PROBLEM TO BE SOLVED: To solve the problem of a conventional work method for ridge forming, wherein the change of a travel direction such as a rearward travel, of a travel machine is necessary for the ridge-forming work of a field corner, and the operations of the travel machine and a ridge-shaping machine are complicated and works can not be smoothly performed.SOLUTION: The work method for forming ridge uses a ridge-forming machine having a ridge-forming work portion and mounted on a travel machine such as tractor, to perform the work, and has a ridge-forming work which forms a ridge, while the travel machine travels and enlarges a distance between the travel machine and the ridge before the travel machine is turned by an angle of 90 degrees and simultaneously performs a ridge-forming work at an approximately orthogonal field corner a ridge-forming work which turns the travel machine at an angle of 90 degrees and simultaneously forms a ridge at the approximately orthogonal field corner and a ridge-forming work which forms a ridge, while the travel machine travels and reduces a distance between the travel machine and the ridge after the travel machine is turned at an angle of 90 degrees and simultaneously performs a ridge-forming work at the approximately orthogonal field corner. A ridge-forming machine used for the ridge-forming method is also provided.COPYRIGHT: (C)2009,JPO&INPIT【課題】 圃場角部の畦成形作業において走行機の後進走行等の走行方向の変換が必要であり、走行機や畦成形機の操作が複雑で作業がスムースに行なえない課題があった。【解決手段】畦成形作業部を具備しトラクタ等の走行機に装着され作業する畦成形機を使用し、ほぼ直交する圃場角部において走行機が90度旋回しながら行なう畦成形作業の前に走行機が畦との間隔を離隔走行しながら畦を形成する畦成形作業と、ほぼ直交する圃場角部において走行機が90度旋回しながら畦を形成する畦成形作業と、ほぼ直交する圃場角部において走行機が90度旋回しながら行なう畦成形作業の後に走行機が畦との間隔を狭める方向に走行しながら畦を形成する畦成形作業とを有する畦成形作業方法及びそれに使用する畦成形機による。【選択図】 図7
