紫叶紫薇高接换冠技术研究  

Study on Crown Grafting Technology of Purple-leaf Lagerstroemia indica

作　　者：李茂娟 崔强 徐毓泽 张海霞 廖祯妮 何才生 LI Maojuan;CUI Qiang;XU Yuze;ZHANG Haixia;LIAO Zhenni;HE Caisheng(Forestry Institute of Chenzhou City,Chenzhou,Hunan 423000)

机构地区：[1]郴州市林业科学研究所,湖南郴州423000

出　　处：《中国农学通报》2023年第25期21-26,共6页Chinese Agricultural Science Bulletin

基　　金：湖南省林业局,中央财政林业科技推广示范资金项目“紫叶紫薇良种及高效繁育技术示范推广”([2021]XT10号)。

摘　　要：研究旨在为紫叶紫薇高接换冠提供理论依据和技术支撑,以满足园林绿化市场对大规格紫叶紫薇新品种的需求。以‘赤红紫叶’(Lagerstroemia indica‘Ebony Fire’)‘、火红紫叶’(L.indica‘Ebony Flame’)、‘丹红紫叶’(L.indica‘Ebony Embers’)3个紫叶紫薇品种为材料,开展不同砧木粗度、接穗粗度、嫁接方法、嫁接时期等对紫叶紫薇高位嫁接成活率和生长量影响的研究。结果表明,高接换冠技术适用于不同的紫叶紫薇品种。嫁接在春、夏、秋季都可进行,但以春季最佳。南方地区2月下旬—3月上旬嫁接,成活率能达到90%以上。嫁接时宜选择粗度2 cm以上的枝条为砧木;宜选用粗度0.8~1.2 cm的接穗,穗条过细或过粗都不利于接穗的成活。嫁接方法以三刀切接法效果最好,嫁接成活率可达91.6%。春季嫁接套袋处理能明显加快嫁接口愈合,嫁接成活率可提升近1倍。研究结果可为优良紫叶紫薇品种的规模化生产提供嫁接操作技术支持。The purpose of this study is to provide theoretical basis and technical support for the crown grafting of purple-leaf Lagerstroemia indica,so as to meet the demand for the large-scale L.indica varieties of the landscape market.The survival rate and increment of three cultivars of purple-leaf L.indica‘(Ebony Fire’,‘Ebony Flame’and‘Ebony Embers’)were studied by different rootstock diameter,scion diameter,grafting method and grafting period.The result showed that the crown grafting technology was applied to different cultivars of purple-leaf L.indica,which could carry out in spring,summer and autumn,and the best time was in spring.The survival rates were more than 90%by the crown grafting from late February to early March in southern China.The diameter of branches above 2 cm was better selected as rootstocks for grafting,and the best diameter of scion was 0.8-1.2 cm.The best grafting method was three knife cutting,and the grafting survival rate was 91.6%.Grafting bagging treatment in spring could significantly accelerate the healing of graft union,and the grafting survival rate could be nearly doubled.The study can provide grafting technical support for the large-scale production of elite purple-leaf L.indica varieties.

关 键 词：紫薇 高接换冠 成活率 生长量 嫁接时期 

分 类 号：S685.13[农业科学—观赏园艺]