A preliminary study on Pistia stratiotes and their attachments’ removal efficiency of nitrogen and phosphorus in the cage culture waters#br#

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A preliminary study on Pistia stratiotes and their attachments’ removal efficiency of nitrogen and phosphorus in the cage culture waters#br#

（Key Laboratory of Freshwater Fishery Germplasm Resources, Ministry of Agriculture, Shanghai Ocean University,
Shanghai Engineering Research Center of Aquaculture,
Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai 201306, China）

Online:2018-08-02 Published:2018-04-20

大薸及其附着物对网箱养殖水域氮磷去除效果的初步研究

（上海海洋大学，农业部淡水水产种质资源重点实验室，上海市水产养殖工程技术研究中心，
水产动物遗传育种中心上海市协同创新中心，上海 201306)

通讯作者: 马旭洲（1965—），副教授，博士，研究方向：环保型生态网箱研究。E-mail：xzma@shou.edu.cn
作者简介:王奇杰（1988—），男，硕士研究生，研究方向：渔业生态养殖。E-mail：wangqijie1988@163.com
基金资助:
国家星火计划项目（2011GA680001）；水产动物遗传育种中心上海市协同创新中心（ZF1206）；上海市重点学科资助项目（Y1101）

Abstract

Abstract: In order to reduce the pollution of cage culture to waters, Pistia stratiotes were respectively planted in an experimental cage and a comparison cage, which were compared and analyzed. The results showed that Pistia stratiotes and their attachments in the experimental cage had significant removal efficiency of nitrogen and phosphorus in the waters. 201.26 g nitrogen and 71.53 g phosphorus were removed by Pistia stratiotes; and 5.91g nitrogen and 3.01g phosphorus were removed by Pistia stratiotes’ attachments in the 30-day experiment. The amount of nitrogen and phosphorus removed by Pistia stratiotes’ attachments were 2.94% and 4.21% of those removed byPistia stratiotes. The recovery rates of nitrogen were significantly different(P < 0.05) in the experimental cage and the comparison cage, which were (41.27±1.28)% and (37.15±1.26)% respectively; and the recovery rates of phosphorus were significantly different(P < 0.05) in the experimental cage and the comparison cage, which were (31.26±1.27)% and (27.87±1.13)% respectively. The utilization rates of nitrogen were significantly different(P < 0.05) in the experimental cage and the comparison cage, which were (26.32±2.32)% and (17.21±0.51)%, respectively; and the utilization rates of phosphorus were significantly different(P < 0.05) in the experimental cage and the comparison cage, which were (23.15±1.75)% and (14.63±0.43)% respectively. The result showed that Pistia stratiotes and their attachments can reduce the pollution of cage culture to waters through absorbing the nitrogen and phosphorus in the waters.

Key words: aquaculture, attachment, Pistia stratiotes, nitrogen and phosphorus removal

摘要： 为了减少网箱养殖对水体的污染，在网箱内种植漂浮性水生植物大薸，并设置试验网箱和对照网箱进行对比分析。结果显示，试验网箱内的大薸(Pistia stratiotes)及其附着物对养殖水体中氮、磷去除效果显著。养殖30 d内，大薸共去除氮201.26 g，去除磷71.53 g，附着物共除去氮5.91 g，去除磷3.01 g，附着物氮、磷去除分别占大薸氮、磷去除的2.94%和4.21%。试验网箱和传统网箱，氮的回收率分别为(41.27±1.28)%和(37.15±1.26)%，两组网箱间差异显著(P＜0.05)；磷的回收率分别为(31.26±1.27)%和(27.87±1.13)%，差异显著(P＜0.05)；氮的利用率分别为(26.32±2.32)%和(23.15±1.75)%，两组网箱间差异显著(P＜0.05)；磷的利用率分别为(17.21±0.51)%和(14.63±0.43)%，差异显著(P＜0.05)。研究表明，大薸及其附着物通过吸收水体中的氮、磷等营养物质，可以降低网箱养殖对水体的污染。

关键词: 网箱养殖, 大薸, 附着物, 氮磷去除

WANG Qijie, MA Xuzhou. A preliminary study on Pistia stratiotes and their attachments’ removal efficiency of nitrogen and phosphorus in the cage culture waters#br#[J]. .

王奇杰，马旭洲. 大薸及其附着物对网箱养殖水域氮磷去除效果的初步研究[J]. 渔业现代化杂志.

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