一、定义:在坡面上,每隔适当距离,沿等高方向所构筑之浅三角形沟。二、目的:减短坡长,分段截泄迳流以防止冲蚀;并提供田间作业道路。三、图说: 断面图四、应用说明: 1、以坡度40％以下之农地为原则。 2、配合草带法及外斜式平台阶段时,可适应较陡之坡地。 3、百喜草覆盖完密之园地,可适用至坡度55％。五、设计: 1、沟距:沟与沟间之地面距离,按垂直距离决定,其公式为: First, the definition: On the slope, every appropriate distance, along the direction of the construction of shallow triangular groove. Second, the purpose: to shorten the length of the slope, cut off the flow of sections to prevent erosion; and to provide field work roads. Third, the figure that: section IV, the application description: 1, to the gradient of 40% of the following farmland principle. 2, with the grass law and outside the ramp platform stage, the slope can be adapted to steep. 3, Bahia grass covered the garden, applicable to the slope of 55%. Fifth, the design: 1, Gully distance: Gully and ditch between the ground, according to the vertical distance of the decision, the formula is: