钾营养对牛膝生物量和多糖含量的影响  

Influence of K^+ on Biomass and Polysaccharides Content of Achyranthes Bidentata

作　　者：谈锋[1] 邓君[1] 

机构地区：[1]西南师范大学生命科学学院,重庆400715

出　　处：《西南师范大学学报（自然科学版）》2001年第6期699-702,共4页Journal of Southwest China Normal University(Natural Science Edition)

摘　　要：研究了钾元素对牛膝生物量和牛膝根中可溶性多糖含量的影响 ,设定了 4个钾离子水平 ,测定了根和冠的生物量 ,根的增粗情况以及根中K+ 浓度和可溶性多糖含量 .发现牛膝根可缓冲环境 [K+ ]对其植株生长的影响 ,且对K+ 有很强的富积能力 .K+ 可促使营养物质向牛膝根运输 ,促进牛膝根的增粗 ,提高单株牛膝根中可溶性多糖含量 .The influence of potassium ion on biomass and polysaccharides content of Achyranthes bidentata was studied. Four teams were set corresponding to four levels of [K +]. The biomass of the roots and shoots of the individuals in every teams were measured,as well as the diameters of the roots and the content of K + and polysaccharides in the roots. It was found that roots of A. bidentata can buffer the influence of the content of K + in environment and strongly collect K +, and that K + can stimulate the transportation of nutritive material to roots and the thickening of roots in A. bidentata , and increase the individual polysaccharides content of A. bidentata.

关 键 词：牛膝 钾离子 生物量 可溶性多糖 根冠比 中药 草本植物 富积能力 

分 类 号：S567.239[农业科学—中草药栽培]