Effect of different fertilizing levels on yields and efficiency components of Pinellia ternata from Sichuan Nutrient uptake characteristics of nitrogen, phosphorus and potassiumof Pinellia ternate from Sichuan during growth stage Effects of different storage methods on germination and physiological indexes of seed-stem of Pinellia ternata from Sichuan Comprehensive evaluation on yield and quality of Pinellia ternata from Sichuan based on principal component and cluster analysis