不同苗龄云南松各器官生物量的分配特征研究  

Study on Biomass Allocation Pattern of Pinus yunnanensis at Different Seedling Ages

作　　者：汪梦婷[1,2,3] 孙继伟 李亚麒 王军民[2] 陈诗[2] 吴俊文 蔡年辉[2] 许玉兰[1,2,3] Wang Mengting;Sun Jiwei;Li Yaqi;Wang Junmin;Chen Shi;Wu Junwen;Cai Nianhui;Xu Yulan(Key Laboratory for Forest Genetic and Tree Improvement&Propagation in Universities of Yunnan Province,Southwest Forestry University,Kunming Yunnan 650233,China;Key Laboratory of Ministry of Education on Forest Resources Conservation and Use in the Southwest Mountains of China,Southwest Forestry University,Kunming Yunnan 650233,China;Key Laboratory of State Forestry Administration on Biodiversity Conservation in Southwest China,Southwest Forestry University,Kunming Yunnan 650233,China)

机构地区：[1]西南林业大学云南省高校林木遗传改良与繁育重点实验室,云南昆明650233 [2]西南林业大学西南山地森林保育与利用省部共建教育部重点实验室,云南昆明650233 [3]西南林业大学国家林业局西南地区生物多样性保育重点实验室,云南昆明650233

出　　处：《西南林业大学学报（自然科学）》2020年第3期46-51,共6页Journal of Southwest Forestry University：Natural Sciences

基　　金：国家自然科学基金项目(31760204,31860203)资助。

摘　　要：为研究不同苗木年龄云南松苗木生物量分配的变化规律,对云南松苗木各器官生长性状和生物量积累状况进行2~4 a的跟踪调查,分析各器官的生长量、生物量及分配特征。结果表明:随着苗木年龄的增加,云南松苗木的根、茎、叶各器官所积累的生物量均呈上升趋势。云南松不同苗木年龄之间各器官生物分配存在显著差异;其中2年生云南松苗木分配给叶的生物量较多,而分配给根的较少;随着苗龄的增加,生物量分配的优先选择次序发生了变化,4年生云南松苗木选择优先于茎的生长。In order to study the changes of biomass allocation of Pinus yunnanensis at different seedling ages,a follow-up survey on the growth traits and biomass of various organs of P. yunnanensis was conducted for 2-4 years, and the biomass allocation ratio and biomass ratio of each organ were compared. The results showed that with the increase of seedling age, the biomass of root, stem and leaf of P. yunnanensis seedlings increased. There were significant differences in the biomass allocation of organs among P. yunnanensis seedlings at different seedling ages. Among them, 2-year-old P. yunnanensis seedlings allocated more biomass to leaves and less to roots.With the increase of seedling age, the order of preference for biomass allocation changed, and 4-year-old P. yunnanensis seedlings had chosen to focus on stem growth.

关 键 词：云南松 苗龄 器官 生长特征 生物量 

分 类 号：S791.257[农业科学—林木遗传育种]