苜蓿田杂草种类调查及除草剂安全性防除效果分析  

Weed Species and Safety of Herbicide in Alfalfa Field

作　　者：马建华[1] 阮孟兵 张怡[1] 张蓉[1] 

机构地区：[1]宁夏农林科学院植物保护研究所,宁夏银川750002 [2]国营暖泉农场,宁夏银川750206

出　　处：《宁夏农林科技》2017年第10期35-38,共4页Journal of Ningxia Agriculture and Forestry Science and Technology

基　　金：国家牧草产业技术体系盐池综合试验站项目(CARS-34-42)

摘　　要：分别选择8~10种目前常用药剂开展了苜蓿地土壤处理和茎叶处理安全性试验。结果表明:土壤处理施药后8 h灌水,5%咪唑乙烟酸AS和48%仲丁灵EC两种药剂对苜蓿安全,施药后30 d防效均能达到92.34%;480 g/L氟乐灵EC和960 g/L精异丙甲草胺EC两种药剂对苜蓿较安全,施药后30 d防效分别达到92.34%和89.90%。茎叶处理,在苜蓿田间杂草3~5叶期施药,5%咪唑乙烟酸AS和84%氯酯磺草胺WG对苜蓿安全,不影响苜蓿正常生长;其他药剂虽对小藜、反枝苋、龙葵等杂草具有良好防效,但对苜蓿有较大药害。The security tests of 8 to 10 kinds of herbicides were carried out respectively to alfalfa field soil and stem leaf.The results showed that irrigation after 8 hours of applying herbicide in soil, 5% imazethapyr AS and 48% butralin EC were safe to alfalfa and the control effect were above 92.34% after 30 d of applying herbicide; 480 g/L fluorin EC and 960 g/L S-metolachlor EC were also safe to alfalfa and the control effect reached 92.34% and 89.9 % respectively after 30 d of applying herbicide. Spraying herbicide at 3~5 leaf stage of alfalfa field weeds, and 84% cloransulam-methyl WG would not effect the normal growth of alfalfa. Although other herbicides had good control effect to weeds such as Chenopodium serotinum L., Amaranthus retroflexus L. and Solanum nigrum L., they had injury on alfalfa.

关 键 词：苜蓿地 杂草 种类 除草剂 安全防治 效果分析 

分 类 号：S451.23[农业科学—植物保护] S482.4