宁城县地广人稀,劳力不足,坡耕地多,2度以上的坡耕地近120万亩,水土流失严重,影响农业产量迅速提高。1966年,我县初次搞了人工配合五铧犁修梯田的试验,效果较好,加快了梯田建设速度。此后,经过十多年反复试验和推行,目前应用的主要有下面两种方法。 Ningcheng County, sparsely populated, lack of labor, slope farmland more than 2 degrees slope farmland nearly 120 acres, serious soil erosion, affecting the rapid increase in agricultural output. In 1966, for the first time in our county, the experiment of manually cultivating five plows to cultivate terraces was conducted with good results and speeding up the construction of terraced fields. Since then, after more than a decade of trial and implementation, the following two methods are currently used.