期刊论文

中文

湖南农业科学

1006-060X

2011

03

52-56

10.3969/j.issn.1006-060X.2011.03.017

国家“十一五”科技支撑计划（2008BADA7B02）；

本校为第一机构

土壤中砷的植物有效性研究是开展污染诊断、评估环境健康风险及开展砷污染土壤修复的重要依据。土壤中砷的危害一方面与其在土壤中的含量、有效性和结合形态有关,另一方面与植物对砷的富集能力有关。土壤中砷对植物的有效性主要与有效态砷的含量相关,土壤有效态砷的数量是土壤中砷污染状况的真实反映;富集系数是植物中砷含量与土壤中砷含量的比值,它可大致反映植物在相同土壤砷浓度条件下对砷的吸收能力。高砷风险区宜选种对砷富集能力较差的作物品种。

The study on phyto-availability of arsenic in soil is a foundation for pollution diagnosis,risk assessment of environmental health and the remediation of arsenic-contaminated soil.The arsenic damage not only relates to the concentration,the availability and the combination forms of arsenic in soil,but also relate to the bioaccumulation ability of plant to arsenic.Arsenic phyto-availability mainly relates to available arsenic concentration in soil,and the available arsenic concentration in soil directly reflects arsenic contamination status of soil.The accumulation index is the ratio of arsenic...