七十年代以来,九三农场管理局陆续引进大量的自走式联合收割机,这对适应粮豆产量逐年增长及缩短收获期起到了保证作用。但这些自走式联合收割机未配大豆割台或大豆低割装置,致使在1978年前,没有能在豆收中发挥作用。未经改装的自走式联合收割机收获大豆时, Since the 1970s, the Jiu San Farm Administration introduced a large number of self-propelled combine harvesters, which has played a role in guaranteeing the year-on-year growth of grain output and shortening the harvest period. However, these self-propelled combine harvesters were not equipped with soybeans or low-cut soybeans, resulting in no effect until the year 1978. When the unmodified self-propelled combine harvest soybeans,