目前世界上收获玉米籽粒基本上有两种方法:一种是摘穗或同时脱粒,茎杆留在田间而后采用专门的机械粉碎,抛撒在田间;另一种是同时完成摘穗(或脱粒),茎杆粉碎(做青贮或收集做干饲料)。前一种工艺在美国等西方国家广泛采用,后一种工艺在苏联及东欧一些国家广泛采用。由于采用不同的收获工艺而发展了不同型式的玉米收获机。 At present, there are basically two methods for harvesting corn seeds in the world: one is picking ears or simultaneously threshing, the stems remain in the field and then special mechanical crushing is carried out, and the seeds are thrown in the fields; the other is to complete the picking (or threshing) , Stem smash (do silage or collected as dry feed). The former process is widely used in the United States and other western countries. The latter process is widely used in some countries in the Soviet Union and Eastern Europe. Different types of corn harvesters have been developed due to the different harvesting processes.