三年生云南沉香幼林生长研究

The Growth of Three Years Old Young Forest of Aquilaria yunnanensis

在云南省云南沉香主要栽植区的6个不同试验点,对3a生云南沉香幼林树高、地径、保存率等进行了观测研究。结果表明:不同试验点云南沉香树高、地径生长量差异显著,保存率无差异;生长量呈现由低海拔向高海拔、由南向北、由砖红壤向红壤、赤红壤过渡递减趋势;在勐养镇试验点生长最好,在思茅整碗生长最差;在景洪及普洱地区应优先选择低海拔、热量高、砖红壤的地域栽植。

Tree height, diameter and preservation rate of three years old young forest of Aquilaria yunnanensis in six experimental plots were observed. The results showed： i） there was significant difference in tree height and diameter and no difference in preservation rate; ii） the growth was best in the experimental land of Mengyang ,and the Zhengwan of Simao was the worst; iii）the growth performed declining trend from south to north, from low altitude to high altitude and from laterite to red earth with lateritic red soil; iv） Aquilaria yunnanensis should be planted in Jinghong and Pu＇er areas with low altitude, high heat and laterite soil.