黑龙江省超高产水稻品种茎蘖发育动态研究

Dynamic Research of Tillers on High Yield Rice Varieties in Heilongjiang Province

为探讨黑龙江省超高产水稻品种的茎蘖发育动态优势,以黑龙江省的3个超级稻品种——‘松粳9号’、‘龙稻5号’和‘龙粳14’为试验材料,分别用相同生育期的普通品种‘藤系138’、‘龙稻3号’和‘合江19’作为对照,采用田间小区试验设计,对黑龙江省超高产水稻品种的茎蘖发育动态进行研究。结果表明,超高产品种相比较普通品种的优势在于,达到最高茎蘖数后,无效分蘖消亡速度慢,最终成穗率均高;产量与茎蘖各性状的相关关系均未达到显著状态,其中产量与最高茎蘖数、茎蘖增长速率、茎蘖消亡速率呈负相关关系,而与有效分蘖数、最终成穗率呈正相关关系。

To explore the superiority of dynamic growth of tillers of super high yield rice varieties in Heilongjiang Province, 3 super rice varieties, ‘ Songjing9＇, ‘ Longdao5＇ and ‘ Longjing14＇ were studied with plot trail in this experiment, and 3 common rice varieties, ‘Tengxi138＇,‘ Longdao3＇ and ‘ Hejiang19＇ were used as contrast, respectively. The results showed that, contrast to common rice varieties, the decreased velocity of ineffective tillers were slower after reaching the maximum number of tillers stage and spike rate were higher of the super high yield rice varieties. The correlation between yield and each characters of tillers were not significant. Yield had negative correlation with the maximum number of tillers, growth velocity of tillers and decreased velocity of tillers, but it had positive correlation with number of available tillers and spike rate.