本文结合长沙坝-葫芦口梯级水库的情况,研究了以灌溉为主的两个具有多年调节性能的梯级水库的联合运行方式。文中提出了“二级凋节”运行的新概念,采用了临界枯水年组连续操作方式绘制水库多年调节调度图,用时历法进行了计算,并讨论了“二级调节”联合运行方式的优越性. In this paper, combined with Changsha Dam - Hulu Kou cascade reservoirs, the study of irrigation mainly two multi-year regulation of the cascade reservoir joint operation mode. A new concept of “second-order witnessing” operation was put forward in this paper. A multi-year adjusting schedule of the reservoir was set up by continuous operation of the critical dry years, and the calculation was made by the calendar method. The superiority of the “second adjusting” combined operation mode was discussed Sex.