生长发育过程中烤烟磷含量的变化

Change of Phosphorus Content in Flue-cured Tobacco During Development

对烤烟下、中、上3个部位的烟叶磷元素含量变化进行了田间试验。结果表明:在烤烟叶片生长发育过程中,随着烟叶着生部位的升高,叶片中磷含量逐渐增加;随着叶龄的增长,各部位鲜烟叶中磷含量逐渐下降,降至最低点后基本趋于稳定;不同部位之间烟叶磷含量的差异不显著,而不同叶龄之间烟叶磷含量的差异显著。

The changes of phosphorus contents in flue-cured tobacco leaves from different stalk positions （upper, middle and lower） during development were studied. The results indicated that phosphorus content increased with the rise of stalk position and decreased with the increase of leaf age; the difference of phosphorus content between leaves from different stalk positions was not significant, while that between different leaf ages was significant.