This study focused on the effect of silicon nanoparticles (Si-Nps) use on growth and water use efficiency (WUE) of tomato in hydroponic cultivation under drought stress. Experimental treatments included full irrigation, supplying 85 and 70% of crop water requirement (I₁₀₀, I₈₅ and I₇₀) and use of Si-Nps in three levels of 0, 50 and 100 ppm (N₀, N₅₀ and N₁₀₀) which was performed in a completely randomized design with three replications. Si-Nps were applied in two ways: leaf feeding (L) and root feeding (R). Data analysis showed that different levels of irrigation, Si-Nps and the interaction effect of theirs had a significant effect on fruit weight, leaf fresh and dry weight, stem fresh weight and WUE at 1% level. Si-Nps had a significant effect on stem dry weight at 1% and fruit sugar at 5%. The interaction effect of irrigation and Si-Nps had a significant effect on stem dry weight and fruit sugar at 1%. The maximum fresh fruit weight was related to treatment I₈₅LN₁₀₀ and compared to the control treatment, it was 7.9% more. The maximum WUE was observed in I70RN50 treatment, which was 56.3% higher than control treatment. Generally, applying irrigation I₇₀RN₅₀ gives the best result for hydroponic tomato cultivation in greenhouse conditions.

本研究重点研究了干旱胁迫下水培番茄中硅纳米颗粒（Si-Nps）的使用对生长和水分利用效率（WUE）的影响。实验处理包括充分灌溉，提供作物需水量的 85% 和 70%（I ₁₀₀ 、I ₈₅和 I ₇₀ ），并使用 0、50 和 100 ppm 三个水平的 Si-Nps（N ₀ 、N ₅₀和 N _100） ）这是在完全随机设计中进行的，并进行了三次重复。 Si-Nps 以两种方式施用：叶饲（L）和根饲（R）。数据分析表明，在1%水平上，不同灌溉水平、Si-Nps及其交互作用对果实重、叶鲜干重、茎鲜重和WUE有显着影响。 Si-Nps在1%时对茎干重有显着影响，在5%时对果实糖分有显着影响。灌溉与Si-Nps的交互作用对茎干重和果实糖分有显着影响（1%）。最大鲜果重与处理I ₈₅ LN ₁₀₀有关，与对照处理相比，增加了7.9%。在 I70RN50 处理中观察到最大 WUE，比对照处理高 56.3%。一般来说，在温室条件下进行水培番茄种植时，采用 I ₇₀ RN ₅₀灌溉可获得最佳效果。