摘要
本研究选用二个抽穗期相近而结实率差别较大的水稻品种进行试验。结果表明：（１）谷粒的灌浆速率，高结实率品种比低结实率品种快；谷粒的灌浆持续期，高结实率品种比低结实率品种短。（２）水稻的粒叶比和抽穗后营养器官中的干物质输出率，低结实率品种比高结实率品种高。（３）水稻结实期剑叶的光合速率和主要生育时期叶片硝酸还原酶活力，低结实率品种比高结实率品种高。
In this experiment,two rice cultivars,similar in heading date and different insetting percentage were used. The results are as follows: ①Growth rate of grains wasfaster in a high setting percentage cultivar than that in a low setting percentage cultivar;growth stage of grains was shorter in a high setting percentage cultivar than that in alow setting percentage cultivar. ②Grain-leaf ratios of rice cultivars and transfer percentage of dry matter in vegetative organs after heading were higher in a low setting percentage cultivar than that in a high setting percentage cultivar. ③Photosynthetic rate oftop leaf blades during grain-filling phase and NR vigor of leaf blades were higher in alow setting percentage cultivar than that in a high setting percentage cultivar.
出处
《山东农业大学学报（自然科学版）》
CSCD
1996年第3期259-263,共5页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
灌浆速率
光合速率
水稻
结实率
growth rate of grains
photosynthetic rate
rice
setting percentage
