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培修软埝地埂和—次修平梯田的方法,是天水地区惯用的两种方法。现就我们的体会和以往的科学实验及调查资料予以分析比较。不妥之处,请批评指正。第一,从投工来:南家湾生产队去冬今春修的12.5亩水平梯田,原坡面为13～17度,修成后田面宽为10～15米,平均坎高2.5米,共计土方4,700余立方米,用工1,500多个,平均工效为3.16立方米,每亩用工120多个(土冻),每亩平均土方378立方米;
To cultivate the soft ground and the method of repairing the terraced fields are two common methods used in the Tianshui area. Now on our experience and previous scientific experiments and survey data to be analyzed and compared. Improper, please criticize correction. First, from the project to work: Nanjiawan production team to repair the winter and spring of 12.5 acres of terraced fields, the original slope of 13 to 17 degrees, after the completion of a wide field of 10 to 15 meters, an average of 2.5 meters high ridge, a total of earth 4,700 cubic meters and more than 1,500 workers, with an average efficiency of 3.16 cubic meters and more than 120 workers per mu (soil frozen), with an average earth volume of 378 cubic meters per mu;