间甲氧基苯甲酸和噻唑膦复配对土传病原微生物的联合毒力评价  

Evaluation of co-toxicity on the mixtures of m-methoxybenzoic acid with fosthiazate against soil-borne pathogenic microorganisms

作　　者：刘静怡 王晴 方文生[1] 李园[1] 曹坳程[1] 王秋霞[1] 颜冬冬[1] LIU Jingyi;WANG Qing;FANG Wensheng;LI Yuan;CAO Aocheng;WANG Qiuxia;YAN Dongdong(Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing100193,China)

机构地区：[1]中国农业科学院植物保护研究所,北京100193

出　　处：《现代农药》2024年第4期64-69,共6页MODERN AGROCHEMICALS

基　　金：国家重点研发计划(2022YFC3501502、2023YFD1701205)。

摘　　要：为筛选出更适合作物土传病害防治的高效农药品种,在室内条件下分别测定了间甲氧基苯甲酸与噻唑膦单剂及其复配对青枯雷尔氏菌、尖孢镰刀菌和根结线虫的毒力,并采用Wadley法对复配药剂的联合毒力进行评价。结果表明,不同复配比混合物对土传病原物的活性有所差异。间甲氧基苯甲酸与噻唑膦体积比为1∶1时,对青枯雷尔氏菌和南方根结线虫的增效作用最强,增效系数SR分别为1.67和1.83;而该体积比下对尖孢镰刀菌的SR同样最高,为1.16,表现为相加作用。间甲氧基苯甲酸和噻唑膦按体积比1∶1复配可用于防治土传病原微生物引起的植物病害。In order to screen highly effective pesticide formulations for the control of soil-borne diseases of crops,the toxicities of m-methoxybenzoic acid,fosthiazate and their combinations on Ralstonia solanacearum,Fusarium oxysporum,and root-knot nematodes were determined under lab conditions.The results showed that the inhibitory activities of the mixtures of m-methoxybenzoic acid and fosthiazate on soil-borne diseases varied with the ratio changed.The mixture of m-methoxybenzoic acid and fosthiazate at the volume ratio of 1∶1 showed the highest synergistic effects on Ralstonia solanacearum and root-knot nematodes,with the SR of 1.67 and 1.83,respectively.The SR on Fusarium oxysporum was 1.16,showed the additive effect.The combination of m-methoxybenzoic acid and fosthiazate in a certain proportion could be used for the control of crop diseases caused by soil-borne pathogenic microorganisms.

关 键 词：土传病原物 噻唑膦 间甲氧基苯甲酸 农药复配 增效作用 

分 类 号：TQ450.211[化学工程—农药化工]