不同施肥处理对曼地亚红豆杉‘Hicksii’生长和紫杉醇含量的影响

采用L9（3^4）正交实验设计，研究了温室盆栽和田间栽培条件下，不同氮、磷、钾施用水平对曼地亚红豆杉‘Hicksii’（Taxus media‘Hicksii’）生长及紫杉醇含量的影响。结果表明，不同的氮、磷、钾施用水平对曼地亚红豆杉‘Hicksii’盆栽苗和田间栽培苗的生长量、枝叶产量和紫杉醇含量有显著影响，影响效应从大至小依次为氮、磷、钾。根据生长综合指标确定最有利于曼地亚红豆杉幼苗生长的氮、磷、钾施用量分别为400、66和200mg·L^-1；最有利于紫杉醇积累的氮、磷、钾施用量分别为200、66和133mg·L^-1。此外，曼地亚红豆杉‘Hicksii’田间栽培苗的生长量、枝叶产量和紫杉醇含量显著高于盆栽苗。

Effects of different fertilization treatments on growth and taxol content of Taxus media 'Hicksii'

The effects of different fertilization levels of N, P and K on growth and taxol content of Taxus media ‘ Hicksii＇ seedlings were studied by the orthogonal experiment design L9 （3^4） in pot culture and field culture conditions. The results show that the different fertilization levels of N, P and K have the remarkable influence on growth quantity, yield of branch and leaf and taxol content of T. media ‘ Hicksii＇ seedlings, and the effect order from big to small is N, P, K. According to the growth overall desirability, the optimal fertilization level of N, P and K being beneficial to growth of T. media ‘Hicksii＇ seedlings is 400, 66 and 200 mg · L^- 1 respectively ; the optimal fertilization level of N, P and K being beneficial to taxol accumulation of T. media ‘Hicksii＇ seedlings is 200, 66 and 133 mg ·L^-1 respectively. Moreover, the growth quantity, the yield of branch and leaf and taxol content of T. media ‘ Hicksii ＇ seedlings cultivated in field are higher than that of the pot seedlings.