sewage. Therefore, the oxygen secreting ability of wetland plants' roots is an important index to evaluate their sewage purification ability. [0003] At present, the methods for measuring the oxyg...

AI Technical Summary

Problems solved by technology

On the one hand, this type of anaerobic box is not equipped with a light layer, and the light intensity cannot be adjusted freely, and the light is very important for the photosynthesis of plants, which directly affects the oxygen secretion of the roots of the plants; The environment of inert gas itself will have an impact on the growth of plants, therefore, it cannot truly reflect the oxygen secreting capacity of plant roots

In addition, the above-mentioned anaerobic box is bulky, inconvenient to carry, and costly, and requires multiple vacuum pumps for the pumping process, which is not suitable for use in small laboratories

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