Project design and implementation of the fourth national survey Chinese matiera medica resources Simultaneous determination of rosmarinic acid, oridonin and chrysoplenetin in Isodon rubescens by HPLC Research Progress in Breeding Technique of Sugarcane Healthy Seedlings or Seedcanes A study on Breeding Corn Genetic Male Sterile Double Heterozygous Maintainer Determination of chrysosplenetin, metabolic inhibitor of artemisinin, in rat plasma by UPLC-MS/MS and study on its pharmacokinetics A Study on the Constituents of the Root of Berneuxia thibetica Decne