PROBLEM TO BE SOLVED: To perform optimal ground leveling with a small number of parts and less work for the parts.SOLUTION: A ground-leveling cover 1 is equipped with a cover body 30, installed on the lower end side of a rear cover 15 covering the rear of a tilling part 11 and having a ground-leveling surface a and a mounting member 31 for making the cover body 30 engage with an engaging member 24 on the lower back surface of the rear cover 15 so as to be freely disengageable. Both the right and left sides of the cover body 30 are closed to form a cavity body 30A having a flat space K long in the front and the rear, when viewed from the side, and the ground-leveling surface a is formed on the undersurface of the cavity body 30A to join the mounting member 31 to the top surface b.COPYRIGHT: (C)2008,JPO&INPIT【課題】 部品点数及び部品の加工が少なくかつ最適な整地ができるようにする。【解決手段】 整地カバー1は耕耘部11の後方を覆うリヤカバー15の下端側に備えられていて、整地面aを有するカバー本体30と、このカバー本体30をリヤカバー15の下部背面の係止部材24に係脱自在に係止させる装着部材31とを有する。前記カバー本体30は左右両側が閉鎖されていて側面視において前後に長い扁平状の空間Kを有する空洞体30Aを形成し、この空洞体30Aの下面に整地面aを形成し、上面bに前記装着部材31を接合する。【選択図】図1