本文应用HF—HNO_3—HCIO_4消煮土壤;用ICP—AES法测定各元素.提出某些土类如灰化红黄壤和热带亚热带砖红壤,它们主要的粘土矿物为高岭土—所有矿物中最稳定的矿物,故在消化时必须增加HF的用量及消化次数,方可完全.同时,在测定各元素时,应用基体匹配与光谱干扰校正系数相结合的方法,消除元素间的千扩,可同时测定27种元素的含量.本法准确度和精密度均达到令人满意的结果. In this paper, the soil was digested with HF-HNO_3-HCIO_4, and the elements were determined by ICP-AES. Some of the soils, such as ashed red and yellow soils, and the tropical subtropical brick red earth were proposed. Their main clay minerals were kaolin - the most stable of all minerals Minerals, so the digestion must increase the amount of HF and the number of digestion before completely.At the same time, the determination of each element, the use of matrix matching and spectral interference correction coefficient combination of methods to eliminate elemental expansion, can be simultaneously measured 27 elements of content.The accuracy and precision of this method have reached satisfactory results.