关键词: 结球白菜, 种子, 恒定转速, 粉液比, 丸化种子质量, 发芽势

Abstract:

Using the seeds of “Qianbai No.2” Chinese cabbage (Brassica rapa subsp. pekinensis) as experimental materials, the effects of different powder-to-liquid ratios under constant rotation speed on the quality indices of pelleted Chinese cabbage seeds were explored. The results showed that with the increase of the powder-to-liquid ratio, the 1000-seed weight, compressive strength, and cracking time of the pelleted seeds gradually increased, while the breakage rate continuously decreased. As the powder-to-liquid ratio changed, the germination indices of the pelleted Chinese cabbage seeds showed a normal distribution characteristic of increasing first and then decreasing. When the powder-to-liquid ratio was 300:95, the seeds exhibited the highest single-seed rate and the lowest multi-seed rate. The pelleted Chinese cabbage seeds had the highest germination rate, germination potential, germination index, and vigor index, and the seedling growth indices also showed a normal distribution trend. For the pelleted Chinese cabbage seeds treated with the powder-to-liquid ratio of 300:95, on the seventh day after germination, root length, shoot length, dry weight, and fresh weight of the seedlings all reached the maximum values.

Key words: Chinese cabbage, Seed, Constant rotation speed, Powder-to-liquid ratio, Pelleted seed quality, Germination potential