论文部分内容阅读
利用田间小区试验,对黑龙江省3个超级稻品种松粳9号、龙稻5号和龙粳14号及其相应对照品种进行干物质积累与产量关系的研究。结果表明,在各生育期超级稻品种的干物质积累量均高于普通对照品种,其中,分蘖盛期高14.2%～34.0%,拔节孕穗期高16.8%～37.9%,齐穗期高20.2%～35.6%,成熟期高15.1%～18.0%。相关分析结果表明,各生育期的总干物重与产量均呈显著或极显著正相关关系(r=0.85*～0.97**),孕穗期叶片、茎鞘干物重及总干物重与穗粒数和结实率两性状均呈显著正相关(r=0.76*～0.82*)。
The field plot experiment was conducted to study the relationship between dry matter accumulation and yield of three super rice varieties Songjing 9, Longdao 5 and Longjing 14 and their corresponding control varieties in Heilongjiang Province. The results showed that the dry matter accumulation of super rice varieties in each growth stage were higher than that of common control varieties, among them, the high tillering stage was 14.2% ~ 34.0%, the height of jointing and booting stage was 16.8% -37.9%, the heading stage was 20.2% ~ 35.6%, mature 15.1% ~ 18.0%. The results of correlation analysis showed that there was a significant or very significant positive correlation between total dry matter weight and yield at each growth stage (r = 0.85 * -0.97 **), dry matter weight at the booting stage, total dry matter weight and grains per spike There was a significant positive correlation between seed setting rate and trait rate (r = 0.76 * -0.82 *).