Study on the growth pattern of Cinnamomum camphora Presl and Cinnamomum bodinieri Levl annual seedling

The sequence sample cluster analysis is used to divide the height growth process of C.camphora Presl and C. bodinieri Levl annual seedlings. The results indicated that the juvenile stage,the early growth stage and the rapid growth stage of two seedlings were consistent. The juvenile stage was from March 6 to May 15,the early growth stage from May 16 to July 15, and the rapid growth stage from July 16 to September 15. The late growth stages of them were different , the C.camphora Presl seedling was from September 16 to October 15, but the C.camphora Presl seedling was from September 16 to November 15. The growth period of C.bodinieri Levl seedlings were longer than C. camphora Presl seedlings. Two seedlings have developed main-root, their height,diameter and root growth intercross each other . The monthly growth,gross growth of all indexes in C.camphora Presl seedlings were smaller than C.bodinieri Levl seedlings.The mangemant measures of two seedlings were proposed respectively according to their growth characters.