Bulk curing barn with different airflow movement direction and common barn was compared with regqard to quality of cured tobacco leaves, cost of curing, and leaf output.

对两种不同气流运动方向密集烤房与普通烤房在烤后烟叶质量、烘烤成本、产值等方面进行了对比研究。

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Effect of urea malic acid on the content of tar in smoke smog and the quality of raw tobacco leaf was studied by gas spectrum and common analysis methods.

用气相色谱及常规分析方法，研究了苹果酸脲对烟气中焦油含量及原烟品质的影响。

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