【摘要】 在盆栽条件下 ,研究了不同时间环割对烟株酶活性及烟碱和钾含量的影响。结果表明 ,环割与不环割相比 ,能降低烟株的硝酸还原酶 (NR)活性 ,提高烟叶转化酶活性 ,改善烟叶碳氮代谢。在打顶当天和打顶前 10d进行环割 ,降低烟叶烟碱含量和提高钾含量的效果明显。更多还原

【Abstract】 Effects of girdling at different times on enzymatic activity of tobacco plant and nicotine and potassium content in the leaves of flue-cured tobacco were studied in pot test.The results showed that compared to the cultivation with no girdling,the application of girdling could reduce the activity of nitrate reductase (NR) of tobacco plant and increase the activity of invertase in the leaves of flue-cured tobacco.It could significantly reduce the nicotine content and increase potassium content when conducting girdling at the topping day or 10 days before topping.更多还原