杂交稻准两优527以肥控蘖超高产栽培试验  

The Technique of Controlling Ineffective Tillering by Adjusting Application Method of Nitrogen Fertilizer for Super-high Yield of Zhunliangyou 527(Hybrid Rice Variety)

作　　者：杨桂兰 苏昌龙[2] 杨黎 王毅[2] 

机构地区：[1]黔东南州农业科学研究所,贵州凯里556000 [2]贵州省黄平县农业局农业技术推广站,贵州凯里556000

出　　处：《贵州农业科学》2007年第2期36-39,共4页Guizhou Agricultural Sciences

基　　金：贵州省"十一五"科技攻关项目"贵州省水稻;玉米;油菜超级品种配套栽培技术研究"[黔科合NZ字(2005)3003-01]

摘　　要：针对水稻超高产如何有效控制无效分蘖的难题,采取以肥(氮肥)控蘖代替排水晒田控蘖的措施,对杂交稻准两优527进行了试验。结果表明:在中上等肥力田重施底肥的基础上,12个处理中,处理5(667m2栽1.33万穴,穴栽2株带2蘖壮秧,施肥水平为:氮肥底肥占55%、分蘖肥占10%、穗肥占35%;钾肥底肥占40%、穗肥占60%)产量最高为823.3 kg/667m2。其次是处理3(穴栽3株带2蘖壮秧,施肥水平为:氮肥底肥占65%、穗肥占35%;钾肥底肥占40%、穗肥占60%),产量为805.7 kg/667m2。两者均可实现有效控蘖,产量达800 kg/667m2以上的超高产栽培水平。The experiment was conducted to investigate effects of different nitrogen application method and transplant density on super-high yield of Zhunliangyou 527 （hybrid rice variety）. The results show that the yields of 823.3 kg/667m^2 and 805.7 kg/667m^2 can be gained under the urea application amount with 15.68 kg/667m^2 of basic fertilizer, 2.85 kg/667m^2 of tiller fertilizer and 9.98 kg/667m^2of spike fertilizer and 13.3 thousand hole/667m^2 of density （ 2 plants with 2 strong tillers/ hole） and the urea application amount with 18. 5 kg/667m^2 of basic fertilizer and 9.98 kg/667m^2 of spike fertilizer and 13.3 thousand hole/667m^2 of density （ 3 plants with 2 strong tillers/hole） respectively, Over 800 kg/667m^2 of rice yield can be gained by the both application methods of nitrogen fertilizer and transnlant densities by controlling the ineffective tillering.

关 键 词：杂交稻 准两优527 超高产 控蘖 栽培试验 

分 类 号：S511.04[农业科学—作物学]