[Studies of soil embryological characteristics of the Salvia miltiorrhiza of Zhongjiang].

Objective: To study the characteristics of the SiO2/R2O3 in non-zonal purple soil in the light of the difference between the high yield and low yield of Salvia miltiorrhiza.

Method: Both the high yield and low yield drugs developed from the same parental material (k1cy) were chosen in the ecology area in Zhongjiang county, Sichuan Province. By using the air-dried drugs as sample, quadrat sampling method was used to calculat the production.