目前,在国营农场和人民公社所使用的拾禾器,主要有两种型式,即刚性指转筒式和回转弹指式。这两种都是五十年代老产品,多年来没有多大改进。它们存在着拾禾效率低,弹指打击谷物掉粒严重(尤其在豆收中),以及弹指易变形和拾禾宽度较窄等问题。为了改变拾禾器的技术落后状况,1980年密山县东风农机厂承担了省机械局下达 At present, there are mainly two types of pick-and-sump used in state-owned farms and people’s communes, that is, rigid finger drums and revolvers. Both are old products from the 1950s and have not improved much over the years. They have the problems of low efficiency of picking up grains, serious grain falling off by finger-striking cereals (especially in the middle of beans), and the problems of deformable fingers and narrow width of pick-up. In order to change the technology of picking up the backwardness of the situation, in 1980 Mishan County, Dongfeng Agricultural Machinery Factory commitment Provincial Bureau of Machinery issued