杨树是我省营造防护林、用材林、护堤岸林和城乡四旁绿化的主要树种。解放以来,我省已营造了较大面积的杨树人工林,对加速我省绿化速度、支援工农业建设、改变自然面貌、保田增产起到了很大作用。但是,由于当时缺乏经验,造林前规划设计不当,树种选择不周,以及幼林抚育不及时等原因,致使某些地区的杨树造林不见林,树木生长不良,未老先衰,形 Poplar is our province to create shelterbelt, timber forest, retaining embankment shore forest and urban greening around the main tree species. Since the liberation, our province has created a large area of ​​poplar plantations, to speed up the speed of greening in our province, supporting industrial and agricultural construction, changing the natural appearance, increased production of insurance has played a significant role. However, owing to the lack of experience at that time, improper planning and design of pre-afforestation, poor selection of tree species, and lack of timely tending of young forests, there was no evidence of poplar afforestation in some areas, poor growth of trees, no premature decay,