Soil cultivations are widely being replaced by soil-less methods for growing plants in greenhouses. In the present study, we compared the normalized water productivity (WP*) of lettuce plants under soil and hydroponic cultivation methods. Furthermore, the AquaCrop model was assessed for the simulation of yield and water productivity (WP) of lettuce in the soil and hydroponic cultivation methods. Productivity parameters of normalized water were different for the soil and hydroponic cultivations. The AquaCrop model was applied using 14.3 and 15.8 g m⁻², respectively, as obtained for WP* for soil and hydroponic cultivation methods in the first cultivation. Biomass was simulated during the growth period and was compared with the measured data from the first cultivation. The results indicated that the AquaCrop model simulates the performance of lettuce with a remarkable accuracy during the growth period using the calibrated values of WP*. In both cultivations, WP was also measured and simulated for the plants grown with the hydroponic and soil cultivation methods. WP of plants cultured in the hydroponic system was higher than the WP of soil-grown plants. Canopy cover was measured for both cultivation methods and was simulated by the model. The model simulated the canopy covers remarkably well for both cultivation methods (coefficient of determination R² > 0.95). Therefore, this model can be considered reliable in investigating the effect of cultivation methods on WP and biomass in lettuce plants.

中文翻译：

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使用 AquaCrop 软件比较水培和土壤栽培中的水生产力和作物性能*

土壤栽培正在被在温室中种植植物的无土方法广泛取代。在本研究中，我们比较了土壤和水培栽培方法下莴苣植物的标准化水分生产力 (WP*)。此外，还评估了 AquaCrop 模型以模拟土壤中生菜的产量和水分生产率 (WP) 和水培栽培方法。对于土壤和水培栽培，标准化水的生产力参数是不同的。AquaCrop 模型使用 14.3 和 15.8 g m ^-2，分别为在第一次栽培中获得的土壤和水培栽培方法的 WP*。在生长期模拟生物质，并与第一次栽培的测量数据进行比较。结果表明，AquaCrop 模型使用 WP* 的校准值以显着的精度模拟了生菜在生长期的性能。在这两种栽培中，还测量和模拟了用水培和土壤栽培方法种植的植物的 WP。水培植物的WP高于土栽植物的WP。测量了两种栽培方法的冠层覆盖率，并通过模型进行了模拟。该模型模拟了两种栽培方法的冠层覆盖率（测定系数R ² > 0.95)。因此，该模型在研究栽培方法对莴苣植物 WP 和生物量的影响方面可以被认为是可靠的。