茶叶科学2001，Vol.21Issue(1)：48-52,5.
低分子有机酸对茶园土壤中Al、F、P、Cu、Zn、Fe、Mn的活化效应
Activation Effects of Low-molecular-weight Organic Acids on Al，F，P，Cu，Zn，Fe and Mn in Soils of Tea Garden
摘要
Abstract
The batch and extraction experiments were carried out toinvestigate the activation effects of different organic acids (citric acid，oxalic acid，tartaric acid，malic acid，succinic aid) and amino acids (glutamatic acid，asparagic acid) with different concentrations (0 mmol/l，0.5 mmol/l，1 mmol/l，2 mmol/l，5 mmol/l，10 mmol/l) on Al，F and the nutrient elements (P，Cu，Zn，Fe，Mn) in soils. The results showed that the organic acids and the amino acids have activative effects on Al，F，P，Cu，Zn and Mn in soils，and the degree of activation differs with the varieties and concentrations of the low-molecular-weight organic acids and the physical and chemical characters of soils. In general，citric，tartar and oxalate acids showed greater activative effects; With the increase of the concentration of citric，tartar，and succinic acids，the activative effects on Al，F and the nutrient elements in soils increase gradually; The organic acids have greater activative effects on the soil in old tea garden than those in young tea garden. It is regarded that，under the stress of nutrient elements，the tea root exudation of the organic acids (amino acids) is the main cause of acidification of tea plantation soils.关键词
有机酸/茶园土壤/元素/活化作用分类
农业科技引用本文复制引用
曾清如,周细红,廖柏寒,杨仁斌,铁柏青..低分子有机酸对茶园土壤中Al、F、P、Cu、Zn、Fe、Mn的活化效应[J].茶叶科学,2001,21(1):48-52,5.基金项目
教育部科学技术研究重点项目(教技司[2000]156-00209) （教技司[2000]156-00209）
