School of Agricultural and Veterinarian Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo, 14884-900, Brazil.
Center of Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, São Paulo, 13400-970, Brazil.
Sci Rep. 2021 May 10;11(1):9893. doi: 10.1038/s41598-021-89416-9.
Recognizably, silicon has a beneficial effect on plant growth and productivity. In this respect, it is also known that the C, N and, P stoichiometric ratios and nutrient conversion efficiency allow identifying the interactions between elements while helping to understand the role Si plays in plant growth. This study aims to investigate whether increasing Si concentrations (0, 1, 2, and 3 mmol L) supplied in the nutrient solution is uptaken by quinoa, modifies the C:N:P stoichiometry while increasing nutritional efficiency and crop productivity as well. Our results revealed that the Si supply by promoting a decline in the C levels, associated with greater uptake of N and P, especially decreased the C:N and C:P ratios, favoring the C metabolism efficiency, and modulated the N and P use efficiency for biomass accumulation. This improved nutritional performance and greater use efficiency of C directly favored quinoa productivity. The future perspective is to encourage new field studies with this species to adjust silicon fertilization management to different soils aiming at enhancing quinoa productivity on a sustainable basis.
可以明显看出，硅对植物的生长和生产力有有益的影响。在这方面，人们也知道 C、N 和 P 的化学计量比和养分转化效率可以识别元素之间的相互作用，同时有助于了解 Si 在植物生长中的作用。本研究旨在调查在营养液中增加 Si 浓度（0、1、2 和 3 mmol L）是否被藜麦吸收，是否会改变 C:N:P 化学计量比，同时提高营养效率和作物生产力。我们的结果表明，Si 的供应通过促进 C 水平的下降，伴随着 N 和 P 的更大吸收，特别是降低了 C:N 和 C:P 比，有利于 C 代谢效率，并调节 N 和 P 的利用效率，促进生物量的积累。这种营养性能的提高和 C 的利用效率的提高直接有利于藜麦的生产力。未来的展望是鼓励对该物种进行新的田间研究，以调整硅肥管理，针对不同的土壤，旨在提高藜麦的生产力，实现可持续发展。
