本文着重讨论一米以下土壤深层储水对作物的供水效果。它关联到如何正确地判断作物生长的水分条件,以及合理轮作和灌水制度的制订等问题。同时对于估价旱作区水分资源的增产潜力也有意义。 一 武功头道塬土壤深层储水的基本特性 武功头道塬位于黄土高原南部边缘,土 This article focuses on the effect of water supply to crops under deep water storage below one meter. It is linked to the question of how to properly determine the conditions under which water is growing, and the formulation of a reasonable rotation and irrigation regime. At the same time, it is also significant to appraise the potentials of increase of water resources in dry land. A Kwu Tau Tau Channel Highland soil deep water basic characteristics Wugong Tau Road Plateau is located in the southern edge of the Loess Plateau, soil