临沂生生园复干银杏生长特性  

The Growth Characteristics of Multi-trunked Ginkgo in Shengsheng Garden of Linyi

作　　者：付兆军[1] 邢世岩[1] 李真[1] 刘莉娟[1] 任娟霞[1] 刘源[1] 

机构地区：[1]山东农业大学林学院,泰安271018

出　　处：《植物遗传资源学报》2013年第4期764-770,共7页Journal of Plant Genetic Resources

基　　金：国家科技支撑计划课题(2012BAD21B04)

摘　　要：产生复干是银杏个体发育过程中一个普遍现象。本研究以临沂生生园全国最大复干银杏群落为研究对象,采用每木检尺的方式对园内复干银杏进行调查。结果显示,生生园内银杏共385株,雌株379株,占98.44%。平均树高20.9 m,平均总胸径0.93 m,平均母干胸径0.33 m,冠径在5.0～15.0 m范围内,枝下高平均6.3 m。368株有复干,复干率为98.58%,每株复干数平均为4.6个,最大复干高平均为12.5 m,胸径平均0.18 m,复干与母干距离平均为0.61 m,复干与母干夹角平均为10.5°。34株无萌蘖,萌蘖平均株数为38株,萌蘖高平均1.11 m,萌蘖与母干最大距离平均0.73 m。该片银杏林原桩有240年历史,现存复干银杏系从原桩萌发形成,树龄53年。本研究对生生园复干银杏的起源、性别比例、复干与银杏适应性的关系、复干的利用等进行了探讨。It is a common phenomenon that Ginkgo biloba L.produces multi-trunks in the process of development.The multi-trunked ginkgo community in Shengsheng garden of Linyi is the biggest one in our country.We use tally method to measure multi-trunked ginkgoes in the garden.The result shows that there are 385 ginkgoes in the garden with 379 females which accounts for 98.44%.The average height is 20.9 m,the mean total DBH is 0.93 m.The mean parent stem DBH is 0.33 m.The crown diameter is ranged from 5.0 to 15.0 m.The mean height under the lowest branch is 6.3 m.17 ginkgoes grow without multi-trunk.The ratio of multi-trunked individuals is 98.58% with an average number of multi-trunks per tree of 4.6.The heighest multi-trunk is 12.5 m with DBH of 0.18 m.The mean distance between multi-trunk and parent stem is 0.61 m.The mean angle between multi-trunk and parent stem is 10.5°.34 ginkgoes grow without sproutings,The average number of sproutings is 38 with mean height of 1.11 m.The mean biggest distance between sproutings and parent stem is 0.73 m.The original stumps of these ginkgoes are 240 years old and the present trunks are 53 years old which has sprouted from the original stumps.We have discussed about multi-trunked ginkgo origin in the Shengsheng garden,sex ratio,the relationship between multi-trunks and adaptability of Ginkgo biloba L.,the use of mult-trunks and so on.

关 键 词：银杏 复干 萌蘖 生长特性 适应能力 

分 类 号：S792.95[农业科学—林木遗传育种]