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当前,我国玉米收获使用的多行玉米收获机,不论是对行多行还是全幅多行,割幅均在50cm以上。而我国华北北部和东北西南部的高寒冷凉地区,玉米种植却普遍采用行距39～49cm的窄行距种植,使得现阶段国内外生产的多行玉米收获机无法在该地区普遍推广使用。当地近两年来普遍出现了农户大量需用机械收获玉米却无处购买需用机器的窘状。这种玉米种植行距农艺与农机严重不相适应的客观实际已成为制
At present, the multi-line corn harvester used for harvesting maize in our country, whether it is multi-line or full-line multi-line, cutting width is more than 50cm. In northern China and northeastern Northwest China, in cold and cold areas, planting of corn with narrow row spacing of 39 ~ 49cm is widely used. Therefore, the multi-row corn harvesters produced at home and abroad can not be widely used in this area at present. In the past two years, there has been a widespread problem that farmers need machinery to harvest corn but have no place to buy machines. The actual practice of agronomy and agro-farming of such corn planting has become an objective reality