【摘要】 以烤烟品种K3 2 6为材料 ,对成熟期不同水分条件下叶片植物学特性进行研究。结果表明 :随土壤含水量的降低 ,气孔密度增加 ,气孔开度减小 ;同部位烟叶叶片增厚 ,栅栏组织加厚 ,海绵组织变薄 ,单位长度栅栏组织细胞数目增多 ,细胞变细、变长 ,排列更加紧密 ,栅栏组织发达 ,有利于进行光合作用。对于不同部位的烟叶 ,随部位的升高 ,叶片和栅栏组织都增厚 ,栅栏组织细胞和细胞数目均增大。因此生产上合理调控成熟期烟田土壤水分 ,控制叶片厚度 ,是提高烟叶质量的重要途径更多还原

【Abstract】 The botany characters of tobacco leaf from the different soil moisture in the maturing stage were studied. The results showed that the density of stomata, the thickness of the leaf and palisade tissues in the same location of tobacco added with the decrease of soil moisture, sponge tissues became thin, the number of cells of palisade tissues of the unit length added, the cells became more slim and longer with the decrease of soil moisture, which were beneficial for the photosynthesis. When the leaf location became high, the leaf and palisade tissues were heavy and the number of cells and the volume of cells of palisade tissues increased. So it was an important measure for improving the quality of tobacco leaf and the soil moisture were rationally adjusted in order to control the thickness of tobacco leaf in the maturing stage.更多还原