吉林省西部地区干旱,几年来营造防护林的主要树种为杨树、榆树,忽略了柳树的栽植。根据观察,柳树多在河边堤旁形成块林,一般平地也有,但不成林,其原因是未能进行柳树播种育苗。柳树的特点是,耐碱、习湿、抗旱、萌芽力强,在护岸、保堤、防风、固砂上起着一定 The drought in the western part of Jilin Province has created poplar trees and elm trees in the past several years and ignored the planting of willow trees. According to the observation, willow trees often form block forests near the banks of the riverside. There are also generally flat but not forested areas due to the failure to seeding willow seedlings. Willow is characterized by alkali, wet, drought, sprouting and strong, in the bank protection, dike, wind, sand play a certain