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甘肃省平凉地区是黄河中游水土流失重点地区之一,农田多为坡阱地,全区615.18万亩耕地中,有山塬地557.76万亩,占90％。严重的水土流失,导致了土地瘠薄、干旱缺水、产量低下、群众生活贫困。因此,兴修水平梯田,变“三跑田”为“三保田”,成为改变生产条件、抗御自然灾害、解决群众温饱问题的根本措施而被长期坚持下来,到1988年底止,全区已兴修梯条田338.18万亩,按农业人口计算,人均占有梯条田2.02亩。在农业发展中,梯条田已成为重要的农田工程措施。
Pingliang, Gansu Province, is one of the key areas for soil erosion in the middle reaches of the Yellow River. Most of the farmland is slope-trapped land. Among the 615.18 million mu of arable land in the region, 557.76 million mu of mountainous plateau accounts for 90%. Serious soil erosion has resulted in barren land, drought and water shortage, low output and poor people’s livelihood. Therefore, to build a horizontal terraced field and change “Three Kau fields” into “three inscribed fields” has become a fundamental measure to change production conditions, resist natural disasters and solve the problem of food and clothing for the masses and has been persevered for a long time. By the end of 1988, 338.18 acres of fields, according to the calculation of the agricultural population, the average occupancy of 2.02 acres of ladder field. In agricultural development, landings have become important farmland engineering measures.