四种芽前除草剂对堤防草坪冬春性杂草株防效的影响  

Effects of 4 Kinds of Preemergence Herbicides on Control Efficiency of Winter-spring Herbs

作　　者：刘宏[1] 吴方林 王中国 吴绪松 邢亚萍[1] 胡惠蓉[1] 尹少华[1] 

机构地区：[1]华中农业大学园艺林学学院/园艺植物生物学教育部重点实验室,武汉430070 [2]洪湖分蓄洪工程管理局,湖北荆州434007

出　　处：《湖北农业科学》2014年第7期1557-1560,共4页Hubei Agricultural Sciences

基　　金：湖北省水利重点科研项目(HBSHLKY201212)

摘　　要：比较了氟乐灵、精异丙甲草胺、甲草胺和乙草胺4种芽前除草剂在不同施用时间、不同施用浓度对堤防草坪冬春性杂草株防效的影响。结果表明，精异丙甲草胺株防效最好，氟乐灵和乙草胺次之．甲草胺最差；施药浓度越大株防效越好；施药时期以9月20日株防效最好，9月10日次之，9月30日最差；最佳方案为选择0．25mL／m^2的精异丙甲草胺于9月10～20日或0．42mL／m^2的氟乐灵于9月20日施药。Effects of four kinds of preemergence herbicides including trifluralin, dual gold, alachlor and acetochlor on con- trolling winter-spring herbs when applied in various concentration and timing were studied. The results showed that the control effectiveness of dual gold was the best, trifluralin and acetochlor were the second, and alachlor was the worst. The greater the concentration of herbicide was, the better the results were. The best timing of an application was on 20th Sept. with the next on 10th Sept., and the worst on 30th Sept. The optimal scheme was high concentration of dual gold applied on 10th to 20th Sept., or high concentration of trifluralin on 20th Sept.

关 键 词：芽前除草剂 施用时期 施用浓度 杂草株防效 

分 类 号：S451.23[农业科学—植物保护]