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The different insertional position of kaipianjiangjianling was tested to investigate the effect on tobacco yield and quality for improving upper tobacco quality and raising farmers income.

为改善烤烟上部烟叶品质,降低和控制上部烟叶烟碱含量,增加烟农收入,进行了开片降减灵不同插签位置对烟叶产质量影响的试验研究。