杂交榛空中分段压条繁殖技术的研究  

Study on air-sub-layering propagation technology of Corylus heterophylla×C.avellana

作　　者：易米平[1,2] 张日清[3] 董凤祥[2] 王贵禧[2] 

机构地区：[1]长沙环境保护职业技术学院,湖南长沙410004 [2]中国林业科学研究院林业研究所国家林业局林木培育实验室,北京100091 [3]中南林业科技大学,湖南长沙410004

出　　处：《中南林业科技大学学报》2011年第4期84-89,共6页Journal of Central South University of Forestry & Technology

基　　金：中央级公益性科研院所基本科研业务费专项;湖南省研究生科技创新基金项目(2006SX03)

摘　　要：对杂交榛空中分段压条的生根特性进行了研究,旨在找出各种因素对其生根的影响,提高榛子的繁殖效率。以杂交榛当年生枝条为材料,通过田间正交实验,结果表明:IBA3种浓度对其生根指数的影响差异显著,以2 500mg/L生根效果最好;榛子品种对生根效果的影响差异显著,84-254生根效果好于82-11;6月、8月与7月压条在生根率、根长、根数方面的结果差异显著,生根效果7月份好于6月和8月,3种基质只有在生根指数方面有显著差异,草炭土与珍珠岩按一定比例(1:1)混合使用,能够显著提高压条生根效果;上、中、下不同枝段之间生根效果的差异显著,在生根率、根长、根数和生根指数方面都是上段>中段>下段。空中分段压条能够显著地提高榛子的繁殖系数,极大提高榛子的繁殖效率。The rooting characteristics of air-sub-layering of C.heterophylla×C.avellana were studied to find out the impacting factors on rooting,and to improve the breeding efficiency of hazelnut.Taking the one-year-old branches of C.heterophylla×C.avellana as the materials,through the field orthogonal experimental studies,the results show that the three concentrations of IBA had significant impact on root index,2 500 mg / L was the optimized rooting effect.The hazelnut species（cultivars）had effect on rooting with obvious differences,84-254 was better than 82-11 on rooting significantly.The differences of rooting were significant in July,June and August.June was the best in rooting.The three matrix had significantly differences about rooting indices only,peat soil and perlite mixed by a certain percentage（1：1） could increase root layering effect significantly.The upper,middle and lower segments had differences in rooting effect.The order of rooting rate,root length,root number and rooting index from big to small was：upper segment middle segment lower segment.Air-sub-layering propagation could improve the breeding coefficient of hazelnut significantly and the efficiency of hazelnut breeding greatly.

关 键 词：林学 造林 杂交榛 分段压条 繁殖 

分 类 号：S664.4[农业科学—果树学]