论文部分内容阅读
梯田横向打垄有的起不到拦蓄雨水的作用,坡地仍有“打沟”现象。分析其原因:一是坡地上部的滚坡水直穿坡田,二是横向打垄不等高,加之降水集中所造成的。针对这种情况,在坡地上应修截水埂,横向打垄要等高。截水埂可截留梯田以上荒地滚坡水,防止其侵入梯田,冲毁垄台。截水埂要修在坡田的上端与荒坡接壤处。埂高0.4～0.5米,上宽0.4米,
Some of the horizontal terraced rice fields can not play the role of blocking rainwater. There are still “open ditches” on the slopes. Analysis of the reasons: First, the slope of the upper part of the slope sloping water straight slope fields, and second, the horizontal ridge is not equal, combined with precipitation caused by concentration. In view of this situation, water cut in the slope should be cut off water, horizontal ridge ridge to contour. Water cutoff 截 can be cut off above the terrace wasteland slope water, to prevent its invasion of terraced fields, washed away monoliths. Water cut 埂 to repair slope in the upper end of the border with the shortage of wasteland.埂 0.4 to 0.5 meters high, 0.4 meters wide,