Sifting,Combination and Collection of the Technology of Water Saving Irrigation in Canal Irrigation Region

The canal irrigation region is the main component part of irrigation region in our country,and the surface irrigation is the main way of irrigation in canal irrigation region.It is important to develop the surface irrigation of water saving in canal irrigation region. Take the Baojixia irrigation region in the west of Shaanxi Guanzhong for an example,the technology of water saving surface irrigation in current is analyzed and sifted. Combined with the present situation and characteristic,the authors raise the technology of surface irrigation which is suitable for application and popularization in this irrigation region is three changes of furrow irrigation. By combining and collecting the technology of water saving surface irrigation with increasing the flow of unit width to rise the efficiency, even degree of irrigation, reduce the amount of water use of irrigation, and realize the aim of saving water.