Abstract:The external factors which influence the wild liquorice and the cultivated liquorice (Glycyrrhiza uralensis) in any habitat may be classified into two categories: natural factors and unartificial factors. For cultivated liquorice, some artificial factors such as soil deep tillage, irrigation or the other manipulations of field management should be made an appeal further. The contents of Glycyrrhizic acid and flavonoids were measured in different parts of Glycyrrhiza uralensis under different conditions of a...