烟叶是一种农产品,其质量受多种因素的影响,烟农所生产的烟叶有优有劣,质量各异。只有经过分级,将质量相对一致的烟叶列入同一等级,才便于收购部门以质论价和卷烟工业使用。本文就副组烟叶在分级操作中的正确区分进行阐述,以便于指导分级操作,达到正确执行烤烟国家标准之目的。 Tobacco leaf is a kind of agricultural products, the quality of which is affected by many factors. Tobacco leaf produced by tobacco farmers has superior quality and different quality. Only through the classification, the relatively consistent quality of tobacco included in the same level, it is easy for the acquisition department quality control and the cigarette industry to use. In this paper, the correct classification of sub-groups of tobacco in the grading operations are described in order to guide the grading operation, to achieve the correct implementation of the national standard tobacco purposes.