钾营养对牛膝生物量和多糖含量的影响

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。

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

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.