广元市桉树的分布与生长情况调查  

Survey of Distribution and Growth of Eucalyptus Trees in Guangyuan City

作　　者：吴志文[1] 

机构地区：[1]广元市林业和园林局,四川广元628000

出　　处：《四川林业科技》2014年第1期36-39,48,共5页Journal of Sichuan Forestry Science and Technology

摘　　要：观察调查广元市桉树的种类、分布与生长情况及产业化利用状况。发现20世纪60年代以来种植的大叶桉、小叶桉、细叶桉等在1976年发生历史上-8℃严重低温,而大部份冻死后的幸存者及后来种植的桉树在海拔450 m^600 m范围生长,胸径可达20 cm^50 cm。在广元大叶桉较小叶桉受冻害及风灾的影响大。2007年以来引种试验的尾叶桉等生长受冻害的影响。由于冻寒和风灾的双重作用。建议,探索桉树不耐寒机理,可进一步开展选育或引种适宜广元种植的耐寒、抗风、速生桉树品种试验,如北种南移,甘肃文县、陕西阳平关的桉树品种在广元试验种植,或高海拔低移;可在广元适宜的小气候环境和土壤条件种植适宜的桉树品种;研究和推广受冻害和风灾桉树的科学营林技术措施。Investigation were made of the species, distribution, and growth situation of Eucalyptus trees and their utilizing situation of industrialization in Guangyuan. It was found that Eucalyptus robusta Smith, and Eucalyptus tereticornis Smith,etc. planted since the 1960s experienced a hazardous frost at -8℃ in 1976. Most of the survivals in the frost and the later-planted Eucalyptus trees grew at the altitudes from a- round 450 m to 600 m and the breast-height diameters could reach 20 cm to 50 cm. In Guangyuan,Euca- lyptus robusta Smith suffered more from freezing injury and windstorm disaster than Eucalyptus tereticornis smith. The growth of Eucalyptus urophylla which was introduced for test has been affected by the freezing injury since 2007. Due to the dual effect of freezing injury and windstorm disaster, it is suggested that, ex- ploring the frigorific mechanism of Eucalyptus can help to further develop breeding or introducing the cold-resistant, wind-resistant and fast-growing varieties which are suitable for growing in Guangyuan.

关 键 词：桉树 广元市 栽培历史 生长情况 引种 耐寒机理 耐寒抗风灾速生品种选育 

分 类 号：S792.39[农业科学—林木遗传育种]