| 硼锑交互作用对水稻吸收积累锑和硼的影响 |
| 摘要点击 2420 全文点击 1225 投稿时间：2014-09-18 修订日期：2014-11-13 |
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| 中文关键词 硼 锑 水稻 交互作用 毒害 富集系数 |
| 英文关键词 boron antimony rice interaction poison bio-accumulation factor |
| 作者 | 单位 | E-mail | | 向猛 | 农业部环境保护科研监测所, 天津 300191
甘肃农业大学资源与环境学院, 兰州 730070 | xmeng1028@foxmail.com | | 黄益宗 | 农业部环境保护科研监测所, 天津 300191 | hyz@rcees.ac.cn | | 蔡立群 | 甘肃农业大学资源与环境学院, 兰州 730070 | | | 保琼莉 | 农业部环境保护科研监测所, 天津 300191 | | | 黄永春 | 农业部环境保护科研监测所, 天津 300191 | | | 王小玲 | 江西省科学院生物资源研究所, 南昌 330096 | | | 乔敏 | 中国科学院生态环境研究中心, 北京 100085 | | | 胡莹 | 中国科学院生态环境研究中心, 北京 100085 | | | 金姝兰 | 上饶师范学院历史地理与旅游学院, 上饶 334000 | | | 李季 | 中国科学院生态环境研究中心, 北京 100085 | | | 王斐 | 中国科学院生态环境研究中心, 北京 100085 | |
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| 中文摘要 |
| 通过溶液培养实验,研究两种价态锑Sb(Ⅲ)和Sb(Ⅴ)与B交互作用对水稻吸收积累Sb和B的影响. 结果表明,这两种价态的Sb对水稻生长均有抑制作用,Sb(Ⅲ)比Sb(Ⅴ)对水稻毒害更明显,增加B用量可缓解Sb对水稻的毒害. Sb(Ⅲ)和Sb(Ⅴ)的添加可显著地影响水稻根系和茎叶对B的吸收积累. 当B的浓度为0.5 mg ·L-1时,添加三价Sb 30 μmol ·L-1可以显著地降低水稻茎叶和根系中的B含量57.6%和75.6% (与对照处理相比,P<0.05). 同样,增加B用量也影响水稻根系和茎叶对两个价态Sb的吸收积累. 在10 μmol ·L-1 Sb(Ⅲ)处理下,添加2.0 mg ·L-1的B可导致水稻根系和茎叶Sb含量分别比0.5 mg ·L-1B处理降低39.1%和9.2%; 在10 μmol ·L-1 Sb(Ⅴ)处理下,添加2.0 mg ·L-1的B导致水稻根系Sb含量比0.5 mg ·L-1B处理降低13.9%. B的应用对Sb在水稻根系和茎叶中的富集系数和分配比率也有显著影响. 研究结果表明,在Sb污染农田中可通过施用硼肥来提高植物的硼营养,降低植物对Sb的吸收积累,从而降低Sb对人体健康的危害. |
| 英文摘要 |
| Effect of interactions between boron (B) and antimony on the uptake and accumulation by rice (Oryza sativa L.) seedling was investigated in solution culture. The results showed that Sb(Ⅲ) and Sb(Ⅴ) could inhibit rice growth and Sb(Ⅲ) was more toxic than Sb(Ⅴ). Concentrations of B in rice roots and shoots were significantly affected by the addition of Sb(Ⅲ) and Sb(Ⅴ). The addition of 30 μmol ·L-1 Sb(Ⅲ) could significantly decrease B of rice shoots and roots by 57.6% and 75.6%, and 30 μmol ·L-1 Sb(Ⅴ) could decrease B of rice roots by 16.0%, compared with the control treatment, when the B concentration was 0.5 mg ·L-1. Equally, adding B also significantly affected the concentrations of Sb in rice roots and shoots. The addition of 2.0 mg ·L-1B could decrease the concentrations of Sb in rice roots and shoots by 39.1% and 9.2%, respectively, compared with 0.5 mg ·L-1 B, when the Sb(Ⅲ) concentration was 10 μmol ·L-1. Adding 2.0 mg ·L-1 B could decreasd Sb concentrations in rice roots by 13.9%, compared with 0.5 mg ·L-1B, when the Sb(Ⅴ) concentration was 10 μmol ·L-1. Furthermore, adding B had significant effect on bio-accumulation factor and distribution ratio of Sb in rice roots and shoots. The results of the study demonstrated that Sb pollution in farmland could be alleviated by adding B fertilizer, thus protecting human health from Sb pollution. |
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