Abstract: Scirpus mariqueter is a perennial and salt and flood-tolerant clone plant; it is also a typical pioneer plant which grows best in the mean tide level. Sexual reproduction is an effective method of clone plant regeneration. In this paper, we discuss the sexual reproduction investment about Scirpus mariqueter under different disturbance conditions.The plant density and height, some characteristics of fruit and seed and the relativity of main indexes are analyzed. We find that water table is not a restrictive ...