盐碱生境对星星草吸收Na￣+及Na￣+在体内区域化分布的影响

Effects of Salinealkali Habitat on Absorption of Na+ by Puccillia tenuiflora and Its Distribution in Vivo

对星星草在盐碱生境下，植物体吸收Ｎａ＋、Ｋ＋以及随着植物体的生长，Ｎａ＋的分布及在不同部位的动态变化等方面进行了研究，表明随着土壤盐碱程度加强，星星草体内Ｎａ＋吸收低于Ｋ＋，Ｎａ＋区域化分布比较集中，幼嫩器官分布较少，成熟器官分布较多，星星草体内的Ｎａ＋随着植物生长正向积累，主要集中于５、６、７三个月。

bsorption of Na+ and K+ by Puccillia tenuiflora growing in salinealkali habitats and Na+ contents in different parts of plants were examined.The results showed that the plants absorbed more K+ and less Na+ as soil salinealkali intensified.Na+ was more in matured and less in young parts of plants.Na+ in the plants accumulated as plant growth which mainly occurred during the period of May to July.