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以汕优63为对照,研究了超高产杂交稻组合C两优396和C两优87的源、库、流特性。结果表明,C两优396和C两优87库容较大,填库能力强,单位面积总颖花量、叶面积指数和粒叶比均高于汕优63;抽穗后剑叶的净光合速率高,光合能力强;孕穗后光合产物积累速度快,增量大,抽穗后茎鞘叶干物质向籽粒运转量多,对籽粒的贡献率高;产量与总颖花量呈极显著正相关,与粒叶比和抽穗后干物质生产量呈显著正相关。库大、源强、流畅且三者之间能在较高水平上协调,是C两优396和C两优87超高产的主要成因。
Taking Shanyou 63 as control, the source, sink and flow characteristics of super high-yielding hybrid rice combination C Liangyou 396 and C Liangyou 87 were studied. The results showed that C Liangyou 396 and C Liangyou 87 had higher storage capacity, better filling capacity, total spikelet per unit area, leaf area index and grain-leaf ratio than Shanyou 63. The net photosynthetic rate High photosynthetic ability; booting photosynthate accumulation speed, increment, after heading stem dry matter to grain running more, the contribution rate to the grain is high; yield and total spikelets was significantly positive correlation, There was a significant positive correlation between grain-leaf ratio and dry matter production after heading. Large library, strong source, smooth and the three can be coordinated at a high level, C Liangyou 396 and C Liangyou 87 the main cause of ultra-high yield.