[目的]研究宁夏灵武水田和旱田浅层地下水的水位及氮磷的变化特征.[方法]于2009～2010年对灵武示范区地下水水位、总氮、总磷等指标进行连续2年监测.[结果]监测结果表明,监测区的旱田和水田的地下水位走势是一致的,地下水位的最高值为每年的6、7月份,为30 cm左右,水位最低在每年的2、3月份,为180 cm左右；灌溉季节,水田地下水总氮含量高于旱田,非灌溉季节,水田地下水总氮含量低于旱田；水田和旱田地下水总磷含量年变化趋势是相同的,灌溉期间总磷含量相对较低,非灌溉期间相对较高.[结论]该研究可为进一步探究灌溉与氮磷水平之间的关系提供依据.%[ Objective ] The research aimed to study the changes of nitrogen as well as phosphorous, and water level of superficial ground water on paddy and dry land in Lingwu, Ningxia. [ Method ] The total nitrogen and phosphorous contents and ground water level of lingwu demonstration area was surveyed from 2009 to 2010. [ Result]The results indicated that the trend of water level on paddy and dry land was similar. The deepest of ground water was about 180 cm in February and March while the shallowest was about 30 cm in June and July. The total nitrogen of ground water on paddy was more than on dry land in irrigation seasons while less than in no-irrigation seasons. The trend of total phosphorous of ground water on paddy and dry land was similar. The total phosphorous of ground water was more in irrigation seasons than no-irrigation seasons. [ Conclusion ] This research could provide scientific basis for the illustration of relationship between irrigation and nitrogen and phosphorous contents.
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