悬铃木枝条含水量对抽条的影响  

Influences of water content of the branches on shoots shriveling of Platanuse

作　　者：赵擎宇[1] 王燕[1] 刁朝蕾[1] 刘桂林[1] 

机构地区：[1]河北农业大学园林与旅游学院,河北保定071000

出　　处：《林业科技开发》2015年第4期58-61,共4页China Forestry Science and Technology

基　　金：住房和城乡建设部软科学项目(R22014116)

摘　　要：抽条影响悬铃木的景观效果,并制约其在北方应用。为了筛选北方适生悬铃木（品）种,以4（品）种悬铃木（一球悬铃木、二球悬铃木、三球悬铃木）以及‘速生法桐’为试验试材,研究枝条含水量和临界含水量与抽条的关系。结果表明,安全越冬的悬铃木含水量呈现先下降后上升的趋势,2014年,4（品）种悬铃木枝条失水主要集中在2月19日至3月1日之间。安全越冬的休眠期枝条含水量与电解质渗出率呈极显著负相关（r=-0.777^＊＊）。对悬铃木枝条临界含水量的测定结果表明,一球悬铃木、二球悬铃木、三球悬铃木三者发生抽条的临界含水量在40%～35%,‘速生法桐’的临界含水量在35%～30%,‘速生法桐’的抗抽条能力更强。Shoots shriveling affects the sight of Platanus and restricts its cultivating region. With the aim of screening suitable species or cultivars to northern China,we took three species of Platanus（ P. occidentalis,P. acerifolia,P. orientalis and one cultivar P. acerifolia‘Fast-crebre scens＇） as the material to explore the relationship between the critical water content,the water content and shoots shriveling of the branches. The results showed that the safe water content during wintering of Platanus raised initially then declineed. In 2014,the water loss of branches of three species and one cultivar in Platanus mainly happened during February 19 to March 1. The branches＇ water content in safe wintering dormant were extremely significant negative correlated to the conductivity（ r =- 0. 777^＊＊）. The critical water content test of Platanus＇ branches showed that the critical water content of the P. soccidentalis,P. acerifolia and P. orienta was from 40% to 35%,while that of the Platanus × hispanica was from 35% to 30%. Which indicted that Platanus × hispanica exhibited stronger shoots shriveling resistance.

关 键 词：悬铃木抽条 含水量 电解质渗出率 临界含水量 

分 类 号：S731.2[农业科学—林学]