毛壳核腔菌[Pyrenophora chaetomioides(synonym:Drechslera avenae)]是一种广泛分布于世界各燕麦产区的病原真菌，可为害燕麦的叶片和小穗，降低燕麦产量和饲草品质。采用含药平板法测定了8种杀菌剂(15%三唑酮可湿性粉剂、75%百菌清可湿性粉剂、50%多菌灵可湿性粉剂、70%代森锰锌可湿性粉剂、50%速克灵可湿性粉剂、10%苯醚甲环唑水分散粒剂、430 g/L戊唑醇悬浮剂和400 g/L氟硅唑乳油)对毛壳核腔菌(菌株ASA-11 和 ASA-13)的抑菌效果。结果表明，在试验浓度下，8种供试杀菌剂对毛壳核腔菌菌丝生长均具有不同程度的抑制效果，其中70%代森锰锌可湿性粉剂500倍液，10%苯醚甲环唑水分散粒剂1 000倍液、5 000倍液和400 g/L氟硅唑乳油5 000倍液、10 000倍液的抑菌效果最好，均达100%；50%多菌灵可湿性粉剂500倍液的抑菌效果最差，仅为40.77%。

Pyrenophora chaetomioides(synonym: Drechslera avenae) is a cosmopolitan pathogen of Avena spp.， and infects leaves and spikelets， reducing grain yield and forage quality. Fungicide sensitivity of P. chaetomioides isolates(ASA-11 and ASA-13) was assessed by amendment plate method: autoclaved PDA media were amended prior to pouring with 8 different fungicides(triadimefon 15% WP， chlorothalonil 75% WP， carbendazim 50% WP， mancozeb 70% WP， procymidone 50% WP， difenoconazole 10% WDG， tebuconazole 430 g/L SC and flusilazole 400 g/L EC). The results showed that under test concentrations， all eight fungicides could inhibit the mycelial growth of P. chaetomioides， of which mancozeb 70% WP(500 times)， difenoconazole 10% WDG (1 000 times， 5 000 times) and flusilazole 400 g/L EC (5 000 times， 10 000 times)， inhibitory effects were up to 100%；carbendazim 50% WP (500 times) exhibited the worst inhibitory effect， only to 40.77%.

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农业农村部西北荒漠绿洲作物有害生物综合治理重点实验室开放基金(KFJJ202106)；甘肃省农业科学院农业科技创新专项(2021GAAS21)。