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对杨树类人工林的培育和选优以及物理力学性能研究的较多,但通过杨树心边材含水率的分布来分析探讨杨树冻裂原因的报导尚罕见。对此,我们分别对黑龙江省经济价值高、分布范围广的大青杨、香杨,纯林面积大的山杨和做为北方优势树种推广的小黑杨、小青黑杨、小黑14杨、B6杨等做了含水率的分布研究。并通过分析比较,推断出心材含水率过高是出现冻裂的原因之一。被冻
There are many studies on the cultivation and optimization of poplar plantations and their physical and mechanical properties. However, it is rare to analyze and analyze the causes of the poplar fissure cracking through the distribution of moisture content of poplar heartwood. In this regard, we respectively, Heilongjiang Province, high economic value, distribution of a wide range of Populus, incense Yang, pure forest area of poplar and Populus as the dominant species in North Populace, Populus simonii, black 14 Yang, B6 Yang and so on the moisture content of the distribution study. And through analysis and comparison, it is inferred that the high water content of the heartwood is one of the causes of the cracking. To be frozen