连作对烟株各部位养分分布的影响  

Effect of Continuous Cropping on Nutrient Distribution of Different Positions of Tobacco Plants

作　　者：王智明 张长华 陈叶君 潘文杰 黄建国[3] 王世明 高维常 

机构地区：[1]贵州省湄潭县烟草专卖局,贵州湄潭564100 [2]中国烟草西南农业试验站,贵州贵阳550018 [3]西南大学资源与环境学院,重庆400716

出　　处：《贵州农业科学》2009年第12期72-74,共3页Guizhou Agricultural Sciences

基　　金：国家烟草专卖局项目"连作烟地土壤障碍因子的发生机理及改良技术研究"[国烟科110200401011(2004)615]

摘　　要：为探索连作对烟株养分分布的影响,采用烤烟长期连作盆栽试验。结果表明,随着连作季数增加,下部叶中氮磷钾含量降低,上部叶中磷含量降低,上中部叶中钾含量增加;对同一处理的烟株,在连作6季时,能显著促进钾素的转移再利用,增加上部叶片对钾素的吸收积累。The pot experiment was carried out in the long-term tobacco continuous cropping to probe the effect of tobacco continuous cropping on nutrient distribution of different positions of tobacco plants. The results showed that the N, P and K content in the lower leaves decreased, the P content in the upper leaves decreased and the K content in the upper and middle leaves increased with increase of continuous cropping number, and six number of continuous cropping could effectively promote the transfer and reutilization of K element and improve K absorption and accumulation in the upper leaves of the tobacco plants with the same treatment.

关 键 词：烤烟 连作 养分分布 

分 类 号：S572[农业科学—烟草工业]