腈苯唑与氟啶胺混剂防治草莓白粉病和灰霉病

The Mixture of Fenbuconazole and Fluazinam against Strawberry Powdery Mildew and Strawberry Gray Mould

[目的]明确腈苯唑与氟啶胺混剂对草莓白粉病和灰霉病的防治作用。[方法]联合毒力试验、田间药效试验。[结果]联合毒力试验结果表明,腈苯唑与氟啶胺混配,在比例为1∶1~1∶5时,对草莓白粉病表现出增效作用;田间试验,混剂(腈苯唑∶氟啶胺=1∶3)在33.75~101.25 g a.i./hm^2剂量下,对草莓白粉病具有良好的防治效果,并且对草莓灰霉病具有很好的兼治作用。[结论]在一些草莓白粉病和灰霉病同时发生的田块,该混剂在33.75~67.5 g a.i./hm^2时,对控制其危害具有十分积极的作用,并且减少农药的施用量。

[Aims] This study aims to confirm the efficacy of the mixtures of fenbuconazole and fluazinam against strawberry powdery mildew and gray mould. [Methods] Synergistic action test and field trial wereconducted. [Results] The results indicated that the synergistic effect was afforded by using the mixture of fenbuconazole and fluazinam against strawberry powdery mildew in the range of 1：1 to 1：5 in synergistic action test. In field, the mixture of fenbuconazole and fluazinam （the ratio = 1：3） showed good control against strawberry powdery mildew at the dose of 33.75-101.25 g a.i./ha and an excellent effect on strawberry gray mold as well. [Conclusions] The mixture of fenbuconazole and fluazinam played a very positive role to control the damage of strawberry powdery mildew and gray mould at the dose of 33.75-67.5 g a.i./ha in some fields where these diseases occur at the same time. This technology can reduce the amount of pesticide application.