CONSTRUCTION METHOD OF SOLID AND DENSE BANK FOR SUPPRESSION OF SOIL RUNOFF, AND CONSTRUCTION DEVICE

摘要

To provide a method for suppression of soil runoff from a farm land and a construction device used therefor.SOLUTION: A construction method of a solid and dense bank in a soil layer for suppression of soil runoff from a farm land comprises: plowing, at a predetermined plowing depth, solid and dense unplowed soil 10 by a tiller attached to a tractor while advancing the tractor; lifting the tiller upward above the ground surface at a predetermined position in an advancing direction; advancing the tractor by a predetermined distance in such a state; and constructing a solid and dense bank 12 at a non-plowed part by lowering the tiller to the predetermined plowing depth and restarting plowing, wherein the solid and dense bank 12 at the non-plowed part has a length corresponding to the advanced distance while lifting the tiller and a width of the tiller, and is formed with the solid and dense unplowed soil 10.SELECTED DRAWING: Figure 5