本文论证用犂胫线外倾—α角(即使垡片截面由矩形变为平行四边形,见图1)的方法,可不遵循K>1.27法则,而设计出K≤1.27的窄幅犂体以适应我国精耕细作的农艺要求,尤其是适应水稻田的耕作。文中首先用数学分析方法,讨论了倾胫线犂的四种典型翻垡图形(见图1),说明耕翻后的垡片稳定性,除 This paper argues that the method of using the camber-alpha angle of the tilling line (even if the sliver section changes from a rectangle to a parallelogram, see Figure 1), does not follow the K> 1.27 rule and a narrow plow of K ≤ 1.27 is designed to accommodate Our agronomic requirements for intensive farming, especially for tillage in paddy fields. In this paper, we first discuss the four typical patterns of tilting trough plow (see Figure 1) by using mathematical analysis method,