Combined seedling raising substrate plate structure

The utility model relates to the technical field of agriculture, in particular to a combined seedling raising substrate plate structure. The utility model provides a combined type seedling raising substrate plate structure which can effectively utilize vertical space, increase seedling raising density and save occupied area of a seedling raising area. A combined seedling raising substrate plate structure comprises four connecting frames, telescopic rods, fixing frames, fixing screws and the like, the connecting frames are symmetrically arranged front and back, the left portion and the right portion of each connecting frame are each connected with at least two fixing frames, and the fixing screws are connected between the fixing frames and the adjacent connecting frames in a threaded mode. A telescopic rod is connected between every two adjacent fixing frames on the same horizontal plane in a sliding mode. According to the utility model, the plurality of cultivation trays are sequentially placed in a butt join