Both Si and Se are the nutrient elements which had significant effects on crop growth and development. However, the application of Si and Se fertilizer management in field production of fragrant rice (Oryza sativa L.) was rarely reported. The present study was conducted with the objective to explore the effects of Si and Se fertilizer on fragrant rice performance though a six‐season field experiment. The Se rates were set at three levels: 0 g ha⁻¹ (Se0), 36 g ha⁻¹ (Se1), and 72 g ha⁻¹ (Se2). The SiO₂ rates were set at three levels: 0 kg ha⁻¹ (Si0), 22.45 kg ha⁻¹ (Si1), and 45 kg ha⁻¹ (Si2). Compared with Si0Se0 treatment, Si and Se treatments significantly increased SPAD values and net photosynthetic rates of fragrant rice at tillering stage and heading stage. Higher grain yield, effectively panicle number and seed‐setting rate were also recorded in Si1Se1, Si1Se2, Si2Se1, and Si2Se2 treatments than Si0Se0 treatment in each cropping season. Moreover, Si and Se fertilizer management significantly increased the grain 2‐acetyl‐1‐pyrroline (2‐AP, main component of fragrant rice aroma) concentrations and the Si2Se1 treatment produced the highest or equally highest grain 2‐AP concentration in each cropping season.

中文翻译：

---

硅和硒肥管理提高了香米的生产力和香气

硅和硒都是对作物生长发育具有重要影响的营养元素。然而，很少有人报道了硅和硒肥料管理在香米（Oryza sativa L.）的田间生产中的应用。本研究旨在通过六个季节的田间试验来探索硅和硒肥料对香米性能的影响。硒率分别设定为三个级别：0克公顷^-1（SE0），36克公顷^-1（Se1的），和72克公顷^-1（SE2）。SiO ₂速率设定为三个水平：0 kg ha ^-1（Si0），22.45 kg ha ^-1（Si1）和45 kg ha ^-1（Si2）。与SiO 2 Se处理相比，Si和Se处理显着提高了分rice期和抽穗期香稻的SPAD值和净光合速​​率。在每个种植季节，Si1Se1，Si1Se2，Si2Se1和Si2Se2处理的籽粒产量，有效穗数和结实率也高于SiO0Se0处理。此外，Si和Se肥料管理显着提高了谷物2-乙酰基-1-吡咯啉（2-AP，香米香气的主要成分）的浓度，并且Si2Se1处理在每个种植季节产生了最高或同样最高的谷物2-AP浓度。 。