【摘要】 漓江上游面积２６８０ｋｍ２，枯水由基流及枯季降雨组成，具两谷一峰变化规律，低谷多出现于１２月及１月，枯水流量具周期变化规律，可用谱函数表示。枯季补水有３个目标，方法有生物措施和工程措施，工程措施补水量大、工期短、成本较低．并对补水极限进行了讨论，认为补足５０ｍ３／Ｓ即为极限．更多还原

【Abstract】 The upper reach area of Liriver is 2680 km2. Low water consists of baseflow and dry season rainfall with a variation regularity of two valleys and a peak. Low valley generally takes place in December and January. Low-water discharge possesses a periodic variation regularity and it is shown by spectrum function. Dry season make-up water is of diverse targets. There are two methods: the biological measure and the engineering measure. The latter displays a big make-up water flow, short time limit for engineering and low cost.This paper also discusses liciting make-up water.It is believed that maximum is filling 50 m3S-1.更多还原