海南海桑的育苗造林技术

The Nursing Technology of Soneratla hainenensis

海南海桑Sonneratia hainanensis KO,E,Y.Chen et W.Y.Chen是我国特有的海桑科红树林濒危植物,仅天然分布于中国的海南岛。海南海桑采用种子育苗。每年6-9月为最佳采种期。洗净的种子应置于含有水的储存缸中,避光、阴凉处储存备用。育苗采用配制培养土,育苗过程中应注意补充淡水降低苗床盐度,并注意预防螃蟹、病虫对幼苗的危害。造林可选秋茄(Kandelia candel)等其它树种营造混交林。选用40～80cm高的苗木,株行距规格可为4m×4m,在抚育期内应注意清除藻类及残次林木等。

Sonneratia hainenensis is an endangered mangrove species of Sonneratiaceae. It is an endemic species only naturally distributed in Hainan ISland, China. The seedlings of S. hainenensis are from their seeds. The best period of seed collection is from June to September every year. Cleaned seeds should be soaked in water of a jar. Dark and cool storage conditions are needed. Culture soil are made up. In the process of nursing shoots, fresh water should be supplied to reduce the salinity of seedbed, and certain measures should be adopted to prevent and control plant diseases and eliminate pests and crabs. Kandelia candel etc. can be planted with Sonneratia hainanensi to construct mixed forest. The seedlings should be 40 - 80 cm high, and the space of plantation should be 4 m x 4 m. During the tending period, alga and unnecessary woods should be cleared away.