几种杀菌剂及混剂对葡萄褐斑病的生物活性测定

Biological Activity of Several Fungicides and Mixtures against Grape Leaf Spot

葡萄褐斑病是葡萄生产中的重要病害,其化学防治具有一定难度。测定了市场上用于防治该病害的10种主要杀菌剂的室内杀菌活性,活性较好的杀菌剂有40%氟硅唑EC、50%咪鲜胺WP、10%苯醚甲环唑WG。通过混剂筛选试验,10%苯醚甲环唑WG∶50%多菌灵WP(质量比4∶1、2∶1、1∶1)、40%氟硅唑EC∶70%代森锰锌WP(质量比4∶1、2∶1)、50%咪鲜胺WP∶70%甲基硫菌灵WP(质量比4∶1、2∶1、1∶1)是较好的杀菌剂组合,对葡萄褐斑病防效较好。

Grape leaf spot is an important disease and there is a certain degree of difficulty in chemical control Efficacies of ten fungicides against the causal agent of grape brown spot were compared in laboratory. Flusilazole 40% EC prochloraz 50% WP, difenoconazole 10% WG were highly effective against grape brown spot. By mixture screening difenoconazole 10% WG：carbendazim 50% WP（4：1, 2：1, 1：1）, flusilazole 40% EC：mancozeb 70% WP（4：1, 2：1） prochloraz 50% WP：thiophanate-methyl 70% WP（4：1, 2：1, 1：1） provided good control.