Analysis of Introduced Poplar Varieties in the Yili Region of Xinjiang
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 BeijingOOOl 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.
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万方数据
