延安县城关人民公社在尹家沟治山战区结合工地整风,发动群众大闹技术革新和工具改革,掀起了“学、赶、比、帮”的劳动竞赛高潮。普遍采用了耕犁松土法与刮土板、鉄刮板等先进工具,上述方法与工具的结合,把修水平梯田每亩由原用工二十至三十 Yan’an County Chengguan People’s Commune, in Yinjiagou Mountain Management District, combined with site rectification and mobilized the masses to make technical innovations and tool reforms, setting off the climax of the labor race of “learning, hitting, comparing and helping.” Commonly used in the plow loosening method and scraper, scraper and other advanced tools, the combination of the above methods and tools, to repair the level of terraces per mu by the original workers twenty to thirty