Composite soil plate for tree planting

The invention belongs to the technical field of composite soil plates, and particularly relates to a composite soil plate for tree planting. The composite soil plate comprises a plate body, a limiting block and a wood chip water absorption layer, wherein a waterproof film is mounted above the plate body, a seed groove is reserved in the middle of the waterproof film, a first clay block is mounted on one side of the plate body, a second clay block is mounted on the other side of the plate body, the limiting block is located above the second clay block, and a mounting plate is mounted on the inner side of the limiting block. Compared with an existing composite soil plate device, the composite soil plate for landscaping tree planting can prevent uneven absorption of nutrients for tree growth caused by too close trees, can prevent the trees from being blown down in a heavy rain and strong wind environment caused by unstable tree planting, and effectively prevents a large amount of soil moisture in the plate body from being evaporated; and when a user needs to move and transport the plate body, the plate body can be detached, transported and moved at any time, and underground water can be absorbed and stored for providing water for subsequent growth of garden trees.