宁夏河套灌区节水目标与发展潜力

Water saving objective and development potential of Yellow River irrigated districts in Ningxia

河套灌区发展节水灌溉要因地制宜,总体目标的实现应该分阶段进行。用灰色理论进行河套灌区的水资源供需分析,预测2010年节水潜力为10.30亿m3,2020年为13.81亿m3。灌区节水潜力有:采取工程措施、调整作物种植结构、开采浅层地下水、改进地面灌溉方式、发展灌水技术、提高灌区节水灌溉管理水平等。

The overall idea of development of water-saving irrigation in YeLlow River irrigation area should be in conformity to local condition, and the realization of the overall objective should be implemented in stages. The supply and demand of water resources was analyzed using grey theory, and the potential water-saving capacity is 1.030 and 1.381 billion m3in 2010 and 2020 respectively. The potential for water-saving can be exploited rationaLly by the measures, such as engineering measure, adjustment of crop planting structure, exploitation of shallow groundwater, improvement of the surface irrigation manner, development of advanced irrigation technology and improvement of water-saving management in the irrigation area.