以引进的俄罗斯杨树新品种高加索白杨、N12、N2、N21和SL-1为参试品种,对其硬枝扦插苗生根、生长量和生物量进行了系统比较研究。结果表明:参试品种在硬枝扦插生根率、苗高、地径、地上生物量、地下生物量和全株生物量等方面存在显著差异,SL-1品种的硬枝扦插苗生根率、苗高、地径、地上生物量、地下生物量和全株生物量指标均优,其中苗高、地径、地上生物量、地下生物量和全株生物量等5项指标优于对照小黑杨品种,其硬枝扦插生根率、生长量和生物量最高。
The rooting ,growth & biomass of introduced new varieties of Russian poplars (Populus schischkinii ,N12 , N2 ,N21 and SL-1) were compared systematically .Result shows that :there are significant differences in rooting rate ,seedling height ,ground diameter ,aboveground biomass ,belowground biomass & the biomass of the whole plant of hardwood cuttings .SL-1 is excellent in rooting rate ,seedling height ,ground diameter ,aboveground biomass ,be-lowground biomass & whole plant biomass of hardwood cuttings ,among which the seedling height ,ground diame-ter ,aboveground biomass ,belowground biomass & whole plant biomass are optimal than that of the control variety (Populus simonii × P .nigra);rooting ,growth & biomass of hardwood cuttings of SL-1 are the highest .