【摘要】 通过测定山地烟不同部位叶长、单叶重、钾、氯含量，明确叶长及钾、氯含量的关系。结果表明，山地烟的上、中、下部叶长主要在55～70 cm、65～80 cm和60～75 cm之间。中、上部叶钾含量随着叶长的增加先升后降，峰值分别出现在L 75和L 60,下部叶钾含量则随着叶长的增加而下降。上部叶氯含量随着叶长的增加先升后降，峰值为L 65;中、下部叶则随着叶长的增加而降低。上部叶钾氯比仅L 60高于4.0,中、下部叶钾氯比均高于4.0。上部叶钾、氯含量与叶长呈极显著正相关，而下部叶则呈极显著负相关，中部叶氯含量与叶长呈极显著负相关，其钾氯比与叶长呈极显著正相关。由此可见，上、中、下部叶长分别在60～65 cm、70～75 cm和55～60 cm的烟叶钾含量较高，氯含量适宜，这为山地烟株型的调控提供一定的理伦指导。更多还原

【Abstract】 The experiment was conducted by measuring the leaf length of different stalk position, single leaf weight, potassium content, and chloride content. The results showed that the range upper leaves length was mainly from 55 cm to 70 cm while that of cutters was mainly from 65 cm to 80 cm, and that of lower leaves was mainly from 60 cm to 75 cm. The potassium content of upper leaves and cutters were increased first and then was decreased with the increase of leaf length. The peak values of upper leaves appeared at L 60 while that of cutters appeared at L 75. The potassium content of lower leaves was decreased with the increased of leaf length. The chloride content of the upper leaves was increased first and then was decreased with the increase of leaf length and the peak value appeared at L 65 while that of cutters and lower leaves was decreased with the increase of leaf length. The ratio of potassium to chloride of upper leaves was only higher than 4.0 at L 60 while that of cutters and lower leaves was all higher than 4.0. The potassium and chloride content of the upper leaves were extremely significantly positively correlated with leaf length, while those of lower leaves were extremely significantly negatively correlated. The chloride content of cutters was extremely significantly negatively correlated with leaf length while its ratio of potassium to chloride was extremely significantly positively correlated. The potassium content was higher and the chloride content was suitable in the upper leaves length of 60-65 cm, the cutters length of 70-75 cm, and the lower leaves length of 55-60 cm in flue-cured tobacco in mountainous area. The results provided a certain reference for the regulation of flue-cured tobacco plant types in mountainous areas.更多还原