柴达木盆地乌兰县节水灌溉试验研究

Study on Water Saving Irrigation Test in Wulan County of Qaidam Basin

以青海省乌兰县希里沟灌区"马铃薯种植灌溉"为例,通过对灌区种植结构的调整和发展高效节水灌溉喷灌技术的研究,得出现状年和规划年灌溉区用水量分别为3 499.70万和2 367.27万m^3,用水量减少1 132.43万m^3。在75%的保证率下,规划设计年都兰河来水量可满足项目区的灌溉需水要求,水资源供需达到平衡。与现状年相比,灌区灌溉水利用系数大幅度提高,节水效益明显。

Taking the “potato planting irrigation” in the Xiligou irrigation district of Wulan County,Qinghai Province as an example,through the adjustment of the planting structure in the irrigation area and the development of high-efficiency water-saving irrigation sprinkler irrigation technology,it was concluded that the current annual and planned annual irrigation area water consumption was 34 997 000 m^3 and 23 672 700 m^3,the water consumption decreased by 11.3243 million m^3.Under the 75% guarantee rate,the planning and design year of the Lanhe River could meet the irrigation water requirements of the project area,and the water supply and demand balance.Compared with the current year,the irrigation water utilization coefficient of the irrigation area had been greatly improved,and the water saving efficiency was obvious.