摘要： 田间条件下对烤烟下、中、上3个部位叶片成熟过程中钙、镁、铁元素含量的变化进行了分析。结果表明:随着烟叶部位的上升,叶片中钙、铁含量均表现为随之降低的变化规律,镁含量呈现出先降低又增加的变化;随着移栽后天数的增加,新鲜烟叶中各部位叶片钙、镁、铁含量无明显的变化规律性。3个烟叶部位之间钙、镁含量差异极显著,铁含量差异不显著;不同移栽后天数之间钙、镁、铁含量差异均不显著。移栽后天数与烟叶钙、镁、铁含量之间的相关性不显著;烟叶中钙与镁、钙与铁、镁与铁含量之间均呈极显著正相关。

关键词: 烤烟, 叶片, 钙, 镁, 铁

Abstract: The changes of calcium ,magnesium and iron contents in flue-cured tobacco green leaves during the maturationprocess were analyzed .Furthermore , the variance and relation analysis with calcium ,magnesium and iron in green leaveswere carried out .Leaf samples were taken from different leaf positions and days in Heilongjiang Province .The results indicatedthat calcium and iron contents were decreased with the increasing leaf positions .With the increasing days after transplanting, calcium ,magnesium and iron contents were not regularity .The difference of calcium and iron contents in differentleaf positions was extremely significant , but magnesium content was not significant .The difference of calcium ,magnesiumand iron contents was not significant in different days .The day after transplanting was not significant correlation with calcium,magnesium and iron contents .The extremely significant positive correlations were observed between calcium and magnesium,between calcium and iron , and between magnesium and iron

Key words: Flue-cured tobacco, Leaf blades, Calcium, Magnesium, Iron

中图分类号: 

• S572