几种杀菌剂防治甜菜褐斑病效果分析

目的]筛选出防治甜菜褐斑病(Cercoapora belicola Sacc.)效果较好的杀菌剂为该病的有效防治提供理论依据.方法]选择5种杀菌剂,进行防治甜菜褐斑病的田间小区试验.结果]筛选出防治效果较好的杀菌剂是福星5000倍液和氟硅唑·多菌灵(12.5;·27.5;)悬浮剂,防效分别为60.80;和58.37;.与其他杀菌剂有显著性差异.5种杀菌剂防治时应连续喷药,间隔期7d,连续施药2次.I结论]5种杀菌剂均对甜菜褐斑病有一定的防治效果,防效最高的杀菌剂是福星、氟硅唑·多菌灵,可在生产上推广应用.

Effect of Several Fungicides on Controlling Leaf Spot of Sugar Beet

【Objective】The aim of this study was to screen better fungicides for controlling sugar beet leaf spot.【Method】Selecting several fungicides to carry out experiment of controlling sugar beet leaf spot in the field.【Result】Fuxing 5000 times and Flusilazole·Carbendazim(12.5%·27.5%)are better fungicides,their controlling efficiency exceeded 60.80% and 58.37%.They have significant differences from other fungicides.All fungicides slowly give their pesticide effects,the fungicides should be continually applied every 7 days by twice spraying,the control effect will be increased.【Conclusion】Several fungicides have a preventive effect on the beet leaf spot,antiefficient pharmaceuticals:fuxing and Flusilazole·Carbendazim(12.5%·27.5%) have the highest control effects.They could be applied in production.