卵叶喜盐草(Halophila ovalis)为雌雄异株海草物种，兼具有性繁殖和克隆繁殖。本文以广西竹林海域的卵叶喜盐草种群作为研究对象，对海草生长繁殖进行4个季节的监测，并分析卵叶喜盐草雌株和雄株在海草斑块中心和边缘的繁殖差异。结果表明，卵叶喜盐草的密度、盖度和生物量均是春季达到最高，分别为47%±9%, (2967.36±661.96)ind.·m^-2和(37.68±8.85)gDW·m^-2，年平均盖度为38%±14%，年平均茎枝密度为(1851.02±1036.81)ind.·m^-2，年平均生物量为(27.60±13.97)gDW·m^-2。卵叶喜盐草在春季出现雌、雄花。斑块中心的海草密度和生物量均显著高于斑块边缘，大型底栖生物的生物量也表现为相同趋势。雄株的节间长显著低于雌株的节间长，但雌株和雄株斑块中心和边缘的节间长没有显著差异。该研究结果初步揭示了卵叶喜盐草的繁殖特征，可为后续卵叶喜盐草海草床的保护与修复提供科学理论依据。

Halophila ovalis is a dioecious seagrass species capable of both sexual reproduction and clonal propagation. This study investigated the seasonal growth and reproductive characteristics of H. ovalis population through quarterly monitoring in Zhulin, Guangxi, with particular focus on reproductive differences between female and male individuals at the center and edges of seagrass patches. Results showed that the density, coverage, and biomass of H. ovalis peaked in spring, reaching 47%±9%, (2967.36±661.96)ind.·m^-2, and (37.68±8.85)gDW·m^-2, respectively. Annual averages were 38%±14% for coverage, (1851.02±1036.81)ind.·m^-2 for shoot density, and (27.60±13.97)gDW·m^-2 for biomass. Sexual reproduction occurred in spring, with distinct female and male flowers. Both seagrass density and biomass were significantly higher at patch centers than at edges, a pattern mirrored in macrobenthic biomass. Male individuals exhibited significantly shorter internode length than females, though no significant differences were observed between center and edge positions within either sex. These findings provide fundamental insights into the reproductive ecology of H. ovalis, offering scientific support for the conservation and restoration of seagrass beds.