氮硅配施对水稻叶片光合作用和氮代谢酶活性的影响  

Effects of application of nitrogen combined with silicon on the photosynthesis and activities of nitrogen metabolic enzyme of rice leaf

作　　者：王显[1,2] 张国良[2,3] 霍中洋[2] 肖跃成[1] 熊飞[2] 张洪程[2] 戴其根[2] 

机构地区：[1]江苏省姜堰市农业局,江苏姜堰225500 [2]扬州大学农学院,江苏扬州225009 [3]淮阴工学院生命科学与化学工程学院,江苏淮安223003

出　　处：《扬州大学学报（农业与生命科学版）》2010年第3期44-49,共6页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家科技支撑计划重大项目(2006BAD02A03);国家自然科学基金资助项目(30571090);江苏省自然科学基金资助项目(BK2008193);中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室开放课题(Y052010016)

摘　　要：以宁粳1号和汕优63为试材,研究不同水平氮肥配施硅肥对水稻叶片叶绿素含量、光合作用、转氨酶活性以及叶片硅素营养的影响。结果表明:在同一氮肥水平下,施用硅肥可不同程度地延缓成熟期剑叶叶绿素含量的下降,提高光合速率和气孔导度,降低胞间CO2浓度,改善叶片光合功能;施用氮肥和硅肥均能提高水稻剑叶中谷草转氨酶(GOT)、谷丙转氨酶(GPT)活性,并且随着施硅肥量增加,水稻叶片硅素积累量与GOT活性呈极显著正相关关系。In order to ascertain the effects of silicon fertilizer on rice photosynthesis and nitrogen metabolism,rice cultivar Ningjing 1（japonica） and shanyou 63（indica） were adopted in this research,and the effects of silicon fertilizer under different nitrogen levels on leaf chlorophyll content,photosynthesis,transaminase activity and silicon content were studied.Results were as follows： Silicon fertilizer application under the same nitrogen level defered the decrease rate of chlorophyll content in flag leaf in varying degrees at the stage of mature,improved photosynthetic rate and stomatal conductance,reduced the intercellular CO2 concentration,and improved the leaf photosynthetic function.Nitrogen fertilizer and silicon fertilizer appication all improved the activities of glutamic-oxaloacetic transaminase（GOT） and glutamic-pyruvic transaminase（GPT） in flag leaf,and rice leaf silicon accumulation had a significantly positive correlation with GOT activity as the silicon fertilizer increased.

关 键 词：水稻 光合作用 谷草转氨酶 谷丙转氨酶 硅肥 氮肥 

分 类 号：S511[农业科学—作物学]