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中国农学通报 ›› 2019, Vol. 35 ›› Issue (1): 149-153.doi: 10.11924/j.issn.1000-6850.casb18060081

所属专题: 水产渔业

• 水产 渔业 • 上一篇    下一篇

扑草净用于仿刺参养殖塘的安全性研究 ──基于营养盐在生物沉积物-水界面扩散的视角

葛长字1, 张凯静2, 曲春风2   

  1. 1.山东大学(威海)海洋学院;2.山东大学威海海洋学院
  • 收稿日期:2018-06-19 修回日期:2018-08-26 接受日期:2018-09-25 出版日期:2019-01-02 发布日期:2019-01-02
  • 通讯作者: 葛长字
  • 基金资助:
    山东省自然科学基金“牡蛎壳粉对沉积物中氮磷的双向调节机制”(ZR2016CM06);山东省科技发展计划“复合污染海域组合式生物修复技 术研究”(2014GSF117042)。

Safe Utilization of Prometryne in Sea Cucumber Culture Pond: From Nutrient Diffusion Flux Across Biodeposition-water Interface Aspect

  • Received:2018-06-19 Revised:2018-08-26 Accepted:2018-09-25 Online:2019-01-02 Published:2019-01-02

摘要: 温带海域普遍养殖仿刺参,仿刺参养殖塘中常有大型藻类爆发,进而影响仿刺参的生长和生存。通常用扑草净清除大型藻类,由于除草剂的生态毒性,可推断扑草净将影响仿刺参生物沉积物中营养盐的再生,本研究则要验证该假说。将仿刺参生物沉积物暴露于不同浓度的扑草净7天,并测定生物沉积物-水界面营养盐的扩散通量。结果表明:在正常使用的去除大型藻类的扑草净剂量之下,营养盐在仿刺参生物沉积物-水界面的扩散通量不受扑草净的影响。按正常剂量使用扑草净并不影响仿刺参生物沉积物中营养盐的再生与积聚,无需对扑草净对营养盐水平的影响而担忧。研究结果将有助于评估除草剂对海水中营养盐循环的影响。

关键词: 水稻, 水稻, 两优616, 氮磷钾, 肥效, 施肥量

Abstract: Sea cucumber is cultured generally in temperate zone. Macroalgae may outbreak in sea cucumber culture ponds, which influence its survival and growth. Macroalgae are killed by prometryne generally. It is supposed that prometryne might affect the nutrients regeneration in biodeposition because of herbicide toxicity. To evaluate the hypothesis, the sea cucumber feces were exposed to prometryne with different concentrations for 7 days and the nutrients diffusion fluxes across the biodeposition-water interface were studied. The results showed that the nutrients diffusion fluxes across the biodeposition-water interface and the construction of nutrients released from the biodeposition were not influenced by prometryne of normal dosage used to control macroalgae, hence, the prometryne could not affect the regeneration/accumulation of nutrients in biodeposition. It is no necessary to worry about the utilization of prometryne in sea cucumber culture ponds. Results of the present work may shed light on evaluating effects of herbicide on nutrients cycle in seawaters.

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