| 刘怀珍，李康活，黄庆，陆秀明，张彬，李惠芬，邹积祥，周少川.一季中晚稻稻曲病化学防治研究[J].广东农业科学,2014,41(14):76-79 |
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一季中晚稻稻曲病化学防治研究 |
| Studying on chemical control technology of ricefalse smut (Ustilaginoidea virens) in singlecropping middle-late rice |
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| DOI： |
| 中文关键词: 一季中晚稻 稻曲病 化学防治 |
| 英文关键词: single cropping middle-late rice Ustilaginoidea virens chemical control |
| 基金项目:国家科技支撑计划项目（2007BAD89B14）；农业部公益性行业（农业）科研专项（00803028，201103001）；农业部农业结构调整重大技术研究专项（06-03-07B）曰广东省财政厅项目（粤财预[2005]11号，粤财教[2006]187号）；广东省科技厅
农业攻关项目（2005B20101001） |
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| 中文摘要: |
| 针对“123种植模式”中一季中晚稻的生育时段主要在5~9月，抽穗扬花期常遇中温、高湿尤其雨天较多，稻曲病发生较严重。2013年以黄华占和金农丝苗为试验材料，在广州市花都区会兴菜场以药剂“三唑酮、爱苗尧井冈霉素”为主处理、以喷施时期“破口前7 d、破口前7d+破口期、破口期”为副处理进行一季中晚稻稻曲病的药效试验和防治适期的研究。结果表明：3种药剂三唑酮尧爱苗尧井冈霉素对稻曲病病穗率和病情指数均具有极显著降低袁但3种药剂间差异不显著袁其中爱苗的防治效果较好曰喷施时期对稻曲病病穗率和病情指数的影响没达显著水平袁但破口前7 d+破口期喷施的防治效果较好曰3 种药剂三唑酮尧爱苗尧井冈霉素处理后增产显著袁其中爱苗的增幅较大袁增产的主要原因是结实率显著提高从而显著增多每穗实粒数曰喷施时期对产量虽有影响袁但差异不显著遥 |
| 英文摘要: |
| The paper was to study optimum chemical agents and control periods against rice false smut (Ustilaginoidea virens) in single cropping middle-late rice. Taking chemical agents (triadimefon, armure,jinggangmycin) as main treatments and spraying periods (within 7 d before initial heading stage, within 7 d before initial heading stage + initial heading stage, initial heading stage) as assisted treatments, the field efficacy trial and optimum control period of U. virens in single cropping middle-late rice were studied using Huanghuazhan and Jinnongsimiao as experimental materials in 2013. Three
chemical agents, triadimefon, armure, jinggangmycin, extremely reduced diseased panicle rate and disease index of U. virens, but there was no significant difference among three chemical agents. Spraying period did not have significant impact on diseased panicle rate and disease index of U. virens, whereas spraying within 7 d before initial heading stage and during initial heading stage had relatively good control effect. Yield increased significantly after application of three chemical agents, and armure led to greater increase. The reason for yield increase was that seed setting rate significantly increased, and the number of filled grains per panicle significantly increased. Although spraying period influenced yield, the difference was not significant. |
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