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渭北系指关中渭河以北黄土台原和陕北高原南部残原区。海拔500～1200米,是著名旱原区,盛产小麦。多年来粮食单产徘徊在100—200斤,南部原区为200—300斤,产量低而不稳。不少人认为干旱是渭北提高作物产量的主要限制因素,改变低产局面主要是要把水利化做为农业投资的主要方向。但却忽略了渭北的降水资源,土壤水库的蓄调作用,通过恰当的旱农措施,可使产量成倍增长的可能性。
Weibei refers to the Guanzhong Weihe River Loess Plateau and the northern part of the Northern Shaanxi Plateau. 500 ~ 1200 meters above sea level, is a famous dryland, rich in wheat. Over the years, grain yields hovered around 100-200 jins and the southern prime area was 200-300 jins. The output was low and unstable. Many people think that drought is the main limiting factor for increasing crop yield in Weibei. To change the low-yielding situation is mainly to make water conservancy the main direction of agricultural investment. However, it ignored the precipitation resources in Weibei and the role of soil reservoirs in storage and storage. Through appropriate measures of dry farming, the possibility of doubling production could be ignored.