烤烟缓释肥料对烟株根系和光合特性的影响  

Effect of slow-release fertilizer on the root system and photosynthesis of flue cured tobacco

作　　者：张雪芹[1,2] 彭克勤[1] 王少先[1,3] 李再军[1,4] 

机构地区：[1]湖南农业大学植物激素与生长发育重点实验室,长沙410128 [2]福建省亚热带植物研究所,厦门361006 [3]湖南中烟工业公司技术中心,长沙410001 [4]贵州省贵阳市烟草分公司,贵阳550000

出　　处：《中国生态农业学报》2009年第3期454-458,共5页Chinese Journal of Eco-Agriculture

基　　金：常德卷烟厂项目“烟草高效BD肥研究开发”资助

摘　　要：试验研究了烟草缓释肥料对烟株根系活力、叶片光合特性、烟株干物质积累以及产量和产值的影响。结果表明,施用烟草缓释肥料可显著提高烟株根系活力、叶片叶绿素含量和净光合速率以及烟株干物质的积累,降低胞间CO_2浓度,其中以每株施用45.45g烟草缓释肥料的效果最好,其次为每株施用38.63g烟草缓释肥料。施用烟草缓释肥料能提高烟叶的产量和产值,减少烟草缓释肥料用量的处理虽然降低了烟叶产量,但因改善烟叶品质而提高其产值,缓释肥料对烟叶产值的影响以每株施用38.63g烟草缓释肥料处理效果最好。The effect of slow-release fertilizer on the root system, photosynthetic characteristics and dry-matter accumulation in flue-cured tobacco was studied. The yield and output value of flue-cured tobacco leaf were also analyzed in the experiment. The re- sults show that slow-release fertilizer increases tobacco root activity, chlorophyll content, net photosynthetic rate and dry-matter accumulation while reducing inter-cellular CO2 concentration in flue-cured tobacco leaf. 45.45 g slow-release fertilizer for per plant has the most favorable impact on roots, leaf photosynthetic characteristics and dry-matter accumulation. Also 38.63 g slow-release fertilizer for per plant positively influences these variables. Yield and output value of the leaf are enhanced by slow-release fertilizer. Although yield of tobacco leaf decreases with decreasing application amount of slow-release fertilizer, tobacco output value increases due to the production of high quality tobacco leaf. 38.63 g slow-release fertilizer for per plant has the best effect on tobacco output.

关 键 词：缓释肥料 烤烟 光合特性 根系活力 

分 类 号：Q946.885[生物学—植物学]