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
40%氟硅唑EC Flusilazole 40% EC	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
25 g/L咯菌腈FS Fludioxonil 25 g/L FS	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
250 g/L吡唑·醚菌酯EC Pyraclostrobin 250 g/L EC	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
40%福美·拌种灵WP Thiram·Seedvax 40% WP	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