超级稻Ⅱ优602密度与穗肥运筹对产量和功能叶N素的影响  

Effects of Density and Panicle Fertilizer Management on Grain Yield and N in Function Leaves of Super Rice Cultivar Ⅱ You 602

作　　者：姜心禄[1,2] 李涛 池忠志[1,2] 郑家国[1,2] 

机构地区：[1]四川省农业科学院作物研究所,四川成都610066 [2]德阳市水稻专家大院,四川德阳618300 [3]宣汉县农业局,四川宣汉636150

出　　处：《西南农业学报》2009年第6期1643-1648,共6页Southwest China Journal of Agricultural Sciences

基　　金："十一五"国家科技支撑计划重大项目(2004BA520A05);农业部重大研究专项(超级稻配套栽培技术开发与集成);德阳市重点科技攻关项目(2007ND028)

摘　　要：试验以超级稻Ⅱ优602为材料,研究了密度与穗肥运筹对水稻产量和功能叶N素含量的影响。结果表明:不同时期施用穗肥,对功能叶叶片、叶鞘、茎秆的全N含量有明显的影响;对功能叶叶长和倒3节节间长也有明显影响;在移栽密度为15穴/m2时,穗肥的最佳施用时期为倒3叶期;当移栽密度为20穴/m2时,穗肥的最佳施用时期为倒2叶期。Using super hybrid rice cultivar Ⅱ you 602 as the material, the effects of density and panicle fertilizer management on grain yield and N in function leaves were studied. The treatments were 2 densities （ 15 and 20 hills per m2 ） and 4 N application stages （ at the stage of the 1st leaf, the 2nd leaf, the 3rd leaf, the 4th leaf, from top leaf count down, same as below, the same amount N applied separately）. The results showed that the panicle fertilizer application stage would influence the total N contents of function leaves, leaf sheaths and stems, and the length of functional leaves and the 3rd internode. Under the density of 15 hills/m2 , the optimum stage of panicle fertilizer application was at the 3rd leaf stage, and under the density of 20 hills/m2, the optimum stage was the 2nd leaf stage.

关 键 词：超级稻 密度 穗肥运筹 全N含量稻谷产量 

分 类 号：S511.048[农业科学—作物学]