The radioactivity determination of DNA, RNA showed that the water in stalk transferred into leaves and metabolized. [Conclusion] The water in stalk could transfer into leaves cured with stalk.

• 根据同位素示踪法对DNA、RNA中放射性的测定，发现不论是带茎烘烤还是一次性采烤各时期茎秆或叶柄的水分都参与叶片中核酸代谢。[结论]带茎烘烤时烟茎中的水分能进入烟叶中参与代谢。