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[目的]进一步明确和发挥杂交水稻‘中浙优8号’的增产增效潜力。[方法]利用相关、回归和通径分析方法分析了不同产量水平下‘中浙优8号’的产量结构,探讨了各产量构成因子间的内在联系和对产量贡献的大小。[结果]‘中浙优8号’各主要经济性状对产量的效应大小排序为:每穗实粒数、有效穗、粒重、每穗总粒数。[结论]研究提出‘中浙优8号’高产高效栽培应在确保一定穗数的基础上,主攻每穗实粒数,兼顾粒重。
[Objective] To further clarify and exert the potential of increasing yield and increasing efficiency of hybrid rice “Zhongzheyou 8”. [Method] The yield structure of ’Zhongzheyou 8’ under different yield levels was analyzed by correlation, regression and path analysis methods. The internal relations among the yield components and the contribution to the yield were discussed. [Result] The order of the effects of the main economic traits of ’Zhongzheyou 8’ on yield was as follows: the number of real grains per panicle, the effective panicle, the grain weight and the total grain number per panicle. [Conclusion] The study proposed that ’Zhongzheyou 8’ high yield and high efficiency cultivation should ensure a certain number of spikes on the basis of the main attack per panicle number, taking into account grain weight.