CAJ | 학술논문

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M g在叶中含量最高，花盘中 P含量高于其他部位，C u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∶ M n∶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。
이HNO3＋ HClO4소해향일규근、경、협、화반등기관，채용ICP-AES측정하투관구염감협박하향일규식주대십충광질원소적흡수화적루。결과표명：（1）Fe ，Mn ，Zn ，Ca ，Na재향일규근부함량최고，K함량재경중최고，B화M g재협중함량최고，화반중 P함량고우기타부위，C u함량재향일규각기관간무명현차이；（2）향일규기관간광질원소루적량차이표현위화반중Ca ，Mg ，P ，Cu ，B ，Zn루적량최고，근Na ， Fe ，Mn루적량최고，경K루적량최고；（3）향일규전주상량광질원소루적량비치위K∶Ca∶Mg∶P∶Na＝16.71∶5.23∶3.86∶1.23∶1.00，미량광질원소적루량비치위Zn∶ Fe∶B∶ M n∶Cu＝56.28∶27.75∶1.93∶1.17∶1.00；（4）염분협박대향일규광질원소흡수적영향인부위급원소충류각이，근부광질원소함량대토양염분변화최위민감，경、협차지，화반원소함량변화동태교위복잡。
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 (HNO3 + 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.