A Balanced Sowing Density Improves Quality of Rapeseed Blanket Seedling

Mechanized transplanting of rapeseed (Brassica napus L.) blanket seedling is an effective strategy to cope with the seasonal conflict and large labor cost in production. The sowing density a key factor cultivate high-quality seedlings suitable for mechanized transplanting. An experiment was conducted investigate effects different levels 638, 696, 754, 812, 870 928 seeds per tray (referred as D1, D2, D3, D4, D5 D6, respectively) on agronomic traits survival rate after two cultivars (Zheyouza108 Heza17) 2020 2021. results showed that high increased plant height but decreased leaf area, collar diameter, biomass accumulation, ratio root shoot fullness. These negative jointly However, under D1 D2 posed great more than 95% transplanting, suggesting densities were perfect In addition, hierarchical analysis grouped into same class, indicating their qualities not significantly different, though outperformed those some traits. A 696 (D2) then recommended this study, altogether considering its economically, fewer trays required.