不同秧龄对杂交新稻浙优18的影响

[目的]为了研究杂交水稻新组合浙优18的适宜秧龄.[方法]通过相同播期、不同秧龄移栽处理,调查其对浙优18的生育期及产量影响.[结果]浙优18的始穗期、齐穗期随秧龄增长而延迟,并对分蘖及成穗产生较大影响,同时秧龄影响浙优18的叶龄增长动态,尤其在生育早期表现为秧龄长叶龄指数增长慢.但在秧龄45d范围内,对产量未造成较大影响.[结论]浙优18秧龄弹性较好,有利于大面积推广生产.

Effects of Different Seedling Age on Zheyou 18

[Objective] The aim was to study the suitable seedling age of new hybrid rice variety Zheyou 18.[Method] The influence of same sowing date and different seedling age on growth stage and yield of Zheyou 18 was investigated.[Result] The results showed that the initial heading stage,full heading stage of Zheyou 18 were delayed with the increasing of seedling age,and tiller and effective panicle rate were also affected.Simultaneously,seedling age influenced leaf age increasing dynamic of Zheyou 18,especially slowed down when at the early growth stage.But when the seedling age was less than 45 days,yield of Zheyou 18 was little influenced.[Conclusion] The study indicated that the seedling age range of Zheyou 18 was wide,which is favorable to large-scale production.