酸性土壤的烟株生长及烟叶产质量调控研究

 试验结果表明:用酸性土壤专用的营养调节剂补充养分、施用石灰提高土壤pH值,均可缩短烟株的生长发育期,使烟株能正常的生长发育,提高烟叶的品质。特别是两项措施叠加效果更为明显,从此结果可看出:由于根际土壤pH值过低影响烟株根系生长、养分的吸收,造成的烟株营养失衡是土壤pH值影响烟叶产量和品质的两个主要原因。

Influence of Acid Soil on the Quality of Tobacco Leaf And Yield and Regulation to Tobacco's Growth

The result showed that using soil-special nutrition regulator to increase fertilization and applying lime to raise pH value, which could shorten growth and development days of tobacco, improve quality of tobacco leaf. Especially, using both treatment at the same time had greater effect. From this result we can conclude that there were two main reasons to influence the quality of tobacco leaf and yield. First, too low of pH value in rhizospheric soil influenced the growth of tobacco root system. Second, barrier of nutrition absorption caused imbalance of nutrition in tobacco.