Screening method and screening device of drought enduring plants

The invention relates to the technical filed of plant breeding, in particular to a screening method and a screening device of drought enduring plants. The screening method comprises the following steps: selecting and using a plurality of two-year-old robust cutting seedlings or seedlings of common afforestation trees and shrubs, and measuring the initial root conditions and heights of the two-year-old robust cutting seedlings or seedlings; carrying out simulation of a desert arid environment inside a simulation box, wherein the simulation box comprises a plurality of simulation areas; settingdifferent rainfall degrees in the different simulation areas, and planting plants inside sandy soil layers arranged at the bottoms of the simulation areas respectively, under the temperature varying condition of 10 to 42 DEG C, simulating the sunlight of 12 to 16 h/d with the illumination intensity of 4000 to 9000 lx by using fluorescent lamps, and after planting for 14 to 20 d, measuring the rootsystem conditions and hei