打顶时期和留叶数对山东烤烟上部叶生长发育的影响

韩玉环, 刘晨, 杨龙, 于涛

Effects of Topping Period and Number of Remained Leaves on Growth and Development of Upper Leaves of Flue-Cured Tobacco in Shandong Province

Han Yuhuan, Liu Chen, Yang Long, Yu Tao

表5 打顶时期与留叶数对上部烟叶碳氮代谢的影响

Table 5 Effects of topping period and remained leaf number on carbon and nitrogen metabolism of upper tobacco leaves

处理 Treatment NR活性 Nitrate reductase activity (U/g) α淀粉酶活性 Alpha amylase activity (U/g) β淀粉酶活性 Beta amylase activity (U/g) 总淀粉酶活性 Total amylase activity (U/g) NI活性 Neutral invertase activity (U/g) 蔗糖含量 Sucrose content (μmol/g) T1 0.18±0.02ab 2.47±0.07c 9.36±0.44b 11.83±0.43b 46.94±0.75bc 92.25±1.21bc T2 0.15±0.02bc 2.95±0.06a 11.15±0.47ab 14.09±0.44a 53.82±1.29a 89.48±1.07cd T3 0.11±0.01c 3.04±0.08a 12.02±1.02a 15.06±1.10a 56.71±1.54a 88.41±1.31d T4 0.21±0.01a 2.39±0.11c 9.40±0.62b 11.79±0.73b 46.21±0.66c 94.91±0.69ab T5 0.13±0.01c 2.83±0.05ab 10.39±0.46ab 13.23±0.51ab 50.30±0.68b 92.20±0.87bc T6 0.11±0.01c 2.56±0.13bc 9.00±0.73b 11.56±0.66b 48.16±1.17bc 96.19±0.67a