Lightweight substrate cultivation device for seedling raising

The utility model discloses a seedling raising light substrate cultivation device in the technical field of seedling cultivation devices, which comprises a base, a vertical rod and four cultivation trays, each cultivation tray comprises a cross fixedly sleeved on the outer wall of a first sleeve and a round surrounding edge connected with the outer end of the cross, and the number of the cultivation trays is four. The four cultivation trays are the first cultivation tray, the second cultivation tray, the third cultivation tray and the fourth cultivation tray respectively, the first cultivation frame, the second cultivation frame and the third cultivation frame are distributed in a stacked mode from top to bottom, mutual shading is avoided, and reflective surrounding plates are arranged on the outer sides of the second cultivation tray, the third cultivation tray and the fourth cultivation tray and can rotate. Sunlight projected by the side edge of the cultivation plate can be adjusted, the photosynthesis effi