防治小麦纹枯病菌和玉米茎基腐病菌的药剂筛选及复配增效评价  

Screening and Synergistic Evaluation of Fungicides Against Rhizoctonia cerealis on Wheat and Fusarium graminearum on Maize

作　　者：纪祥龙 王开运[2] 武玉国[2] 姜莉莉 JI Xianglong;WANG Kaiyun;WU Yuguo;JIANG Lili(Shandong Agricultural Ecology and Resource Protection Station,Ji’nan 250013;College of Plant Protection,Shandong Agricultural University,Tai’an,Shandong 271018;Shandong Institute of Pomology,Tai’an,Shandong 271000)

机构地区：[1]山东省农业生态与资源保护总站,济南250013 [2]山东农业大学植物保护学院,山东泰安271018 [3]山东省果树研究所,山东泰安271000

出　　处：《中国农学通报》2023年第11期108-112,共5页Chinese Agricultural Science Bulletin

基　　金：国家公益性行业(农业)科研专项“黄淮流域小麦玉米水稻田间用节水节肥节药综合技术方案”(201503130)。

摘　　要：采用生长速率法,测定不同杀菌剂对小麦纹枯病菌和玉米茎基腐菌的室内毒力。针对高效药剂,以孙云沛法评价各配比的增效作用。结果表明,己唑醇和咯菌腈对小麦纹枯病菌的室内毒力最高,EC_(50)值分别为0.094 mg/L和0.312 mg/L;咪鲜胺和己唑醇对玉米茎基腐病菌的室内毒力最高,EC_(50)值分别为0.088 mg/L和0.593 mg/L。己唑醇和咯菌腈按照不同比例复配对小麦纹枯病菌没有明显的增效作用。咪鲜胺和己唑醇按照1:5、1:2和1:1比例复配对玉米茎基腐病菌均表现出明显的增效效果,其中1:5配比的共毒系数为212.2,增效作用最为显著,生产上可考虑用于上述病害防治。The indoor toxicity of different fungicides against Rhizoctonia cerealis on wheat and Fusarium graminearum on maize were measured by growth rate method.For fungicides with high efficiency,Sun Johnson’s method was used to evaluate the synergistic effect of each ratio.The results showed that,hexaconazol and fludioxonil had the highest indoor toxicity to R.cerealis,with EC_(50) value of 0.094 mg/L and 0.312 mg/L,respectively.The indoor toxicity of prochloraz and hexaconazol to F.graminearum was the highest;with EC_(50) value of 0.088 mg/L and 0.593 mg/L,respectively.The combination of hexaconazol and fludioxonil in different ratios exhibited no obvious synergistic effect on R.cerealis.The combination of prochloraz and hexaconazol at the ratio of 1:5,1:2 and 1:1 showed obvious synergistic effect.Among which the 1:5 ratio had the co-toxicity coefficient of 212.2,and its synergistic effect was most significant,which could be considered for the prevention and control of the above diseases in production.

关 键 词：小麦纹枯病菌 玉米茎基腐病菌 己唑醇 咪鲜胺 室内毒力 菌丝生长 

分 类 号：S482.2[农业科学—农药学]