一、引言 为了扩大耕地面积,增产更多的粮食,国家规定在第一个五年计划内,“应积极地进行荒地的调查和勘察,完成一亿亩荒地的勘察工作,完成四千万亩到五千万亩荒地开垦的规划设计工作,为第二个五年计划大规模开垦荒地做好准备。” 土壤调查是荒地勘测的主要工作之一,调查方法虽与我国过去一般的土壤调查方法出入不多,但要求 I. INTRODUCTION In order to expand the cultivated area and increase the output of more grain, the state stipulates that in the first five-year plan, “the investigation and investigation of wasteland should be actively carried out to complete the investigation of 100 million mu of wasteland and complete 40 million mu To 50 million mu of wasteland reclamation planning and design work for the second five-year plan for large-scale reclamation of wasteland. ”Soil survey is one of the major works of wasteland survey, survey methods and our past, the general soil survey methods Not much access, but requested