美洲黑杨×青杨杂种无性系引种育苗试验  

Nursery Trial of the Introduction of Populus deltiodes×P.cathayana Clone

作　　者：周永学[1] 樊军锋[1] 蔺林田[2] 高建社[1] 

机构地区：[1]西北农林科技大学林科院,陕西杨陵712100 [2]杨凌职业技术学院,陕西杨陵712100

出　　处：《西北林学院学报》2004年第1期58-60,共3页Journal of Northwest Forestry University

基　　金：陕西省科技厅科技攻关项目"杨树新品种选育及油松遗传改良研究"(2002K02 G3 1)

摘　　要：以陕林4号为对照,按照随机区组设计方法对引进的美洲黑杨×青杨4个杂种无性系的苗木生长量和抗病虫能力等指标进行了调查研究。结果表明,93 8 17号无性系苗木生长快,抗病虫能力强。1a生苗年平均高生长量为3.82m,比无性系93 8 18、93 8 6和93 8 20分别高7.9%,13.4%和15.1%,比陕林4号小2.6%;地径生长量为2.32cm,比93 8 18、93 8 6和93 8 20分别大7.4%,11.0%和16.6%,比对照陕林4号大12.6%。2a平均受害指数为15.6,与对照品种相当,是引进4个美洲黑杨×青杨杂种无性系中最低的。对苗期生长表现进行了观察,93 8 17号苗木扦插成活率高,出苗齐,苗木生长均匀,干形好,落叶迟,是一个很有引种前景的美洲黑杨×青杨杂种无性系。This paper deals with the growth quantity and resistance to diseases in seedling period of four Populus deltiodes×P.cathayana cl. introduced. The results show that the No.'93-8-17'clone growed quickly and appeared high resistance to diseases than other clones.The growth of height in 1-year nursery stock is 7.9%,13.4%,15.1% taller than other three clone separately,and 2.6% smaller than No.'SL-4'.The growth of base diameter is (7.4)%,11.0%,16.6% higher than other three clone separately,and 12.6% higher than No.'SL-4'. The average index harmed by pests and diseases in two years is 15.6, similar to No.'SL-4',and is the lowest one of the four clones introduced. A observation of growing character in seedling period concluded that the No.'93-8-17' clone has a high survival rate, an even emergence of seedling,a well-distributed growth,a good seedling-trunk, and a late leaf falling. Consequently, introduction of P. deltiodes×P.cathayana cl. '93-8-17' in Guanzhong area of Shannxi has a broad prospects.

关 键 词：美洲黑杨 青杨 无性系 引种试验 

分 类 号：S722.7[农业科学—林木遗传育种]