杂交中籼稻药剂防倒伏技术的初步研究  

Preliminary Study on Lodging-resistance Technique with Medicament in Medium Indica Hybrid Rice

作　　者：孔令娟[1,2] 黄义德[2] 胡鹏[3] 冯骏[4] 孙如银[5] 荚恒斌[3] 

机构地区：[1]安徽省农业技术推广总站,安徽合肥230001 [2]安徽农业大学,安徽合肥230001 [3]安徽省巢湖市居巢区农业技术推广中心,安徽巢湖238000 [4]安徽省桐城市种植业管理局,安徽桐城231400 [5]安徽省天长市农业科技推广中心,安徽天长239300

出　　处：《安徽农业科学》2009年第24期11587-11589,共3页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑计划(2006BAD02A06);安徽省科技攻关项目(08010302160)

摘　　要：[目的]探讨杂交中籼稻喷施植物生长延缓剂立丰灵的应用方法和效果。[方法]多点试验中,以丰两优3号、新两优6号和扬两优6号为试材,5%立丰灵粉剂的用药剂量设3个处理:300、600和900 g/hm2,在水稻拔节前10 d进行喷施,同时以15%多效唑150g/hm2制剂为对照用药,清水处理为空白对照,研究杂交中籼稻的药剂防倒伏技术。[结果]施用5%立丰灵使植株明显矮化,药效长达25～30 d,且随着剂量的加大,矮化作用越显著,显著降低倒伏指数。喷施300和600 g/hm2剂量的立丰灵可有效促进幼穗发育,使出穗提前2～4 d,增加每穗粒数,增产3.0%～8.5%,但达到900 g/hm2的剂量,则表现减产。[结论]在同等条件下,施用5%立丰灵600g/hm2的处理,既有显著矮化抗倒效应,又能促进穗粒发育,增产效果显著。[ Objective ] The study aimed to discuss the method and effect of spraying the plant growth retardant Lifengling on medium indica hybrid rice. [ Method] In the muti-site test, with Fengliangyou 3, Xinliangyou 6 and Yangliangyou 6 as the tested materials, 3 dosage treatments of 5% Lifengling powder were set up as 300, 600 and 900 g/hm^2 to spray on the medium indiea hybrid rice in 10 d before the rice jointing. 15% Paelobutrazol at 150 g/hm^2 was used as the CK medicament and the clear water was used as the blank CK, and the lodging-resistance technique with medicament in medium indiea hybrid rice was studied. [ Result] Spraying 5% Lifengling could make the plant to be dwarfed obviously with the medicament effect being as long as 25 -30 d, and with its dosage increasing, its dwarfing effect was more obvious and then the lodge index was reduced significantly. Spraying 5% Lifengling at 300 and 600 g/hm^2 could effectively improve the development of young spike, make its spiking to be advanced by 2 - 4 d, increase the grains per spike and increase the yield by 3.0% -8.5% , but spraying 5% Lifengling at 900/hm^2 could decreased the yield. [ Conclusion] Under same condition, applying 5% Lifengling at 600/hm^2 could not only had effects of dwarfing and lodging-resistance but also could improve the development of grain per spike, which showed a obvious yield-increasing effect.

关 键 词：水稻 植物生长延缓剂 抗倒伏 

分 类 号：S481.9[农业科学—农药学]