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前言我国古代引泾灌溉工程,始于秦而盛于唐。公元前246年秦始皇元年兴建的郑国渠,和公元前95年汉武帝太始二年修建的白公渠,按史料记载均为引洪灌溉,并留下了“田于何所,池阳谷口;郑国在前,白渠在后。举锸为云,决渠为雨;泾水一石,其泥数斗。且溉且粪,长我禾黍;衣食京师,亿万之口”的千古名谣。关于郑国、白公二渠,水利史志和考古学界已发表了不少的研究论述;作者也有幸参与过现场考察工作,并提出过一些见解。在已有著述中对某些问题的认识有所差别和争议,主要是历史文献记载的欠缺且说法相悖,
Preface China’s ancient introduction of Jing irrigation project, began in Qin and Sheng in the Tang. Zheng Guogu constructed in the first year of Qin Shihuang in 246 BC and Baigaku Drainage constructed in the early years of Emperor Wudi in 95 BC, all of them were irrigated by floods according to historical records and left "Tian Yu Ho, Chi Yang Gu Kou; Zheng In front of the country, the white channel is in the back, lifting the clouds as the cloud and the drains as the rain, the water of the Jing River and the mud of the bucket, . A great deal of research has been published on Zheng State, Bai Gong Er Canal, history of water conservancy and archeology. The author is also fortunate enough to participate in on-the-spot investigation and put forward some opinions. There are differences and controversies over the understanding of certain issues in the existing writings, which are mainly the lack of historical documents and the contradiction between the statements,