Yinchuan city's groundwater resources are abundant,but water pollution is serious,not only exacerbated the crisis of water resources and the contradiction between supply and demand.At the same time,directly influenced the industrial and agricultural production,destruction of the ecological environment,and further a threat to human health.Based on the analysis of groundwater pollution investigation and sampling in Yinchuan City,using DRASTIC model,the analysis and research on the groundwater vulnerability in Yinchuan City,and antifouling performance assessment and zoning of groundwater,can help decision makers and managers for groundwater management strategy and policy,the limited funds and manpower directly into the vulnerable pollution in the area,to maximize the protection of groundwater resources.

Diversion canal seepage is one of problems that solve urgently of development and utilization of water resources in Yinchuan plain.Lining rate is low of different diversion channel,it is the main reason causing of serious leakage and seepage control performance is poor.So the improvement of the diversion channel anti-seepage performance is the key to solve the seepage problem.However,the canal seepage volume accounted for almost 60% of Yinchuan plain groundwater recharge.Channel seepage prevention performance lead to its recharge underground water reduction,and leads to have a significant impact on groundwater flow state of Yinchuan plain.In this paper,based on the comparative analysis of different seepage control scheme,research in diversion channel seepage of groundwater effect countermeasure in Yinchuan plain,improve water channel anti-seepage performance,improve irrigation water utilization rate,increase water supply capacity,and alleviate the contradiction that use water,lower the groundwater levels,mitigate and prevent soil salinization.

Soil salinization is the largest one of the major issues that affect the agricultural production of the Yinchuan Plain,has been restricting the Yinchuan Plain in social and economic development.This paper uses the canal irrigation and well irrigation combination irrigation way,through the comparison of various options,to prevent and improve the soil salinization.Final,determine a reasonable proportion of well irrigation,reasonably use part of diving,to change the current single quoted the Yellow River water for irrigation mode.This can prevent and improve the soil salinization,improve soil quality,and reduce the diving invalid evaporation,improve water use efficiency,reduce the burden of the plains drainage,ease the contradiction between supply and demand of the plain water resources.

重点介绍了1999年以后地震、电法、探地雷达发展的某些主要方面及发展趋势.

地面核磁共振技术是目前世界上仅有的可用于直接寻找地下水的技术.自从20世纪80年代俄罗斯开发成功该技术以来,资料采集、处理、解释技术在不断的发展.在综述这些新发展后,对该项技术在我国的应用进行了讨论.