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3 2019年4种杀菌剂不同浓度对荞麦茎溃疡病的田间防治效果
Table 3 Field control effectiveness of 4 fungicides with different concentrations against buckwheat stem canker by Rhizoctonia spp. in 2019
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 59.2±3.6b 24.0±2.8a 1281.0±15.6abc
接菌对照Inoculation control 75.6±4.1a 20.5±3.9a 976.5±42.5e
40%氟硅唑EC
Flusilazole 40% EC
225.000 mL 27.2±2.7e 64.02±3.59a 27.5±3.5a 1353.0±60.7a 38.56
150.000 mL 32.1±3.9cde 57.54±5.19abcd 26.6±2.4a 1194.0±37.2abcd 22.27
75.000 mL 39.4±3.0cd 47.88±3.97bcd 20.6±1.9a 1117.5±52.0cde 14.44
25 g/L咯菌腈FS
Fludioxonil 25 g/L FS
100.050 mL 30.0±3.9cde 60.32±5.10abc 26.9±2.1a 982.7±44.2e 0.41
90.000 mL 33.2±2.5de 56.08±3.28abcd 23.0±3.8a 1088.7±71.9de 7.48
81.000 mL 32.3±3.3cde 57.28±4.35abcd 24.4±1.4a 986.7±47.9e 0.68
250 g/L吡唑·醚菌酯EC
Pyraclostrobin 250 g/L EC
2250.000 mL 36.1±1.9cde 52.25±2.52abcd 23.6±2.8a 1302.0±65.9ab 33.33
1125.000 mL 39.6±3.7cd 47.62±4.89cd 24.6±1.9a 1149.0±56.2bc 17.67
750.000 mL 41.2±4.7c 45.50±6.26cd 27.7±2.7a 1128.0±59.7cde 15.51
40%福美·拌种灵WP
Thiram·Seedvax 40% WP
0.450 g 36.3±3.4cde 51.98±4.43abcd 23.2±3.7a 1033.5±56.3de 5.84
0.225 g 41.6±3.4c 44.97±4.43d 21.9±2.1a 1056.0±68.4de 8.14
0.150 g 28.0±3.8de 62.96±4.96ab 22.0±3.9a 1114.5±48.8cde 14.13