杨树的冻裂与预防的初步探讨

Primarily Discussion on Precaution of Poplar's Frost Crack

杨树人工林冻裂率为60%以上。冻裂的相关因子为品种、密度、郁闭度、林龄、坡向、植被、抚育一次比抚育三次杨树冻裂少,生长量无大差异。试验证明:对杨树进行涂白、包草和抚育一遍、树干周围留草可以预防杨树冻裂。

The frost crack rate of poplar plantation is above 60%.The related factors of frost crack are variety,density,canopy density,forest age,slope direction,vegetation and tending times,in which tending one time has less frost crack than three times,meanwhile,the growth is no significant difference.The experiment shows that poplar's frost crack could prevent by the measures such as white paint,wrapping grass,tending one time and reserving grass around tree trunk.