铁对小麦吸收不同形态镉的影响

采用营养液培养方法，研究了在供铁与铁与缺铁条件下小麦对不同镉化合物和镉污染土壤中镉的吸收和转移，同时不他陪伴阴离子对小麦吸收镉的影响。结果表明：缺铁培养小麦植株地上部及根中的含镉量均显著高于下沉供铁培养的小麦，小麦对小同化合物的吸收量不同，其吸收的多寡顺序依次为：Ｃｄ（ＮＯ３）２〉ＣｄＳＯ４〉ＣｄＯ。

EFFECT OF IRON UNTRITIONAL STATUS ON THE UPTAKE OF Cd FROM DIFFERENT COMPOUNDS BY WHEAT PLANTS

Solution culture experiments were conducted to study the effect of iron nutritional status on Cd absorption from various forms by wheat plants ( Triticum aestivum L.) and the influence of accompanying anions on wheat uptake of cadmium. The results demonstrated that the Cd uptake by wheat plants from nutrient solution and also soil was affected by iron nutritional status.The Cd concentration in shoot and root of wheat plants grown in iron deficient nutrient solution was higher than that in iron sufficient nutrient solution.Adding various compounds of cadmium to nutrient solution,the content of Cd uptake by wheat plants showed the following pattern:Cd(NO 3) 2>CdSO 4>CdO.