柚木嫩枝扦插技术  

Study on the propagation techique with softwood cutting of Tectona grandis

作　　者：马华明[1] 林彦[2] 梁坤南[1] 谢耀坚[2] 彭彦[2] 

机构地区：[1]中国林业科学研究院热带林业研究所,广州510520 [2]国家林业局桉树研究开发中心

出　　处：《林业科技开发》2010年第3期108-110,共3页China Forestry Science and Technology

基　　金："十一五"国家科技支撑计划"优质珍贵用材树种柚木;黄檀;福建柏新品种选育"(编号:2006BAD01A1604)

摘　　要：为了实现柚木良种壮苗规模化生产的要求，研究探讨了柚木嫩枝扦插的关键技术环节。试验表明：影响柚木扦插生根率的生长激素依次为NAA〉IBA〉IAA，最佳生根剂配比为NAA50mg／kg＋IBA100mg／kg＋IAA200mg／kg；综合考虑生根效果和生长两个指标，所选基质以黄心土：泥炭土=1：2（V：V）、黄心土：甘蔗渣=1：2（V：V）和黄心土：河沙=1：1（V：V）三种较好；选择直径小于0．5cm小径级的穗条，带顶芽，顶芽小则全留、保留2—3对叶，大则剪去1／2，其余叶片剪去2／3—3／4，有利于生根。In order to meet the demand of large scale production of Tectona grandis, key techniques of softwood cutting in Tectona grandis was researched. The results had shown： the following order of auxin has effect on teak cutting rooting rate： NAA 〉 IBA 〉 IAA, and the optimal rooting compound was NAA 50 mg/kg ＋ IBA 100 mg/kg ＋ IAA 200 mg/kg. Three kinds of cutting substratas had better rooting rate and growth, namely yellow soil： peaty soil = 1：2, yellow soil： sugarcane bagasse = 1 ： 2 and yellow soil： sand = 1 ： 1 ; small size of young scions were easy to root, additionally, the top bud must be kept and only 2 ~ 3 pair（s） of leaves were necessary to be kept. In order to get higher rooting rate, 1/2 of leave should be cut out when leaves were large enough , and the rest leaves should be cut out 2/3 ~ 3/4.

关 键 词：柚木 嫩枝扦插 生根剂 扦插基质 插条处理 

分 类 号：S688[农业科学—观赏园艺]