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刘国锋, 徐增洪, 朱光艳, 水燕, 何俊, 张宪中. 大棚繁育克氏原螯虾种苗对养殖水体营养盐的影响[J]. 水生生物学报, 2023, 47(12): 1909-1917. DOI: 10.7541/2023.2021.0144
引用本文: 刘国锋, 徐增洪, 朱光艳, 水燕, 何俊, 张宪中. 大棚繁育克氏原螯虾种苗对养殖水体营养盐的影响[J]. 水生生物学报, 2023, 47(12): 1909-1917. DOI: 10.7541/2023.2021.0144
LIU Guo-Feng, XU Zeng-Hong, ZHU Guang-Yan, SHUI Yan, HE Jun, ZHANG Xian-Zhong. BREEDING PROCAMBARUS CLARKII SEEDLINGS IN GREENHOUSE ON NUTRIENTS IN AQUACULTURE WATER[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(12): 1909-1917. DOI: 10.7541/2023.2021.0144
Citation: LIU Guo-Feng, XU Zeng-Hong, ZHU Guang-Yan, SHUI Yan, HE Jun, ZHANG Xian-Zhong. BREEDING PROCAMBARUS CLARKII SEEDLINGS IN GREENHOUSE ON NUTRIENTS IN AQUACULTURE WATER[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(12): 1909-1917. DOI: 10.7541/2023.2021.0144

大棚繁育克氏原螯虾种苗对养殖水体营养盐的影响

BREEDING PROCAMBARUS CLARKII SEEDLINGS IN GREENHOUSE ON NUTRIENTS IN AQUACULTURE WATER

  • 摘要: 为探讨利用温室大棚进行克氏原螯虾(Procambarus clarkia)种苗繁育对养殖水体的水质影响, 文章通过对繁育期间的水样和表层底泥营养盐的定期监测, 研究了整个育苗期间水质和表层底泥中营养盐的变化动态。结果表明, 水体DO、WT变幅为5.75—6.33 mg/L、12.6℃—22.9℃, 水温要高于同期外部水温5—10℃; 受饲料投喂和虾活动等影响, 上覆水中TN、TP和COD含量快速增加, 在养殖期间的变幅分别为2.091—2.688、0.196—0.480和42.400—53.200 mg/L; 表层底泥的TN、TP和有机质含量变幅分别为1032—1279、623—1004 和12.00—14.28 mg/kg, 其增幅分别为24%、23%和41%。受水体浊度较高、水体中亲本虾数量不明等影响, 无法判定投入的饲料是否全部为虾子摄食, 造成了短期内较高的饲料投入量带来养殖水体营养盐的急剧增加, 较高的营养盐含量为后期养殖尾水的治理带来新的要求。

     

    Abstract: The rapid increase of nutrients and the decline of aquaculture water quality often occur in the process of aquaculture. It is necessary to carry out systematic research on the effect of severe human and biological disturbance on the water quality of aquaculture water by using greenhouse to breed Procambarus clarkii seedlings. To explore the water quality, this study measured the dynamic changes of water quality and nutrients in surface sediment of the high-density breeding of crayfish seedlings in greenhouse in winter. The results showed that the DO and WT of the water body varied from 5.75 to 6.33 mg/L and 12.6℃—22.9℃, respectively, and the water temperature was 5—10℃ higher than the external water temperature in the same period. The contents of TN, TP and COD were 2.091—2.688, 0.196—0.480 and 42.400—53.200 mg/L in the overlying water, respectively, which were relatively higher due to feeding and shrimp activities. The contents of TN, TP and organic matter in surface sediment ranged from 1032 to 1279, 623 to 1004 and 12.00 to 14.28 mg/kg, with an increase of 24%, 23% and 41%, respectively. Due to the high turbidity of the water body and the unknown number of parent shrimp in the water body, it is impossible to determine whether all the feed was consumed by shrimp and the rapid increased nutrients in the aquaculture water due to the more feed. The high nutrient content brings new requirements for the treatment of the aquaculture tail water in the later stage.

     

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