107杨不同插穗的育苗试验  

Survival and Juvenile Growth of Populus × euramericana(Dode) Guineir cv. ‘Neva'Cuttings from Stem and Branch of Different Parent Shoots and Planting Spaces

作　　者：戴前莉[1] 魏文娟[2] 李金花[1] 张菊[2] 

机构地区：[1]中国林业科学研究院林业研究所,林木遗传育种国家重点实验室,国家林业局林木培育重点实验室,北京100091 [2]河北省唐山市丰南区林业局,河北唐山063300

出　　处：《林业科学研究》2014年第2期284-289,共6页Forest Research

基　　金：中国林业科学研究院林业研究所重点项目(ZD200905);中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB20100004)

摘　　要：黑杨派无性系在世界发达国家的杨木生产中占有重要经济地位，特别是欧美杨无性系具有较强的杂种优势，表现出早期速生、无性繁殖容易、适应性强等特点，适宜于无性系育种。经长期引种实践和栽植历史证明，其适生于我国大部分平原地区，成为我国杨树人工林主栽品种，在杨树工业用材林建设中发挥了巨大作用，蕴藏着极大的丰产潜力。Aiming at meet the demand for poplar seedling in current nursery production, in this study, the stem cut-tings of 1-year-old shoot and branch cuttings in middle and apical positions of 9 year-old P. x euramericana （Dode） Guineir cv. ‘ Neva＇ tree were used to conduct the propagation trial in nursery. The middle and base parts of stem and branch were taken as cuttings in this trial for comparison of survival and juvenile growth. The results showed that the survival, base diameter and height of cuttings followed the order of stem of 1-year-old shoot 〉 branches in middle position of 9 year-old trees 〉 branches in apical position of 9-year-old trees. The survival and growth of cut-tings in space of 0.6 m × 0. 9 m were better than those of 0. 5 m × 0.6 m. The difference of sprout numbers in stool beds between the spaces of 0.5 m × 1.2 m and 0. 5 m × 0.6 m was not significant but the base diameter and length of sprouts in space of 0. 5 m × 1.2 m were greater. The results further confirmed the rule that for propagation of ‘ Neva＇ , 1-year-old stem cutting survived and grew better than branch cuttings of the older trees and large planting space. It is recommended to establish fine stool bed to sprout stem cuttings with adaptable spaces in order to guaran- tee the quality of cuttings.

关 键 词：107杨 扦插育苗 年龄效应 部位效应 扦插密度 采穗圃 

分 类 号：S723.1[农业科学—林木遗传育种]