5种杀菌剂对小麦矮腥黑粉菌的室内毒力测定及盆栽防效  

Indoor toxicity determination and pot control effect evaluation of five fungicides against Tilletia controversa Kühn

作　　者：马骏豪 郭笑维 贾玉凤 刘琦 高利 MA Junhao;GUO Xiaowei;JIA Yufeng;LIU Qi;GAO Li(College of Agriculture,Xinjiang Agricultural University,Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture&Forestry of the North-Western Desert Oasis(Co-construction by Ministry and Province),Ministry of Agriculture and Rural Affairs,Urumqi 830052,China;Institute of Plant Protection,Xinjiang Uygur Autonomous Region Academy of Agricultural Sciences,Key Laboratory of Integrated Pest Management on Crops in Northwestern Oasis,Ministry of Agriculture and Rural Affairs,National Plant Protection Scientific Observation and Experiment Station of Korla,Xinjiang Key Laboratory of Agricultural Biosafety,Urumqi 830091,China;State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China)

机构地区：[1]新疆农业大学农学院,农业农村部西北荒漠绿洲农林外来入侵生物防控重点实验室(部省共建),乌鲁木齐830052 [2]新疆维吾尔自治区农业科学院植物保护研究所,农业农村部西北荒漠绿洲作物有害生物综合治理重点实验室,国家植物保护库尔勒观测实验站,新疆农业生物安全重点实验室,乌鲁木齐830091 [3]中国农业科学院植物保护研究所,植物病虫害综合治理全国重点实验室,北京100193

出　　处：《植物保护》2025年第2期363-368,共6页Plant Protection

基　　金：新疆维吾尔自治区重大科技专项(2023A02009);新疆维吾尔自治区第一批“2+5”重点人才计划;海关总署科研项目(2023HK001)。

摘　　要：小麦矮腥黑穗病是危害程度大、防治难度高的对外检疫性麦类黑穗病之一。为筛选出对其有效的杀菌剂,本研究通过琼脂平板孢子萌芽法测定了5种杀菌剂原药对小麦矮腥黑粉菌的毒力,再通过盆栽拌种试验评估了5种原药对应的商品制剂对小麦矮腥黑穗病的防治效果。结果表明,5种杀菌剂对小麦矮腥黑粉菌均有毒力,其中咯菌腈和苯醚甲环唑毒力最强,EC_(50)为0.4957μg/mL和0.6529μg/mL。在盆栽拌种试验中,5种药剂均有一定防效,其中25 g/L咯菌腈SC和30 g/L苯醚甲环唑SC防治效果均显著高于其余3种药剂,防治效果分别为87.00%和85.42%。本研究为小麦矮腥黑穗病的化学防控提供了理论依据。Wheat dwarf bunt is one of the most harmful and difficult-to-control wheat smut quarantine diseases.To screen effective fungicides,the toxicity of five fungicides to Tilletia controversa Kühn was determined by the agar plate spore germination method,and the control effects of their corresponding commercial formulations were evaluated via pot seed dressing tests.The results showed that all five fungicides exhibited toxicity to T.controversa,among which fludioxonil and difenoconazole had the strongest toxicity,with EC_(50) values of 0.4957μg/mL and 0.6529μg/mL,respectively.In the pot seed dressing experiment,all five fungicides demonstrated certain control effects.Among them,fludioxonil 25 g/L SC and difenoconazole 30 g/L SC exhibited significantly higher control effects compared to the other treatments,with efficacy rates of 87.00%and 85.42%,respectively.This study provides a theoretical basis for the chemical control of wheat dwarf bunt.

关 键 词：小麦矮腥黑粉菌 杀菌剂 毒力测定 防效评估 

分 类 号：S482.2[农业科学—农药学] S435.121.44[农业科学—植物保护]