Effect of heavy metals in sludge on agricultural crops

被引:0
|
作者
Hyde, H.C. [1 ]
Page, A.L. [1 ]
Bingham, F.T. [1 ]
Mahler, R.J. [1 ]
机构
[1] Waste and Water Internat., San Francisco, Calif., United States
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Agricultural engineering - Heavy metals - Wastewater;
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摘要
Four years of field tests and a one-year greenhouse test were conducted to determine the effect of heavy metals in wastewater sludge on agricultural crops in the San Francisco Bay region. In the field tests, marginal soil was used with field corn as the test crop. The total plant content of heavy metals increased but the corn grain was not affected. The data suggest that the amount ot plant-available forms of metals may reach a ″steady-state″ condition or revert to less available forms after initial sludge applications.
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页码:2475 / 2486
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