【摘要】 为选择适合平原农区的优良品种，进行了毛白杨优良无性系选育试验。经过８ａ造林测定，筛选出３１１９、５０５７、００８４、３８８２、５０７３、５０４８等６个优良无性系，均为雄株，其材积生长量分别超过对照（易县毛白杨雌株）的６９．１％、５３．３％、２６．０％、１５．４％、９．８％、４．４％、７．２％；形质指标均优于对照更多还原

【Abstract】 The experiments were conducted to select the superior clones of Populus tomentosa for the afforestation in plain agricultural area. By 8 years experiment of planting, six superior clones (3119, 5057, 0084, 3882, 5073, 5048) were selected out, all were staminiferous plants. The volume growth of the selected clones was higher than that of the control by 691%, 533%,260%,154%,98%,44% and 72%,and their morphological characteristics were also better.更多还原