藜麦灰霉病防治药剂的筛选、复配及其防效 Click here to download the full text Citation：徐紫璐,马馨蕊,赵雨,秦楠,殷辉,赵晓军,任璐.藜麦灰霉病防治药剂的筛选、复配及其防效.Journal of Plant Protection,2026,53(2):419-429 Hits: Download times: Author Name Affiliation E-mail Xu Zilu  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Ma Xinrui  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Zhao Yu  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Qin Nan  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China Shanxi Key Laboratory of Integrated Pest Management in Agricultur Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Yin Hui  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China Shanxi Key Laboratory of Integrated Pest Management in Agricultur Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Zhao Xiaojun  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China Shanxi Key Laboratory of Integrated Pest Management in Agricultur Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China  zhaoxiaojun0218@163.com  Ren Lu  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China Shanxi Key Laboratory of Integrated Pest Management in Agricultur Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China  renlubaby@163.com  中文摘要:为明确有效防治藜麦灰霉病的药剂，测定12种杀菌剂对藜麦灰霉病菌灰葡萄孢菌Botrytis cinerea的抑制效果和室内毒力，筛选出两种作用位点不同的杀菌剂进行复配，明确复配药剂的最佳体积比和配方，并通过离体叶片试验、室内盆栽试验和大田试验综合测定复配药剂对藜麦灰霉病的防效。结果显示：氟唑菌酰羟胺、嘧菌酯、戊唑醇和吡唑醚菌酯对灰葡萄孢菌的室内毒力均较好，抑制中浓度EC50分别为0.49、0.39、0.09和0.03μg/mL；选择氟唑菌酰羟胺与戊唑醇进行复配，当氟唑菌酰羟胺与戊唑醇按照4∶6和5∶5体积比复配时，毒性比率分别为1.49和1.37，表现增效作用；当氟唑菌酰羟胺与戊唑醇按照9∶2质量比复配时，增效作用最大，增效系数达2.85；高、中浓度的复配药剂处理后，离体叶片试验的保护防效和治疗防效为94.97%～97.18%，室内盆栽试验的保护防效和治疗防效为71.45%～82.01%，田间防效分别为87.77%和79.91%，均高于其他处理；且高、中浓度的复配药剂处理能显著提高藜麦产量。表明当200 g/L氟唑菌酰羟胺悬浮剂与430 g/L戊唑醇悬浮剂有效成分按质量比9∶2（200μg/mL氟唑菌酰羟胺+44.4μg/mL戊唑醇和160μg/mL氟唑菌酰羟胺+35.6μg/mL戊唑醇）复配不仅可有效防治藜麦灰霉病，而且能显著增加藜麦产量。 中文关键词:灰葡萄孢菌  氟唑菌酰羟胺  戊唑醇  复配  防效  配方  田间试验   Screening, compounding of fungicides and their control effect against gray mold of Chenopodium quinoa Author Name Affiliation E-mail Xu Zilu  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Ma Xinrui  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Zhao Yu  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Qin Nan  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China Shanxi Key Laboratory of Integrated Pest Management in Agricultur Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Yin Hui  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China Shanxi Key Laboratory of Integrated Pest Management in Agricultur Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China    Zhao Xiaojun  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China Shanxi Key Laboratory of Integrated Pest Management in Agricultur Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China  zhaoxiaojun0218@163.com  Ren Lu  College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China Shanxi Key Laboratory of Integrated Pest Management in Agricultur Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China  renlubaby@163.com  Abstract:To identify effective fungicides for the control of gray mold in quinoa Chenopodium quinoa, the inhibitory effects and in vitro toxicity of 12 fungicides against pathogen Botrytis cinerea were determined. Two fungicides with different modes of action were selected for combination, and the optimal volume ratio and formulation of the combined fungicides were determined. The efficacy of the combined fungicides against gray mold in quinoa was comprehensively evaluated through in vitro leaf tests, in vitro pot experiments and field trials. The results showed that pydiflumetofen, azoxystrobin, tebuconazole and pyraclostrobin had significant in vitro toxicity against B. cinerea, with EC50 values of 0.49, 0.39, 0.09 and 0.03 μg/mL, respectively. When the volume ratio of pydiflumetofen to tebuconazole was 4∶6 and 5∶5, it showed a synergistic effect, with toxicity ratios of 1.49 and 1.37, respectively. When the mass ratio of pydiflumetofen and tebuconazole was 9∶2, the synergistic effect was optimal, and the synergistic coefficient was 2.85. After treatment with high and medium concentrations of the combined fungicides, the protective and treatment effect on in vitro leaves were 94.97%-97.18%, and the protective and treatment effect of indoor pot experiments were 71.45%-82.01%. The field control effects of the high and medium concentrations of the compound fungicides were 87.77% and 79.91%, respectively, which were higher than other treatments, and could significantly increase the yield of quinoa. It was indicated that the field recommended concentration of 200 g/L pydiflumetofen suspension concentrate（SC） and 430 g/L tebuconazole SC at a mass ratio of 9∶2（200 μg/mL pydiflumetofen + 44.4 μg/mL tebuconazole and 160 μg/mL pydiflumetofen + 35.6 μg/mL tebuconazole） could not only effectively control gray mold in quinoa, but also significantly increase quinoa yield. keywords:Botrytis cinerea  pydiflumetofen  tebuconazole  mixture  efficacy  recipe  field experiment View Full Text  View/Add Comment  Download reader

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