Seedling vegetable soilless culture equipment with automatic irrigation function

The utility model discloses an automatic irrigation seedling vegetable soilless culture device which comprises a sliding column, a culture dish and a supporting seat, the supporting seat is connected in the sliding column in a sliding mode and extends to the outside of the sliding column, the culture dish is movably placed on the surface of the supporting seat, a filter screen is inserted in the culture dish, and the filter screen is connected with the sliding column in a sliding mode. A sealing plate is inserted into the culture dish, the sealing plate is fixedly connected with the filter screen, a positioning mechanism is arranged in the supporting seat, the positioning mechanism comprises a connecting rod, a spring and an inserting rod, and the inserting rod is slidably connected into the supporting seat and extends into the sliding column. The spring is fixedly connected to the interior of the supporting seat and fixedly connected with the inserting rod, the culture dishes are of a hollow structure, and a