| 胡茂林1, 3, 黄晓冬2, 罗来鑫3, 李健强3*.苯醚甲环唑与烯肟菌胺复配防治稻曲病[J].植物保护,2018,44(3):230-234. |
| 苯醚甲环唑与烯肟菌胺复配防治稻曲病 |
| Control effect of difenoconazole, SYP-1620 and their mixture on rice false smut disease |
| 投稿时间：2017-08-25 修订日期：2017-10-29 |
| DOI：10.16688/j.zwbh.2017322 |
| 中文关键词: 稻曲病 苯醚甲环唑 烯肟菌胺 复配 |
| 英文关键词:Ustilaginoidea virens difenoconazole SYP-1620 complex formulation |
| 基金项目:国家公益性行业(农业)科研专项(200903039-6) |
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| 中文摘要: |
| 为筛选防治稻曲病的杀菌剂, 本文测定了苯醚甲环唑、烯肟菌胺单剂以及不同比例的混配制剂对稻曲病菌的毒力和联合毒力, 并选择具有增效作用的混配药剂进行了田间防效试验。结果表明:苯醚甲环唑和烯肟菌胺按9∶1混配对稻曲病菌的抑制作用最强, EC50为0.11 μg/mL, 共毒系数最大, 达182.91, 显示二者按该比例混配具有增效作用。选择该配比加工的复配制剂5%苯醚甲环唑·烯肟菌胺微乳剂进行田间药效试验, 结果表明, 喷雾量为有效剂量(下同)180 g/hm2时, 其病穗防效达79.89%, 病粒率防效达81.94%, 高于5%烯肟菌胺水剂75 g/hm2和对照药剂2.5%井冈霉素·100亿枯草芽孢杆菌水剂112.5 g·4.5×1013/hm2处理, 与25%苯醚甲环唑乳油和对照药剂300 g/L苯醚甲环唑·丙环唑乳油均无显著差异。分析认为, 5%苯醚甲环唑·烯肟菌胺ME可望作为稻曲病防治药剂进行示范和验证试验。 |
| 英文摘要: |
| In order to select effective fungicides for the control of Ustilaginoidea virens, toxicities of difenoconazole, SYP-1620 and their mixtures were tested in vitro.The mixture with synergistic effect was used in the field experiment.The results showed that the mixture of difenoconazole and SYP-1620 at the proportion of 9∶1 had the best inhibition against U. virens with the EC50 value of 0.11 μg/mL and co-toxicity coefficient of 182.91.The control efficacy of difenoconazole·SYP-1620 5% ME (9∶1) 180 g/hm2 was 79.89% calculated from diseased panicle rate and 81.94% calculated from diseased kernels, which was better than that of SYP-1620 5% AS 75 g/hm2 and jingangmycin·100 billion Bacillus subtilis 2.5% AS 112.5 g·4.5×1013 spore/hm2, but no significant difference with difenoconazole 25% EC and difenoconazole·propiconazole 300 g/L EC. Therefore, the mixed formulation of difenoconazole and SYP-1620 5% ME could be applied to control rice false smut disease. |
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