几种杀菌剂对荞麦茎溃疡病菌的生物活性和田间防治效果

郭婷, 刘雨薇, 吴进蓉, 班瑞娟, 岳文冉, 李哲, 王莉花, 张笑宇

Biological Activity and Field Control Effects of Several Fungicides against Buckwheat Stem Canker by Rhizoctonia spp.

Guo Ting, Liu Yuwei, Wu Jinrong, Ban Ruijuan, Yue Wenran, Li Zhe, Wang Lihua, Zhang Xiaoyu

表2 2018年14种杀菌剂对荞麦茎溃疡病的田间防治效果

Table 2 Field control effects of 14 fungicides against buckwheat stem canker by Rhizoctonia spp. in 2018

药剂 Fungicide 用药量 Dosage (/hm2) 病情指数 Disease index 防治效果 Control efficiency (%) 千粒重 1000-seed weight (g) 产量 Yield (kg/hm2) 增产 Increase production (%) 空白对照Blank control 57.8±2.0b 25.1±0.3b 912.0±38.1cd 接菌对照Inoculation control 79.4±1.5a 21.3±0.5c 550.5±14.7h 70%甲基硫菌灵WP Thiophanate-Methyl 70% WP 1800.000 g 52.1±2.6b 34.60±3.28c 25.3±0.4b 738.0±54.6efg 74.85 10%苯醚甲环唑WG Difenoconazole 10% WG 1500.000 g 54.8±4.5b 30.98±5.60c 31.1±0.7a 868.5±44.2de 126.95 15%三唑酮WP Triadimefon 15% WP 1200.000 g 53.0±2.8b 33.25±3.56c 26.7±0.4b 690.0±46.8fgh 55.69 50%异菌脲SC Iprodione 50% SC 1500.000 mL 54.6±4.1b 31.23±5.16c 26.1±0.4b 670.5±31.2fgh 47.90 50%啶酰菌胺WG Boscalid 50% WG 750.000 g 51.5±1.7b 35.14±2.18c 23.2±0.3b 732.0±32.0efg 72.46 80%代森锰锌WP Mancozeb 80% WP 3750.000 g 56.7±2.5b 28.59±3.20c 24.8±0.3b 627.5±50.2gh 30.72 250 g/L嘧菌酯SC Azoxystrobin 250 g/L EC 2250.000 mL 31.8±2.5cde 59.95±3.20ab 24.8±0.4b 1038.0±48.5bc 194.61 40%氟硅唑EC Flusilazole 40% EC 187.500 mL 22.9±4.4e 71.16±5.53a 26.2±0.4b 1228.5±57.2a 270.66 250 g/L吡唑·醚菌酯EC Pyraclostrobin 250 g/L EC 750.000 mL 28.2±4.5de 64.48±5.60ab 26.2±0.2b 1083.0±42.4b 212.57 42.4%唑醚·氟酰胺SC Flutolanil 42.4% SC 450.000 mL 38.1±3.8c 52.02±4.80b 31.2±0.4a 772.5±58.0def 88.62 50%氟啶胺SC Fluazinam 50% SC 450.000 mL 37.0±2.5cd 53.40±3.20b 25.5±0.1b 883.5±55.4d 132.93 25 g/L咯菌腈FS Fludioxonil 25 g/L FS 105.000 mL 49.0±1.9b 38.29±2.40c 25.4±0.5b 796.5±37.2def 98.20 70%恶霉灵WP Hymexazol 70% WP 0.750 g 57.7±3.3b 27.33±4.15c 26.2±0.3b 684.0±38.1fgh 53.29 40%福美·拌种灵WP Thiram·Seedvax 40% WP 2.850 g 29.3±1.4cde 63.10±1.82ab 23.5±0.5b 915.0±30.3cd 145.51