一、问题的提出土壤资源图的编制是以土壤图为基础着手进行的。编图前,首先要拟定出土壤资源的评价原则和选定评价项目。应当把土壤图上每块图斑所包含的土壤类型的质量好坏,看作是若干个用评价项目来表示的因子对它综合影响的结果。评价项目及其所含的具体内容是进 First, the issue of the proposed soil resource map is based on the soil map to proceed. Before compilation, we must first draw up the evaluation principle of soil resources and selected evaluation items. The quality of the soil types contained in each patch on the soil map should be considered as the result of several factors that are collectively represented by the evaluation items. The evaluation project and its specific content is into