为筛选适合贵州生产上利用的优良后备品种,对8个新引美国烤烟品种进行了试种观察试验.结果表明:各材料大田表现为前期长势中等至较强,中后期长势中等至较强或强.初烤烟叶产量以GL26H表现最高,达3 010.05 kg/hm2;其次是NC196,为2 625.00 kg/hm2;其余品种与对照产量相差不大.所有参试品种气候斑点病等叶斑类病害均有不同程度的发生,GL350、NC297等部分品种烟叶外观质量与对照品种K326相近.田间综合性状表现对照品种K326最好,NC55、GL26H、GL350、NC196表现为较好,NC297表现为中,其余品种表现为较差.%Major characteristics of eight flue-cured tobacco cultivars introduced from America were studied to screen excellent backup varieties suitable for Guizhou. The results showed that the growth vigor of each cultivar was medium to strong, in middle and late period was strong to stronger. The yields of GL26H and NC196 were 3 010. 05kg/hm2 and 2 625. 00kg/hm2 respectively. The yields of other cultivars had little difference with CK. All the cultivars had leaf spot diseases in various degrees such as weather fleck. The appearance qualities of GL350 and NC297 were similar to K326. The comprehensive performance of K326 in field was the best, NC55, GL26H, GL350 and NC196 took the second place, NC297 was medium, the other cultivars were bad.
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