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本文应用化学分析和统计方法研究了落叶松水曲柳、落叶松黄波罗和红松胡桃楸混交林不同器官营养元素含量。结果表明,大量和微量营养元素含量在混交林中明显不同。从总体上看,大量元素N,P,K,Ca,Mg含量在阔叶树种中较高,而微量元素Cu,Zn,Fe,Mn在阔叶树中含量较低,在针叶树中含量较高。不同的器官比较发现,N,P,K,Mg含量在叶中较高,而在枝、皮和根中含量较低。这些元素含量在新老叶和当年生多年生枝间也明显不同。新生叶和当年生枝往往多于老叶和多年生枝中的含量。这些结果对了解混交林种间关系有重要意义。
In this paper, chemical analysis and statistical methods were used to study the nutrient elements contents in different organs of Larch, Lolium-bracteatum and Pinus koraiensis-mixed forest. The results showed that the contents of macronutrients and micronutrients were significantly different in mixed forest. Generally speaking, the contents of N, P, K, Ca and Mg were higher in broad-leaved tree species, while the trace elements Cu, Zn, Fe and Mn were lower in broad-leaved trees and higher in coniferous trees. Comparison of different organs found N, P, K, Mg content in the leaves higher, but in the branches, bark and roots content is low. The content of these elements is also significantly different between old and new leaves and annual perennial branches. New leaves and current branches tend to be more than the old leaves and perennial branches content. These results are of great importance for understanding the relationship between species in mixed forests.