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渭北塬区系指陕西黄土高原南部高原区和部分台原区,历来实行旱作农业。七十年代以来,发展了深机井灌溉,灌溉面积达百万亩以上。黄土塬区地下水的赋存特点是埋藏深,储量少。由此产生两个弱点,即单井流量小和提水费用高。因此,确定省水、增产、增收适合本区的灌溉制度和方式,就成为急需研究的新问题。
The Weibei area refers to the plateau area in the southern part of the Loess Plateau and part of the Taiyuan area in Shaanxi Province, and has always implemented dry farming. Since the 1970s, deep well irrigation has been developed with irrigated area of more than 1 million mu. The occurrence characteristics of groundwater in the loess plateau area are deep burial and less reserves. As a result, two weaknesses arise: small single well flow rates and high pumping costs. Therefore, to determine the water saving, increase production and increase the irrigation system suitable for the region and the way it becomes an urgent need to study new issues.