杂交水稻‘甬优6号’高产高效技术途径分析

Analysis of High Yield and Efficiency Technique in Hybrid Rice ‘Yongyou 6'

为进一步发挥杂交水稻‘甬优6号’的增产增效潜力,论文利用相关、回归和通径分析方法分析了不同产量水平下单季杂交晚稻‘甬优6号’的产量结构,探讨了各产量因子间的内在联系和对产量贡献的大小。结果表明,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>结实率>粒重。研究提出单季杂交晚稻‘甬优6号’高产高效栽培的技术途径应是在确保高产所需有效穗数的基础上,主攻每穗实粒数,兼顾粒重。

In different yield levels,the constitutions of ear,grain and grain weight of‘ Yongyou 6 ＇ ,a single cropping late rice,were analyzed.Methods of correlation analysis,regression analysis and path analysis were used to analyze the relationship among traits and their contribution to yield.The results showed that the direct contributions of main economic characters to yield were determined to be per ear filled grains effective ear seed setting rate 1000-grain weight.The promotion of high-yielding and effective cultivation techniques was suggested as follows： on the basis of certain effective ear amount,filled grains per ear should be mainly focused with a consideration to grain weight.