To provide a subsoiling digger-plow working machine used as a working machine for accelerating drying of the soil, to say nothing of plowing the soil of a farm field, and capable of conducting such working that a working width of the machine is larger than those of conventional small-size tractors. 圃場の土の耕起はもちろんのこと、土の乾燥を促進するための作業機で、小型のトラクタにより作業幅の大きい作業が行うことができるものを提供する - 特許庁