我县科委和农机厂从一九七二年开始研制,于一九七七年一月鉴定定型为川丰5—3型梭式机耕船(图1)。在定型前,生产了一百八十多台,进行了十一万多亩的耕地试验。一机部机耕船联合设计组参加了对该机的牵引、适应、耐久等项性能测定。对该机测定后认为,设计合理,使用方便、可靠,耕作时间利用率高、质量较好,尤其适应田块小、泥脚底层深(40～60厘米)的水田,是一种具有独特风格的水田耕作机械。川丰5—3型机耕船,主要由175柴油机、变速 Our county science commission and farm machinery factory started to develop in 1972 and was identified as a Chuanfeng type 5-3 shuttle tractor (Figure 1) in January 1977. Before stereotypes, more than 180 units were produced and more than 110,000 mu of arable land were tested. A machine-mechanized farming joint design team participated in the traction of the aircraft, adaptation, durability and other items of performance measurement. The machine after the test that the design, easy to use, reliable, high utilization of tillage time, good quality, especially to adapt to small fields, mud bottom deep (40 ~ 60 cm) paddy field, is a unique style Paddy field farming machinery. Chuanfeng 5-3-type machine-driven farming, mainly by the 175 diesel engine, variable speed