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随着“两高一优”农作物面积的不断扩大,加之实行联产承包责任制后,地块分割变小,单个农户经营,造成播种期不同、化肥施用量不同,使作物成熟期也不同,不能进行大型机械化作业收割.我国主要稻麦
With the continuous expansion of the crop area of “two highs and one excellent” and the implementation of the system of contract responsibility for joint production, the division of plots becomes smaller and the operation of a single farmer results in different sowing dates and different application rates of chemical fertilizers, Can not carry out large-scale mechanized harvesting. China’s main rice and wheat