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以代表性品种中粳武运粳8号和杂交中籼汕优63为材料,研究高产水稻株型与籽粒产量形成的关系。结果表明:高产水稻的株高在适宜范围内的上限,穗下节间较长,基部第1、2节间较短,穗下节间与秆长之比为32%～35%,茎生3叶叶角和弯曲度小,茎生5叶叶长配置合理;抽穗后高产株型势粒比为45.0～49.0cm2·粒-1。不同株型植株上部枝梗籽粒灌浆速率差异较小,中、下部枝梗籽粒灌浆速率差异较大。
A study was conducted to study the relationship between plant type and grain yield of representative japonica rice Wuyunjing 8 and medium - indica Shanyou 63. The results showed that the upper limit of the plant height of high yielding rice in the suitable range was longer, the internodes of spikelets were longer, the first and second internodes were shorter, the ratio of internodes to stalk was 32% -35% 3 leaf angle and curvature is small, stem 5 leaves long and reasonable configuration; high yield after heading strain-type ratio of 45.0 ~ 49.0cm2 · grain -1. The differences in grain filling rate of the upper branch stems between different plant types were small, while the grain filling rates of middle and lower branch stems differed greatly.