氮磷钾配施对甘草生物量和活性成分的影响

摘要

Objective:To explore the effects of different N,P and K nutrient solution on the biomass and active component of annual licorice.Methods:N,P and K was used as “3414”test schene by pot experiment,and the nutrient solution of different formula was applied.Above-ground part and root fresh weigh of licorice were observed dynamicly,and active components content of licorice root were determined using HPLC.Results:Effect of different fertilization treatments on the biomass and active components of licorice have some difference.Compared with the control group,root fresh weight of the treatment group N2 P2 K1 and N2 P3 K2 increased by 56.7% and 50.0% respectively,content of licorice acid increased by 29.6% and 65.4% respectively,licorice acid production per plant yield increased by 141.7% and 103.0%.Conclusion:The Optimal Levels of N,P and K combined application could promote the growth of potted annual licorice,and significantly increased the biomass and the content of the active components.%目的：探究不同氮磷钾配方营养液对一年生甘草生物量和活性成分的影响。方法：通过盆栽试验，氮磷钾采用“3414”试验方案，根施不同配方营养液。动态观测地上鲜重、根鲜重的变化，并采用 HPLC 法测定根中活性成分含量。结果：不同配方施肥处理对一年生甘草生物量、活性成分含量的影响存在一定差异。其中，处理组N2 P2 K1、N2 P3 K2的根鲜重比对照组分别增加了56.7％和50.0％，甘草酸含量比对照组提高了29.6％和65.4％，甘草酸单株产量比对照组提高了103.0％和141.7％。结论：适宜水平的氮磷钾配合施用能促进盆栽一年生甘草的生长，显著提高甘草的生物量和活性成分的含量。