由河北省农机化研究所研制的4YF－3、4Y－3型自走式玉米联合收获机近日在北京通过农业部组织的科研鉴定。这两种机型的作业流程的描穗、果穗输送、果穗集箱、秸秆粉碎直接还田，较好地解决了我国玉米、小麦两茬平作地区玉米收获时合水率较高的果穗收获和秸秆处理。其特点是不用 The 4YF-3,4Y-3 self-propelled corn combine harvester developed by Hebei Agricultural Mechanization Research Institute recently passed the scientific research appraisal organized by the Ministry of Agriculture in Beijing. The operation of the two types of spikes, ear delivery, ear set header, straw crushed directly back to the field, a better solution to China’s corn, wheat two cropping area of ​​corn harvest higher corn ear harvest and Straw treatment. Its characteristics are not