青海省海东市乐都区河滩杨树林生长调查  

Investigation on Growth of Poplar Forest in Flood Land in Ledu District of Haidong City in Qinghai Province

作　　者：何海燕 

机构地区：[1]青海省海东市乐都区林业局,青海海东810700

出　　处：《防护林科技》2018年第6期43-45,共3页Protection Forest Science and Technology

摘　　要：对海东市乐都区河滩杨树林生长情况进行了调查。结果显示:乐都区杨树人工林主要分布于湟水及黄河下段沿岸,主要树种有青杨(Populus cathayana)、小叶杨(Populus simonii)等,除有成片的杨树+沙棘(Hippophae rhamnoide s)混交林外,大部分是杨树纯林。林木生育条件不良,病虫害连年蔓延,大部分林木生长衰退。Growth of poplar in flood land in Haidong City was investigated.Result shows that the poplar plantation are concentrated in Ledu area in lower reaches of the Yellow River.The main tree species are Populus cathayana,Populus simonii;most of them are pure poplar forests except for mixed forest of poplar + Hippophae rhamnoides.Forests have poor fertility conditions;diseases and insect pests have spread year after year;most of the trees decline in growth.

关 键 词：乐都河滩 杨树 人工林 生长状况 

分 类 号：S792.11[农业科学—林木遗传育种]