摘要
为获得优质板桂和企边桂,探讨肉桂(Cinnamamun cassia)中大径材培育技术,以广西防城港肉桂人工林为研究对象,采用砍小留大的原则,分别在造林后5年,10年和14年进行间伐,比较分析了不同间伐强度对林分生长结构及桂皮产量的影响。结果表明,间伐后保留密度Ⅰ(3 100株/hm2)、Ⅱ(2 400株/hm2)、Ⅲ(2 100株/hm2)的3个密度林分中,中大径阶的树木较对照明显增多,单株桂皮产量显著增加,其中,密度Ⅱ林分的平均胸径、平均树高、平均皮厚及单株产量均高于其他密度林分,林分中的中大径阶林木分布较多,是培育肉桂中大径材,获得板桂、企边桂的最佳密度。
Using C cassia artificial forests as materials, which were cutted respectively in 5 years, 10 years and 14 years after afforestation with principle of cutting small and holding big, impacts of different thinning intensities on stand structure and yield of cinnamon were compared and analyzed in order to discuss the cultivation technology of middle-to-large diameter timber, and to obtain cassia lignea board and cassia lignea raised edge with high quality. Results showed that compared with control, the number of trees with middle-to-large diameter timber increased significantly in stands with three different densities after thinning （density I 3 100 plants/hm2, 1] 2 400 plants/hm2, 1I 2 100 plants/hm2）, and yield of cinnamon per plant increased tremendously. Average DBH, average tree height, average bark thickness and yield per plant in density II were higher than the others with more trees with middle-to- large diameter timber, which was the optimal density for cultivating middle-to-large diameter timber, and obtaining cassia lignea board and cassia lignea raised edge.
出处
《广西林业科学》
2015年第4期333-338,共6页
Guangxi Forestry Science
基金
广西林业科技项目(桂林科字[2015]42号)
(桂林科字[2009]10号)
广西"新世纪十百千人才工程"第二层次人选专项资金项目
中央财政林业科技推广项目([2013]TG04号)
关键词
肉桂
间伐强度
林分结构
产量
Cinnamamun cassia
thinning intensity
stand structure
yield
