晋北半干旱风沙区新疆杨晚霜冻害研究  

The Research on Late Frost Damage of Populus bolleana in Semi-arid Sandstorm Area of North Shanxi

作　　者：郭斌[1] 郑智礼[1] 杨飞[1] 姚建忠 赵娟[1] 杨延青[1] GUO Bin;ZHENG Zhi-li;YANG Fei;YAO Jian-zhong;ZHAO Juan;YANG Yan-qing(Shanxi Academy of Forest Sciences, Taiyuan Shanxi, 030012;The Experimental Bureau of Sanggan River High-yielding Poplar Forest of Shanxi Province, Datong Shanxi, 037006)

机构地区：[1]山西省林业科学研究院,山西太原030012 [2]山西省桑干河杨树丰产林实验局,山西大同037006

出　　处：《山西大同大学学报（自然科学版）》2019年第5期59-61,82,共4页Journal of Shanxi Datong University(Natural Science Edition)

基　　金：山西省林业科技创新[2018LYCX7-1];国家重点研发计划课题[2016YFD0600403]

摘　　要：以晋北半干旱风沙区林带内新造新疆杨为研究对象,2017年春季采用漏斗状覆膜抗旱技术进行造林,2018年4月气温出现剧烈变化,进一步探讨晚霜造成的冻害。结果表明:晚霜造成新造新疆杨树干基部距地面约2cm处产生大小不等的韧皮部坏死斑,70%以上的坏死斑朝向为西南方向;林带内不同位置新疆杨的冻害程度和保存率差异显著;林带内树势强的新造新疆杨具有较强的抗冻性;树高12m左右的林带内,距林带8m以上更适宜新造林。建议在晋北半干旱风沙区营造新疆杨林,可在树干基部堆土,能有效降低冻害的发生。Taking the newly planted Populus bolleana in the semi-arid sandstorm area of north Shanxi as the research object, the funnel-shaped film mulching drought-resistant technology was adopted for afforestation in spring 2017, and the temperature in April 2018 showed drastic changes, the freeze injury caused by late frost was further discussed.The results showed that the late frost resulted in the phloem necrosis patches of different sizes at the base of trunk about 2cm from the ground of Populus bolleana, and more than 70% of the necrosis patches were towards the southwest.The freeze injury degree and preservation rate of Populus bolleana were significantly different in different locations in the forest belt. The new Populus bolleana with strong tree potential in the forest belt has strong frost resistance.In the forest belt with the tree height of about 12m, more than 8m away from the forest belt is more suitable for new afforestation.It is suggested to build Populus bolleana forest in the semi-arid sandstorm area of north Shanxi soil may be piled at the base of tree trunk, which will effectively reduce the occurrence of freezing injury.

关 键 词：新疆杨 晚霜冻害 冻害程度 保存率 

分 类 号：S79[农业科学—林木遗传育种]