| Using the common bean cultivar 'Xianxingzhe' as the experimental material, this study investigated the effects of two plug tray sizes and five seedling ages on seedling growth parameters, pod traits, and yield across 10 treatment combinations. The aim was to identify the optimal combination of plug tray size and seedling age for nursery cultivation. The findings are intended to provide a theoretical basis for industrialized seedling production and high-efficiency cultivation of common bean.The results showed that, under the same seedling age, the 32-cell plug tray significantly improved root-to-shoot ratio, seedling vigor index, and G value compared to the 50-cell tray, indicating superior seedling quality.At the same plug tray size, 15-day-old seedlings showed superior quality compared to those aged 10, 20, 25, or 30 days.When combining plug tray size and seedling age, the 32-cell tray and 15-day-old seedlings produced the highest seedling vigor index (1.14), root activity (1.06 mg/g·h), and yield (21.91 kg/5 m2), representing a 46.36% increase compared to the control.Therefore, the combination of a 32-cell plug tray and 15-day seedling age is recommended for common bean nursery production, as it ensures high seedling quality, significantly enhances yield, and improves economic returns. |
