Abstract:There was significant influence of environmental factors (soil water content, temperature and CO 2 concentration etc.) on the light requirement of ginger. 80% soil water content was good for photosynthesis and water stress decreased the ability of adapting strong light in ginger. In the conditions of supplying water formally, the light utilization ratio was higher at 25~30℃,in addition the ability of adapting strong light increased significantly with the rising of CO\-2 concentration. As the results gin...