香梓楠栽培试验研究

香梓楠 (Michelia hedyosperma L aw)又名香籽含笑 ,为热带和南亚热带木兰科(Magnoliaceae)常绿乔木 ,国家三级保护树种。香梓楠主干通直圆满 ,出材量大 ,寿命长 ,木材为散孔材 ,纹理通直 ,色泽美观 ,干燥后少开裂不变形 ,耐腐力强 ,加工容易 ,适用做横梁、桁条、门窗框以及车船、家具等优良用材 ;此外其花芳香 ,可提取芳香油 ,枝叶浓绿 ,树冠塔形 ,挺拔秀丽 ,是很优美的绿化树种 [1 ] 。其天然分布于海南白沙、昌江、乐东、琼中 ,广西那坡、靖西、龙州、凭祥 ,云南西畴、西双版纳 ;地理范围在 1 9°2 0′～ 2 3°2 0′N,1 0 0°～ 1 1 0…

Cultivation trial of Michelia hedyosperma

The results of seedling stage trial showed that with the pattern of sowing seeds as they are collected, transplanting in the row spacing of 15 cm×20 cm, shading and under normal cultivation conditions, the mean height and basal diameter of 16 month old seedlings were 72.9 cm and 0.98 cm,respectively. The survival rate of afforestation of bare rooted seedlings reached as high as 98.5%. The increment peak of tree height and DBH is in May August. The growth period is in April September and the stagnant period of growth is in January March and October December. At the age of 4 years old, the current annual increments of height and DBH were the maximum. The mixed stand of M. hedyosperma and Cunninghamia lanceolata has well stand structure. Under the optimal mixing treatment, the mean tree height and DBH of 4 year old M. hedyosperma are 3.99 m and 6.18 cm, while that of C. lanceolata are 5.05 m and 8.55 cm, which is 10.1% and 19.1% higher than that of C. lanceolata pure stand.