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八十年代中后期,机修梯田技术在吕梁山区坡耕地治理中逐步得到推广。机修梯田以其条幅宽展,地面平坦,保土保肥,易于机械化耕作和便于实施农业丰产综合技术等特点深受山区广大干部群众的欢迎。但由于宽幅水平梯田的建设,使地埂加高,如修硬埂,不仅大大增加了人工修筑地埂的难度,而且埂体水分损失较大,往往不稳固、易坍塌。针对这一状况,1987年柳林县群众创造了生物经济埂水平梯田模式,改变了以前改
In the mid-to-late 1980s, the mechanical terrace technology was gradually popularized in slope farmland management in Luliang Mountain. Machine-made terraces with its wide banner width, the ground is flat, soil conservation and fertilizer, easy mechanized farming and easy implementation of comprehensive agricultural technology and other characteristics by mountain cadres and the masses welcome. However, due to the construction of wide-scale terraced fields, the elevation of the ground 埂, such as repairing the ground 不, not only greatly increases the difficulty of building the ground 人, but also the loss of body moisture is large and often unstable and easily collapsed. In response to this situation, the masses in Liulin County in 1987 created a horizontal bio-economic terrace pattern, changed the previous change