黄土区露天矿排土场水分调控技术研究

河套灌区是中国乃至亚洲最大的一首制自流灌区。目前河套灌区农田灌溉中存在的主要问题是灌溉水源不足,水利工程老化,田间工程标准低,节水灌溉推广缓慢,灌溉水浪费严重等。为了解决这些问题,河套灌区应从工程节水、农业节水、化学节水、管理节水等综合技术方面考虑。工程节水主要从渠道衬砌、激光平地、小畦灌溉等方面着手,同时积极开展节水灌溉,合理利用地下水。农业节水主要是做好种植区划,加强农艺节水,深耕蓄墒与秸秆还田,减少地面蒸发。化学节水是积极推广应用抗旱剂、保水剂和其它化学调控试剂。管理节水主要是加强用水管理,完善管理制度,建立"农民用水者协会"。

Water Regulating Technologies for Dump Sites of Opencast Mine in Loess Area

Hetao irrigation district is the largest single gravity irrigation district in China and even Asia.At present,the main problems of field irrigation in Hetao irrigation district are lack of water source,irrigation structure aging,low engineering standards,slow promotion of water-saving irrigation techniques,serious waste of irrigation water and others.To solve these problems,Hetao irrigation district should take account of some integrated technologies,such as engineering,agricultural,chemical,and management ...