在低温中湿变黄条件下烤后烟叶物理性状较好，烟碱、总氮、淀粉、硝酸盐和亚硝酸盐含量含量较低；
The physical properties of cured tobacco leaf was best under low temperature and middle humidity yellowing condition, every index was within the range of the suitable one;
预烤条件及预烤容许范围会随烤箱的种类及放入烤箱基板的数量之不同而有差异，因此需实施确认，实验后，再设定适宜之条件。
The scope of pre-baking will change with different kind of oven and quantity of board in oven. Therefore, after implementing confirmation experiment, then establish suitable condition.
结果表明：在绿肥全部还田条件下，不同氮肥用量对烤烟株高、烟叶spad值、烟株干物质累积以及烤后烟叶产量、产值和化学成分均有一定的影响。
Results showed that nitrogen fertilization rate significantly affected tobacco plant growth, leaf SPAD value, dry matter accumulation, leaf yield, economic value as well as chemical components.
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