一、分类目的在系统整理总结群众土壤知识和经验基础上,阐明各种土壤间的相互关系,揭发和掌握耕地土壤在六种成土因素下,特别是人为因素影响下的质变过程,从而找出它的来龙去脉,亲缘关系、发展方向以及演变规律。并以人为方法加速前进和抑制其倒退的继续发展,以期 I. Purpose of the Taxonomy After systematically reviewing and summarizing the knowledge and experience of the masses of the masses, clarifying the interrelationships among the various soils, exposing and grasping the quality change process of the cultivated soils under the influence of the six soil-forming factors, especially the human factors, Its ins and outs, kinship, direction of development and evolution. And to accelerate the progress by man-made methods and inhibit the further development of its retrogression