霍山三种石斛与其栽培土壤中微量元素分布关系研究

CORRELATION ANALYSIS OF TRACE ELEMENTS IN DENDROBIUM HUOSHANENSE WITH THAT IN THEIR CULTURAL SOIL

本文应用灰色系统理论，对安徽霍山三种石斛与其栽培土壤中15种微量元素分布状况进行了关联分析．结果发现.其关联序为γ_根＞γ_叶＞γ_茎；γ_(-年茎)≈γ_(二年茎)≈γ_(三年茎)；γ_(霍斛)＞γ_(铁斛)＞γ_(铜斛).可见霍山石斛与其栽培土壤间的微量元素相关性比其它石斛强，因而可通过增施微肥的办法来提高霍山石解中某些人体必需微量元素的含量．

The correlation of fifteen kinds of trace elements in three species of Dendrobium with that in their cultural soil has been studied through the Grey System Theory.Among the correlation coefficients there are the relations as follows:γ_root＞γ_leaf＞γ_stem;γ_lyear ≈γ_2years≈γ_3years;γ_huoshanense＞γ_candidum ＞γ_moniliforme.The above results indicate that the distribution of trace elements in Dendrobium huoshanense gives a more significant correlation than that in D.candidum and D.moniliforme with that in cultural soil.So,the content of the necessary trace elements can be increased by fertilizing the soil some trace elemental fertilizer.