青黄与光滑并存烟叶品质最差。
香气质是评价烟叶品质的重要指标之一。
Smoking aroma quality is one of important index to evaluate the quality of tobacco leaves.
增加了烟叶产量，改善了烟叶品质，提高了烟叶的钾含量。
The yield of tobacco leaves is increased, and quality of leaves is improved, and the potassium content in tobacco is enhanced.
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