乌桕矮化控冠试验  

Dwarfing effect of several measures on Sapium sebiferum

作　　者：向珊珊[1] 邓先珍[1] 王晓光[1] 张风[1] 宋菲[1] 

机构地区：[1]湖北省林业科学研究院,湖北武汉430075

出　　处：《经济林研究》2012年第4期141-144,共4页Non-wood Forest Research

基　　金：湖北省研究与开发计划项目"乌桕生物质能源林基地建设关键技术研究与示范"(2008BBB020);林业公益性行业科研专项"生物质能源树种乌桕新品种定向选育研究与示范"(200704035);湖北省林业局重大科研项目"乌桕新品种选育及快繁技术及集约化经营技术研究与示范"(HLKJ2007-1)部分研究内容

摘　　要：为降低乌桕树高,从生长延缓剂施用、不同类型砧木嫁接、大树修剪3个方面开展了乌桕矮化控冠栽培试验。试验结果表明:每株乌桕施用有效成分1 g的多效唑,矮化效果最好,对地径和冠幅影响不显著;选用亲和力好的砧木和矮化品种接穗嫁接育苗,可有效降低树高;乌桕大树连续3 a修剪可有效控制树高,即第1年在主干60～80 cm处截干,第2年留3～4个萌发枝,夏季在1/2处短截,第3年在春梢1/2处短截。In order to reduce height of Sapium sebiferum, dwarfing cultivation experiments were carried out through applying growth retardant, grafting with different stocks and pruning big tree. The results show that it has the best dwarf effect to use 1 g paclobutrazol per plant, and has no significant influence on ground diameter and crown area. It can effectively reduce height of tree, to graft by using the stock with better affinity and the scion from dwarf cultivars. Pruning for 3 years can control height ofS. sebiferum trees, that is cutting at 60 cm to 80 cm of trunk at the first year, and cutting at the half of reserved 3 or 4 germination branches in the second year, and then cutting at the half of spring twig in the third year.

关 键 词：乌桕 矮化效应 多效唑 矮壮素 嫁接 修剪 

分 类 号：S62[农业科学—园艺学]