黑龙江省普阳农场近几年来茎秆还田面积逐年增加,到1991年已达到收获面积的82.9%。但茎秆还田机具多是本场制造的,由于未经过动平衡试验,存在切碎器转子运转不稳,且振动大,经常损坏联合收割机尾部和其它部件的问题。1991年我们从佳木斯联合收割机厂购进36台茎秆切碎器转子,利 In recent years, Puyang Farm in Heilongjiang Province has increased the area of ​​stalks returning to the fields, reaching 82.9% of the harvested area by 1991. However, most of the straw stalks are manufactured in this field. As a result of the unbalanced test, there is a problem that the chopper rotor is not stable and vibrates frequently, which often damages the tail and other components of the combine harvester. In 1991 we purchased 36 stalk chopper rotors from Jiamusi Combine Harvester Plant