海南岛位于我国南疆,孤悬海外,因古代交通不便阻滞与大陆的交往,秦汉以来一直被视为瘴乡蛮地、炎天瘴海之所。但在宋元时期,随着中央政府对海南开发的重视,海南岛的水利建设不论工程或技术都有较大发展,有力地促进了当地耕作条件和技术的改进,加快了农业开发,提高了粮食产量。宋元时期的水利建设对当地农业开发和生态环境保护有着重要意义。 Hainan Island, located in southern China, is lonely and detached overseas. As a result of the ancient traffic inconvenience, it has blocked the contacts with the mainland. Since the Qin and Han dynasties, it has been regarded as the land of Manchu and Yantian. However, in the Song and Yuan dynasties, with the central government’s emphasis on Hainan’s development, the water conservancy construction in Hainan Island had a great development both in engineering and technology, which effectively promoted the improvement of local farming conditions and technologies, accelerated agricultural development and improved Food production. The construction of water conservancy in Song and Yuan dynasties is of great significance to local agricultural development and ecological environment protection.