Mimicked in-situ stabilization of metals in a cropped soil : Bioavailability and chemical form of zinc
Mimicked in-situ stabilization of metals in a cropped soil : Bioavailability and chemical form of zinc
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DOI：
10.1021/es960072j
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发表时间：
1996-10
影响因子：
11.4
通讯作者：
A. Chlopecka;D. Adriano
中科院分区：
文献类型：
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作者：
A. Chlopecka;D. Adriano
将农用石灰、天然沸石(斜发沸石)、羟基磷灰石和氧化铁的副产品(富铁，E.I.Du Pont de Nemour的商标名称)添加到人工污染的应用淤泥壤土中，以稳定和限制作物对锌的吸收。一项温室盆栽研究包括在土壤中分别添加0、150、300、600、1200和2400 mg/kg的烟尘(FD)。当添加FD的土壤的pH值低于6.0时，高达40%的总锌以可交换的形式存在，这被认为是植物最有效的形式。改良剂(石灰、沸石、磷灰石和富铁)降低了土壤各FD水平上可交换态锌的浓度，但降幅最大的是最低剂量。以玉米(Zea Mays)、大麦(Hordeum Vocgare)和萝卜(Raphanus Sativus)为试材，研究了锌对植株生长和吸收的影响。土壤中添加改良剂能促进玉米和大麦的生长发育，提高产量，但只有富铁土壤才能提高玉米和大麦的产量。
Agricultural lime, natural zeolite (clinoptilolite), hydroxyapatite, and an iron oxide waste byproduct (Fe-rich, a trademark name of E. I. du Pont de Nemours) were added to an artificially contaminated Appling silt loam soil to stabilize and limit the uptake of Zn by crops. A greenhouse pot study involved spiking the soil with flue dust (FD) at 0, 150, 300, 600, 1200, and 2400 mg of Zn kg-1. As much as 40% of the total Zn occurred in an exchangeable form, the form considered most bioavailable to plants, when the pH of the FD-spiked soil was below 6.0. The ameliorants (lime, zeolite, apatite, and Fe-rich) decreased the concentration of the exchangeable form of Zn at each level of FD in soil; however, the largest decrease occurred with the lowest dose. Maize (Zea mays), barley (Hordeum vulgare), and radish (Raphanus sativus) were grown to determine the effects of Zn on the plant growth and its uptake. The addition of ameliorants to soil enhanced the growth and yield of maize and barley, but only Fe-rich enh...