修剪、断根和基质改良对三角梅叶片SPAD值的影响  

Pruning,Root Cutting,and Matrix Improvement Influence Leaf SPAD of Bougainvillea glabra

作　　者：郭沛楷 温志 傅小霞 张丽华 伍成厚 郑育芬 乐龙胜 刘瑞霞 GUO Pei-kai;WEN Zhi;FU Xiao-xia;ZHANG Li-hua;WU Cheng-hou;ZHENG Yu-fen;LE Long-sheng;LIU Rui-xia(Guangzhou Institute of Forestry and Landscape Architecture,Guangzhou 510405,PRC)

机构地区：[1]广州市林业和园林科学研究院,广东广州510405

出　　处：《湖南农业科学》2024年第8期20-22,28,共4页Hunan Agricultural Sciences

基　　金：广州市科创委重点项目(202002020027);广东省广州市簕杜鹃、木棉国家林木种质资源库。

摘　　要：为给天桥绿化三角梅的更新复壮提供参考,以上桥绿化10 a的小叶紫花三角梅为材料,采用正交试验探究了修剪、断根和基质改良对三角梅叶片SPAD值的影响。结果表明:正交试验的三角梅叶片SPAD值为46.4~55.5,试验30、73和120 d后不同处理间均存在极显著差异;修剪强度对三角梅叶片SPAD值影响极显著,修剪73和120 d后,轻度修剪的SPAD值极显著高于中度和重度修剪;断根和基质改良均不能提高三角梅的叶片SPAD值。This study aims to provide references for the plant renewal and rejuvenation of Bougainvillea glabra on pedestrian overpasses.An orthogonal array was adopted to study the effects of pruning,root cutting,and matrix improvement on the leaf SPAD of B.glabra which had been used for landscaping for 10 years on pedestrian overpasses.The results showed that the leaf SPAD in different groups ranged from 46.4 to 55.5,with significant differences among groups 30,73,and 120 days after treatment.The pruning intensity exerted signifiant effect on SPAD,which was higher in the light pruning group than in the moderate and heavy pruning groups 73 and 120 days after treatment.Neither root cutting nor matrix improvement increased the leaf SPAD of B.glabra.

关 键 词：三角梅 修剪 断根 基质改良 SPAD值 

分 类 号：S685.99[农业科学—观赏园艺]