红壤利用方式对铝形态和毒性的影响  

Influence of Different Uses of Land on Forms and Toxicity of Aluminum in Red Soils

作　　者：谢正苗[1] 叶兰军[1] 黄昌勇[1] 

机构地区：[1]浙江农业大学环资学院

出　　处：《广东微量元素科学》1996年第12期59-63,共5页Trace Elements Science

摘　　要：研究了红壤不同利用方式对铝的活性和形态的影响。结果表明：四种活性铝的提取剂对土壤中铝的提取力顺序一般为０．５ｍｏｌ／ＬＮａＯＨ＞１ｍｏｌ／ＬＨＣｌ＞１ｍｏｌ／ＬＮＨ４Ａｃ＞１ｍｏｌ／ＬＫＣｌ。发育于第四纪红色粘土、采自同一地点、水文环境相似的黄筋泥的利用方式不同，活性铝含量相差极大，特别是交换性Ａｌ３＋的大小顺序（×１０－６）是：荒地（７４０）＞茶园（６６３）＞桃园（４３２）＞桔园（２３４）＞水稻田（１２７）。土壤中水溶性铝含量对土壤酸度十分敏感。Effect of land use of red soils (ultisol) on forms and toxicity of aluminum was studied. Generally,extractive capacity for soil active aluminum by four extractants was on following order: 0. 5 mol/L NaOH>1 mol/L HCl>1 mol/L NH4AcM mol/L KCl. The different use of the red soils developed from the Quarternary Period red clay and collected at the same place with similar hydrogeoenvironment greatly affected the amount of active aluminum,esp.the exchangeable Al3+. The order of amount of exchangeable Al3+ (×10-6) in the red soils for different use of land was: Barren land (740) >tea garden (663) >peach garden (432) >citrus garden (234) >paddy soil (127). The contents of soluble aluminum in tile soils were highly sensitive to soil acidity.

关 键 词：红壤 利用方式 活性铝 铝形态 铝毒性 

分 类 号：S155.25[农业科学—土壤学] S153.61[农业科学—农业基础科学]