Effect of different light conditions on the growth of nine Zingiberaceae plants

Nine Zingiberaceae plants，such as Hedychium coronarium Koen，Hedychium sp.，Hedychium qingchengense Z. Y. Zhu，Alpinia‘ Red harvest’，Alpinia pumila Hook. F.，Curcuma attenuate，Curcuma kwangsiensis S. G. Lee et C. F. Liang，Kaempferia pulchra，Costus bakeri，were used as experimental materials. The physiological properties and morphology of these nine plants were studied under different light intensity. The light response curves including light saturation point（ LSP） and light compensation point（ LCP） data were also measured. According to the light response data of the nine Zingiberaceae plants，combined with actual conservation observation experience，finally，we obtained the approximate range of illumination for each plant. The aim is to provide reference and reference for the refinement and landscape configuration. The results showed that Alpinia pumila Hook. F. and other Alpinia species were relative shade-requiring，of which were difficult to adapt to the whole light. Curcuma attenuate and Hedychium coronarium Koen were relative heliophilous. Under the condition of excessive shading， the Hedychium species would easily cause lodging. It was suitable for planting nine Zingiberaceae plants in the 70% shading environment.