巨柏修剪截口愈合生长研究  

Wound Closure of Pruning on Cupressus gigantea

作　　者：姚祺 赵垦田[1] YAO Qi;ZHAO Kentian(Resources&Environment College,Tibet Agriculture&Animal Husbandry University,Nyingchi Tibet,860000,China)

机构地区：[1]西藏农牧学院资源与环境学院,西藏林芝860000

出　　处：《高原农业》2021年第1期57-63,共7页Journal of Plateau Agriculture

基　　金：巨柏人工繁育和大树移栽试验(中国电建集团成都勘测设计研究院有限公司、华能雅鲁藏布江下游水电开发筹备工作办公室技术服务项目);研究生创新项目“巨柏移植前生长调控的研究”(YJS2020-21)。

摘　　要：本研究旨在探讨枝条基径、修剪方式和保护措施对巨柏枝条修剪截口愈合的影响。以10a巨柏幼树为试验材料,于2019年7月对直径分别为5 mm~10 mm、10 mm~15 mm、15 mm~20 mm的一级侧枝,采用锯切和刀切方式进行疏除,并对刀具修剪后的枝条截口进行覆膜和不覆膜2种处理,1 a内每隔3个月调查截口的愈合情况。结果表明,5 mm~10 mm直径截口愈合效果显著高于其它直径;刀切截口比锯切截口愈合效果好;覆膜有利于截口早期愈伤组织的形成和生长,但对后期愈合率的影响不显著。The purpose of this study was to investigate the effects of base diameter,pruning and protective measures on the cut healing of Cypresses gigantea.In July 2019,the branches with diameters of 5~10,10~15 and 15~20 mm were pruned with 10 a Cupressus gigantea as the test material.There were two kinds of cutting methods,namely saw cutting and knife cutting,and two kinds of treatment,which were coated after knife cutting and non-coated after knife cutting.The healing process of the cut was measured every 3 months for 1 year.The results showed that the annual variation of the healing rate was similar to the annual phenology of tree growth.The results also showed that the healing effect of the 5-10 mm diameter section was significantly higher than that of other diameters.Furthermore,the knife cut section had better healing effect than the saw cut section,and film covering was beneficial to the formation and growth of callus in the early stage of the cut,but it had no significant effect on the healing rate in the later stage.

关 键 词：巨柏 修剪 截口愈合 

分 类 号：S723.3[农业科学—林木遗传育种]