药剂浸苗及田间用药防治龙胆斑枯病的研究

Study on the Seedling Soak and Field Control for Control on Gentian Septoria Disease

目的筛选新的化学药剂防治龙胆斑枯病。方法在移栽前采用不同药剂对种苗进行处理以及发病后采用不同的化学药剂对龙胆斑枯病进行田间防治试验。通过病情调查,评价防治效果。结果田间防治试验以丙环唑1000倍液防治效果最佳;种苗处理以施佳乐800倍液浸种苗4 h后移栽,防治效果最佳。结论通过种苗处理和发病后的化学防治,对龙胆斑枯病具有较好的防治作用。

Objective To screen new germicide to control Gentian Septoria disease.Methods The seedling was soaked by different germicides before transplanting,and field experiments were did on Gentian Septoria disease by different kinds of germicides right after the occurrence of the disease.Effect was evaluated by surveys about condition of the disease.Results The best method of prevention and control in field is Propiconazole（1：1000）;transplanting after the seedling had been soaked about 1 hours by pyrimethanil（1：600） had the best effect in the fi eld.Conclusion Seedling treatment and chemical control after the occurrence of the disease in the fi eld had good effect upon Gentian Septoria disease.