Test model and test method for water storage and water retention maintenance of rocky desertification side slope vegetation plate-groove combination

The invention discloses a test model and test method for water storage and water retention maintenance of rocky desertification side slope vegetation plate-groove combination. The test model comprises a test tank body formed by combining a grating plate and organic glass, a soil body, an anti-permeation protection layer, a water storage layer or a water storage cavity, a water absorption belt, plants, a rainfall simulation device and a supporting structure. The bottom plate of the test tank body forms a corresponding gradient through the support structure according to the gradient support of the simulated rocky desertification side slope, the anti-permeation protection layer covers the lower side wall of the test tank body and the bottom plate, and the water storage layer is formed by stacking broken stones in a corner formed by the lower side wall of the test tank body and the bottom plate. The water storage cavity is erected between the lower side wall and the bottom plate of the test tank body through a gr