Phytotoxicity and Uptake of Metals Added to Soils as Inorganic Salts or in Sewage Sludge
Phytotoxicity and Uptake of Metals Added to Soils as Inorganic Salts or in Sewage Sludge
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以无机盐或污泥形式添加到土壤中的金属的植物毒性和吸收
DOI：
10.2134/jeq1975.00472425000400040007x
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发表时间：
1975
影响因子：
2.4
通讯作者：
J. A. Ryan
中科院分区：
文献类型：
--
作者：
J. Cunningham;D. Keeney;J. A. Ryan
将用 Cr、Cu、Zn 和 Ni 无机盐处理的土壤上的作物生长和金属吸收与在添加到土壤之前用这些金属改良污水污泥时获得的结果进行比较。然后将该混合物研磨并以 63 公吨/公顷（2.8%）固体的比例添加到土壤中。与同等污泥处理相比，涉及无机盐的处理导致产量较低，而且金属浓度通常较高。通常观察到高锌处理的产量最低。这些发现表明，在尝试使用无机盐处理的结果来评估污水污泥改良土壤的植物毒性和有毒金属吸收时必须谨慎。
Crop growth and metal uptake on soil treated with inorganic salts of Cr, Cu, Zn, and Ni were compared with the results obtained when a sewage sludge was amended with these metals before addition to the soil. This mixture was then ground and added to the soil at the rate of 63 metric tons/ha (2.8%) solids. The treatments involving inorganic salts resulted in lower yields and, in general, higher metal concentrations than the equivalent sludge treatments. Lowest yields were generally observed for the high Zn treatment. These findings indicate that caution must be used when attempting to use results of inorganic salt treatments to evaluate phytotoxity and toxic metal uptake from sewage sludge amended soils.