圆冠榆嫁接无性系优良类型的选择  

Selection of Superior Clone of Graft about Ulmus densa Litw

作　　者：杨广乐 胡连秋 刘立波 

机构地区：[1]哈尔滨特产研究所,哈尔滨150038 [2]白城市林业科学研究院 [3]伊春市林业科学研究院

出　　处：《东北林业大学学报》2005年第3期11-12,共2页Journal of Northeast Forestry University

摘　　要：通过为期7a的圆冠榆引种栽培实验,研究了圆冠榆5个品种的树冠圆满度、枝条生长量、耐寒性和抗虫能力,选出了适于哈尔滨地区栽培的圆冠榆优良嫁接无性系类型。结果表明: 5类无性系在冠幅所反映的树冠圆满度方面无显著差异,而在枝条生长量方面差异显著。在树木冻害指数方面,无性系NO. 1最低,NO. 3和NO. 2次之,NO. 5和NO. 4最高。圆冠榆5类无性系均能抵抗榆紫金花虫的取食,而对榆小蠹的取食, 5类无性系之间差异显著。冠幅、枝条生长量、耐寒能力和抗虫能力的隶属函数综合评判结果表明,圆冠榆NO. 1无性系好于其它4类无性系,圆冠榆NO. 5无性系不宜在哈尔滨地区进行栽培。The canopy width, growth increment of branch, cold resistance and insect resistance of Ulmus densa Litw introduced into Harbin region from Xinjiang Province were studied by culture experiment for 7 years. The superior clone of graft about Ulmus densa in Harbin regions was selected. The result showed that there were no significant differences between the 5 kinds of clones in canopy width, while there were significant differences in growth increment of branch. The cold damage index of NO.1 clone was the lowest,NO.3 and NO.2 took second place, and that of NO.5 and NO.4 was the highest. The insect resistances of 5 kinds of Ulmus densa to Scolytus multistriatus Marsham. were significantly different. Considering from canopy width, growth increment of branch, cold resistance and insect resistance of the 5 kinds of Ulmus densa, NO.1 clone was superior to other clones, NO.5 clone was not suitable for culturing in Harbin regions.

关 键 词：嫁接无性系 圆冠榆 优良类型 哈尔滨地区 抗虫能力 差异显著 生长量 栽培实验 综合评判 隶属函数 耐寒能力 枝条 耐寒性 榆小蠹 满度 树冠 冠幅 取食 冻害 树木 

分 类 号：S792.117[农业科学—林木遗传育种] S688[农业科学—林学]