籼粳亚种间杂交水稻高产高效栽培技术途径分析

为追一步明确籼粳亚种间杂交水稻高产高效栽培技术途径，本文分析了不同产量水平下，籼粳亚种间杂交水稻作单季晚稻栽培的穗、粒、重结构，利用相关、回归及通径分析的方法，研究提出了单季杂交晚稻籼粳亚种间杂交水稻高产高效栽培的技术途径：在保证有一定有效穗数的基础上，主攻每穗实粒数，适当兼顾粒重。

Analysis of high yield and efficiency technique in intersubspecific hybrid rice

Aiming at elucidating the high yield and efficiency technique in intersubspecific hybrid rice, the constitutions of panicle, grain and grain weight of intersubspecific hybrid rice as single cropping late rice in different yield levels were used to make correlation analysis, multiple regression analysis and path analysis between yield traits and yield. Then the high-yielding and high-resulting planting techniques were promoted as follows： Based on certain number of effective panicle and large panicles should be put emphasis on, at the same time, grain weight should be taken into consideration.