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中国农学通报 ›› 2024, Vol. 40 ›› Issue (2): 114-120.doi: 10.11924/j.issn.1000-6850.casb2023-0559

• 植物保护 • 上一篇    下一篇

丙硫菌唑与丙环唑混剂对小麦赤霉病菌的联合毒力及田间防效

陈宏州1(), 王兵兵2, 王陈斌2, 张新建3, 杨红福1, 徐超1, 张建华1, 朱凤4()   

  1. 1 江苏丘陵地区镇江农业科学研究所,江苏句容 212400
    2 镇江润良粮食专业合作社,江苏丹徒 212100
    3 扬州市苏灵农药化工有限公司,江苏扬州 225231
    4 江苏省植物保护植物检疫站,南京 210036
  • 收稿日期:2023-08-15 修回日期:2023-11-05 出版日期:2024-01-10 发布日期:2024-01-10
  • 通讯作者:
    朱凤,女,1979年出生,江苏宝应人,推广研究员,硕士,主要从事植保和农药应用研究。通信地址:210036 江苏省南京市鼓楼区凤凰西街277号 江苏省植物保护植物检疫站,Tel:025-86263340,E-mail:
  • 作者简介:

    陈宏州,男,1984年出生,广西宜州人,副研究员,硕士,主要从事农作物病害抗药性监测与治理研究。通信地址:212400 江苏省句容市弘景路1号 江苏丘陵地区镇江农业科学研究所,Tel:0511-80978079,E-mail:

  • 基金资助:
    江苏省农业重大技术协同推广计划“小麦全产业链绿色防控技术协同推广计划”(2022-ZYXT-02-2); 2023年江苏省级农业公共服务专项“小麦赤霉病防治抗药性监测与风险评估”(2023-SJ-62); 镇江市“1+1+N”新型农业技术推广项目“小麦病虫草害减药增效防控技术集成与推广”(ZJNJ[2021]05); 镇江市重点研发计划“小麦DON毒素控制关键技术研发与应用”(SH2020008)

Co-toxicity and Field Control Efficacy of Mixtures of Prothioconazole and Propiconazole to Fusarium Head Blight Caused by Gibberella zeae (Schw.) Petch

CHEN Hongzhou1(), WANG Bingbing2, WANG Chenbin2, ZHANG Xinjian3, YANG Hongfu1, XU Chao1, ZHANG Jianhua1, ZHU Feng4()   

  1. 1 Zhenjiang Institute of Agricultural Sciences in Hilly Area of Jiangsu Province, Jurong, Jiangsu 212400
    2 Zhenjiang Runliang Grain Professional Cooperative, Dantu, Jiangsu 212100
    3 Yangzhou Suling Pesticide Chemical Co., Ltd, Yangzhou, Jiangsu 225231
    4 Plant Protection and Quarantine Station of Jiangsu Province, Nanjing 210036
  • Received:2023-08-15 Revised:2023-11-05 Published-:2024-01-10 Online:2024-01-10

摘要:

为研发防治小麦赤霉病的新药剂,采用菌丝生长速率法分别检测了丙硫菌唑、丙环唑及其7种配比混剂对赤霉病菌的室内毒力,并进行了优选配比制剂对赤霉病、籽粒DON毒素、白粉病和叶锈病的田间药效试验。结果表明,丙硫菌唑与丙环唑配比为1:1时增效系数为2.4375,增效最显著。田间药效试验中,40%丙硫菌唑∙丙环唑可分散油悬浮剂(OD)600 g/hm2对赤霉病病指防效和籽粒DON防效分别为93.46%和91.26%,2次药后21 d对白粉病和叶锈病病指防效分别为93.50%和93.19%,均高于常规药剂戊唑醇和多菌灵,并且对小麦生长安全。40%丙硫菌唑∙丙环唑OD对赤霉病和籽粒DON毒素防效优良,同时对白粉病和叶锈病兼治效果优良,具有较好的开发潜力。

关键词: 小麦赤霉病, 脱氧雪腐镰刀菌烯醇, 丙硫菌唑, 丙环唑, 联合毒力, 防治效果

Abstract:

In order to explore a new reagent for controlling fusarium head blight (FHB), the indoor toxicity of prothioconazole, propiconazole and their seven mixtures on Gibberella zeae (Schw.) Petch had been detected by using mycelium growth rate method. Meanwhile, the field control tests of the optimum formulation on FHB, DON in wheat grain, wheat powdery mildew (WPM) and wheat leaf rust (WLR) had been conducted, respectively. The results of indoor toxicity tests showed that the synergistic coefficient was 2.4375 when the mixture of prothioconazole and propiconazole at the ratio of 1:1, and the synergistic effect was the most significant. The results of the field control efficacy showed that the FHB disease index (DI) and DON control efficacy of 40% prothioconazole·propiconazole oil dispersion (OD) 600 g/hm2 were 93.46% and 91.26%, respectively, while the control efficacy against WPM DI and WLR DI on the 21th day after 2 times of spraying were 93.50% and 93.19%, respectively, both of which were higher than the control efficacy of the common fungicide tebuconazole or carbendazim, and it was safe for wheat growth. 40% prothioconazole·propiconazole OD provided excellent control efficacy on FHB and DON in wheat grain, as well as excellent simultaneous control efficacy on WPM and WLR, which had good development potential.

Key words: fusarium head blight, deoxynivalenol, prothioconazole, propiconazole, co-toxicity, control efficacy