The Growth Condition Comparison of Seeding Period of 1 2 Poplar Varieties in North-east of Ulan Buh Desert
About 12 Poplar varieties including Beikang and 08 series were introduced as research ob-jects,by means of investigating seeding period survival rate,preserving rate,diameter at breast height and new shoots,using the method of subordinate function to study 12 kinds of fast growing Poplar in see-ding stage in North-east of Ulan Buh Desert adaptability to carry on the comprehensive evaluation.The results showed that the survival rate of fast growing Poplar was between 84.12%and 100%.Sample 08-01,Sample 08-07,Beikang 16 -27 had higher survival rate,the preserving rate was between 68.42% and 100%.08 -07,Beikang16 -27,08 -01 had higher preserving rate.Diameter at breast height increment was in the range of 0.13~1.35cm,and 08-09,08-03,08-01 had higher diameter at breast height increment,new shoots increment was in the range of 19.39~103.88cm,and Beikang 16-27,Beikang 16-8,08-03 had higher new shoots increment.To order by subordinate function,08-01,Beikang 16-27 and 08-09 fast growing Poplar at seeding stage were better adapted to the North-east of Ulan Buh Desert,and can be used as fine species of afforestation of protection forest in this area.