二十里卜大队有坡耕地1300多亩,占总耕地面积的三分之一。在1964—1965年大规模治理坡耕地运动中,由于突出政治,坚持四个第一,活学活用毛主席著作,在大寨的革命精神鼓舞下,在实践中创造了“三巧、两高、一管理”的治理经验,从而大大加快了治田进度,1965年实现了全大队坡地梯田化,并且使这一经验在全县得到推广。实践证明,在山区丘陵区修梯田,采用二十里卜的经验,效果很好。 Twenty Li Bu brigade slope 1300 acres of cultivated land, accounting for one-third of the total arable land. In the 1964-1965 large-scale sloping land management campaign, due to highlight the politics, adhere to the four first, live and learn to use Chairman Mao’s work, inspired by the revolutionary spirit of Dazhai created in practice, “three Qiao, two high , A management of ”management experience, which greatly accelerated the progress of governing the field, in 1965 to achieve full terrace slope terraformization, and to make this experience in the county to be promoted. Practice has proved that in the hilly areas of mountainous terraces, the use of twenty li Bu’s experience, the effect is very good.