我国内陆交通闭塞,长期以来严重阻碍着大西南的发展。发展交通,开辟对外通道,是开发大西南的战略措施和当务之急,这已经成为全国的共识。北疆铁路伸延到阿拉山口与苏联中亚铁路接轨和第二条欧亚大陆轿的形成,给大西南新的借鉴和启示:大西南也应该尽快打开自己的西部大门,开辟西部的对外通道,建 The blockage of China’s inland traffic has seriously hindered the development of the Greater Southwest. Developing transportation and opening up foreign channels is a strategic measure and a top priority for developing the great southwest. This has become the consensus of the whole country. The extension of the Northern Xinjiang Railway to the Alashankou and the Central Asia Soviet Union and the Central Asian Railway and the formation of the second Eurasian sedan gave a new reference and inspiration for the Southwest: the Southwest should also open its own door to the west as soon as possible to open up western foreign channels, build