安徽省六安地区既有丘陵地带又有淮河平滩,适合小型机械耕作。全区拥有六安手扶拖拉机厂生产的长江-81型手扶拖拉机近10万台,承担着80%的耕作任务。该机具有质量小、油耗低、操作灵活以及价格便宜等优点,深得农民喜爱。但遗憾的是,由于操作人员不能正确地维护保养,致使70%以上的该型拖拉机带病作业,增加了作业成本。现将长 Lu’an area in Anhui Province both the hilly area and Huaihe Pingtan, suitable for small-scale mechanized farming. The region owns nearly 100,000 units of the Changjiang -81 Walking Tractor produced by the Lu’an Walking Tractor Factory, undertaking 80% of its farming tasks. The machine has the advantages of small quality, low fuel consumption, flexible operation and low prices, won the favorite farmers. Unfortunately, more than 70% of the tractors are sick and costly due to improper maintenance by operators. Now long