城市草坪地铜锤草化学防除研究  

Studies on Chemical Control of Pink Woodsorrel (Oxalis corymbosa DC. ) in City

作　　者：黄炳球[1] 罗建军[1] 王小艺[1] 周晓梅 章玉苹[1] 

机构地区：[1]华南农业大学资源环境学院,广东广州510642

出　　处：《华南农业大学学报》2000年第1期47-50,共4页Journal of South China Agricultural University

摘　　要：对９种除草剂和７个复方进行了系统的筛选测定．结果显示，嗪草酮、阿特拉津、草坪２号、草坪３号和草甘膦对铜锤草具有高效，药后 ２０ ｄ防效为 ８８．６６％－９９．１０％；药后 ７ ｄ，草坪 １号对铜锤草致死中浓度 ＬＣ_(５０)为 １０６．６７ ｍｇ／Ｌ，表现出很高的杀草活性，且对草坪草的生长没有任何影响，草甘膦虽然对铜锤草具有高效，但在本试验浓度范围内。Bioactivities of 9 herbicides and 7 admixtures against pink woodsorrel (Oxalis corymbosa DC. ) in city lawm, were systemically determined. The results indicated that metribuzin, atrazine, caoping-2, caoping-3, and glyphosate had high control effectiveness against pink woodsorrel. The control effects were 88.66% - 99. 10% in the 20th day after treatment. The LC50 of caoping-1 against pink woodsorrel was 106. 67 mg/L on the 7th day after treatment, which showed high activity of removing weeds, and safety to lawn grass. The glyphosate had better effect against pink woodsorrel, but the growth of lawn grass were also inhibited to varying degrees at the concentrations used in the experiment.

关 键 词：草坪 铜锤草 除草剂 化学防除 

分 类 号：S451.244[农业科学—植物保护]