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本文通过对现用履带拖拉机组与中型轮式拖拉机组的投资、作业适应性、年利用率及作业成本等的概算和经济性分析,提出后者比前者具有一次性投资少、作业范围广、机动性好、常年利用率高、经营效益好等优点。中型轮式拖拉机组一般经营7～8年可收回全部投资成本,而履带拖拉机组至少需16年甚至24年方能收回投资成本。因此,在当前乃至今后,以中型轮式拖拉机更新履带拖拉机是比较可取的机型之一。
Based on the estimates and economic analysis of the investment, operation adaptability, annual utilization rate and operating cost of the existing crawler tractor unit and medium wheeled tractor unit, this paper puts forward that the latter project has the advantages of less one-time investment, wide range of operation, Good mobility, high perennial utilization, good operating efficiency and so on. Medium-sized wheeled tractors generally operate seven to eight years to recover the full cost of investment, while the crawler tractor at least 16 years or even 24 years to recover the investment costs. Therefore, it is one of the more desirable models to retrofit crawler tractors with mid-sized wheeled tractors now and in the future.