Automatic seedling feeding device based on narrow-plant-spacing eight-row leafy vegetable transplanter and control method

The invention discloses an automatic seedling feeding device based on a narrow-plant-spacing eight-row leaf vegetable transplanter and a control method, and belongs to the technical field of vegetable seedling transplanting operation devices. The seedling feeding device comprises a rack, a transmission part, a transplanting mechanism, a seedling feeding part and a hole seedling tray conveying part; the rack is provided with two supporting frames which are perpendicular to each other, the hole seedling tray conveying part is arranged on the bottom supporting frame, the transmission part is arranged on the upper frame, the transplanting mechanism comprises a moving frame, a transplanting arm, a guide rail I, a sliding block I and an electric push rod, and supporting columns on the two sides of the moving frame are connected with a ball screw linear module of the transmission part; two parallel guide rails I are arranged on the moving frame, the transplanting arm is provided with sliding blocks I connected with