| 摘要 |
PROBLEM TO BE SOLVED: To aim at the improvement of drainage caused by a compaction effect at a gutter bottom part during ridging.SOLUTION: A ridging device is provided by mounting a tilling rotary 6 and a plurality lines of ridge-forming tools 7, 7 comprising a pair of piece ridging plates 40, 40, for receiving tilled soil at the rear direction of a tractor vehicle body 1, installing rollers 41, 41 pressing the gutter bottom part B of a furrow at the rear direction of the ridge-forming tools 7, 7, and as accompanying with the movement of the rollers 41, 41, pressing the side surface lower part of the formed ridge and the gutter bottom part B formed at the right and left furrows and at the same time pressing the lower end side of right and left slope of the ridge for hardening by setting the width W of the rollers 41, 41 larger than the interval L of the piece ridging plates 40, 40 opposing by placing the gutter bottom part B between the adjacent ridges. |
