美洲黑杨在浙北海涂引种研究

Studies on Introduction to Populus deltoides in Coastal Beach in Northern Zhejiang Province

1997 年春，上虞海涂引进了美洲黑杨无性系，经 3 年观测，其平均胸径和蓄积分别为 10.96cm 和 51m3/hm2，与对照意杨相比，分别增长 13.1% 和 30.8%，其增长幅度随林龄的增加而增大，美洲黑杨对天牛和刺蛾有明显抗性。

：Clones of Populus deltoides were introduced in the coastal beach of Shangyu ,in spring of 1997.In three years, their breast diameter and volume on average reached 10.96cm and 51m3/hm2, respectiively, increasing by 13.1% and 30.8% ,compared with those of Italy poplar . Populus deltoides had significant resistance against longicorn and Cnidocampa flavescens.