Abstract: With simulation experiment, the relationship between the phenology and growth of ginseng (Panax ginseng) under forest and some ecofactors, e. g., light. soil water and temperature was studied. Ginseng could grow best under conditions of 10～35% relative light intensity, 0.6～0.8 crown density and 30～45% soil water content. Its phenological process and growth were significantly affected by air temperature. It began to shoot when the air temperature was about 5℃, and its height growth became fast at about 15℃ in early May, and stopped at the beginning of June. It is advantageous for its growth through adjusting the niche conditions artificially.

Key words: Panax ginseng, Ecological factors, Growth, Physiological characteristics