广东镇海林场引种花梨初期生长表现

Early Growth Performance of Dalbergia odorifera T.Chen Introduced in Zhenhai Forest Farm

花梨在广东镇海林场引种栽培3 a,生长调查结果表明,该树种在引种地生长表现较好,2 a生平均树高2.48 m,平均径1.78 cm。立地对花梨生长的影响显著,树高、胸径和冠幅均以较好的立地条件生长好。各坡位以山坡下生长最好,2 a生平均高达2.88 m,径2.29 cm;中坡生长次之,上部生长差,高仅1.94m,径1.29 cm。各坡向相比,西坡径高生长量比东坡分别大9.6%和4.1%。造林时要因地制宜,要培育大径材必须用好地栽培。

The trees of Dalbergia odorifera T. Chen, of high economic value, were introduced and planted from Hainan to Zhenhai Forest Farm two years ago. The investigation reults show that they generally grow well in the initial two years, with mean height 2.48 m and mean diameter at breast height 1.78 era. The growth of the tree species were markedly influenced by site condition, the growth of height, diameter and canopy were closely correspond to the site condition. They grow well in the lower parts of hills, conversely on the top. The mean height and mean diameter at breast height were 2.88 m and 2.29 cm in the lower parts, 2.61 m and 1.77 cm in the middle, and 1.94 m and l. 29 cm in the top respectively. The direction of the hills less affects the growth of the tree spe- cies. The height and diameter in the west slope was increased by 9.6% and 4.1% compared with in the north direction. Results indicated the growth of the young trees was affected by site conditions, so it is necessary to match batter site to the species, particular for cultivating its large diameter timber.