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.
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 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.
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。
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