桉树幼苗菌根接种及其生长效应的研究

Inoculation Methods for Mycorrhizal Fungi and Their Effect on Eucalyptus Seedlings

采用5种不同的方法对桉树幼苗进行人工菌根接种的结果表明,均有不同程度的促生效果及菌根感染率。其中,内生菌根(Glomus epigaeum)菌土接种的苗木高为对照苗木的247％,地径为对照的193％;外生菌根菌(Pisolithus tinctorius)纯培养接种苗高生长比对照增加17.4％,地径增加9.9％;P.t孢子粉剂接种的苗高生长比对照增加103％;罐栽法纯培养芽苗接种的以Scleroderma(H4331)为好,对赤桉和尾叶桉高生长可增加42.83％～44.29％,Loccaria(E4100)对赤桉高生长增加53.9％;Mycobeads对刚果12号桉扦插苗的接种效果以Pisolithus(H53)及Laccaria(E439)为好,高生长分别比对照增加21.9％及20.8％,地上部分干重也明显增加。

Five mycorrhizal inoculation methods were tested on Eucalyptus seedlings. All of them were effective. The mycorrhizal infection percentage of seedling reached 10 %^-48%. Among them, inoculations of the VA mycorrhizal fungi (Glomus mosseae and G. epigaeum) and the Pisolithus tinctorius spores were best with an increase of over 103 %~247 % in seedling height and 180 %~193 % in ground level diameter than that of the check. When the seedlings were inoculated in the tubes, seedling height increased by 10 %~53 % than that of the check. Nursery testing results showed that the inoculation on cuttings of Eucalyptus ABL 12 with 'Mycobeads' might increase 16.8 %~21.9 % in seedling height and 21.2 %~39.5 % in dry weight of the seedlings.