【摘要】 为探讨水稻超高产育种和栽培调控的主攻方向，分析比较了不同时期主栽品种和杂交稻组合不同产量水平的产量构成和库源结构。试验结果表明，超高产水稻产量构成特征是具有足够的穗数和大穗；超高产育种的方向是稳定穗数，培育大穗，增加单位面积总粒数，并增强后期物质生产能力；超高产栽培应利用超高产品种的大穗优势，首先确保适应当地生态的足额的穗数，建立足穗大穗的巨库群体。文中就增加库容量和物质生产能力问题作了讨论。更多还原

【Abstract】 The yield components and structures of sink source at different grain yield levels in main cultivated varieties and hybrid combinations of rice in various periods were analysed and compared to study rice super high yield breeding and determine the main direction of genetically manipulating and culturally regulating the super high yield rice The results indicated:The structure character of super high yielding rice were sufficient panicle numbers and big panicles; The direction of super high yield breeding should focus on stabling panicle numbers, breeding big panicles, increasing the total grain numbers per unit area and enhancing rice productivity;Super high yielding culture should utilize the big panicle superiority of super high yielding rice varieties,firstly ensuring to get sufficent numbers of panicles suitable to local environment and then building a super sink rice population with ample larger panicles How to raise the sink capacity and materials productivity were also discussed.更多还原