| The contents of eight mineral elements including N,P,K,Na,Ca,Mg,Mn and Fe in HA (Haloxylon ammodendron parasitized by Cistanche deserticola.Ma.) and CK(Haloxylon ammodendron un-parasitized by Cistanche deserticola.Ma) were measured during different development stages.The results showed that there was no remarkable difference between HA and CK in the content of the macro-elements N,P,K,Ca,Na and the micro-elements Fe and Mn except for the element Mg.As for the parasitic plant Cistanche deserticola,the content of the element N was obviously higher than that in HA and CK,and the element P was obviously higher than that in HA,but not obviously different from that in CK;the content of the six elements K,Na,Ca,Mg,Mn and Fe were all remarkably lower than those in HA and CK.Meanwhile,the influence of Cistanche deserticola parasitizing to the absorbing coefficient of mineral elements in Haloxylon ammodendron was also studied.According to the absorbing coefficient,those elements could be arranged as N>P>Na>Mg>Ca>K>Mn>Fe,which was caused mainly by the fact that Cistanche deserticola belonged to the whole parasitic plant. |