硝态氮和铵态氮配施对烤烟光合作用及碳水化合物代谢的影响  

Effect of Combined Application Nitrate Nitrogen and Ammonium Nitrogen on Photosynthesis and Carbohydrate Metabolism of Flue-cured Tobacco

作　　者：韦建玉[1] 邹凯[1] 王军[1] 顾明华[1] 周俊 曾祥难 杨启港 

机构地区：[1]广西大学农学院,南宁530005 [2]广西中烟工业公司,南宁545005

出　　处：《广西农学报》2008年第2期17-21,共5页Journal of Guangxi Agriculture

基　　金：广西中烟工业公司项目(200463)

摘　　要：研究硝态氮和铵态氮配施条件下烤烟的光合作用及碳水化合物代谢的影响。试验结果表明:在同一施氮水平下,在烤烟大田不同生长发育期随着硝态氮施用比例增加烟株的光合速率呈增强趋势,在移栽第60d后,各处理的总叶绿素均达最大值,此时处理T3总叶绿素含量最高;硝态氮比例达75%以上时烟株大田生育期淀粉含量变化呈明显的双峰曲线。The experiment has studied the （ NOr N ）/ammonium-nitrogen （ NI-I4- N ） J metabolism of flue-cured tobacco. The results influence of different nitrogen forms [ nitrate-nitrogen and proportions on photosynthetic and carbohydrate show that the photosynthetic rate was enhanced as the nitrate-nitrogen application quantity increased under the same total nitrogen application level. 60d days after transplanting , the total chlorophyll of all treatments reached at the highest level, among them the treatment 3 was the highest. The content variation of starch had two evident peaks when the proportion of NO3-N reached at 75 % in the field.

关 键 词：烤烟 氮素 光合作用 碳水化合物代谢 

分 类 号：S572.06[农业科学—烟草工业]