在早、晚季不同环境条件下 ,测定了 48个早籼品种的 9个稻米品质性状 ,包括外观品质、加工品质和蒸煮品质。结果表明 ,糙米长宽比、糙米率、整精米率、垩白粒率、垩白度和直链淀粉含量的一级达标率分别为早季 5 8.33%、 4.17%、 87.5 0 %、 2 .0 8%、 0和 10 .42 %,晚季 5 8.33%、 6 8.75 %、 97.92 %、 14.5 8%、 12 .5 0 %和2 2 .92 %。依据国标 (1999)优质稻谷的评价标准筛选出可供早季种植的品种有源珍 397,其稻米品质性状达三级标准 ;可供晚季种植的达一级标准的品种有新黄占 ,达二级标准的品种有明恢 6 3、穗丰占、绿黄占和美国茉莉香稻。此外 ,还讨论了不同环境下品质性状变化特点。 Nine rice quality traits of 48 early indica cultivars were determined under different environmental conditions in early and late seasons, including appearance quality, processing quality and cooking quality. The results showed that the first grade compliance rate of brown rice as aspect ratio, brown rice rate, milled rice rate, chalky grain rate, chalkiness degree and amylose content were 5 8.33%, 4.17% and 87.5 0% respectively in early season. 0 8%, 0 and 10 .42%, 5 8.33%, 6 8.75%, 97.92%, 14.5 8%, 12.5% ​​and 22.92% respectively in the late season. According to the national standard (1999) evaluation criteria for high-quality rice screening available early-season planting varieties Zhen-397, the rice quality traits up to three standards; for late-season planting up to a standard varieties of new yellow accounted for, Up to two standard varieties Minghui 6 3, Sui Feng accounted for, accounting for the United States and green jasmine fragrant rice. In addition, the characteristics of quality traits in different environments are also discussed.