浙江楠幼树生长节律研究  

Study on the Growth Rhythm of Young Trees of Phoebe chekiangensis

作　　者：汪伟华 WANG Weihua(Haozhai Wood and Bamboo Inspection Station,Forestry Bureau of Jixi County,Xuancheng 245300,Anhui,China)

机构地区：[1]绩溪县林业局浩寨木竹检查站,安徽宣城245300

出　　处：《安徽林业科技》2020年第4期24-26,共3页Anhui Forestry Science and Technology

摘　　要：以绩溪清凉峰国家级自然保护区内2株浙江楠幼树为研究对象,进行为期1年的生长节律观测研究。结果表明,在一个生长周期内,1、2号植株的主梢生长量分别为70 cm、60 cm,主梢生长节律均呈现慢—快—慢,生长高峰期在4月下旬至6月下旬。I级侧枝在6月中旬后,顶芽生长减速,年平均生长量为20.3 cm,之后II级侧枝代替I级侧枝迅速生长,年平均生长量为21.67 cm。I级侧枝4月中旬生长速度最大,此时II级侧枝尚无萌动迹象;5月下旬,II级侧枝开始萌动,6月中旬到7月中旬进入生长高峰期。In this paper,2 young trees of Phoebe chekiangensis from Anhui Qingliangfeng National Nature Reserve in Jixi County were the study objects and a year-long observational study was made on their growth rhythm.The results showed that within a growth cycle,the increments of the trunk tips of No.1 and No.2 trees were 70 cm and 60 cm respectively and the growth rhythm of the trunk tip indicated a slow-fast-slow feature with a growth peak from late April to late June.The growth of the apical buds of ClassⅠlateral branches slowed down after middle June,with an annual mean increment of 20.3 cm,followed by rapid growth of ClassⅡlateral branches with an annual mean increment of 21.67 cm.The maximum growth rate of ClassⅠlateral branches appeared in middle April when ClassⅡlateral branches showed no budding;ClassⅡlateral branches began budding in late May and their growth peak was from middle June to middle July.

关 键 词：浙江楠 幼树 主梢 侧梢 生长节律 

分 类 号：S792.24[农业科学—林木遗传育种]