温度和营养盐胁迫对龙须菜氨氮吸收速率及生长速率的影响

以龙须菜（Gracilaria lemaneiformis）为试验材料,分别研究了温度和营养盐协迫对其生长及氨氮吸收速率的影响。结果表明,2个环境因子对龙须菜生长和吸收氨氮速率均有显著影响。龙须菜在20℃条件下生长较其在10℃和30℃条件下生长快速（P〈0.01）;营养盐含量过高和过低均不利于龙须菜的生长;营养盐水平越...

Effects of Stress of Temperature and Nutrients on Ammonia Nitrogen Uptake Rate and Growth Rate of Gracilaria lemaneiformis

The combined effects of temperature and nutrient levels on the uptake of NH＋4-N and the growth rate of Gracilaria lemaneiformis were studied indoors. The results showed that both of the two environmental factors had significant effects on the uptake rate of NH＋4-N and growth rate of G. lemaneiformis. The G.lemaneiformis growth was rapider at the temperature of 20℃ than that at both 10℃ and 30℃ （P0.01）, and furthermore, excessively high and low nutrient levels were not conductive to the growth of G. lemaneiformis. The uptake of NH＋4-N was positively related to the nutrients levels （P0.05）, while the uptake of NH＋4-N of G.lemaneiformis exhibited a decreasing trend with the culture time extending. Considering its high capacity of absorbing nitrogen, G.lemaneiformis can be employed as potential bioremediation tools in eutrophication zones.