Plant 13CO2 mark cultivation-root exudate collection integration device

The invention discloses a plant 13CO2 mark cultivation-root exudate collection integration device, which comprises two parts of an upper mark box and a lower plant root box, wherein an air mixing device and a 13CO2 injection port which is provided with a sealing plug are arranged on the mark box, the plant root box is separated into a left soil chamber, a root growing chamber and a right soil chamber through nylon nets from left to right, the inner sides of the left and the right soil chambers are separated by the nylon nets into a plurality of longitudinal interlayers, and micro soil solution collectors are respectively embedded in each interlayer and the root growing chamber. The device has the characteristics of simple structure, small occupied area and low cost, can realize the in-situ collection and analysis of root exudates under the premise of not damaging the root growth, and accordingly, various organic matter types of root exudates and the distribution characteristics of the root exudates in the rhi