The invention discloses a gravity
irrigation multi-layer track type
seedling car which comprises a car head, a car body and a car
tail. The car head, the car body and the car
tail are each provided with a
seedling carriage. Each
seedling carriage is provided with at least two
layers of seedling spaces. The bottom of each seedling space is sequentially provided with a
water storage plate, a slide wheel and guide rail set, a water partition plate and a seedling tray from bottom to top. Slide wheels matched with the corresponding slide wheel and guide rail set are arranged below each seedling tray. A water guide medium is connected between each
water storage plate and the corresponding seedling tray. A
liquid storage tank is arranged on the top of the first seedling
carriage and connected with the
water storage plate of the first seedling carriage through a pipeline. The water storage plate of the first seedling carriage is connected with the water storage plates of the other seedling carriages on the same layer in a waterproof mode. A connecting position for the seedling trays to enter and leave the
tail seedling carriage is arranged on the tail seedling carriage. The seedling car has the advantages of being natural in liquid supply, capable of saving energy and easy to install and use.