黑龍江烤煙不同部位葉片錳鋅銅含量的變化

Variation of Manganese, Zinc, and Copper Contents in Different Leaf Position of Flue-cured Tobacco in Heilongjiang

摘要: 對烤煙下,、中,、上3個部位葉片中錳、鋅,、銅含量的變化進行了研究,。結(jié)果表明，隨著煙葉部位的上升和采收日期的延遲,，煙葉中錳含量隨之降低,，而鋅和銅含量逐漸上升。3個煙葉部位之間鋅含量差異極顯著,，錳和銅含量差異不顯著,；不同采收日期之間錳和鋅含量差異極顯著，而銅含量差異不顯著,；采收日期與煙葉錳元素含量呈顯著負相關(guān),，煙葉中錳與鋅、銅含量之間呈極顯著負相關(guān),，鋅與銅含量之間呈極顯著正相關(guān),。

Abstract: The changes of manganese (Mn), zinc (Zn), and copper (Cu) contents in different-position leaves of flue-cured tobacco were studied. The results indicated that Mn contents decreased, Zn and Cu contents increased with the increasing leaf positions and the delaying harvesting dates. The Zn content difference was extremely significant and the Mn and Cu content difference was not significant among different positions. The difference of Mn and Zn contents was extremely significant and Cu content difference was not significant among different leaf harvesting dates. Leaf harvesting dates were negatively correlated to Mn contents. The extremely significant positive correlations were observed between Zn and Cu, and extremely significant negative correlations were observed between Mn and Zn and between Mn and Cu.