川芎苓种等级划分与植物生长发育的相关性研究

Object Classification criterion of Lingzhong is studied by comparing influences of Lingzhong of different grades on its growth. Method Field testing is made about Lingzhong from 1~3 grades according to traditional experience of criterion classification. Observe its growth condition during its six different growing period(seedling stage, stem growth and development stage, leaves withering stage, second stem and leaves growing stage, stooling stage and rhizome expanding stage). Results Grades significantly influenced its growth and the influence effect varies at its different growth period. The first and the second grades apparently excel the third grade at Chuanxiong's growth. Conclusion The results provide references for the quality classification criterion of Chuanxiong Lingzhong.