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1、元江县尾叶桉扦插苗造林适应性调查研究摘要:对用尾叶桉扦插苗2001〜2004年在元江县造林的林木进行胸径及树高生长调查及分析.结果表明:在490m的低海拔干热河谷地区,4.5a生尾叶桉的平均树高达20.1m,年均高生长4.5m;平均地径达22.8cm,年均生长5.1cm,其生长量均超过国家速生树种标准的4倍以上;在海拔1100、430、800、1500m范围内,尾叶桉树高及胸径生长差异不显著,与海拔2100m和1750m生长的树木相比,差异达极显著水平,说明尾叶桉的适生海拔范围是430〜1500m;
2、在相同立地条件下,尾叶桉平均年树高生长量分别比兰桉、赤桉和拧檬桉高0.8、0.7和0.9m,平均胸径生长量比兰桉、赤桉和拧檬桉高1.8、3.2和3.3cm.关键词:尾叶桉;扦插苗;造林适应性;元江县中图分类号:S792.39S723.132.1S718.5文献标识码:A文章编号:1671-3168(2011)03-0141-04AdaptabilityResearchofE.caphyllaCuttingsSeedlingsAfforestationInYuanjiangWENQiong-wen【s
3、up】l【/sup】,HUANGYong-liang【sup】2【/sup】,YANGHua-qing【sup】3【/sup】(1.YuanjiangForestTechnologyExtensionStation,Yuanjiang,Yunnan653300,China2.QinglongchangTownForestryStation,Yuanjiang,Yunnan653307,China3.DongeTownForestryStation,Yuanjiang,Yunnan653302,Chi
4、na)Abstract:ThediameterandheightgrowthoftreesplantedinYuanjiangbyusingeucalyptuscaphyllacuttingsseedlingfrom2001to2004wereinvestigatedandanalyzed.Theresultsshowedthat:inlow-altitudeof490mdry-hotvalley,theaverageheightof4.5yearoldeucalyptuscaphyllatreew
5、entupto20.1m,yearlyaverageheightgrowthof4.5maveragegrounddiameterto22.8cm,theaverageannualgrowthof5.1cm,itsvolumegrowthexceededthenationalfast-growingspeciesformorethanfourtimesthestandardataltitudeof1100,430,800,1500mwithin,thedifferenceofeucalyptushi
6、ghandDBHgrowthwasnotsignificant,withtreesataltitudeof2100mand1750m,thedifferencereachedasignificantlevel,indicatingthesuitableelevationrangeforeucalyptuscaphyllaare430to1500m.Inthesamesiteconditions,averagetreeheightofeucalyptuscaphyllawashigherrespect
7、ively,thanthebluegum,Eucalyptusandlemoneucalyptusheightof0.8,0.7and0.9m,averageDBHgrowthofeucalyptuscaphyllahigherthanbluegum,eucalyptuscaphyllaandlemonof1.8,3.2and3.3cm.Keywords:eucalyptuscaphyllacuttingseedlingplantingadaptabilityYuanjiang收稿日期:2011-0
8、3-10;修回日期:2011-04-15.作者简介:温琼文(1969-),女,云南元江人,高级工程师.从事林木种苗培育、质量监督检验及种质资源收集管理、开发利用等研究工作.省略尾叶桉(EucalyptuscaphyllaS.T.BIake)【sup】[1]【/sup】属桃金娘科(Myrtaceae)乔木树种.是中国广东湛江桉树研宄中心近年来培育出的无性系新品种,适合于热带、亚热带气候,与其它桉树相比,具速生、干形通直、树冠密集【sup】[2]【/sup】,产量可提高6