植物营养与肥料学报2013,19(6）：1356-1365 Journal of Plant Nutrition and Fertilizer
doi=10. 11674/zwyf.2013.0609
镉处理根表铁膜对水稻吸收镉、锰、铜、锌的影响
刘侯俊'，李雪平'，韩晓日",2*，高晓宁3
（1沈阳农业大学土地与环境学院，土肥资源高效利用国家工程实验室，沈阳110866：
2沈阳农业大学农学院，辽宁省生物炭工程技术中心，沈阳1108663辽宁省环境科学研究院，辽宁沈阳110161）摘要：本试验利用营养液和土壤培养系统，研究不同Fe、Cd处理下根表铁膜对水稽吸收Cd、Mn、Cu、Zn的影响。 8H,0的形式供应）。营养液中Fe和Cd的水平分别为0、10、30、50、80、100mg/LFe和0、0.1、1.0mg/LCd。收获后测定水稽根表、根中和地上部Cd、Fe、Mn、Cu、Zn含量。试验结果表明，两种培养方式下，随若介质中Fe 浓度的增加，水稽根表铁膜(DCB-Fe)逐渐增多。土壤培养方式下，根表铁膜中Cd和Mn含量随铁膜量增加而略有增加所有元素含量均表现为根中大于铁膜中。营养液培养条件下，根表铁膜中Mn和Cu含量在高量Fe供应时
化。根中和地上部Cd、Mn、Cu、Zn含量一般都随介质中Fe浓度的增加而下降，Cu和Zn含量在加Cd处理中下降。以上结果证明,铁膜对Cd的吸附阻挡能力有限，对Mn、Cu、Zn的吸附作用因培养方式和元素种类不同而有
所差异，植株体内微量元素含量的下降主要与它们之间的相互抑制作用有关。关键词：铁膜；；水稽：微量元素：铁
中图分类号：Q945.12
文献标识码：A
文章编号：1008505X(2013)06135610
InfluenceofironplaqueonCd,Mn,CuandZnuptakesof riceseedlings
underdifferentCdtreatments
LIU Hou-jun', LI Xue-ping',HAN Xiao-ril.2*, GAO Xiao-ning
(I National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources/ College of Land and Enzironment, Shenyang Agricultural Unizersity, Shenyang I10866, China ; 2 Liaoning Biochar Engineering and Technology Research Center,
College of Agronomy, Shenyang Agricultural Unirersity, Shenyang I10866, China; 3 Liaoning Academy of
Environmental Sciences, Shenyang 110161)
Abstract: In this study , soil and hydroponics culture systems were used to investigate the effects of iron plaque on the uptakes of Cd, Mn, Cu and Zn by rice seedlings supplied with different levels of Fe and Cd . The three iron levels(as FeS04- 7H20) were 0, 1 and 2 g/kg in soil culture , and the six levels were 0.10,30,50,80 and 100 mg/L in solution culture.The cadmium levels (as 3CdSO,·8H, O) were 0,2 and 10 mg/kg in soil, and 0,0.1 and 1. O mg/L in solution. After harvest, the contentrations of Fe , Cd, Mn, Cu and Zn in iron plaque, roots and shoots were determined. The results showed that the iron plaque (Dithionite-Citrate-Bicarbonate DCB Fe) on root surface was increased with the increase of Fe concentration in the two culture systems . In the soil culture experiment , the Cd and Mn contentrations in the iron plaque (DCB - Cd and DCB - Mn) are slightly increased with the increase of external Fe, and the concentrations of all elements in roots are higher than those in the iron plaque . In the hydroponics culture experiment , the Mn and Cu contentrations in the iron plaque are increased only when higher Fe is added, and the contentrations of Mn, Cu and Zn in the iron plaque are higher than those in roots. The
收稿日期：2013-01-14
接受日期：2013-05-04
基金项目：国家自然科学基金资助项目（41001192)；沈阳农业大学植物营养与新型肥料学术创新团队；沈阳农业大学博士后基金资助项目：
辽宁省自然科学基金创新团队项目（LT2010096）资助。
作者简介：刘侯俊（1976—），女，山西方山县人，博士，副教授，主要从事植物营养生理研究。E-mail；liuhoujun_0@163.com
*通信作者E-mail：hanxiaori@163.com