目前,世界拖拉机保有量已达1400万台以上。制造农用拖拉机的主要国家是:美、英、法、苏、西德、日、意等国。 一、各国拖拉机的“三化”概况 在资本主义国家,全国拖拉机产品没有统一的型谱系列规划,但在公司或国际垄断集团 At present, the world’s tractor holdings have reached more than 14 million units. The main countries to make agricultural tractors are: the United States, Britain, France, the Soviet Union, West Germany, Japan, Italy and other countries. First, the tractors in various countries, “three of” profile In capitalist countries, the national tractor products, there is no uniform spectrum series planning, but the company or the international monopoly group