期刊论文

中文

湖南农业科学

1006-060X

2007

3

95-97

10.3969/j.issn.1006-060X.2007.03.036

本校为第一机构

通过在某雄黄矿区的野外调查，并结合实验室分析，证实蜈蚣草和五节芒不仅能很好地生长在较高浓度砷污染土壤上，而且还能大量地积累砷到其体内，表现出较强的富集能力，尤其是蜈蚣草。砷在蜈蚣草体内的分布表现为羽片〉茎秆；而砷在五节芒体内的分布表现为茎秆〉羽片。盆栽试验表明，两个品种的油菜（湘杂油1号和湘杂油15号）对砷也有一定的耐性和富集能力。当土壤砷含量小于108．59mg／kg时，油菜能正常生长，且生物量很大，而当土壤砷含量达到208．83mg／kg时，砷会对油菜产生毒害作用，其生长速度较慢，对砷的富集能力也减小。因此，在砷污染区可以利用蜈蚣草、五节芒和油菜等具有较高抗砷能...

In a survey of some mining region and the anlysis in the lab, conclusions were as followed ： （ 1 ） Pteris vittata Linn and Miscanthus floridulus Warb in soils contaminated arsenic could hyperaccumulated arsenic in body and absorbed strongly arsenic, especially Pteris vittata Linn; （2）the distribution of arsenic in the plant was leaf〉 stem for Pteris vittata Linn ;but that was stem 〉 leaf for Miscanthus floridulus Warb. Effects of arsenic on rape growth were studied through pot experiments, and the results showed that rape couM grow in th...