一、内蒙古大兴安岭林区地处寒温带,由于冬季低温严寒,在长期的造林工作中,冻害现象经常发生,成为一个常见的灾害。对于人工造林的质量和保存率影响很大。因此,有关冻害的危害程度,形成条件和相应的防治措施,是我们开展人工造林所必须解决的技术问题。据观察:形成冻害的气候因素:因为内蒙古大兴安岭林区为强烈的大陆性气候,冬季严寒,最低温度可达 First, Inner Mongolia Daxinganling Forest is located in the cold temperate zone, due to cold and cold in winter, in the long-term afforestation work, the phenomenon of frost damage often occurs, becoming a common disaster. The quality of afforestation and preservation rate have a great impact. Therefore, the degree of damage caused by frost damage, the formation of conditions and the corresponding prevention and control measures are the technical problems we must solve to carry out artificial afforestation. It is observed: the formation of frost damage climate factors: Inner Mongolia Daxinganling forest area as a strong continental climate, the winter cold, the minimum temperature up to