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在陕北黄土丘陵沟壑区,要满足农业发展纲要“四、五、八”粮食生产指标的需要,将现有单位亩产翻上几翻,不解决山地灌水问题,是有困难的。但怎样来解决这个问题呢?引水上山当然是一种办法,而这需要具备引水上山的地形、水源条件,一般是工程量大,用费多,实施的范围就不会广。修梯田能起拦蓄径流保水保土的作用,但陕北坡面适宜于修梯田的也只占总土地面积1/3～1/4,同时修梯田只能保水保
In the loess hilly and gully regions of northern Shaanxi, it is difficult to meet the needs of the “four, five and eight” grain production targets of the agricultural development program and to turn the existing units of mu production over several turns without solving the problem of mountainous irrigation. However, how to solve this problem? Diversion of water is certainly a way up the mountain, and this requires diversion to the topography of the terrain. The conditions of water sources are generally large in terms of engineering costs and more, the scope of implementation will not be wide. Terraced fields can play the role of retaining runoff and conserving soil and water, but it is only suitable for terraced fields in northern Shaanxi to occupy only 1/3 ~ 1/4 of the total land area. At the same time,