CADMIUM BUFFERING CAPACITY AND ACCUMULATION IN SWISS CHARD IN SOME SLUDGE-AMENDED SOILS

被引：23

作者：

KUO, S

机构：

[1] Washington State Univ, Res & Extension Center, 7612 Pioneer Way East, Puyallup

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1990年 / 54卷 / 01期

关键词：

D O I：

10.2136/sssaj1990.03615995005400010013x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Cadmium sorption by soils could be an important factor regulating the plant availability of soil Cd. Five soils containing varying amounts of Cd resulting from previous sludge application were analyzed for residual Cd availability under field conditions using Swiss chard (Beta vulgaris L.) as an indicator plant. The Cd accumulation was not highly correlated with DTPA (diethylene-triamine-penta-acetic acid)-extractable Cd. This result may be explained by a dissimilar response to plant Cd and DTPA Cd to soil pH. However, DTPA extracted 50 to 75% of sorbed Cd, depending on soil type. -from Author

引用

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页码：86 / 91

页数：6

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