Recently, nano-fertilizers and triazoles have been employed in agriculture as a new strategy to reduce the unfavorable effects of water stress. Thus, this study aimed to assay the role of nano-silicon and tebuconazole on sugar yield and root impurities under normal and drought stress conditions. The experiment was performed as a split-plot factorial experiment based on a randomized complete block design with three replications during two consecutive seasons (2016 and 2017). The treatments which included three levels of irrigation regime were carried out as the main plot including 100%, 75%, and 50% sugar beet evapotranspiration (ET_s), and factorial combination of tebuconazole (0 mg L⁻¹ and 25 mg L⁻¹) and nano-silicon (0 mM, 1 mM, and 2 mM) were implemented as a subplot. Severe water deficiency had deleterious effects on yield, root quality, and physiological traits. However, under severe water stress, nano-silicon at 1 mM significantly decreased root α-amino nitrogen and sodium contents by 32% and 43% in 2016 and 25% and 37% in 2017, respectively, compared to the control treatment. In contrast, nano-silicon and tebuconazole significantly increased leaf relative water content, root calcium content, and sugar yield. In general, under severe water stress conditions, the significant effects of nano-silicon on sugar yield are due exclusively to improved root quality traits (especially α-amino nitrogen and sodium contents). Besides, the findings provide data that nano-silicon and tebuconazole might have a high potential for profitable sugar production under water stress.

最近，纳米肥料和三唑已被用于农业，作为减少水分胁迫不利影响的新策略。因此，本研究旨在测定纳米硅和戊唑醇在正常和干旱胁迫条件下对糖产量和根杂质的作用。该实验是基于随机完整区组设计的裂区因子实验，在连续两个季节（2016 年和 2017 年）进行了三个重复。以100%、75%和50%甜菜蒸散量（ET _s）和戊唑醇（0 mg L ^-1和25 mg L ^{- 1}) 和纳米硅 (0 mM、1 mM 和 2 mM) 作为子图实施。严重缺水会对产量、根系质量和生理性状产生有害影响。然而，在严重的水分胁迫下，与对照处理相比，1 mM 纳米硅在 2016 年和 2017 年分别显着降低了根 α-氨基氮和钠含量 32% 和 43%，分别降低了 25% 和 37%。相比之下，纳米硅和戊唑醇显着增加了叶片相对含水量、根钙含量和糖产量。一般来说，在严重的水分胁迫条件下，纳米硅对糖产量的显着影响完全是由于根质量性状的改善（尤其是α-氨基氮和钠含量）。除了，