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对闽泉 2号株型特征和光合特性的研究结果表明 ,高产水稻品种的株型特征是根系发达、活力强 ,株高 10 0 cm左右 ,茎秆粗壮抗倒伏 ,冠层叶片挺直 ,分蘖力中等偏强。群体繁茂而不荫蔽。其高产的主要原因是叶面积指数大 (齐穗期达 7左右 ) ,群体生长率高 ,干物质积累总量多 ;库容量大 ,即单位面积具有较多的总粒数和较大的粒重 ;经济系数高 (0 .55左右 ) ,器官输出率和表观转变率高。并从库源关系的角度 ,对水稻高产育种的途径作了讨论
The results of plant type characteristics and photosynthetic characteristics of Minquan No.2 showed that the plant type characteristics of high yielding rice cultivars were well-developed root system, strong vigor, plant height about 10 cm, stems stout and lodging resistant, canopy leaves upright, tillers Moderately strong. Lush population without shading. The main reason for its high yield is the large leaf area index (full heading stage of about 7), the population growth rate is high, the total amount of dry matter accumulation; library capacity, that is, the unit area has more total grain number and larger grains Heavy; economic coefficient is high (about 0.55), organ output rate and apparent transformation rate is high. From the perspective of the relationship between source and sink, the ways of high-yielding rice breeding were discussed