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一、历史的回顾据统计:每公里新建铁路的造价,如果假定“一五”时期为100的话,“三五”为304,“四五”为247,“五五”为377,即“五五”比“一五”增长2.77倍。以1966年～1980年的15年同1953年～1967年的15年相比,国家对铁路的投资增加三倍多,可新建铁路铺轨里程仅增长7%。每公里铁路建设周期“一五”为12个月,“三五”为17个月,“四五”为21个月,“五五”为24个月,“五五”比“一五”铁路建设周期增长一倍。
I. Historical Review According to the statistics, if the cost of new railway per kilometer is assumed to be 100 in the first five-year period, 304 in the “Three-Five” period, 247 in the “April 5” period and 377 in the “May 5” Five “growth of 2.77 times than the” five-first ". Compared with 15 years from 1966 to 1980 and from 15 years from 1953 to 1967, the national investment in railways more than tripled, and the mileage for newly built railways only increased by 7%. The first five-year period for the construction of railways per kilometer is 12 months for the 35th Five-year Plan period, 17 months for the 35th Five-Year Plan period, 21 months for the 45th Five-Year Plan period, 24 months for the Fifth Five-Year Plan period, Railway construction cycle doubled.