Overflow pipe and seedling raising plate

The utility model provides an overflow pipe and a seedling raising tray, and relates to the technical field of seedling raising cultivation, the overflow pipe comprises a pipe body, a siphon channel and an overflow channel are arranged in the pipe body, the overflow channel penetrates through the pipe body, the siphon channel comprises a siphon inlet and a siphon outlet, and the overflow channel comprises an overflow inlet and an overflow outlet. And the siphon inlet is lower than the overflow inlet. Through the arrangement of the overflow pipe, two functions of siphoning and overflowing are achieved, various circulation modes can be switched conveniently in circulation type planting, tidal type circulation can be achieved, and more mode choices are provided for the seedling raising process. And the siphon channel is arranged, so that the outflow circulation of water can be realized without excessive water injection when the seedling raising plate is cleaned, and the water resource for cleaning is saved. 本实用新