新疆伊犁地区杨树品种的引种分析

Analysis of Introduced Poplar Varieties in the Yili Region of Xinjiang

采用扦插试验对30个杨树品种在伊犁地区的适应性进行了研究。结果表明:各种杨树品种的插穗扦插成活率、株高生长量和地径生长量均有显著差异;杨树扦插植株的株高生长量和地径生长量之间存在着极显著的正相关关系(r=0.901 4),其回归方程为:y=0.007 5 x+0.252 2(R2=0.812 5)。北京0001、格鲁德杨的适应性最好,其扦插成活率大于85%,扦插植株的平均株高生长量大于1.3 m,平均地径生长量大于1.3 cm,可以用作营造伊犁地区农田防护林的首选树种。

The adaptabilities of 30 poplar species in Yili region of Xinjiang were studied by cutting experiments. The results showed that cutting survival ratio, height increment and basal diameter increment of different poplar varieties were significantly different; there is extremely significant positive correlation between height increment and basal diameter increment （r=0.901 4）, and the regressive equation is y=0.007 5 x ＋ 0.252 2 （R2= 0.812 5）. The adaptabilities of Beijing0001 and Gelrica were the best, of which the survival ratio was higher than 85%, the average height increment and basal diameter increment of cutting plant were larger than 1.3 m and 1.3 cm, respectively. Therefore, these two species can be chosen as the first choice for farmland shelter forest in Yili region.