不同氮、钾配比对杂交稻组合B优827衰老生理的影响  

Effect of different nitrogen and potassium on senescence of Byou827

作　　者：马坤[1] 胡运高[1] 杨国涛[1] 张玲[1] 

机构地区：[1]西南科技大学生命科学与工程学院,四川绵阳621010

出　　处：《广东农业科学》2013年第12期14-17,共4页Guangdong Agricultural Sciences

基　　金：国家科技重大专项(2011BAD35B02);四川省"十二五"育种攻关项目(12zs2107)

摘　　要：研究不同氮钾配比下杂交稻组合B优827剑叶不同时期光合色素和蛋白质含量变化,以揭示其对B优827叶片衰老生理的影响。结果表明:不同氮钾配比对B优827剑叶衰老过程中光合色素和蛋白质含量均会产生一定的影响。各处理下不同时期剑叶衰老生理与对照存在明显差异,其中以灌浆期尤为明显。高氮中钾(N180K135)水平下,剑叶在生育后期仍保持较高的光合色素含量和蛋白质水平,有利于延缓衰老,增加B优827的产量。This paper studied the effect of various ratio of nitrogen and potassium on change of photosynthetic pigment and soluble protein to reveal variation of senescence character. The result indicated that the different ratio of nitrogen and potassium could influence senescence characters of Byou827＇s flag leaf. The difference was obvious among different items and growth periods, especially in filling stage. In condition of N180K135, flag leaf still contained higher photosynthetic pigment and soluble protein. This can devote to delay senescence and increase production of Byou 827.

关 键 词：水稻 氮 钾 剑叶 衰老生理 

分 类 号：S511.01[农业科学—作物学]