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.
出处
《贵州农业科学》
CAS
北大核心
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]
关键词
烤烟
连作
养分分布
tobacco
continuous cropping
nutrient distribution
