摘要
[Objective] This study aimed to analyze the differences in absorption capacity of different flue-cured tobacco cultivars for chromium (Cr), arsenic (As), cadmium (Cd), lead (Pb), mercury (Hg) and copper (Cu). [Method] With 4 flue-cured tobacco cultivars as the experimental materials, their absorption capacity for 6 kinds of heavy metals was compared by pot experiment. [Result] There were great differences in absorption capacity of different flue-cured tobacco cultivars for the six kinds of heavy metals. According to the absorption capacity of different flue-cured tobacco cultivars for the heavy metals, the six heavy metals could be classified into three categories. The first category included only Cd with average enrichment coefficient of 8.564; the second category included Hg with average enrichment coefficient of 0.753; and the third category included Cr, As, Pb and Cu with average enrichment coefficients below or equivalent to 0.114. [Conclusion] The absorption capacity of different flue-cured tobacco cultivars for heavy metals was grasped by this study, thereby providing reference data for screening of high-yielding and high-quality flue-cured tobacco cultivars.
[目的]研究4个烤烟品种对铬(Cr)、砷(As)、镉(Cd)、铅(Pb)、汞(Hg)和铜(Cu)6种重金属的吸收能力差异性。[方法]以4个烤烟品种为对象,通过盆栽试验研究比较各烤烟品种对6种重金属的吸收能力差异。[结果]不同烤烟品种对6种重金属的吸收能力差异较大,根据烤烟品种吸收不同重金属的能力,可将重金属划为三类,第一种是镉,平均富集能力为8.564;第二类为汞,烤烟品种对汞的吸收能力属于中等,平均富集系数为0.753;第三类为铬、砷、铅和铜,平均富集系数都小于或等于0.114。[结论]通过该研究可掌握不同烤烟品种对重金属的吸收情况,为烤烟栽培品种选择生产优质烟叶提供数据参考。
基金
Supported by Tobacco Project of Changsha Branch of Hunan Tobacco Corporation(CYKJ2014-01)~~