文献类型：期刊文献

中文题名：4个松属树种幼林生长与抽梢节律比较

英文题名：Comparison of Young Growth and Shoot Rhythm of 4 Pinus Specices

作者：杨雪艳[1] 朱映安[1] 沈乐[1] 徐建民[1] 李光友[1] 韩超[1] 罗亚春[2] 张云东[2] 柏俊[2] 杨勇[2]

第一作者：杨雪艳

机构：[1]中国林业科学研究院热带林业研究所热带林业研究国家林业局重点实验室,广州510000;[2]普洱市卫国林业局,宁洱665100

年份：2019

卷号：17

期号：2

起止页码：663-672

中文期刊名：分子植物育种

外文期刊名：Molecular Plant Breeding

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

基金：国家林业局948项目(2012-4-45)资助

语种：中文

中文关键词：松属;幼林;生长节律;抽梢

外文关键词：Pinus;Young plantation;Growth rhythm;Shoot

分类号：S791.24

摘要：本研究以收集种植在云南省宁洱县小黑江卫国林业局松博园的卡西亚松(Pinus kesiya)、思茅松(Pinus kesiya var. langbianensis)、火炬松(Pinus taeda)和湿加松F2(Pinus elliottii×caribaea) 4个松树的种质保存林为对象,观测2～3年生4个树种胸径、树高和抽梢的月生长变化,在对比分析4个树种生长差异和抽梢次数的基础上,划分了幼林生长阶段,分析了生长节律。3年生时4个树种胸径、树高、抽梢差异性极显著(p<0.01),依据胸径和树高生长由快到慢的顺序,生长优势是卡西亚松>思茅松>湿加松>火炬松,抽梢次数由多到少是火炬松>湿加松>卡西亚松>思茅松。4个树种年生长趋势不尽相同,以胸径、树高划分生长阶段,其生长高峰期次数为:火炬松胸径1次、树高2次;湿加松胸径3次、树高2次;思茅松胸径2次、树高3次;卡西亚松胸径2次、树高3次。4个树种的年抽梢次数和比例也有差异,火炬松和湿加松一年抽梢1～6次,3～5次居多,思茅松和卡西亚松一年抽梢1～4次,2～3次居多。本研究揭示了4个松属树种幼林期的生长节律和抽梢规律,可为幼林的施肥和修枝时期确选等抚育经营提供理论参考。
The study collected the germplasm conservation forests of Pinus kesiya, P. kesiya var. langbianensis, P.taeda and P. elliottii ×caribaea as subjects, which were planted at pine expo of Ning’er forestry bureau, Yunnan Province. DBH, height, and monthly shooting changes of four 2~3 year species were measured. Based on the comparison analysis of growth difference and shooting times of 4 species, young plantation growth stage was divided and growth rhythm was explored. Significant difference were observed on DBH, height and shoot of four3-year species(p<0.01). According to the growth speed of DBH and height from fast to low, the order was P.kesiya>P. kesiya var. langbianensis >P. elliottii ×caribaea >P. taeda. According to the shooting times from most to least, the order was P. taeda>P. elliottii×caribaea>P. kesiya var. langbianensis>P. kesiya. The growth patterns of 4species were different, growth stages were divided on the basis of DBH and height, and the number of the growth peak were: P. taeda(DBH(1);height(2)), P. elliottii×caribaea(DBH(3);height(2)), P. kesiya var. langbianensis(DBH(2);height(3)), P. kesiya(DBH(2);height(3)). The differences were also observed on annual shooting times and proportion of 4 species. P. taeda and P. elliottii×caribaea shooted 1~6 times every year, and 3~5 times were the most, P. kesiya var. langbianensis and P. kesiya shooted 1~4 times every year, and 2~3 times were the most. The study showed the growth rhythm and shooting law of four pine species in young growth, which could provide theoretical references for young forest management, such as selection during fertilizing and pruning.