1985年6月中旬至7月中旬赴湘西地区,对南山、雪峰山、八面山、张家界等四个土壤的垂直带中红壤与黄壤的分布规律进行了考察。红、黄壤的区分到目前为止,仍有很多的争议。我们根据室内的分析资料和野外的实践经验,提出了以氟化钾浸出的土壤溶液pH(KF) From mid-June 1985 to mid-July of 1985, we went to Xiangxi region to investigate the distribution of red and yellow soils in the vertical bands of four soils including Nanshan, Xuefeng Mountain, Bamianshan and Zhangjiajie. The distinction between red and yellow so far, there is still a lot of controversy. According to indoor analysis data and field practical experience, we propose a potassium fluoride leaching solution pH (KF)