Growth response and wound occlusion following green pruning in 3years Corymbia torelliana in South China
A field trial of pruning in 3 year old Corymbia torelliana was established in Zhanjiang in western Guangdong using a randomized complete block design with three replicates including 4 pruning intensities – pruning all branches up to stem diameters of 5,6,7 or 8cm – and 2 methods of wound protection–wax or paint.Measurements of growth and wound occlusion indicators were undertaken for 3 times(prior to pruning and at 7 and 12 months)and 5 times post pruning(0,3,7,9.5 and 12 months)respectively.After the observation period,the effects of pruning on the growth and wound occlusion in 3 year old C.torelliana were as follows:(1)Height growth was impeded,DBH growth was promoted,stem taper was decreased and plumpness was increased.(2)The optimal pruning intensity in category of 5,6,7 and 8cm for tree growth was 8cm.(3)Lower wound occlusion rates occurred with stronger pruning intensities and the optimal pruning intensity in category of 5cm,6cm,7cm and 8cm for wound occlusion was 7cm or 8cm.(4)Protection of wounds with oil painting could promoted occlusion better than protection with wax.(5)The fastest wound occlusion occurred in section Ⅱ and Ⅲ(2.5-5.35m).(6)Factors including pruning intensity,wound protection method,wound height section and wound size played important roles in influencing wound occlusion.
Corymbia torelliana pruning pruning intensity protection growth wound occlusion
Liu Qiu Chen Shaoxiong Li Zhihui Roger Arnold
Hunan Academy of Forestry,Changsha,Hunan 410004,China China Eucalypt Research Center,30 Mid Renmin Dadao,Zhanjiang,Guangdong 524022,China Central South University of Forestry and Technology,Changsha,Hunan 410004,China
国内会议
长沙
英文
193-203
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）