1992年8月10日中国土壤学会第四届土壤地质研讨会在河北省保定市举行,并于20日在张家口结束。到会代表88人,会议共收到论文75篇,主要涉及土壤资源、土壤地质、地貌、粘土矿物、第四纪地质、新构造运动与土壤发育、地质、土壤与作物生长的关系、环境地质、成土环境与农业等。会议期间先后考察了太行山区的山地褐土、太行山冲积扇前缘洼地淀泊自然地理景观和沼泽土,五台山第四纪中、晚更新世“混杂堆积”与土壤,亚高山草甸土的 August 10, 1992 The Fourth Soil Geology Symposium of China Soil Society was held in Baoding, Hebei Province, and ended on the 20th in Zhangjiakou. There were 88 delegates to the conference, and 75 papers were received at the conference, which mainly covered the relationship between soil resources, soil geology, landforms, clay minerals, quaternary geology, neotectonics and soil development, geology, soil and crop growth, environmental geology , Soil environment and agriculture. During the meeting, the authors investigated successively the natural cinnamon soil of mountainous cinnamon in the Taihang Mountains and the frontal depressions in the alluvial fan of the Taihang Mountains and the swamp soil. In the middle and late Pleistocene, the mixed deposition of the Quaternary Period of the Wutai Mountain and the soil, subalpine meadow soil