以籼粳杂交晚稻甬优9号为试验材料,研究了超秧龄移栽条件下,连作晚稻甬优9号的生育期、群体茎蘖动态、产量及其构成因素的变化。结果表明:超秧龄移栽对甬优9号的农艺性状和产量均有一定的影响,以秧龄39 d影响较小,其产量为566.9 kg/667m2,比35 d秧龄移栽时减产4.07%,且以每穗实粒数对产量的贡献最大。甬优9号作连作晚稻移栽秧龄最晚不宜超过40 d。 Taking late rice Yongyou 9 as indica - japonica hybrid rice as experimental material, the changes of stem tillering dynamics, yield and its components of late rice Yongyou 9 under continuous transplanting were studied. The results showed that transplanting super seedling had some effects on the agronomic characters and yield of Yongyou 9, with the effect of 39 days of seedling age was small, the yield was 566.9 kg / 667m2, 4.07% less than that of 35 days when transplanted. And the maximum number of grain yield per panicle on the largest contribution. Yongyou 9 for continuous cropping late rice transplanting seedling age should not exceed 40 d.