中幼龄毛白杨优良无性系生物量增长与分配规律研究  

Biomass Increase and Its Distributive Law of High Quality Clones of Young and Half-mature Populus tomentosa Carr

作　　者：李淑玲[1] 冯建灿[1] 茹光欣[1] 安士有[2] 毕会涛[1] 王瑞芬 

机构地区：[1]河南农业大学,郑州450002 [2]河南省南阳市林科所,南阳473034 [3]河南省获加县林技站,获加453800

出　　处：《中南林学院学报》1998年第2期14-19,共6页Journal of Central South Forestry University

基　　金：河南省科技攻关项目!"毛白杨优良无性系选育与工业用材定向培育技术研究";94105100

摘　　要：采用相对生长法研究了中幼龄毛白杨优良无性系生物量增长及其各器官相对生物量的积累和分配规律．结果表明：毛白杨生物量以干才占主导；6a生以前，各器官生物量分配不稳定，6～8a生以后，其分配趋势为干材＞根＞枝＞干皮＞叶；3个优良无性系每年单位面积的生物量和固定的太阳能均为对照的2～4倍；净光合效率比对照高24．41％～27．81％．并建立了各器官生物量增长的数学模型．This paper studies the biomass increase of high quality clones of young andhalf-mature Populus tomentosa Cars.,and the accumulation and distributive law of relativebiomass in the tree parts. The results are as follows. Biomass in the stem takes the majority of the total bidmass. Before the age of 6,the,biomass distribution in tree parts is pot stable,and after the age of 6-8,the distributive tendency in tree parts is:stem biomass>rootbiomass>branch biomass>stem bark biomass>leaves biomass. The biomass and the solarenergy absorbed by the 3 high quality clones in unit area per year are 2-4 times of thoseof the control trees. The net photosynthesis efficiency of the selected clones is 24.44%- 27. 81% higher than that of the control trees. The mathematical models for biomass increase in all the tree parts are given.

关 键 词：毛白杨 无性系 生物量 分配规律 

分 类 号：S792.117[农业科学—林木遗传育种] S718.556[农业科学—林学]