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对湖北省咸宁地区不同农业利用下，第四纪沉积物母质发育的１５个棕红壤土样，进行了小麦生长盆栽试验；离心法提取土壤溶液，并分别和连续用０．０２ｍｏｌ／ＬＣａＣｌ２，１ｍｏｌ／ＬＫＣｌ，ｐＨ４．８ＮＨ４Ａｃ和０．５ｍｏｌ／ＬＣｕＣｌ２溶液提取土壤铝。测定了小麦的生长参数、土壤溶液和几种提取液中的总铝量和快反应铝含量。结果表明，①Ａｌ３＋是土壤溶液中对小麦最具毒害的铝离子形态；②０．０２ｍｏｌ／ＬｃａＣｌ２和１ｍｏｌ／ＬＫＣｌ提取出的铝是对小麦产生毒害的主要活性铝；③１ｍｏｌ／ＬＫＣｌ提取的总铝量和快反应铝量能很好地反映土壤中毒性铝离子的含量；④１ｍｏｌ／ＬＫＣｌ连续提取的吸附态铝数量也在一定程度上决定着土壤铝对小麦的毒害作用；⑤ｐＨ４．８ＮＨ４Ａｃ，０．５ｍｏｌ／ＬＣｕＣｌ２等连续提取的铝主要是聚合态铝，对小麦生长没有直接的危害，但其数量大，且易转化，其作为潜在铝库的作用不容忽视。
Fifteen red-brown soil samples were developed under different agricultural use in the Xianning region of Hubei Province and developed from the parent material of Quaternary sediments. The soil was extracted by centrifugation. The soil samples were extracted with 0.02 mol / L NaCl, /LKCl, pH4.8NH4Ac and 0.5mol / LCuCl2 solution to extract soil aluminum. The growth parameters of wheat, total aluminum in soil solution and several extracts, and aluminum content in fast reaction were measured. The results showed that: (1) Al3 + was the most toxic form of Al ions to wheat in soil solution; (2) Al2 +0.02 mol / L CaCl2 and1mol / L KCl extracted aluminum was the main active aluminum poisoning to wheat; ③1mol / LKCl extracted Al and The amount of aluminum rapidly reacts can reflect the contents of toxic aluminum ions in soil. ④ The amount of adsorbed aluminum continuously extracted by 1 mol / L KCl also determines the toxic effect of soil aluminum on wheat to a certain extent. ⑤pH4.8NH4Ac, 0.5mol / The continuous extraction of aluminum, such as LCuCl2, is mainly polymerized aluminum, which has no direct harm to the growth of wheat, but its quantity is large and easy to be transformed. Its role as a potential aluminum reservoir can not be ignored.