怀来产区酿酒葡萄西拉灰霉病菌防治技术研究与应用

Research and Application of Control Techniques for Botrytis Cinerea on Syrah Wine Grapes in the Huailai Region

摘要: 为明确怀来产区酿酒葡萄灰霉病关键防治时期与药剂种类，针对产区使用的常见药剂，进行抗药性检测。与此同时，对41.7%氟吡菌酰胺悬浮剂(SC)、50%咯菌腈悬浮剂(SC)、吡唑醚菌酯21.1%·氟唑菌酰胺21.2%悬浮剂(SC)等11种药剂进行花前与花期防治效果对比试验。结果表明，盛花期施药的防治效果明显优于花前施药的防治效果。其中，花期施药中，50%啶酰菌胺水分散颗粒(77.97%)、50%咯菌腈悬浮剂(74.89%)、25%咯菌腈·37%嘧菌环胺水分散颗粒(72.32%)、37%嘧菌环胺水分散颗粒(71.94%)，21.5%氟吡菌酰胺·21.5%肟菌酯悬浮剂(70.62%)等5种新型杀菌剂的防治效果较好，均在70%以上。因此上述5种药剂可作为花期防治酿酒葡萄灰霉病的候选药剂，研究结果对酿酒葡萄灰霉病的田间可持续防控具有重要的理论和实践意义。

Abstract: To clarify the critical prevention periods and types of fungicides for Botrytis cinerea in the Huailai grape-producing region, resistance testing was conducted on commonly used fungicides in the area. Meanwhile, comparative efficacy trials were performed between pre-bloom and bloom-stage applications for 11 fungicides, including 41.7% fluopyram Suspension Concentrate (SC), 50% mefenoxam Suspension Concentrate (SC), and 21.1% pyraclostrobin · 21.2% boscalid Suspension Concentrate (SC). Results showed that post-bloom applications significantly outperformed pre-bloom applications in disease control. Among bloom-stage treatments, five novel fungicides—50% difenoconazole water-dispersible granules (77.97%), 50% mefenoxam suspension concentrate (74.89%), 25% mefenoxam · 37% cyproconazole water-dispersible granules (72.32%), 37% cyproconazole water-dispersible granules (71.94%), and 21.5% fluopyram · 21.5% picoxystrobin suspension concentrate (70.62%)—demonstrated superior efficacy, all exceeding 70%. Thus, these five fungicides can serve as candidates for Botrytis cinerea control during the bloom stage. The findings hold significant theoretical and practical implications for sustainable field management of grapevine Botrytis cinerea.