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打坝淤地是黄土丘陵沟壑区充分利用水土资源、变荒沟为良田的一项积极有效措施,也是建设稳产高产农田的重要途径之一.坝地水足土肥产量高,是干旱山区重要的基本农田,在农业生产中发挥了重大的作用.但部分坝地盐碱化严重,使利用率大大降低.据在陕北大面积调查,有常流水的沟道打坝淤地后,盐碱化面积占淤地面积的36%,高的达60%.榆林、延安两地区,每年因坝地盐碱少收粮食五千多万公斤.治理改良盐碱坝地是坝地利用中亟待解决的问题.为此,我们从1975年开始进行了盐碱化坝地治理的试验研究.
It is an active and effective measure to make full use of soil and water resources and change wasteland into fertile land in loess hilly and gully area as well as one of the important ways to build stable and high yield farmland. Basic farmland has played an important role in agricultural production, but serious salinization in some dams has greatly reduced the utilization rate.According to a large area survey in northern Shaanxi, The area of silt covers an area of 36%, a high of 60% .Yulin, Yan’an and two areas, each year due to the dam salina less than 50 million kilograms of food .To improve the salinization dam is the use of the dam in urgent need of solution Therefore, from 1975, we conducted a pilot study on the treatment of salinization dam.