兴修水平梯田,是水土保持中主要的措施之一,但是,随着大面积水平梯田的兴修,给维护工作带来巨大的工作量;同时梯田埂坎将占去部分耕地,能把这些埂坎加以利用,将给农村经济带来大量收入。估计每亩梯田埂长度约在100米左右,如能充分利用起来,作到养护与利用结合,在节约维修劳力和增加副业收入上都是相当可观的。梯田埂坎损坏的原因根据调查,一般梯田埂坎的破坏,大半是由于①黄土质地松散,经暴雨长期冲刷后黄土颗粒逐渐剥落,田埂断面日渐缩小,汛期蓄水后因断面应力承受不了蓄水压力而被冲垮决口;或者因断面过小而冲垮。②梯 The construction of horizontal terraces is one of the major measures in soil and water conservation. However, with the renovation of vast terraced terraces, great workload has been brought to the maintenance work; at the same time, the terraced fields will occupy part of the arable land, Make use of, will bring a lot of income to the rural economy. It is estimated that the length of rice terrace per mu is about 100 meters. If it can be fully utilized, the combination of conservation and utilization will be considerable in saving labor and increasing sideline income. According to the survey, most of the damage of terrace ridge is due to loosen texture of loess, loess particles gradually peeled off after long-term erosion by rainstorms, and the cross-section of field ridge is gradually reduced. Due to the stress of section failure, Pressure was burst burst; or because the section is too small and broke. ② ladder