The stress-mitigating effect promoted by silicon is well documented, but considering nutritional stress due to deficiency, which is common in plants, there is still a shortage of prominent research on vegetables, such as basil. Our objective was to verify the role of silicon (Si) in basil plants grown in hydroponics with complete nutrient solution and with the individual omission of N, K and S. The treatments were four nutrient solutions (complete nutrient solution (CS), without N, without K and without S) × two Si (absence and presence of 2 mmol L^-1) × 4 replications in a completely randomized design. The evaluations performed were determination of the accumulation of Si, N, K and S, the use efficiency of N, K and S and the visual diagnosis of the deficiency of these nutrients. Under N deficiency, there was no effect of Si on N accumulation, N use efficiency or the dry mass of the plants. In plants deficient in K, Si improved K use efficiency and, consequently, shoot and root dry mass and mitigated the visual symptoms of K deficiency. With S deficiency, Si increased S accumulation, its use efficiency and consequently the shoot and root dry mass. In conclusion, these results indicate that Si did not mitigate the damage caused by severe N deficiency but that it did attenuate the damage caused by K and S deficiency by increasing the use efficiency of these nutrients.

硅对缓解压力的作用已得到充分证明，但考虑到由于缺乏导致的营养压力，这在植物中很常见，对罗勒等蔬菜的研究仍然不足。我们的目标是验证硅 (Si) 在使用完全营养液和单独省略 N、K 和 S 的水培法种植的罗勒植物中的作用。 处理是四种营养液（完全营养液 (CS)，不含 N , 无 K 且无 S) × 2 Si（不存在和存在 2 mmol L ^-1) × 4 个完全随机设计的重复。所进行的评估是测定 Si、N、K 和 S 的积累、N、K 和 S 的利用效率以及这些营养素缺乏的视觉诊断。在N缺乏情况下，Si对N积累、N利用效率或植物干重没有影响。在缺钾的植物中，Si 提高了钾的利用效率，从而提高了地上部和根的干重，并减轻了缺钾的视觉症状。随着 S 的缺乏，Si 增加了 S 的积累，提高了它的利用效率，从而增加了地上部和根部的干重。总之，这些结果表明，Si 并没有减轻严重 N 缺乏造成的损害，但它确实通过提高这些养分的利用效率来减轻 K 和 S 缺乏造成的损害。