补充光照及微量元素对烟苗生长的影响

摘要

Effects of supplementary light of various wavelength and trace elements, i. e. boron and manganese, on main physiological indexes of tobacco seedling were studied to produce strong and high stem tobacco seedlings under low temperature and weak light in winter and spring in Chinas southeast tobacco growing areas. Results showed that supplying light with blue and red plant growth lamp in proportion of 2: 1 and 1:1 promoted plant height, stem circumference, chlorophyll and carotenoid content of tobacco seedlings compared with control and full blue lamp. Analysis of ariance and multiple comparison showing significant differences. Supplying boron by 100 mg/kg or manganese by 200 mg/kg in fertilizer significantly increased height, stem diameter, leaf length, root activity and protein content. Manganese supplement also increased content of chlorophyll and carotenoid.%为克服我国东南烟区冬春漂浮育苗受低温寡照影响导致烟苗生长发育不良的障碍,培育抗逆性强的高茎壮苗,研究了在育苗工场内用不同波长植物生长灯补充光照和在育苗肥中添加硼、锰微量元素对烟苗生长和主要生理指标的影响.结果表明,与对照和全蓝光相比,采用蓝∶红2∶1和蓝∶红1∶1的植物生长灯搭配补光,对烟草漂浮苗株高、茎围的生长及叶片中叶绿素和类胡萝卜素含量有明显的促进作用,方差分析和多重比较结果均达到极显著水平；在漂浮育苗肥中添加100mg/kg硼元素或200 mg/kg锰元素可显著增加烟草漂浮苗的株高、茎围、叶长及根系活力和蛋白质含量,添加锰元素还有助于增加叶片中叶绿素和类胡萝卜素含量.说明补充光照和微量元素有助于烟草漂浮育苗的生长.