中浙优8号高产栽培技术分析(英文)

[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。

Approach to the Ways for High-yielding Technique of Zhongzheyou No.8

[Objective] The paper was focused on the way how to increase the yield of hybrid rice Zhongzheyou No.8. [Method] The relationship among yield-related traits and their contribution to yield were investigated through correlation analysis, regression analysis and path analysis. [Result] The performance of ear, grain and weight in Zhongzheyou No.8 showed significant difference among yield levels. The enhancement of effective ears would restrain the number of total grains per ear. It was found that the direct contributions of main economic traits to yield were： number of fil ed grains per ear 〉 number of effective ears 〉1 000-grain weight 〉number of total grains per ear. [Conclusion] The promotion of high-yielding techniques was suggested as fol ows： on the basis of certain number of effective ears, number of fil ed grains per ear should be mainly focused with a consideration to grain weight.