Abstract: The morphological characteristics and reproductive strategies of L.dauricum planted in different light intensities was studied by experimentalecology method. The results showed that conclusions between both this experiment andthe field investigation are the same. The growth is the best under relativelight intensity from 49.47% to 100%, the werest is under 11.25%, and theintermediate is under 25.47%. The reproductive strategies change with the designed light gradient, under the weak light 79.12% energy is allocated to the vegetative propa-gatian organ-bulb, and the sexual reproduction could not succeed. But theenergy was transfermed to the sexual reproduction organ, with increaseof the light intensity. When the relative light intensity is 25.47%, alloca-ted energy to the sexual reproduction organ is 1/3 of vegetative propaga-tion organ. When the relative light intensity increase to 49.47%. theallocation to both reproduction organ tend to close to each other.

Key words: Lilum dauricum, light gradient, morphological characteristics, reproduction