利用 6个上海粳稻品种和 9个韩国粳稻品种进行了品质特性比较分析。结果表明 ,上海和韩国品种间的粒宽、长宽比、穗着粒密度、直链淀粉含量、蛋白质含量和碱消值均呈显著的差异 ,上海水稻品种比韩国水稻品种粒型较细长 ,穗着粒密度高 ,直链淀粉含量、蛋白质含量和碱消值高 ,但食味值和淀粉谱特性则相反 ,韩国水稻品种的食味值和淀粉谱特性中的最高粘度值、最终粘度值和下降粘度值显著高于上海水稻品种。水稻品质特性间相关分析结果表明 ,食味值与直链淀粉含量 ,蛋白质含量和穗着粒密度呈极显著负相关 ,而与最高粘度值和下降粘度值呈显著的正相关。直链淀粉含量和蛋白质含量与最高粘度值、最低粘度值和最终粘度值均呈极显著的负相关。由此认为 ,通过育种手段降低直链淀粉含量和蛋白质含量 ,改进穗型和粒型结构 ,并在栽培措施上降低氮肥施用量是提高上海水稻品质的有效途径 The quality characteristics of six japonica rice varieties and nine japonica rice varieties were compared and analyzed. The results showed that there were significant differences in grain width, aspect ratio, ear grain density, amylose content, protein content and alkali consumption between Shanghai and South Korea. Shanghai rice varieties were slender than Korean rice varieties , Panicle grain density is high, amylose content, protein content and alkali consumption are high, but the taste value and starch spectrum characteristics are opposite. The highest viscosity value and final viscosity value in the taste value and starch spectrum of Korean rice varieties are Decline viscosity was significantly higher than the Shanghai rice varieties. Correlation analysis showed that there was a significant negative correlation between food taste and amylose content, protein content and ear grain density, but significant positive correlation with highest viscosity and descending viscosity. Amylose content and protein content and the highest viscosity value, the lowest viscosity value and the final viscosity value showed a significant negative correlation. Therefore, reducing the amylose content and protein content by breeding means, improving the panicle and grain structure, and reducing the nitrogen fertilizer application rate in cultivation measures are effective ways to improve the quality of rice in Shanghai