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对３ ａ 生Ｉ６９ 杨树伐根萌芽更新与植苗造林的成活率和生长量的连续观测结果表明，在幼龄期，伐根萌芽更新比植苗造林用工少，成活率高，生长量大，而且可以节省大量的造林和抚育管护经费，经济效益显著。
The results of continuous observation on the survival rate and growth rate of poplar sprout regeneration and seedling afforestation of 3-year-old poplar I69 showed that in the young age, the sprout regeneration was less effective than the seedling afforestation, with high survival rate and large growth , But also save a lot of afforestation and nurturing management and maintenance funds, significant economic benefits.