摘要
作者总结了前人的经验提出:在常温条件下利用日光进行育苗。试验的重点是提高幼苗的大小与防除附着物的方法。采用从育苗基质、采孢子时期、室内短期培育及下海育苗一系列新方法,结合人工洗刷技术等多方面措施,当年获得:每cm苗绳上出1cm以上大小的幼苗5株以上的结果。这样大小的幼苗比较容易养成,达到实用阶段,所以提出一套采孢子育苗的工艺流程。这是石花菜人工育苗的最好记录。
A study on the artificial cultivation of spores of Gelidium on rope curtains was perform. The methods and results are described as follows.
1. For collecting the spores, the optimum temperature is between 24-26℃ and the optimum season is from mid July to early August in the north China sea.
2. 50 curtains weaved with vinylon ropes were used as substrates to which the spores were attached and cultivation was carried out in three 4m^2 pools for 10-15 days before the curtains were transferred for cultivating in the sea.
3. In the sea, the buds were first grown on the rope curtains hanging on rafts 70-100cm. below the water surface. About a month later, the buds were so grown that they changed into stolon and rose up vertically. When the temperature was lowered at 23-24℃, the rope curtains should be turned into 2m. long ropes and cultivation was carried on at 20-50cm. below the water surface. When the stolons grew large and were creeping around the ropes, the vertical-laying ropes were brought near the surface and laid horizontally.
4. In an example of our study, 50 curtains were turned into 400 ropes of two meters long at which grew dense sporelings. By the mid December, the frond could reach a maximum length of 3cm. while the average size is l-2cm. The density of the sporelings longer than 1cm. is 5.5 sporelings per cm. of ropes.
出处
《海洋湖沼通报》
CSCD
北大核心
1990年第2期72-79,共8页
Transactions of Oceanology and Limnology
