强酸性土壤大田条件下油菜镉吸收累积特性初探

Preliminary Analysis on the Characteristics of Absorption and Accumulation of Cadmium in Rape in Strong Acid Soil

在强酸性土壤大田条件下,研究了油菜植株对镉的吸收累积特性。结果表明:油菜苗期不同器官对Cd的吸收规律为叶>根,盛花期呈分化趋势,成熟期为根>茎>荚果壳>籽粒;成熟期油菜单季净化率为0.231%～0.455%,平均为0.360%,其净化率有待提高。

A feld experiment was conducted to study the characteristics of absorption and accumulation of cadmium in difference of 20 kinds of oilseed rapes in strong acid soil. The results showed that： The Cd absorption rules in different rape organs showed leaf 〉 root at early fowering stage, a trend of differentiation at blooming stage and root 〉 stem 〉 shell 〉 seed at mature stage. The Cd purifying rate per season was 0.231%～0.455%, 0.360% for average at mature stage, which should be improved in the future.