农机区划中的分区一般是在确定了分区原则后,根据各地自然条件、生产特点、社会经济状况等采用所谓因素重叠原理由人们主观判断划分的。由于农业系统的复杂性,两个生产单元之间完全相似或者毫无共同之处的情况是不多的。多数情况是既有相似之处,又存在一定差异。不同的地区相似与差异的程度又各有区别。因此采用直观的分区方法往往不能准确 The division of agricultural machinery divisions is generally determined by subjective judgments based on the so-called principle of factor overlapping according to the natural conditions, production characteristics, socio-economic conditions in each area after the principle of zoning is determined. Due to the complexity of the agricultural system, there are few cases where two production units are completely similar or have no common ground. In most cases there are similarities and differences. There are differences between the similarities and differences in different regions. Therefore, the use of intuitive partitioning methods often can not be accurate