The regional adaptabilities of 10 mainly-planted high-quality late rice varieties in Hunan province were studied in Yiyang, Changsha and Chenzhou regions.The results showed that:among 3 experimental regions, there was no obvious difference in the average grain yield of these varieties, but there were significant differences in the rice milling quality, appearance quality and eating quality.In Yiyang region, the chalkiness rice rate was low;the amylose content was moderate;the brown rice rate and head rice rate were 79.8%and 58.8%, respectively, being significantly higher than those in Changsha region.It was found that every high-quality late rice variety had its own suitable planting region.When Chuangxiang No.5, Yuzhenxiang, Nongxiang 18, Nongxiang 21, Xiangwanxian No.12 and Huanghuazhan were planted in Yiyang region, their all quality indexes could reach the national stand-ards for good-quality rice.While Xing No.2 and Xiangwanxian No.13 were more suitable to be planted in Chenzhou region.%对湖南省大面积种植的10个优质晚稻品种进行了区域适应性试验，结果表明：在湖南省湘北、湘中和湘南种植优质晚稻，其平均产量无明显差异，而稻谷碾米品质、外观品质和食味品质差异达显著水平；3个地区之间比较，湘北益阳地区种植的优质晚稻稻谷垩白米率低，直链淀粉含量适中，出糙率、整精米率分别为79．8％和58．8％，显著高于长沙地区。不同的优质晚稻品种有各自适宜种植地区：创香5号、玉针香、农香18、农香21、湘晚籼12号、黄华占适宜在益阳种植，其各项品质指标均能达到优质稻谷国家标准；星2号和湘晚籼13号更适合在郴州地区种植。
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