CAJ | 학술논문

　　为了研究盐分胁迫对向日葵幼苗K＋、Na＋吸收和分配的影响，在大田和室内盆栽环境下通过不同浓度盐分胁迫，研究K＋、Na＋的变化，结果表明：随土壤盐含量的升高，向日葵根、茎、叶中Na＋含量均有所增加，K＋表现为减少，因而K＋/Na＋值明显下降；各器官K＋/Na＋值表现为：叶＞茎＞根部，且叶与根和茎的K＋/Na＋值差异显著。随着盐碱胁迫的增强，各器官的K＋/Na＋下降程度存在差异，其中叶的K＋/Na＋下降显著。不同品种的K＋、Na＋含量及K＋/Na＋不同，耐盐性强的品种在盐碱胁迫下K＋/Na＋值降低幅度小。油用向日葵吸收的Na＋主要积累于根部，阻止Na＋向地上部运输的拒盐机制是向日葵具有较强耐盐性的主要原因之一。
　　위료연구염분협박대향일규유묘K＋、Na＋흡수화분배적영향，재대전화실내분재배경하통과불동농도염분협박，연구K＋、Na＋적변화，결과표명：수토양염함량적승고，향일규근、경、협중Na＋함량균유소증가，K＋표현위감소，인이K＋/Na＋치명현하강；각기관K＋/Na＋치표현위：협＞경＞근부，차협여근화경적K＋/Na＋치차이현저。수착염감협박적증강，각기관적K＋/Na＋하강정도존재차이，기중협적K＋/Na＋하강현저。불동품충적K＋、Na＋함량급K＋/Na＋불동，내염성강적품충재염감협박하K＋/Na＋치강저폭도소。유용향일규흡수적Na＋주요적루우근부，조지Na＋향지상부운수적거염궤제시향일규구유교강내염성적주요원인지일。
In order to research on changing of K+,Na+of sunflower under salinity stress .In the fields and in-door potted environment,the changing of K+and Na+of sunflower under different concentrations of salinity stress was studied.The results showed that:with increasing of soil salinity,sodium content of roots,stems,and leaf of sun-flower increased,content of potassium reduced ,and thus the K+/Na+was significantly decreased;value of K+/Na+of leaves was higher than of stems than of roots ,and the value of K+/Na+of leaves was significantly different from of roots and of stems.As salinity stress enhancement ,the K+/Na+of various organs decreased differently ,especially the ratio of potassium and sodium decreased significantly .Different varieties had different content of potassium and sodium,the ratio of potassium and sodium of salt-tolerant varieties decreased less under salinity stress .Sodium of oil sunflower absorption accumulated in the roots ,mechanism of refusing salt that prevented sodium transporting to the aboveground is one of the main reason of sunflower with strong salt tolerance .