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The influence of spacing and aerobic time on the dissolved oxygen levels by micropore tube aerator on the bottom of apostichopus japonicus ponds#br#

 LI Bin1，WANG Yingeng1,  LIAO Meijie1，DU Tuo3，FAN Ruiyong2( 1. Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences; Qingdao National Laboratory for Marine Science and Technology, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao  266071,China；#br# 2. Qingdao Ruizi Precious Seafood Development Limited Company, Qingdao 266409，China；#br# 3. Shanghai Ocean University, College of Fisheries and Life Science, Shanghai 201306, China）   

  1. ( 1. Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences; Qingdao National Laboratory for Marine Science and Technology, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao  266071,China；
    2. Qingdao Ruizi Precious Seafood Development Limited Company, Qingdao 266409，China；
    3. Shanghai Ocean University, College of Fisheries and Life Science, Shanghai 201306, China）
  • Online:2017-12-20 Published:2022-09-26

底部微孔增氧管布设距离和增氧时间对刺参养殖池塘溶氧的影响

李 彬1，王印庚1，廖梅杰1，杜 佗3，范瑞用2 （1中国水产科学研究院黄海水产研究所，青岛海洋科学与技术国家实验室，
海洋渔业科学与食物产出过程功能实验室，山东 青岛 266071；
2青岛瑞滋海珍品发展有限公司，山东 青岛 266409；
3上海海洋大学水产与生命学院，上海 201306）   

  1. （1中国水产科学研究院黄海水产研究所，青岛海洋科学与技术国家实验室，
    海洋渔业科学与食物产出过程功能实验室，山东 青岛 266071；
    2青岛瑞滋海珍品发展有限公司，山东 青岛 266409；
    3上海海洋大学水产与生命学院，上海 201306）
  • 通讯作者: 王印庚（1963—），男，研究员，研究方向：水产病害控制。E-mail: wangyg@ysfri.ac.cn
  • 作者简介:李彬(1984—)，男，助理研究员，研究方向：养殖生态与疾病防控。E-mail: libin@ysfri.ac.cn
  • 基金资助:
    中央级公益性科研院所基本科研业务费专项(20603022016008)；山东省农业良种工程重大课题“速生抗病耐高温刺参良种选育”

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Abstract: In order to clarify the effects of the dissolved oxygen levels and the influence of spacing and aerobic time on the dissolved oxygen level by micropore tube aerator on the bottom of apostichopus japonicus ponds, the concentrations of DO, NO2--N and COD  were detected during one oxygen increasingcycle (A 7-day cycle, 8h from 11:00 am to 7:00 am for oxygen increasing per day.) in sapostichopus japonicus ponds in summer. The results showed: the DO increased continuously during the 8-hour continuous period for oxygen increasing; The rising rate of DO was quiet low in the first 2 hours, increased rapidly during the middle 4 hours (2 to 6h), slowly decreased during the last 2 hours (6-8 h). The oxygen increasing for 8 hours continuously could solve the problem of low dissolution of oxygen in nights. The COD and NO2--N in the water reduced gradually after the 7 day- cycle of oxygen increasing. The concentration of NO2--N decreased from 0.025mg/L to 0.013mg/L, and the concentration of COD decreased from 18.46mg/L to 14.15mg/L. The concentration of DO in the water decreased along with the distance from the pipe. The concentration of DO remained at a high level at the distance from 1-2 m. The concentration of DO at the distance from 3~4m decreased slowly(having no significant difference with the concentration at the distance from 1-2 m: P＞0.05) with the value remaining at 5.22mg/L, while it decreased dramatically at the distance far from 5m (having a significant difference with the concentration at the distance from 1~ 2m: P＜0.05). All the results indicated that by micropore aerators, the concentrations of DO, NO2--N and COD in the water increased efficiently; the proper time for oxygen increasing were 6~8h and the suitable pipe spacing is 6~8m.

Key words: Apostichopus japonicus, micropore aerator, DO, COD, NO2--N

摘要： 为明确刺参养殖池塘中微孔增氧的效果以及增氧管的布设间距、增氧时间对水体溶氧的影响，研究测定了在夏季刺参养殖池塘一个增氧周期内（每天23:00—7:00增氧8 h，7 d一个周期）水体中溶氧(DO)、亚硝酸盐(NO2--N)、COD的变化。结果显示，连续充气增氧的8 h内DO持续增加，增氧2 h上升速率缓慢，增氧2~6 h 上升速率迅速提高，增氧6~8 h 上升速率下降，连续充气8 h能够显著改变夜间溶氧降低现象；增氧7 d时间内，NO2--N和COD持续下降，分别由0.025 mg/L下降到0.014 mg/L、18.46 mg/L下降到14.15 mg/L。对充氧管道不同距离处DO的测定结果表明，距离增氧管1~2 m处DO较高，3~4 m处缓慢下降，与1~2 m处差异不显著（P＞0.05），DO保持在5.22 mg/L左右，距离5 m以上时DO下降速度较快，与1~2 m处差异显著（P＜0.05）。研究表明，微孔增氧可以明显增加水体DO，减少COD、NO2--N；微孔增氧机充氧时间6~8 h效果较好；微孔增氧管之间的布设距离在6~8 m可以实现高效增氧。