| 田甜,陈炎辉,陈春乐,谢团辉,王果.不同籼稻品种对土壤汞富集的研究[J].农业环境科学学报,2015,34(5):824-830. |
| 不同籼稻品种对土壤汞富集的研究 |
| Accumulation of Soil Mercury by Different Indica Rice(Oryza sativa L.) Cultivars |
| 投稿时间：2014-12-25 |
| DOI：10.11654/jaes.2015.05.002 |
| 中文关键词: 糙米 富集 籼稻 汞 土壤 |
| 英文关键词: brown rice accumulation indica rice mercury soil |
| 基金项目:国家自然科学基金(u1305232) |
|
| 摘要点击次数: 3822 |
| 全文下载次数: 3141 |
| 中文摘要: |
| 在福建省9个地区采集19个籼稻(常规籼稻、二系杂交籼稻、三系杂交籼稻)品种的283个稻米和表层土壤样品,研究了汞在不同籼稻品种糙米中累积的差异性。结果显示:土壤样品总汞含量范围介于0.02～1.81 mg·kg-1,其中超过国家土壤二级标准的占37%;供试水稻糙米汞含量的范围为0.13～41.78 μg·kg-1,其中3.2%的水稻糙米超过了国家食品污染物限量标准(GB 2762-2012).大部分供试糙米汞含量与土壤总汞及有效汞含量之间没有显着相关。杂交籼稻与常规籼稻糙米汞含量之间没有显着差异(P>0.05),三系杂交籼稻糙米汞含量高于两系杂交籼稻,但也没有显着差异(P>0.05),两系杂交籼稻对土壤汞的富集能力均低于三系杂交籼稻。两系杂交籼稻是籼稻中对汞累积相对较低的品系。 |
| 英文摘要: |
| Different plants have showed various abilities to accumulate heavy metals from soils. In this study, 283 rice grain samples of 19 indica rice cultivars(including conventional, two-line hybrid and three-line hybrid indica rices) and 283 corresponding surface soils were collected from 9 districts of Fujian Province. Mercury(Hg) concentrations in both rice grains and soils were determined. Total soil Hg concentrations varied from 0.02 mg·kg-1 to 1.81 mg·kg-1, of which 37% samples contained Hg exceeding the secondary level limit of the National Soil Environmental Quality. The Hg concentrations in brown rice grains ranged from 0.13 μg·kg-1 to 41.78 μg·kg-1, of which only 3.2% samples contained Hg greater than the limit of the National Standards for Pollutants in Food(GB 2762-2012). There was no significant correlation between Hg concentrations in brown rice and total or available Hg in soil. No significant difference in Hg concentrations of brown rice between hybrid and conventional indica rice(P>0.05) was observed. Brown rice Hg content in three-line hybrid indica cultivars was higher than that in two-line hybrid indica cultivars, but the difference between them was not significant(i.e., P>0.05). Two-line hybrid indica rice cultivars showed lower Hg accumulating capability than three-line hybrid indica rice did. The present results indicate that two-line hybrid indica rice is the strain of low Hg accumulation. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
|
|
|
