鼠尾藻池塘栽培生态观察  

Ecological observations on Sargassum thunbergii cultivated in ponds

作　　者：胡凡光[1] 王志刚[1] 李美真[1] 徐智广[1] 王翔宇[1] 

机构地区：[1]山东省海水养殖研究所,青岛266002

出　　处：《渔业科学进展》2013年第6期124-132,共9页Progress in Fishery Sciences

基　　金：国家863项目(2012AA10A413);国家海洋公益项目(201105008-2;201305005);山东省科技攻关计划项目(2009GG10005012);山东省农业重大应用技术创新(2012.6-2014.6)共同资助

摘　　要：2009年3月～2010年7月对鼠尾藻池塘栽培生长情况进行了研究分析。试验根据池塘水环境因子（水温、光照强度、盐度和pH）及鼠尾藻的生长特性，设置了自然苗、人工苗、帘子苗生长对比试验，不同水层、不同流速栽培试验及不同光照强度对鼠尾藻生长影响的试验。结果表明，1）相同试验条件下，自然苗生长最好，帘子苗其次，人工苗生长最慢；2）不同水层栽培结果显示，40～60cm水层鼠尾藻生长最好，其次是O～20cm水层，再次80～100cm水层，150～200cm水层生长最慢，并且于5月中旬即开始衰退脱落；3）流速1m/s条件下鼠尾藻生长最快，随着流速的逐渐降低，鼠尾藻生长也逐渐变慢；4）光照强度为4000～6000lX时鼠尾藻生长良好，高于10000lX或低于3000lX则鼠尾藻生长相对较缓慢。观察发现，池塘水温在12～18℃时鼠尾藻生长最快，在9～12℃和18～24℃时生长较缓慢，24℃以上停止生长并出现腐烂脱落现象。To investigate the bioremediation function of Sargassum thunbergii, the sea weed was cultivated in ponds from March 2009 to July 2010, and the growth of thalli cultured in four modes with different temperature, light intensity, salinity and pH was determined. The results showed that, 1） under the same experimental conditions, wild seedlings grew faster than the curtain seedlings, and artificial seedlings grew even slower; 2） water-level of 40-60 cm was most suitable for the growth of S. thunbergii, better than 0-20 cm or 80-100 cm, while 150-200 cm showed the slowest growth and the thalli began to drop off due to decaying in mid May; 3） the thalli grew most rapidly at water flow rate of 1 m/s, which slowed down with the decrease of flow rate; 4） the thalli growth was at its best at light intensity between 4 000-6 000 Ix, and the growth rate was relatively slower with the light intensity above 10 000 lx or below 3 000 Ix. Ad ditionally, this study also showed that from late April to mid May （water temperature, 14-18 ℃）, S. thunbergii entered the fast-growth stage, with rapid increase of length and biomass;from mid May to early June （water temperature, 18-23 ℃）, the seaweed started to spawn and its length and biomass reached the maximal values;from mid-to-late June （water temperature, ）24 ℃）, the seaweed began to decay and rot off due to the increasing water temperature.

关 键 词：鼠尾藻 池塘栽培 环境因子 生物量 生殖托 

分 类 号：S968.4[农业科学—水产养殖]