乌兰布和沙漠东北部12种杨树品种幼苗期生长状况对比

摘要

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.%以北抗、08等系列的12种引进速生杨品种为研究对象，调查幼苗期成活率、保存率、胸径、新梢长，运用隶属函数法对12种速生杨幼苗在乌兰布和沙漠东北部的适应性进行综合评价。结果表明：速生杨各品种成活率在84.12％～100％之间，其中成活率较高的为08－01，08－07和北抗16－27；保存率在68.42％～100％之间，较高的为08－07、北抗16－27和08－01；胸径生长量在0.13～1.35cm 范围内，较高的为08－09，08－03，08－01；新梢生长量在19.39～103.88cm范围内，较高的为北抗16－27、北抗16－8和08－03。通过隶属函数值进行排序，08－01、北抗16－27和08－09等3种速生杨品种幼苗期在乌兰布和沙漠东北部的生长适应性较好，可以作为该区防护林造林优良品种。