【作者】 王有兵； 严毅； 何银忠； 周庆宏； 罗建中； 李子光； 王亚婷；

【Author】 WANG Youbing;YAN Yi;HE Yinzhong;ZHOU Qinghong;LUO Jianzhong;LI Ziguang;WANG Yating;Haikou Forest Farm of Kunming;China Eucalypt Research Center;

【机构】 昆明市海口林场； 国家桉树研究开发中心；

【摘要】 2013年冬季昆明遭遇了低温雨雪天气的影响,"南方国家桉树种质资源库建设项目"海口林场建设点2年生邓恩桉和史密斯桉不同程度受冻。调查结果表明:邓恩桉家系中,冻害程度重度以上占7.7%,中度以下占92.3%;史密斯桉家系中,冻害程度重度以上占56.7%,中度以下占43.3%。两种桉树间树高达显著性水平(P<0.05),冻害级别和冻害指数达极显著水平(P<0.01)。邓恩桉和史密斯桉的树高与冻害级别相关性呈现负相关,相关系数分别为-0.374﹡﹡、-0.234﹡,随着树高的增加,冻害级别降低。更多还原

【Abstract】 Kunming suffered the effects of cold weather in 2013 winter, E.dunnii and E.smithii has different degree freezing damage in Haikou Forest Farm, the 2 species of eucalyptus from the " the Project Construction of South Eucalyptus Germplasm Base " that has planted 2 years. Survey results showed that in the E.dunnii families the degree of damage severe and above accounted for 7.7%, moderate below accounted for 92.3%; in E.smithii families the degree of damage severe and above accounted for 56.7%, moderate below accounted for 43.3%. Two species of tree height reached significant level(P<0.05), freezing damage grade and freezing index reached extremely significant level(P<0.01). E.dunnii and E.smithii of tree height and freezing damage grade correlation showed a negative correlation, the correlation coefficients were-0.374* *,-0.234*, with the growth of tree height, the degree of damage decreased.更多还原