银中杨不同根幅造林试验  

Planting Experiments of Populus alba×P.berolinensis with Different Root Spread Range

作　　者：梁亚丽[1] 李树森[2] 丛培荣 

机构地区：[1]黑龙江省泰来县林业局,黑龙江泰来161000 [2]黑龙江省森林与环境科学研究院 [3]黑龙江省尚志国有林场管理局老街基林场

出　　处：《防护林科技》2005年第3期17-17,23,共2页Protection Forest Science and Technology

摘　　要：采用拉丁方设计方法,较系统地研究了不同根幅银中杨大苗造林成活率及当年高、径生长量的关系。结果表明:根幅35 cm和25 cm的较15 cm的造林成活率分别提高28和21个百分点;根幅35 cm和25 cm的较15 cm的当年高生长量分别提高246%和65%,当年径生长量分别提高83%和37%;在黑龙江省西部半干旱地区,采用二根一干或二根二干的银中杨大苗造林,根幅以35 cm左右为宜。Adopting Ladingfang designing method,afforestation survival ratio of Populus alba×P.berolinensis with different root spread range and relationship between tree height and DBH in the same year were studied systematically.Results showed that survival rate of root spread range of 35cm and 25cm increased 28% and 21% respectively than that of 15cm.Height accretion of root spread range of 35cm and 25cm increased 246% and 65% respectively than that of 15cm.Radial increment in the same year increased 83% and 37% respectively.

关 键 词：银中杨 根幅 造林试验 成活率 高生长 胸径生长 

分 类 号：S792.11[农业科学—林木遗传育种]