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依据历史文献与考古资料，论述了秦汉时期郑国渠和白渠的历史地理情况；指出二渠并未同时共存和共同发挥过经济效益，六辅渠也并非郑国渠的支流，而是导引于清、冶二水的灌溉系统．
Based on the historical documents and archaeological data, the paper discusses the history and geography of Zhenggu and Drainage Canal during the Qin and Han dynasties. It points out that Drainage Canal does not coexist and exert economic benefits together. Liufu Canal is not a tributary of Zhengguo Canal, Smelting two irrigation systems.