宁夏青铜峡灌区适宜节水阈值研究

Research on appropriate water saving threshhold in Qingtongxia irrigation district of Ningxia autonomous region

从宁夏青铜峡灌区生态地下水位分析入手,以灌区地下水数值模拟为工具,以生态地下水位为约束条件,对不同节水方案引起的地下水位变化进行对比分析,得出青铜峡灌区的适宜节水阈值,从而保证灌区农业生产安全和生态环境健康发展。

The ecological depth of groundwater in Qingtongxia Irrigation District was first studied,and then the changes of groundwater depth caused by different water saving schemes were analyzed under the ecological groundwater depth condition by means of groundwater numerical simulation model.Finaly the optimal scheme was selected and the corresponding appropriate water saving threshhold was concluded.Under the proper water saving threshhold,the agriculture security and the healthy development of the environment in Qingtongx Irrigation District will be insured.