ICP-AES分析河套灌区盐碱地向日葵矿质元素吸收与积累  

Analysis of Mineral Elements of Sunflower(Helianthus annuus L.) Grown on Saline Land in Hetao Irrigation District by ICP-AES

作　　者：童文杰[1] 陈阜[1] 文新亚[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193

出　　处：《光谱学与光谱分析》2014年第1期231-234,共4页Spectroscopy and Spectral Analysis

基　　金：国家公益性行业(农业)科研专项(200903001-2-3)资助

摘　　要：以HNO3+HClO4消解向日葵根、茎、叶、花盘等器官,采用ICP-AES测定河套灌区盐碱胁迫下向日葵植株对十种矿质元素的吸收和积累。结果表明:(1)Fe,Mn,Zn,Ca,Na在向日葵根部含量最高,K含量在茎中最高,B和Mg在叶中含量最高,花盘中P含量高于其他部位,Cu含量在向日葵各器官间无明显差异;(2)向日葵器官间矿质元素累积量差异表现为花盘中Ca,Mg,P,Cu,B,Zn累积量最高,根Na,Fe,Mn累积量最高,茎K累积量最高;(3)向日葵全株常量矿质元素累积量比值为K∶Ca∶Mg∶P∶Na=16.71∶5.23∶3.86∶1.23∶1.00,微量矿质元素积累量比值为Zn∶Fe∶B∶Mn∶Cu=56.28∶27.75∶1.93∶1.17∶1.00;(4)盐分胁迫对向日葵矿质元素吸收的影响因部位及元素种类各异,根部矿质元素含量对土壤盐分变化最为敏感,茎、叶次之,花盘元素含量变化动态较为复杂。The absorption and accumulation of ten mineral elements in four kinds of organs （root, steam, leaf and flower disc） in Helianthus annuus L. plants cultured in Hetao Irrigation District under different level of salinity stress were determined by ICP- AES with wet digestion （HNO＋HClO4）. The results showed that; （1） The contents of Fe, Mn, Zn, Ca, and Na were high- est in roots, so was K in stems, B and Mg in leaves and P in flower discs, while no significant difference was detected in the con- tent of Cu among these organs; （2） The cumulants of Ca, Mg, P, Cu, B and Zn were highest in flower discs, so were Na, Fe and Mn in roots and K in stems; （3） In sunflower plants, the proportion of mineral element cumulant for K ： Ca ： Mg ： P ： Na was 16.71 ： 5.23 ： 3. 86 ： 1.23 ：1.00, and for Zn ： Fe ：B ： Mn ： Cu was 56. 28 ： 27. 75： 1.93 ： 1.17 ： 1.00, respectively; （4） The effect of salinity stress on absorption of mineral elements differed according to the kind of organ and element, root was the most sensitive to soil salt content, followed by stem and leaf, and the effect on flower disc seemed complex.

关 键 词：ICP-AES技术 向日葵 矿质元素 盐碱地 

分 类 号：O657.3[理学—分析化学]