摘要
在2004年冬季用正交试验法考察了温度、盐度、氮肥（硝酸钠）浓度和光照强度4个因子的不同水平下对鼠尾藻Sargassum thunbergii 2～4cm新生枝条生存和生长速度的影响。结果表明，这些枝条能够在室内适宜条件下存活并生长，优化的条件组合是：水温16℃、盐度20、氮肥15mg／L和光照4000lx。光照在最高试验水平下得到高值，预示着更高强度的光照会更有利于生长。温度对鼠尾藻有显著影响，22℃即不能正常存活。极差（R）排列顺序为：温度〉光照〉误差〉盐度〉氮肥，据此可以判定在试验取值范围内温度和光照影响较大，而盐度和氮肥的影响小于误差，为次要因素。
A study on the effects of water temperature （T）, salinity （S）, nitrogenous fertilizer （Nf, sodium nitrate）, illumination intensity （Ii） on the growth of 2-4 cm young tress of Sargassurn thunbergii was carried out in Qingdao in winter, 2004. As a result, the tress could survive and grow under the appropriate conditions in laboratory. The optimal conditions were T 16 ℃, S 20, Nf 15 mgs/L and Ii 4 000 lx. Under test conditions, the biggest growth was gained at the highest Ii, that indicated higher Ii level might be suitable to growth of the young tress. T had also shown significant influence to survival and growth of the young tress, which couldn＇t survive normally over 22 ℃. In according to impact extent on the young tress, the Range （R） sequence was T〉Ii〉 error〉 S〉 Nf. The impact of T and Ii was more significant than S and Nf. In another hand, the effect of S and Nf might be determined as secondary factors for less than the error.
出处
《海洋水产研究》
CSCD
北大核心
2006年第5期7-12,共6页
Marine Fisheries Research
基金
青岛市自然基金项目(04-2-JZ-84)
农业部海洋渔业资源可持续利用重点实验室项目(2003-08)共同资助
关键词
鼠尾藻
新生枝条
生长
正交试验
Sargassum thunbergii Young tress Growth Orthogonal design
