水稻稻曲病的药效试验和防治适期的选定  

Test Pesticides Against Rice False Smut and Choose Optimum Application Period

作　　者：张舒[1] 张求东 罗汉刚 吕亮[1] 杨小林[1] 常向前[1] 肖志民[3] 武家涛[3] 陈其志[1] 

机构地区：[1]湖北省农业科学院植保土肥研究所,武汉430064 [2]湖北省植物保护总站 [3]武汉,430070

出　　处：《华中农业大学学报》2007年第2期178-181,共4页Journal of Huazhong Agricultural University

基　　金：国家攻关项目(2001BA509B02-06);湖北省科技攻关项目(2005AA201C71)资助

摘　　要：于水稻破口前3 d施用8种药剂防治稻曲病,结果表明,爱苗、万兴、好力克、井冈霉素、HB20-1、纹曲宁、三唑酮对稻曲病的防效分别达67.53%、62.15%、61.75%、57.52%、52.11%、48.35%和29.68%,其每公顷理论和实际增产幅度分别达1.71%-19.62%和3.85%-15.03%。于水稻孕穗期、破口前3 d、齐穗期、扬花期施用爱苗和井冈霉素防治稻曲病,结果表明,随着生育期推迟,对稻曲病的防治效果及产量均呈下降趋势,且以孕穗期施药防效最佳,增产最高。爱苗、井冈霉素孕穗期施药防效分别达到67.03%、58.54%,每公顷理论产量分别比不施药处理增产11.89%和10.68%,每公顷实际产量分别比不施药处理增产了11.31%和9.34%。Eight pesticides, namely Amure, Charisma, Tebuconazole, Jingangmycin, HB20-1, Wenquning,Triadimefon,were applied to control rice false smut （Ustilaginoidea virens） three days before the crack time. Experiment results indicated that the efficacy of the above pesticides was 67. 53%, 62.15%,61.75%,57. 52%,52.11%,48. 35% and 29.68% respectively. The increasing range of theoretical and actual yield per hectare were 1.71 %- 19. 62 % and 3.85 %- 15. 03 % respectively. Furthermore, Amure and Jingangmycin were applied to control rice false smut at different stages of rice growth such as booting,three days before crack time,full heading and flowering. The results showed that both the efficacy of the pesticides and the yield of rice decreased with the postponement of the application time. The aptimal application time is the booting stage of rice when both the efficaly and rice yield reacha top level. The efficacy of Amure and Jingangmycin applied at rice booting stages reached 67.03% and 58. 54% respectively. The theoretical yield per hectare was 11.89% and 10. 68% higher than that without using pesticide respectively. The actual yield per hectare was 11.31% and 9.34% higher than that without using pesticide.

关 键 词：稻曲病 药剂 防治 

分 类 号：S435.111.46[农业科学—农业昆虫与害虫防治]