我国南方一些酸性土壤铝存在形态的初步研究

以连续提取法研究了我国南方主要酸性土壤铝的形态及其分布特点，探讨了不同铝形态之间的关系及其与母质、成土过程、环境条件的联系。还研究了土壤酸化对铝形态转化的影响．并以连续提取法提取的三种铝形态（交换性铝、活性羟基铝，有机络合态铝）来讨论现今常用的Ａｌ。（Ｔａｍｍ溶液提取）和Ａｌｄ（ＤＣＢ溶液提取）所可能包含的实际土壤铝形态，分析表明，Ａｌ０和Ａｌｄ无明确的形态意义，只是上种由操作定义的多形态组成的混合物。

Study on Aluminum Forms in Some Acid Soils in South China

This paper dealt mainly with aluminum forms and their distribution characteristics in major acid soils in South China using sequential extraction method,and also discussed the relationships between different Al forms and parent materials,properties of soil, or environmental factors. Meanwhile, effect of soil acidification on the transformation of Al forms was investigated. That commonly used Al. (extracted by Tamm's solution), or Ald(extracted by DCB solution) may consist of which Al forms in soil was discussed through comparisons of the three Al forms (exchangeable Al, moderately liable Al, and organic matter complexed Al) extracted by sequential extraction method. Results Suggested that Al0 or Ald is not a single and definite Al form based on the certain formation mechanisms, and is only a mixture consisted of several Al forms by operational definition.