西部旱农区水资源与调控途径

Water Resource and Regulating Avenues in Drought Agriculture Area of Western China

实行西部经济大开发 ,水资源是制约的首要因素。要改善西部农业生产条件 ,加快生态环境建设 ,促进国民经济的发展 ,就必须在分析水资源利用现状的基础上 ,研究提出西部旱作农业抗旱节水的调控技术与途径 :加强水资源管理 ,建设节水型农业 ,从水资源时空调节角度出发 ,通过工程调水实现区域调节 ,建设库窑实行年季调节 ,拦蓄径流集雨补灌 ,充分利用自然降水 ,防止水土流失 ,增加覆盖防止蒸发 ,合理耕作促进根系深扎 ,最大限度地提高旱农区的水分利用率和利用效率 ,是西部旱作农业的根本出路。

Water resource is a major limited factor for western development of China. To improve agricultural condition, speed up ecological environment construction,and promote national economy,it is proposed regulating techniques and avenues to drought resistant and water saving according to present situation:strengthening administration of water resource;building up water saving agriculture;regulating water in regions with projects and in years with reservoirs;retaining runoff and precipitation for irrigation;planting vegetation to reduce evaporation;raising water utilization efficiency into full play is a cardinal way to drought agriculture in western China.