通过许多灌溉地的观测使我们认识到,大多数垄沟灌溉地上流失的泥沙是在沟的末端几米处产生的。尾水渠的清理工作,导致尾水流速很快,坡度增加,侵蚀能量也随着增大,使田的下游靠近尾水渠边沿被侵蚀成凸形,垄沟逐渐变成窄狭的沟道,深度达到耕作层或更深。 该文报道了一种控制垄沟尾部侵蚀的新方法,并对这种埋管系统的发展作出评价。 Observations from many irrigated lands have led us to realize that most ditches irrigated with sediment are produced a few meters distal to the ditch. Tail canal cleaning work, resulting in tail water flow rate quickly, slope increases, erosion energy also increases, so that the downstream edge of the trenches near the edge of the erosion was convex into a ditch gradually narrow narrow channel depth reached Tillage layer or deeper. This paper reports on a new method of controlling the erosion of the tail of the furrow and evaluates the development of the buried pipe system.