文献类型：期刊文献

中文题名：海马齿对氮、磷吸收利用速率的初步研究

英文题名：The Preliminary Study of Sesuvium portulacastrum on the Nitrogen and Phosphorus Absorption Rate

作者：巫晓杰[1];申玉春[1];叶宁[1];吴灶和[1];杜晓东[1]

机构：[1]南海水产经济动物增养殖广东省普通高校重点实验室/广东海洋大学水产学院,广东湛江524025

年份：2011

卷号：27

期号：20

起止页码：92

中文期刊名：中国农学通报

外文期刊名：Chinese Agricultural Science Bulletin

收录：CSTPCD、、北大核心2008、CSCD_E2011_2012、北大核心、CSCD

基金：广东省自然科学基金项目"生态调控与营养调控降低对虾养殖污染的研究"(10152408801000005);广东省科技计划项目"流沙湾;柘林湾环境容量及其生态环境修复技术研究与示范"(2007A032600004);国家公益性行业科研专项"贝类健康养殖模式研究与示范"(Nyhyzx07-047)

语种：中文

中文关键词：氮;磷;吸收速率;海马齿

外文关键词：nitrogen; phosphorus; uptake rate; Sesuvium portulacastrum

中文摘要：为探讨海马齿对N、P营养元素的利用效率,在实验室条件下研究了海马齿对不同浓度N、P及其不同形态N的吸收速率。结果表明:(1)在适宜范围内,海马齿对氮、磷的吸收速率随介质中氮、磷浓度的升高而升高,差异显著(P<0.05)。在氮浓度为100μmol/L时,氮吸收速率最大,为11.11μmol/(g·d);在磷浓度为10μmol/L时,磷吸收速率最大,为0.74μmol/(g·d)。(2)不同氮磷比及氮浓度下,海马齿对氮的平均吸收量仅在氮磷比1:1和5:1组差异显著(P<0.05),其他组差异不显著;不同氮磷比及氮浓度下,海马齿对磷的平均吸收量差异显著(P<0.05)。氮最大吸收速率发生在氮浓度为50μmol/L、氮磷比为50:1时,而磷的最大吸收速率发生在氮浓度为50μmol/L、氮磷比为10:1时。(3)海马齿对NH4+-N的吸收速率随着NH4+-N和NO3--N比的降低而加快,对NO3--N的吸收速率随着NH4+-N和NO3--N比的降低而减慢,差异显著。海马齿对TIN、PO43--P吸收速率呈折线变化趋势,TIN的吸收速率在NH4+-N/NO3--N为12处存在最大值,PO43--P的吸收速率在NH4+-N/NO3--N为1:10处存在最大值。

外文摘要：In order to discuss the utilized efficiency of N and P by Sargassum portulacastrum . The preliminary study on the uptake rates of N and P by Sargassum fusiforme at the different concentrations, and different chemical combination of N and P were made under laboratory conditions. The results showed that： （1） At the suitable levels of concentrations, the uptake rates of N and P by Sesuvium portulacastrum ’ s increased with the increase concentrations of N and P in the media, and it was significantly different （ P〈 0.05）. When the N concentrations were at 100 μmol/L, uptake rates of N by Sesuvium portulacastrum reached the maximum value, and the maximum value was 11.11 μmol/（g·d）; when the P concentrations were at 10 μmol/L, the uptake rates of P by Sesuvium portulacastrum also reached the maximum value, the maximum value of P was 0.74 μmol/（g·d）. （2） At the different ratios of N to P and different N concentrations, the average uptake rates of N were not significantly different except at the ratio 1：1 and 5：1 （ P〈 0.05）; but at the different ratios of N to P and different N concentrations, the average uptake rates of P were significantly different （ P〈 0.05）. The maximum uptake rates of N by Sesuvium portulacastrum occurred at the N concentrations of 50 μmol/L and the ratios 50：1 （N：P）; and the maximum uptake rates of P by Sesuvium portulacastrum occurred at the N concentrations of 50 μmol/L and the ratios 10：1 （N：P）. （3） The uptake rates of NH 4 ＋ -N by Sesuviumportulacastrum increased with the reduction ratios of NH 4 ^＋ -N and NO 3 ^-N, while the uptake rates of NO 3^ -N by Sesuvium portulacastrum decreased with the reduction ratios of NH 4^ ＋ -N and NO 3^ -N, and they all were significantly different （ P〈 0.05）. The trend of the uptake rates of TIN and PO 4 ^3-P were broken line. The maximum uptake rates of TIN occurred at the ratios1：2 （NH 4 ^＋ -N： NO ^3 -N）, and the maximum uptake rates of PO 4 ^3-P occurred at the ratios1：10 （NH 4^ ＋ -N： NO 3^ -N）.