Efficiency of Repeated Phytoextraction of Cadmium and Zinc from an Agricultural Soil Contaminated with Sewage Sludge
Efficiency of Repeated Phytoextraction of Cadmium and Zinc from an Agricultural Soil Contaminated with Sewage Sludge
复制标题
从受污泥污染的农业土壤中重复植物提取镉和锌的效率
DOI：
10.1080/15226514.2014.935286
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发表时间：
2015-01-01
影响因子：
3.7
通讯作者：
Christie, Peter
中科院分区：
文献类型：
--
作者：
Luo, Kai;Ma, Tingting;Christie, Peter
通过盆栽试验，研究了长期施用污泥对土壤镉、锌污染的影响。笋产量和土壤理化性质的变化显着增加修复作物的数量时，两种植物间作相比，未种植的对照土壤和两个单一的处理。土壤微生物指标如平均井色发育、土壤酶活性和土壤微生物数量的变化也受到修复植物生长的显著影响，尤其是与S. plumbizincicola和A. graveolens。较高的产量和量的镉采取表明，间作的超积累植物和蔬菜物种可能是适合同步农业生产和土壤修复，与更大的作物产量和更高的植物修复效率比单作条件下。
Long-term application of sewage sludge resulted in soil cadmium (Cd) and zinc (Zn) contamination in a pot experiment conducted to phytoextract Cd/Zn repeatedly using Sedum plumbizincicola and Apium graceolens in monoculture or intercropping mode eight times. Shoot yields and soil physicochemical properties changed markedly with increasing number of remediation crops when the two plant species were intercropped compared with the unplanted control soil and the two monoculture treatments. Changes in soil microbial indices such as average well colour development, soil enzyme activity and soil microbial counts were also significantly affected by the growth of the remediation plants, especially intercropping with S. plumbizincicola and A. graveolens. The higher yields and amounts of Cd taken up indicated that intercropping of the hyperaccumulator and the vegetable species may be suitable for simultaneous agricultural production and soil remediation, with larger crop yields and higher phytoremediation efficiencies than under monoculture conditions.