不同除草剂对广金钱草室内安全性及田间除草效果  

Security of Different Herbicides to Desmodium styracifolium and Their Efficacy on Weeds

作　　者：郭成林[1] 覃建林[1] 马永林[1] 王彦辉[1] 黄辉晔[1] 梁海波[1] 马跃峰[1] 

机构地区：[1]广西农业科学院植物保护研究所广西作物病虫害生物学重点实验室,南宁530007

出　　处：《农药》2017年第5期384-387,共4页Agrochemicals

基　　金：广西农科院基金项目(桂农科2016JZ08);广西作物病虫害生物学重点实验室基金(15-140-45-ST-4);国家重点研发计划项目(2016YFC1202101)

摘　　要：[目的]筛选出适用于防除广金钱草田杂草的除草剂。[方法]采用茎叶喷雾法,测定不同除草剂对广金钱草的室内安全性及田间除草效果。[结果]精喹禾灵和灭草松在试验剂量下对广金钱草安全,以有效量1∶28.8比例混合,在894~2235 g a.i./hm^2药量下对试验多数单双子叶杂草有较好的防效,药后30 d总草鲜质量防效达82%以上;其他药剂在常用量下对广金钱草产生明显药害。[结论]精喹禾灵和灭草松适用于广金钱草田除草,可根据田间草相选择或混合使用。[Aims] The study aims to screen out herbicides for control ofDesmodium styracifolium in field. [Methods] The security of different herbicides to D. styracifoliurn and their efficacy on weeds were evaluated by foliar spraying method. [Results] Quizalofop-p-ethyl and bentazone were safe to D. styracifoliurn at test doses, and their mixture at ratio of 1：28.8 active quantity had better control effect on most experimental monocot and dicot weeds at 894-2235 g/ha doses, on 30th day after treatment, the total grass fresh weight control effect was more than 82%. Other tested herbicides displayed obvious phytotoxicity to DI styracifolium at recommended dose. [Conclusions] Quizalofop-p-ethyl and bentazone are suitable for control of weeds in D. styracifolium field, which should be selected according to the field weed species.

关 键 词：广金钱草 除草剂 安全性 除草效果 

分 类 号：S451.223[农业科学—植物保护]