碱蓬对不同盐度富营养化模拟海水的净化效应及其生长特性

发布时间：2018-07-02 20:43

本文选题：碱蓬 + NaCl处理　；参考：《植物资源与环境学报》2016年04期

【摘要】：研究了碱蓬〔Suaeda glauca(Bunge)Bunge〕对不同盐度(质量浓度8、16和24 g·L~(- 1)NaCl)富营养化模拟海水中总氮(TN)和总磷(TP)的净化效果,并对碱蓬生长及其不同部位TN和TP的含量和积累量进行了研究。结果表明:碱蓬在质量浓度8、16和24 g·L~(- 1)NaCl富营养化模拟海水中均生长良好。随处理时间的延长,种植碱蓬后不同盐度富营养化模拟海水中TN和TP浓度均逐渐降低,TN和TP去除率均逐渐升高,其中在质量浓度16 g·L~(- 1)NaCl富营养化模拟海水中TN和TP去除率最高。处理25 d,在质量浓度16 g·L~(- 1)NaCl富营养化模拟海水中碱蓬单株鲜质量、单株干质量和株高的增量以及平均须根长均最大,单株总干质量最高,均显著高于其他2个处理组;质量浓度16 g·L~(- 1)NaCl富营养化模拟海水中碱蓬单株叶、茎和根中的TN和TP积累量明显高于其他2个处理组,而单株种子中的TN和TP积累量则随着NaCl质量浓度提高而降低。研究结果显示:作为在滨海盐渍化土壤中生长的一年生优势物种,碱蓬可以有效地对有一定盐度的富营养化水体进行生物修复,具有对滩涂养殖废水进行生物改良和修复的潜力。
[Abstract]:The purification effects of Suaeda glauca (Bunge) Bunge on total nitrogen (TN) and total phosphorus (TP) in simulated seawater with different salinity (816 and 24 g L-1 NaCl) were studied. The growth, contents and accumulation of TN and TP in different parts of Suaeda glauca were studied. The results showed that Suaeda salsa grew well in the eutrophication simulated seawater of 816 g / L ~ (-1) NaCl and 24 g / L ~ (-1) NaCl. With the increase of treatment time, TN and TP removal rates in simulated seawater with different salinity and eutrophication decreased gradually, and the removal rates of TN and TP increased gradually, and the removal rates of TN and TP were the highest in the simulated seawater with 16g L-1 NaCl eutrophication. After treatment for 25 days, the fresh weight of Suaeda salsa per plant, the increment of dry weight and plant height and the average fibrous root length of Suaeda salsa were the largest in the simulated seawater of 16g L ~ (-1) NaCl eutrophication, and the total dry weight per plant was the highest, which was significantly higher than that of the other two treatments. The accumulation of TN and TP in the leaves, stems and roots of Suaeda salsa was significantly higher than that in the other two treatments, while the accumulation of TN and TP in the seeds decreased with the increase of NaCl concentration in simulated seawater with eutrophication of 16g L ~ (-1) NaCl. The results showed that Suaeda salsa, as an annual dominant species growing in coastal salinized soil, could effectively bioremediation eutrophic water with a certain salinity. It has the potential of biological improvement and remediation of tidal flat culture wastewater.
【作者单位】：江苏省中国科学院植物研究所江苏省盐土生物资源研究重点实验室;江苏省海洋水产研究所;
【基金】：江苏省水产三新工程项目(Y2015-40) 江苏省科学技术厅现代农业研究开发示范类项目(BE2015323) 江苏省盐土生物资源研究重点实验室项目(YT2014-02)
【分类号】：X714;X173

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