播期插期秧龄对机插稻黄华占产量性状的影响

为探讨播期插期秧龄对机插稻黄华占产量性状的影响，2020年在陕西省城固县五爱村开展了油菜茬机插稻黄华占的研究。结果表明：秧田播期相同条件下，随着大田插期提前秧龄缩短，水稻产量增加；插期相同条件下，随着秧田播期提前秧龄延长，水稻产量显著增加或增加，秧田播期比秧龄对产量影响大，后期秧龄对产量影响增加；秧龄相同条件下，随着秧田播期大田插期提前，水稻产量显著增加或增加。秧田适期早播长秧龄的大穗，大田适期早插多穗。

Effects of Sowing Date, Transplanting Date, and Seedling Age on Yield Characteristics of Machine-transplanted Rice (Huanghuazhan)

This study aimed to investigate the effects of sowing date, transplanting date, and seedling age on the yield characteristics of machine-transplanted rice Huanghuazhan. An experiment was conducted in 2020 in Wuai village of Chenggu County in Shaanxi Province. Results showed that rice yield increased and seedling age decreased with the advancement of transplanting date under the same sowing date. Moreover, under the same transplanting date, longer seedling age significantly increased or increased rice yield with the advancement of sowing date. Sowing date had a better effect than seedling age, but the seeding age had an increasing effect on yield at the late growth stage. Additionally, under the same seedling age condition, rice yield significantly increased or increased with the advancement of sowing date and trans planting agesang. In conclusion, suitable early sowing can result in longer and better spikes, while suitable early transplanting can result in more spikes.