广西喀斯特地区割草结合植树方法对飞机草的控制效果  

Control effects of mowing in combining with planting tree species on Chromolaena odorata in Karst region of Guangxi,China

作　　者：唐赛春[1] 吕仕洪[1] 潘玉梅[1] 韦春强[1] 刘明超[1,2] 蒲高忠[1] 

机构地区：[1]广西壮族自治区中国科学院广西植物研究所,广西桂林541006 [2]广西师范大学生命科学学院,广西桂林541004

出　　处：《应用生态学报》2011年第7期1944-1948,共5页Chinese Journal of Applied Ecology

基　　金：广西科学研究与技术开发计划项目(桂科攻0992026-5;0719005);国家科技支撑计划项目(2006BAC01A10);广西自然科学基金项目(2011GXNSFE018005)资助

摘　　要：基于树种、植树密度、割草频率3种因素3个水平共9种处理的正交试验,研究了广西喀斯特地区机械割草结合植树的方法对飞机草的控制效果.结果表明：2006—2008年,9种处理下飞机草的相对盖度、高度、密度和生物量均逐年减小,减幅分别为89.7%~99.3%、41.6%~81.2%、61.4%~83.2%、91.7%~97.8%.头状花序的数量在各处理中均显著低于对照（P〈0.05）.3种因素对飞机草生长影响的顺序为：割草频率〉树种〉植树密度.控制飞机草的最佳组合方式为每个样方（4 m×4 m）种植茶条木4株、每年割草2次.A field experiment was conducted in 2006-2008 to evaluate the control effects of three mowing frequencies in combining with planting three tree species with three densities on the Chromolaena odorata in southwestern Karst region of Guangxi.In all treatments,the relative coverage,height,density,and aboveground biomass of C.odorata were decreased by 89.7%-99.3%,41.6%-81.2%,61.4%-83.2% and 91.7%-97.8%,respectively,and the capitulum number was significantly lesser than that in the control（P0.05）.The control effects on the growth of C.odorata were in the order of mowing frequency tree species planting density,and the optimal control mode was mowing twice one year and planting four plants of Delavaya yunnanensis per plot（4 m×4 m）.

关 键 词：飞机草 喀斯特地区 植树 割草 

分 类 号：S451.1[农业科学—植物保护]