我县现有手扶拖拉机554台、6572马力,占全县农用拖拉机总马力的37.2%。长期以来,大部分手扶拖拉机能进行旋耕、运输、脱粒、抽水等项作业,就是不能犁耕。通过调查、试验、分析,初步认为手扶拖拉机不能耕地(田)的原因:一是铧式犁入土角度小,入土性能差,耕深不能满足农艺要求; Our county has 554 walking tractors, 6572 horsepower, accounting for 37.2% of the total horsepower of farm tractors in the county. For a long time, most of the walking tractors can carry out rotary tillage, transportation, threshing, pumping and other operations, that is, they can not plow. Through investigation, experiment and analysis, the reasons why the tractor can not cultivate land (field) are preliminarily considered as the following: First, the plow has a small angle of entry into the soil and a poor soil-filling performance, and the farming depth can not meet the requirements of agronomy;