营养供应系统及其对尼罗罗非鱼（Oreochromis niloticus）和生菜（Lactuca sativa）植物整合系统性能的影响。
Nutrient supply systems and their effect on the performance of the Nile Tilapia (Oreochromis niloticus) and Lettuce (Lactuca sativa) plant integration system.
机构信息
Agricultural and Biosystems Engineering Department, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Toukh, Kalubia, Egypt.
Basic and Applied Science Department, College of Engineering and Technology, Arab Academy for Science and Technology and Maritime Transport (AASTMT), P.O. Box 2033, Cairo, Egypt.
出版信息
Sci Rep. 2024 Feb 20;14(1):4229. doi: 10.1038/s41598-024-54656-y.
The main aim of this work is to study the effect of different nutrient supply systems and their effect on the performance of the Nile Tilapia (Oreochromis niloticus) and Lettuce (Lactuca sativa var. crispa) plant integration system. To achieve that, five treatments having different culture systems (T1: Aquaculture (control), T2: Hydroponics (standard requirement: N = 210, P = 31, K = 234, Mg = 48, Ca = 200, S = 64, Fe = 14, Mn = 0.5, Zn = 0.05, B = 0.5, Cu = 0.02 and Mo = 0.01 ppm), T3: Aquaponics without nutrients addition, T4: Aquaponics with supplementary nutrients (KNO, 101 g L, KHPO, 136 g L, Ca(NO), 236 g L, MgSO, 246 g L, KSO, 115 g L and chelates for trace elements) in water (EC is 800 ppm) and T5: Aquaponics with supplementary nutrients spray on plants) were carried out. The previous systems were operated at three flow rates, namely, 1.0, 1.5 and 2.0 L h plant. The various water quality parameters, plant growth and fish growth were studied. The result indicated that the highest values of N, P, k, Ca and Mg consumption rate were found with T2 and 1.5 L h plant of flow rate. The root length, fresh and dry of shoot and root for lettuce plants grown in T2 system was better than those grown in different culture system (T3, T4 and T5). Different culture systems showed significant effect on fish growth in terms of weight gain, specific growth rate and feed efficiency ratio. Higher growth rate was observed in treatment T3 as compared to other treatments. The production costs ranged from 2820.5 to 4885.4 LE ($ = 30.92 LE) for all culture systems.
这项工作的主要目的是研究不同养分供应系统及其对尼罗罗非鱼（Oreochromis niloticus）和生菜（Lactuca sativa var. crispa）植物整合系统性能的影响。为此，采用了五种不同的养殖系统处理方法（T1：水产养殖（对照），T2：水培（标准要求：N = 210，P = 31，K = 234，Mg = 48，Ca = 200，S = 64，Fe = 14，Mn = 0.5，Zn = 0.05，B = 0.5，Cu = 0.02 和 Mo = 0.01 ppm），T3：不加养分的水培-水产养殖系统，T4：在水中添加补充养分（KNO，101 g L，KHPO，136 g L，Ca(NO)，236 g L，MgSO，246 g L，KSO，115 g L 和微量元素螯合物）的水培-水产养殖系统（EC 为 800 ppm）和 T5：向植物喷洒补充养分的水培-水产养殖系统）。先前的系统在三种流速下运行，即 1.0、1.5 和 2.0 L h 植物。研究了各种水质参数、植物生长和鱼类生长情况。结果表明，在 T2 和 1.5 L h 植物流速下，N、P、K、Ca 和 Mg 的消耗率最高。在 T2 系统中生长的生菜植物的根长、茎和根的鲜重和干重均优于其他培养系统（T3、T4 和 T5）。不同的养殖系统对鱼类的生长有显著影响，表现在增重、特定生长率和饲料效率比上。与其他处理相比，T3 处理的生长速度更高。所有养殖系统的生产成本在 2820.5 到 4885.4 埃镑（$ = 30.92 埃镑）之间。
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