ABSTRACT: The objective of this study was to trace the transformations of phosphorus in an integrated multitrophic aquaculture (IMTA) system and to determine whether the method of plant breeding influenced the dynamics of these changes. In the experiment, the media filled beds (MFB) method of plant cultivation was applied. Fish tanks were stocked with 200 common carp Cyprinus carpio, and hydroponic terraces were planted with 49 zantedeschia Zantedeschia sp. bulbs. Water samples were taken directly from the fish tanks immediately after each type of filtration (mechanical, biological and hydroponic). The basic forms of orthophosphates in the IMTA system included some H₂PO₄^- ions but mostly HPO₄^2-. The higher supply of reactive phosphorus that occurred over time in the experiment may have contributed to a decrease in calcium ion concentration due to the formation of Ca₃(PO₄)₂ and CaHPO₄ salts, thus inactivating some of the phosphorus available to plants. Phosphorus may have also been inactivated in the sediment due to the formation of Mg₃(PO₄)₂ and MgHPO₄ salts after decreasing the concentration of calcium ions as a result of their precipitation in sediments. Mineralization of organic matter took place under aerobic conditions. Organic matter was a source of biogenic substances in the IMTA system. Experimental results showed that IMTA systems have significant potential to reduce phosphorus in aquaculture wastewater and thus provide a good environment for fish farming by improving water quality.

中文翻译：

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在植物栽培中使用培养基填充床法在实验性综合多营养水产养殖系统中的磷转化

摘要：本研究的目的是追踪综合多营养水产养殖（IMTA）系统中磷的转化，并确定植物育种方法是否影响这些变化的动态。在实验中，应用了植物栽培的培养基填充床（MFB）方法。鱼缸放养鲤鱼Cyprinus carpio 200尾，水培梯田种植马蹄莲49株。灯泡。在每种类型的过滤（机械、生物和水培）后立即从鱼缸中直接采集水样。IMTA 系统中正磷酸盐的基本形式包括一些 H ₂ PO ₄ ^-离子，但主要是 HPO ₄ ^2-. 随着时间的推移，实验中活性磷的供应量增加可能导致钙离子浓度降低，这是由于形成 Ca ₃ (PO ₄ ) ₂和 CaHPO ₄盐，从而使植物可利用的一些磷失活。_{由于 Mg 3} (PO ₄ ) ₂和 MgHPO ₄的形成，沉积物中的磷也可能失活由于钙离子在沉积物中的沉淀而降低了钙离子的浓度。有机物的矿化发生在有氧条件下。有机物质是 IMTA 系统中生物物质的来源。实验结果表明，IMTA系统具有显着降低水产养殖废水中磷的潜力，从而通过改善水质为养鱼提供良好的环境。