不同形态氮素及ABA和6BA对烟草生长、养分吸收及其在体内分配的影响  

Effects of different nitrogen forms and application of abscisic acid and 6-benzylaminopurine on growth, nutrient uptakes and their distribution in tobacco plants

作　　者：王国英[1] 刘东臣[1] 赵紫娟[2] 崔建宇[2] 李春俭[2] 

机构地区：[1]河北农业大学资环学院，河北 保定 071001 [2]中国农业大学植物营养系,北京 100094

出　　处：《河北农业大学学报》2002年第2期21-24,31,共5页Journal of Hebei Agricultural University

基　　金：国家 973项目 (G1999011707) ;国家自然基金项目 (30070452)

摘　　要：研究表明 ,铵态氮抑制植物生长可能与植物体内源激素水平的变化有关。为证实不同形态氮在植物体内的作用 ,通过结合使用植物激素脱落酸 (ABA)及 6 苄基腺嘌呤 (6 BA) ,研究了NH+ 4 N和NO- 3 N对烟草生长、叶片蒸腾、养分吸收及在体内分配的影响。与供应NO 3 N相比 ,NH+4 N不仅抑制了植物生长、阳离子吸收 ,而且抑制了植物的蒸腾 ,表明NH+4 N处理导致至少部分气孔关闭。供应NO-3 N条件下 ,用ABA喷施叶片也能降低叶片蒸腾 ,但对烟株生长及养分吸收基本没有影响。 6 BA不能明显缓解NH+4Some reports showed the inhibitory effect of ammonium nitrogen decreased plant growth might be related to plant endogenous hormone level. Under different nitrogen forms and application of abscisic acid and 6 benzylaminopurine, the effect of plant growth, transpiration, nutrient uptake and distribution on tobacco were studied. Compared with nitrate treatment, ammonium treatment not only decreased tobacco growth and cation uptake but also reduced plant transpiration. This showed that stoma was partly closed under ammonium treatment. Nitrate with ABA decreased plant transpiration, but didnt apparently affect plant growth and nutrient uptake. 6?BA didnt obviously mitigate the inhibitory effect caused by ammonium treatment.

关 键 词：生长 养分吸收 体内分配 氮素形态 ABA 6-BA 烟草 

分 类 号：S572.062[农业科学—烟草工业] S143.1[农业科学—作物学]