杂交苏丹草(Sorghum bicolor×S.sudanense)修复DDT污染土壤效果研究
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安徽省教育厅自然科学基金项目(2004KJ087)和安徽科技学院自然基金项目(2003YZ06)资助。


Effects of Hybrid Sudan Grass (Sorghum Bicolor×S. Sudanense) in Remediating DDT-Contaminated Soil
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    摘要:

    采用盆栽试验,研究了杂交苏丹草吸收和富集DDT的规律及其对DDT污染土壤的修复效果。结果表明:①土壤中添加高浓度的DDT,对杂交苏丹草的生物量没有显著影响,说明杂交苏丹草对DDT有耐受能力;②杂交苏丹草对DDT及其主要降解产物都有吸收,在旺盛生长期,植株中DDT的累积速率也较快;③杂交苏丹草根系中DDT及其主要降解产物的浓度是茎叶中相应组分浓度的4.81~10.32倍,质量比在0.57~1.55倍之间;④杂交苏丹草从土壤中吸收DDT占添加量的11.3%,而在其生长期间,土壤中DDT消失量为56.0%。

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    Pot experiments were conducted to study laws of DDT absorption and accumulation by hybrid sudan grass and effects of the grass in remediating DDT-contaminated soils. Results showed that ①no significant impact of high DDT application rate was found on biomass of hybrid sudan grass, indicating tolerance of the grass to DDT; ②the grass absorbed both DDT and its main degradation products, especially during its vegetative growth stage; ③the concentrations of DDT and its main degradation products in roots were 4.81~10.32 times as much as in shoot, and the masses were 0.57~1.55 times as much; and ④the grass absorbed 11.3% of the amount of DDT added into the soil, and soil DDT was depleted by 56.0% during the entire growing period of the grass.

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邢素芝,汪建飞,段立珍,谭志静.杂交苏丹草(Sorghum bicolor×S. sudanense)修复DDT污染土壤效果研究[J].土壤,2007,39(4):577-581. XING Su-zhi, WANG Jian-fei, DUAN Li-zhen, TAN Zhi-jing. Effects of Hybrid Sudan Grass (Sorghum Bicolor×S. Sudanense) in Remediating DDT-Contaminated Soil[J]. Soils,2007,39(4):577-581

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  • 在线发布日期: 2017-05-19
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