field trials were conducted using the regression design of quadric orthogonal rotation inthe rainfed land of northern qianxian county on the loess tableland for three years.
研究采用二次正交旋转回归设计,在黄土台原阶地区的乾县北原旱地进行了三年的田间试验。
after the project complete part of hillside irrigative area can create landsides, the loess tableland can appear collapsible loess widely.
工程建成后,部分山坡地灌区会产生滑坡,黄土塬地在灌溉初期可能出现普遍的地面湿陷;
the results show that: the order of factors of groundwater level in the loess tableland area was: evaporation, precipitation, surface water irrigation, groundwater exploitation;
研究结果表明:黄土台塬区地下水动态的影响因素由大到小排序为:蒸发、降水、地表水灌溉、地下水开采;