Automatic seedling feeding device for four-row rice blanket seedling transplanter and seedling feeding method of automatic seedling feeding device

The invention discloses an automatic seedling feeding device for a four-row rice blanket seedling transplanter and a seedling feeding method of the automatic seedling feeding device. Two longitudinal seedling feeding devices are arranged on a seedling feeding frame in an up-down spaced mode, and each longitudinal seedling feeding device is composed of two belt conveying assemblies; each driving roller of the belt conveying assembly is fixed with a driving transmission shaft, each driven roller is fixed with a driven transmission shaft, and the driving transmission shaft and the driven transmission shaft form a revolute pair with the seedling conveying frame; the conveying directions of the belt conveying assemblies are the same, and the top faces of the conveying belts of the two belt conveying assemblies of each longitudinal seedling conveying device are horizontally flush. The transverse seedling conveying device drives the seedling conveying frame to translate, and the translating direction of the seedling