Effect of Irrigation Pattern and Irrigation Level on Growth of Glycyrrhiza inflata and the Medicinal Quality of its Root

Background: Although both the root and rhizome of Glycyrrhiza inflata have been used as medicinal material, sales volume price its are much higher than rhizomes. Limiting growth liquorice rhizomes while improving yield quality has become an important problem. Methods: Two irrigation patterns (surface drip subsurface irrigation, i.e. DI SDI) three levels (40%-50%, 60%-70% 80%-90% maximum soil water capacity) were in this study. Result: The plant height, crown width, length, biomass concentrations five components (glycyrrhizic acid, glycyrrhetinic glycyrrhizin, liquiritigenin isoliquiritigenin) SDI treatments significantly those treatments. above parameters reached their under SDI90 treatment (SDI with capacity). was promoted increase amount, but lower that treatment. Thus, regime a relatively high supply can effectively promote roots, inhibiting development