摘要
采用铜藻(Sargassum horneri)幼苗为实验对象,分别以Na NO3和Na H2PO4为氮源和磷源,研究了不同氮磷质量浓度及氮磷配比对铜藻幼苗生长的影响。进行了氮、磷单因子实验、双因子实验以及不同氮磷配比实验,实验时间为8d。结果表明:氮和磷对铜藻幼苗生长影响极显著(P<0.01),且当氮、磷的质量浓度分别为8mg/L、0.4mg/L时,铜藻幼苗的特定生长率最大;交互作用影响不显著(P>0.05),不同质量浓度的氮为主效应;不同氮磷质量浓度比影响极显著(P<0.01),且当氮磷比为10:1时,铜藻幼苗的特定生长率最大。研究结果为铜藻幼苗培育过程中营养盐的合理调控提供了理论依据。
The effects of different nitrogen （N） concentrations （0, 2, 4, 6, 8, and 10mg/L） and phosphorus （P） concentrations （0, 0.2, 0.4, 0.6, 0.8, and 1.0mg/L） and N/P ratios （5 ： 1, 10 ： 1, 15 ： 1, 20 ： 1, 25 ： 1, 30 ： 1, 35 ： 1 and 40 ： 1） on the growth and development of macrophyte Sargassum horneri seedlings were studied. The single factor and two-factor experiments were conducted for 8 days. The results showed that the concentrations and proportions of N and P in the medium had great significant （P〈0.01） influence on the growth of the seedlings, but no interaction between N and P （P〉0.05）. The maximal specific growth rate of the seedlings occurred at 8mg/L N, 0.4mg/L P and 10 ： 1 of N to P, respectively. The findings suggested that suitable nutrient concentration and ratio of N and P in the medium was needed for artificial culture of S. horneri seedlings.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2017年第2期368-372,共5页
Oceanologia Et Limnologia Sinica
基金
国家海洋公益性行业科研专项资助
201505022-2号
山东省现代农业技术体系建设专项资金资助项目
SDAIT-26号
关键词
氮磷比
特定生长率
铜藻幼苗
N/P ratio
specific growth rate
Sargassum horneri seedling
