超级晚稻新组合农艺性状比较分析

目的]为南昌市乃至江西省超级晚稻的推广应用提供参考依据。方法]对3个超级晚稻新组合(丰源优299、天优998、淦鑫688)与金优桂99的产量、生育期等进行比较分析。结果]3个超级晚稻新组合较金优桂99产量均有极显著增加(P<0.01),且丰源优299>天优998>淦鑫688;全生育期丰源优299为114 d,天优998为119 d,淦鑫688为121 d,分别较CK短4 d,长1 d,长3 d;3个超级晚稻株叶形态好,茎秆粗壮,耐肥抗倒性好。结论]丰源优299应列为江西省首推超级晚稻,中迟熟超级晚稻天优998、淦鑫688宜结合早熟早稻茬口合理安排,在晚稻生产中示范推广。

Comparative Analysis of Agronomic Characters of New Super Late Rice Combinations

Objective] The aim of this study was to provide references for the popularization and application of super late rice in Nanchang City even Jiangxi Province.Method] Comparative analysis of yield,growth period and other characters between 3 new super late rice combinations(Fengyuanyou 299,Tianyou 998,Ganxin 688)and Jinyougui 99 was conducted.Result] The yields of the 3 new super late rice combinations were significantly higher than that of Jinyougui 99(P<0.01),and the order was as follows:Fengyuanyou 299> Tianyou 998>Ganxin 688.The whole growth period of Fengyuanyou 299 was 114 d,which was 4 days shorter than that of Jinyougui 99,and those of Tianyou 998 and Ganxin 688 were 119 and 121 d,which were 1 and 3 days longer than Jinyougui 99 respectively.The 3 new super late rice combinations had big panicles with more grains,good plant type,sturdy stem,high fertility tolerance and lodging resistance.Conclusion] Fengyuanyou 299 should be highly recommended for popularization in Jiangxi Province,while medium-late maturing super late rice Tianyou 998 and Ganxin 688 were suitable to be demonstrated and popularized in late rice production through reasonable arrangement combining with early-maturing early rice.