石花菜夏茬养殖的技术试验

THE EXPERIMENT ON TECHNIQUE OF SUMMER-PLANTING OF GELIDIUM AMANSII LAMX

本文报道了石花菜夏茬养殖中存在的三个生产问题的试验结果。结果表明,利用绳养的春茬石花菜,以采枝法收获后,留下底茬进行夏茬养殖,其效果则是产量稳定,省去分苗夹绳的工序,节约了人力,节约了时间,使一年连养三茬成为可能。另外,放养夏茬的种菜,采用踩洗法可以解决苗种上附着物的清除问题,采用多种防治措施能抑制养殖中附着物的危害。多茬养殖的苗种用营养繁殖解决之后,开展双绳养殖提高光能的利用,可以提高产量达60%以上。石花菜的夏茬养殖试养了5亩,结果表明,养殖技术可行,克服了烂苗、掉苗及敌害生物的影响。

The Summer-planting of Gelidium is successfully conducted. The technical problems are solved and the results are as follows: 1. By Summer-planting, it is possible to produce 150 kg of dried Gelidium per mou with single rope culture method and 240 kg with double rope method. 2. In Spring, the plants of Gelidium are growing vegetatively. The adult plants split into small pieces which provide the 'seeds' for Summer planting. The summer adult plants do the same for the next crop. It differs from the traditional seaweed cultivation as this method depends on vegetative propagation. With this method it is possible to produce three crops a year in the northern China sea.