【摘要】 本文研究了优质稻双竹粘和杂交稻威优64的物质生产与产量因子的关系,得到如下主要结果:(1)每亩穗数与分化前的物质生产量密切相关,每穗粒数与分化—齐穗期的物质生产量密切相关。(2)结实率与每颖花的灌浆量呈正相关,但是双竹粘的结实率可能主要取决于每颖花齐穗后生产的灌浆量,威优64则可能主要取决于每颖花齐穗前运转的灌浆量。(3)双竹粘的千粒重主要取决于颖花的容量,而威优64主要取决于灌浆程度.更多还原

【Abstract】 The relationship between dry matter production and yield factors of goodquality rice“Shuang-Zhu-Zhan”and hybrid rice“Wei-You-64”was studied,the results obtained were as follows:(1)The number of panicles per mu has close correlation With the amountof dry matter production before panicle initiation,the number of spikeletsper panicle has close correlation with the amount from panicle initiation toheading.(2)There was positive correlation between the setting perecentage andthe amount of filling materials per spikelet,but the setting perecentage of“Shuang-Zhu-Zhan”may depend mainly on the amount of filling materials p-roduced per spikelet after heading,of“Wei-You-64”may mainly on the amo-unt of filling materials translocated per spikelet before heading.(3)The 1000-grains-weight of“Shuang-Zhu-Zhan”mainly depends on thebulk of spikelct,but of“Wei-You-64”mainly on the filling level.更多还原