摘要
为防治玉米大斑病,复配不同杀菌剂进行室内毒力测定及田间药剂筛选试验。采用菌丝生长速率法试验,测定不同复配杀菌剂对玉米大斑病病菌的室内毒力作用,并进行了田间药效试验。结果表明,氟菌唑与双胍三辛烷基苯磺酸盐质量比1∶7时,共毒系数极值为495.33,有效成分量为250 g.a.i./hm^2对玉米大斑病的田间防效达84.88%;氟嘧菌酯与氟环唑质量比5∶1时,共毒系数极值为439.19,有效成分量为120 g.a.i./hm^2对玉米大斑病的田间防效达83.95%。氟菌唑与双胍三辛烷基苯磺酸盐、氟嘧菌酯与氟环唑复配防治玉米大斑病具有增效作用,可有效控制该病发生。
In order to control the northern leaf blight of corn,different fungicides were used to determine the virulence in the laboratory and screen the fungicides in the field.Mycelium growth rate method was used to test and determine the field efficacy trials and laboratory toxicity.The results showed that when the mass ratio of triflumizole to iminoctadine trialbesilate was 1∶7,the maximum value of the CO toxicity coefficient was 495.33,the amount of effective components was 250 g.a.i./ha,and the field control effect on northern leaf blight of corn was 84.88%.When the mass ratio of fluoxastrobin to epoxiconazole was 5∶1,the maximum value of CO toxicity coefficient was 439.19,and the amount of effective components was 120 g.a.i./ha.The field control effect of fluoxastrobin on northern leaf blight of corn was 83.95%.The combination of triflumizole and iminoctadine trialbesilate,fluoxastrobin and epoxiconazole can effectively prevent the occurrence of northern leaf blight of corn.
作者
范文忠
张晓翔
王永志
孙达
吕雪
FAN Wenzhong;ZHANG Xiaoxiang;WANG Yongzhi;SUN Da;LYU Xue(Jilin Agricultural Science and Technology College,Jilin 132101;Jilin City Academy of Agricultural Sciences,Jilin 132101;Jilin Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crops in Northeast,Ministry of Agriculture,Changchun 130033,China)
出处
《东北农业科学》
北大核心
2020年第3期45-49,共5页
Journal of Northeast Agricultural Sciences
基金
教育部高等教育司2018年产学合作协同育人项目(201801219001)
农业部东北作物有害生物综合治理重点实验室开放基金课题(DB2018-10)。
关键词
玉米大斑病
杀菌剂
复配
增效
Northern leaf blight of corn
Fungicides
Compounding
Synergia
