[Correlation Analysis Between Physicochemical Properties of Rhizosphere Soil and Appearance Characters of Codonopsis pilosula Root in Jiuzhaigou County].

Objective: To study the physicochemical properties of rhizosphere soil and their influence on appearance characters of semi-natural cultivated Codonopsis pilosula root.

Methods: The comprehensive methods by combining outdoor investigating with indoor analyzing were applied. Rhizosphere soil samples and plant materials were collected from 35 collection points, the physicochemical properties of soil and the appearance characters of plant materials were investigated.