一、前言关于黄土的性质,在过去很少有系统的试验研究,尤其对于影响黄性质各因素系统的分析,更为缺乏。解放前的南京水利实验处曾对西北一些地区的黄土作了些试验,并出有专刊报告其试验成果,但其内容主要供了些资料,未加系分析,找出各性质间相互关系。为了适应国家建设需要,同时由于本人及所属全体工作同志, I. INTRODUCTION There has scarcely been systematic studies on the nature of loess in the past, especially the analysis of the systems that influence the various factors of yellowness. Before the liberation of the Nanjing Water Conservancy Laboratory had some loess in some areas of the North made some experiments, and a special report on its experimental results, but its content mainly for some information, without additional analysis to identify the interrelationships between the various properties. In order to meet the needs of national construction, at the same time, as a whole,