麦冬草坪中多年生杂草空心莲子草的化学防除  

Chemical Control of Perennial Weed Alternanthera philoxeroides in Ophiopogon japonicus Lawn

作　　者：陈月阳 蔡靖萱 陈勇睿 邓维 冯建国[1] 袁树忠[1] CHEN Yue-yang;CAI Jing-xuan;CHEN Yong-rui;DENG Wei;FENG Jian-guo;YUAN Shu-zhong(College of Horticulture and Plant Protection,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]扬州大学园艺与植物保护学院,江苏扬州225009

出　　处：《杂草学报》2021年第1期56-60,共5页Journal of Weed Science

基　　金：扬州园林科学与工程研究院研究专项。

摘　　要：空心莲子草是一种在麦冬草坪中分布广泛、危害严重的多年生杂草,严重影响麦冬的生长与绿化功能。为了有效防除麦冬草坪中的空心莲子草,采用氯氟吡氧乙酸等6种茎叶处理剂开展空心莲子草化学防除试验。结果表明,6种除草剂处理对空心莲子草均有较好的防除效果。其中以200 g/L氯氟吡氧乙酸EC 60 mL/667 m^(2)处理对空心莲子草防效最好,药后30 d的株防效达99%以上,药后40 d仍有92.83%;58%草甘·氯氟吡WP 150 g/667 m^(2)处理次之,药后40 d的株防效仍达84.91%,药后30 d麦冬叶色饱和度与对照无显著差异,说明这2种药剂处理后的麦冬生长正常。39%草甘·三氯吡AS 200 mL/667 m^(2)处理虽对空心莲子草防效较高,但对麦冬不安全,药后10~30 d,麦冬叶色明显黄化,药后30 d叶色饱和度小于40%。示范试验得到了一致的结果。因此,200 g/L氯氟吡氧乙酸EC 60 mL/667 m^(2)、58%草甘·氯氟吡WP 150 g/667 m^(2)可安全地用于麦冬草坪防除空心莲子草。Alternanthera philoxeroides Griseb,a seriously harmful perennial weed,is widely distributed over Ophiopogon japonicus lawn,which seriously affects the growth and greening function of O.japonicus.To effectively control A.philoxeroides,the chemical control experiment was conducted with six foliage-applied herbicides such as fluroxypyr.The result showed that the six herbicides had good control efficacy on A.philoxeroides.Among them,the efficiency of fluroxypyr 200 g/L EC at 60 mL/667m^(2)was best.Its plant control efficacy was more than 99%applied 30 days and still achieved to 92.83%applied 40 days.The efficiency of glyphosate·fluroxypyr 58%WP at 150 g/667 m^(2)was second,with 84.91%applied 40 days.There was no significant difference on chroma(C*)of O.japonicus between the treatments and the control applied 30 days.Thus,O.japonicus grew normally applied the two herbicides.Glyphosate·triclopyr 39%AS at 200 mL/667 m^(2)was selectivity on A.philoxeroides,but not on O.japonicus.And the leaf color of O.japonicus was obviously yellow,and chroma was less than 40%applied 10~30 days.Similarly,the result of demonstration experiment was consistent.Therefore,fluroxypyr 200g/L EC at 60 mL/667 m^(2)and glyphosate·fluroxypyr 58%WP at 150 g/667 m^(2)was selectivity on O.japonicus to control A.philoxeroides.

关 键 词：麦冬草坪 空心莲子草 除草剂 防除效果 安全性 

分 类 号：S451[农业科学—植物保护]