硼锑交互作用对水稻吸收积累锑和硼的影响  

Effect of Boron-antimony Interaction on the Uptake and Accumulation of Antimony and Boron by Rice Seedling

作　　者：向猛[1,2] 黄益宗[1] 蔡立群[2] 保琼莉[1] 黄永春[1] 王小玲[3] 乔敏[4] 胡莹[4] 金姝兰[5] 李季[4] 王斐[4] 

机构地区：[1]农业部环境保护科研监测所,天津300191 [2]甘肃农业大学资源与环境学院,兰州730070 [3]江西省科学院生物资源研究所,南昌330096 [4]中国科学院生态环境研究中心,北京100085 [5]上饶师范学院历史地理与旅游学院,上饶334000

出　　处：《环境科学》2015年第4期1474-1480,共7页Environmental Science

基　　金：江西省科学院省级重点实验室开放基金项目(2013-KLB-08;2012-KLB-1);国家自然科学基金项目(21377152);国家科技支撑计划项目(2015BAD05B02)

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 30μmol·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10μmol·L-1Sb(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10μmol·L-1Sb(Ⅴ)处理下,添加2.0 mg·L-1的B导致水稻根系Sb含量比0.5mg·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.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 p, mol·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^-1 B 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（Ⅱ ） 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^-1 B, 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.

关 键 词：硼 锑 水稻 交互作用 毒害 富集系数 

分 类 号：X171.5[环境科学与工程—环境科学]