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[目的]探索杂交水稻甬优9号高效栽培的有效技术途径,进一步发挥甬优9号的增产增效潜力。[方法]测定甬优9号44组产量性状数据,利用相关、回归和通径分析方法分析不同产量水平下单季杂交晚稻甬优9号的穗、粒、重结构,研究各因素间的内在联系和对产量贡献的大小。[结果]甬优9号不同产量水平的穗、粒、重均存在显著差异,有效穗与每穗总粒数是两个相互制约的产量因子,各产量因子作用于产量的效应大小依次为:每穗总粒数>有效穗>结实率>千粒重。[结论]稳定有效穗数、主攻每穗实粒数、适当兼顾千粒重,是实现单季杂交晚稻甬优9高产高效栽培的有效技术途径。
[Objective] The research aimed to explore effective technical ways for efficient cultivation of hybrid rice Yongyou 9 and further develop the potential of increasing yield and increasing efficiency of Yongyou 9. [Method] The data of yield traits in 44 combinations of Yongyou 9 were determined. Correlation, regression and path analysis were used to analyze the spike, grain and structure of single cropping late rice Yongyou 9 under different yield levels to study the internal Contact and size of contribution to production. [Result] The results showed that there existed significant differences in the spike, grain and weight of Yongyou 9 at different yield levels. The effective spike and the total grain number per spike were two mutually restricted yield factors. The effects of each yield factor on yield were as follows: Total grains per panicle> effective panicle> seed setting rate> 1000-grain weight. [Conclusion] It is an effective technical way to realize the high yield and high efficiency cultivation of Yyouyou 9, a late senescence hybrid rice.