苹果树腐烂病防治药剂筛选试验

Investigation on the Effects of Integrated Control and Disease Healing of Apple Trees

本试验以8年生"天汪一号"苹果树为试材,在腐烂病易发期采用不同杀菌剂处理涂抹主干、主枝、中心干,探讨不同杀菌剂对病斑复发和新病斑发生的影响。结果表明,各处理对抑制腐烂病的发生均有效,在防止新病斑的产生方面,以8%的氟硅唑500倍液最为有效;在病斑刮治后防止复发方面,以3%的戊唑醇400倍液效果最为明显;5年后,从对病斑刮除后愈合效果的调查结果上看,以3%戊唑醇500倍液,涂抹过的树愈合效果最好,纵径愈合率为44.18%,横径愈合率为76.37%,这些效果都是建立在加强果园综合管理基础上的。

The effects of different fungicides on the recurrence and new lesion of different fungi were studied by applying different fungicides to the main stem, main branch and center dryness in the 8-year-old ＂Tianwang No.1＂ apple trees in the rot disease prone period. The results showed that each treatment was effective in inhibiting the occurrence of rot disease, and it was the most effective in preventing the occurrence of new lesion with 8% fluoxidazole 500 times. After prevention of recurrence, Tebuconazole 400 times had the most obvious effect; 5 years later, according to the investigation results of healing effect after removing lesion, 3% tebuconazole 500 times has the most effective, with longitudinal healing rate 44.18% and transverse healing rate 76.37%, and these effects were all based on strengthening the integrated management of orchards.