PDF(Pubmed)
Abstract：
A major challenge in agriculture, horticulture and aquaponics practices is the reduction of mineral fertilisers and peat to reduce CO2 emissions and increase sustainability. This study used a three-phase-natural fertiliser, the Humicacid Fiber-Substrate (HFS), made from natural regenerative organic and mineral-fractions (Humus-Mineral-Complex), to reduce the peat content in plant pots for aquaponics farming. Basil (Ocimum basilicum) growth was compared with i) 100% standard media substrate (\"Einheitserde\", white peat 80%, clay 20%), and ii) 85% \"Einheitserde\" and 15% of HFS under irrigation with aquaculture process waters from an extensive and intensive production of African catfish (Clarias gariepinus) under coupled aquaponic conditions. The substitution with 15% HFS and use of intensive fish water resulted in comparable plant growth to a fertiliser solution as control, and in higher leaf width and leaf green weight and lower root dry weight compared with the standard media substrate \"Einheitserde\". Basil leaf chlorophyll content from the aquaponics was higher compared with local market plants. This suggests the possible substitution of the peat substrate \"Einheitserde\" with at least 15% HFS to reduce the natural peat fraction. Further studies on crop-specific substrates are needed to reduce peat in aquaponics farming plant cultivation.
摘要：
农业的一大挑战,园艺和水产养殖实践是减少矿物肥料和泥炭，以减少CO2排放并提高可持续性。这项研究使用了三相天然肥料，腐植酸纤维基质（HFS），由天然再生有机和矿物馏分（腐殖质矿物复合物）制成，减少水培养殖花盆中的泥炭含量。罗勒（罗勒）生长与i）100％标准培养基底物（“Einheitserde”，白色泥炭80%,粘土20%)，和ii）85％的“Einheitserde”和15％的HFS在水产养殖过程中灌溉，这些过程来自在耦合的水产养殖条件下广泛而密集地生产的非洲cat鱼（Clariasgariepinus）。用15％HFS代替并使用密集的鱼水导致植物生长与作为对照的肥料溶液相当。与标准培养基底物“Einheitserde”相比，叶片宽度和叶绿重量较高，根干重较低。与当地市场植物相比，水菜植物中的罗勒叶片叶绿素含量更高。这表明可能用至少15％的HFS取代泥炭底物“Einheitserde”以减少天然泥炭分数。需要对作物特异性底物进行进一步研究，以减少水培耕作植物种植中的泥炭。
