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  

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

作　　者：郭婷[1,2] 刘雨薇 吴进蓉 班瑞娟 岳文冉 李哲 王莉花 张笑宇[1] Guo Ting;Liu Yuwei;Wu Jinrong;Ban Ruijuan;Yue Wenran;Li Zhe;Wang Lihua;Zhang Xiaoyu(College of Horticulture and Plant Protection,Inner Mongolia Agricultural University,Hohhot 010020,Inner Mongolia,China;Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010000,Inner Mongolia,China;Agriculture and Animal Husbandry Bureau of Damao Banner,Baotou 014599,Inner Mongolia,China;College of Life Science and Food Science,Inner Mongolia University for Nationalities,Tongliao 028000,Inner Mongolia,China;Tongliao Agricultural Technology Extension Center,Tongliao 028000,Inner Mongolia,China;Institute of Biotechnology and Germplasm Resources,Yunnan Academy of Agricultural Sciences,Kunming 650205,Yunnan,China)

机构地区：[1]内蒙古农业大学园艺与植物保护学院,内蒙古呼和浩特010020 [2]内蒙古农牧业科学院,内蒙古呼和浩特010000 [3]包头市达茂旗农牧局,内蒙古包头014599 [4]内蒙古民族大学生命科学与食品学院,028000,内蒙古通辽 [5]通辽市农业技术推广中心,内蒙古通辽028000 [6]云南省农业科学院生物技术与种质资源研究所,云南昆明650205

出　　处：《作物杂志》2024年第5期247-254,共8页Crops

基　　金：财政部和农业农村部:国家现代农业(燕麦荞麦)产业技术体系(CARS-07-C-2);云南省重大科技专项与重点研发计划(202202AE090020)。

摘　　要：荞麦茎溃疡病是影响荞麦产量和品质的重要因素,选用常用真菌杀菌剂,测定其对荞麦茎溃疡病菌生物活性并进行田间防治效果试验。生物活性测定结果显示,40%氟硅唑EC、25g/L咯菌腈FS、15%三唑酮WP、40%福美·拌种灵WP抑制作用较好,其中40%氟硅唑EC 500μg/m L抑制率最高,为89.7%,有效浓度EC_(50)为1.56μg/L。田间防治效果试验中,250 g/L嘧菌酯SC 675~855 m L/hm^(2)、40%氟硅唑EC 150~375 m L/hm^(2)、250 g/L吡唑·醚菌酯EC 570 m L/hm^(2)、40%福美·拌种灵WP 0.15~2.85 g/hm^(2)和50%氟啶胺SC 375~480 m L/hm^(2)防治效果较好,产量和净利润明显提升。生产中,荞麦茎溃疡病可以使用嘧菌酯、氟硅唑、吡唑·醚菌酯、福美·拌种灵和氟啶胺沟施防治。Buckwheat stem canker is an important disease affecting yield and quality of buckwheat.The biological activity of Rhizoctonia spp.against stem canker of buckwheat was determined by using common fungicides.Biological activity assay results showed that flusilazole 40%EC,fludioxonil 25 g/L FS,triadimefon 15%WP and Thiram·Seedvax 40%WP had obvious inhibitory effects,and the inhibitory rate of flusilazole 40%EC at 500μg/mL was 89.7%,and EC50 was 1.56μg/L.In field control tests,azoxystrobin 250 g/L SC at dosage 675-855 mL/ha,flusilazole 40%EC at dosage 150-375 mL/ha,pyraclostrobin 250 g/L EC at dosage 570 mL/ha,Thiram·Seedvax 40%WP at dosage 0.15-2.85 g/ha and fluazinam 50%SC at dosage 375-480 mL/ha had better control effects,increased production and net profit obviously.Azoxystrobin,Thiram·Seedvax,pyraclostrobin,flusilazole and fluazinam can be used to control the buckwheat stem canker disease during production by passing them down ditches.

关 键 词：荞麦 荞麦茎溃疡病 丝核菌 生物活性 化学防治 

分 类 号：S435.17[农业科学—农业昆虫与害虫防治]