移栽期对烤烟叶片组织结构的影响

采用石蜡切片的方法对烤烟龙江911的叶片解剖结构进行了研究，旨在通过比较不同移栽期烤烟叶片厚度、栅栏组织厚度、海绵组织厚度等指标探索烤烟移栽期和成熟度的关系。研究结果表明：移栽期对于叶片解剖结构的影响很大。3个移栽期相比，5月1日移栽的烤烟中部叶片厚度、栅栏组织、海绵组织、细胞空隙度最大，各部位叶片差异达极显著水平；5月10日和5月20日的烤烟下部叶最厚，叶片厚度随叶位的上升而变薄，各部位之间差异不显著。

Effects of Transplanting Date on Leaf Anatomical Structure of Flue-Cured Tobacco

This study was conducted, using the method of slices of paraffin wax, to investigate anatomical structures in leaves of flue-cured tobacco at three transplanting dates of Longjiang911 variety on May 1", May 10th, and May 20th respectively. The comparison and analysis of the thickness of leaf, spongy and palisade parenchyma were used to investigate the correlations of transplanting date with maturity. The result showed that transplanting date influenced thickness of leaf, spongy and palisade parenchyma significantly. The thickness of leaf, spongy and palisade parenchyma and the intercellular space of mesophyll for the tobacco transplanted in May 1st were the biggest of all treatments. But for the tobacco transplanted in May 10th and May 20th, the thicknesses of bottom stalk tobacco were thicker than others, the thickness of leaf decreased by rise of the leaf position.