PROBLEM TO BE SOLVED: To provide a plowing implement with an apron flip-up auxiliary device, which is configured so that a gas spring is never damaged due to a contact with an obstacle during work, and the degree of freedom for the attachment position of the gas spring is enhanced.SOLUTION: In a plowing implement 1, the upper side of a working rotor rotatably supported by an implement body 10 is covered with a shield cover 22, and an apron 25 is vertically rotatably connected to the rear end of the shield cover 22. The plowing implement 1 is provided with an apron flip-up auxiliary mechanism 40 which includes: a gas spring the front side of which is longitudinally movably supported by a support plate 43 provided above the shield cover 22 and the rear side of which is rotatably connected to the upper side of the shield cover 22 and a link arm member 60 the front side of which is supported longitudinally movably with the front side of the gas spring by the support plate 43 and the rear side of which is rotatably connected to a bracket seat 26 provided on the upper surface of the apron 25.COPYRIGHT: (C)2014,JPO&INPIT【課題】作業中にガススプリングが障害物に接触して損傷する虞がなく、またガススプリングの取り付け位置の自由度が大きいエプロン跳ね上げ補助装置を備えた耕耘作業機を提供する。【解決手段】耕耘作業機1は、作業機本体10に回転可能に支持された作業ロータの上方がシールドカバー22によって覆われ、シールドカバー22の後端部にエプロン25が上下方向に回動自在に設けられる。耕耘作業機1には、前側がシールドカバー22の上方に設けられた支持板43に前後方向に移動自在に支持され、後側がシールドカバー22の上方に回動自在に接続されたガススプリングと、前側が支持板43にガススプリングの前側とともに前後方向に移動自在に支持され、後側がエプロン25の上面に設けられたブラケット座26に回動自在に接続されたリンクアーム部材60とを備えるエプロン跳ね上げ補助機構40が設けられる。【選択図】 図1