四川大头茶苗木构件水平的邻体干扰效应

The neighbouthood modular interference effects of seedlings of Gordonia acuminata

用方差分析、多重比较等技术对缙云山四川大头茶６年生苗木的构件研究，发现株内构件间的干扰，导致主枝分枝角度随高度的上升而减小．其结果对空间、光资源的竞争有利．株间邻体干扰导致高干扰区的构件，主枝死亡率较高，生长速率较低，但对径粗、株高无明显影响．

Based on the techniques of variance analysis and multiple comparison etc., the neighbourhood modular interference effects within and between seedlings of Gordonia acuninata on Jinyun Mountain were studied. These seedlings were six years old. It was found that the interference among main branch es situated at different height on the stem of a seedling facilitated the decrease of their branching-angles with increasing height of the stem. This contributed to the conmpctition for space and light. The neigh bourhood modular interference between seedlings increased the mortality and decreased the growth rates of the modules in the high interference zone significantly. Neverthless, it had no significant influ ences on the stem height and the base diameter of the seedlings.