自1986年国家批准铁路实行投入产出、以路建路的经济承包（简称大包干）以来，在铁道部的统一部署下，我局经过两年“微调”，今年开始大包三年。这一新的经营管理制度，给我局各级、各类企业增添了活力，推动运输生产建设与经营管理进入到一个新的发展阶段。 Since 1986, the state approved the implementation of railway inputs and outputs and built the economic contract of Lujian Road (hereinafter referred to as the “big package dry”), under the unified arrangement of the Ministry of Railways, our bureau has been “fine-tuning” for two years and has started to pack three years this year. This new system of management and administration has added vitality to all levels and enterprises of the Bureau and promoted the construction, operation, and management of transportation to a new stage of development.