细基江篱繁枝变种在不同水层中的栽培试验

The Cultivation Expriment of Gracilaria Tenuistipitata V. Liui in Different Layers of Pond Seawater

本文报道了为改变我国华南沿海目前在半咸淡水塘中进行地播式裁培细基江篱繁枝变种单产低的状况而进行的不同水层夹苗栽培和施肥增产试验,证明了越靠近水面江篱藻体生长越快,越接近底部藻钵生长越差,提出如果在水塘中单纯裁培江篱则水塘深度应保持20～30厘米,如果水深超过1米以上,则应采用浮筏式夹苗栽培,并在水中混养鱼虾等。浸泡施肥试验证明,在短短的40天裁培过程施肥藻体比不施肥藻体增产23％,说明了施肥的重要性。

The pond-scattering cultivatino method has been widely used for the artificial cultivation of Gracilaria tenuistipitata V. liui in south china. But the output by this method in generally low. So the authors tested the raft cultivation method and applied fertilizer to the seamoss in the pond near Haikou City of Hainan province. The results showed that the algae near the surface grew faster, the algae in the deeper water grew slower. So that the authers propose that the depth of water should be 20-30 cm if the pond is used for algae cultivation only. If the depth of water is over one meter, raft cultivation method for the algae should be adopted, fish and shrimp could be cultivated also. Dipping test of the algae with the fertilizer showed that the production increased by 23% after 40 days cultivation as Compared to the control.