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;
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;
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.