摘要
为选取适合广东肇庆高要地区推广种植的优良土沉香品种,选择已推广种植的 12 个土沉香无性系:紫棋、油叶子、糖结、凹身、西瓜叶、金丝油、张勺波浪、蓝宝石、香使 2 号、红宝石、金勺、棋楠壹号为研究对象,测定 12 个品系幼龄时期的树高、地径和保存率等生长指标.结果表明:12 个品系的保存率在75%～96%之间.在树高方面,凹身、红宝石和棋楠壹号的树高生长最高,平均高度均超过 140cm;油叶子生长速度最慢,平均树高仅为 80cm.在地径方面,以凹身的地径生长最大,平均地径达 37.26mm.在高径比方面,以西瓜叶、金勺最大,平均高径比最大分别为 5.39 和5.58.综合早期生长性状,凹身生长速度最快、地径生长最大、适应性最强,适合在肇庆高要区生长.
Abstract
In order to screen the excellent Aquilaria sinensis suitable for promotion and planting in Gaoyao area,Zhaoqing,Guangdong,12 Aquilaria sinensis Clones(Ziqi,Youyezi,Tangjie,Oushen,Xiguaye,Jinsiyou,Zhangshaobolang,Lanbaoshi,Xiangshi Ⅱ,Hongbaoshi,Jinshao,Qinan Ⅰ)were selected as the research objects,analyzing the growth indexes during the young stage such as tree height,ground diameter,and preservation rate.The result showed that the preservation rate among the 12 clones was between 75% and 96% .In terms of tree height,Oushen,Hongbaoshi,and Qinan I had the highest tree height growth,with an average of over 140 cm.Youyezi was the slowest growing variety,with an average height of only about 80 cm.In terms of ground diame-ter,Oushen had the largest ground diameter,with an average ground diameter of 37.26 mm.In terms of height-diameter ratio,Xiguaye and Jinshao were the largest,and the average height-diameter ratios were 5.39 and 5.58.Combined with the early growth traits,Oushen has a fast growth rate,the largest ground diameter growth,and the strongest adaptability,which is suitable for growth in Zhaoqing Gaoyao area.
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