缩小地区经济发展差距，实现全国区域经济协调发展，是一项重要任务。四川要通过东西部合作，促进自身发展，必须认清并充分发挥自己的优势，按经济规律办事，实现优势互补，共同发展。加强东西部合作是东部与四川经济发展的共同需要６０年代，国家搞“三线”建设，在中西部建 It is an important task to narrow the disparity in regional economic development and realize the coordinated development of the national economy. In order to promote its own development through cooperation between the eastern and western regions, Sichuan must recognize and give full play to its own advantages and act according to economic laws so as to achieve complementarity and seek common development. Strengthening the cooperation between eastern and western regions is the common need of economic development between eastern and Sichuan In the 1960s, the state engaged in the construction of the “third-tier”