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为研究白云石粉施用量对‘红花大金元’烟叶病害及产质量的影响，以烤烟品种‘红花大金元’为材料，采取随机区组设计，设置4个不同处理进行研究。试验结果表明，白云石粉的施用量不同对烟株的大田生育期、农艺性状、内在化学成分并不会带来太大的影响；当白云石粉施用量超过1500 kg/hm2时，对大田后期病害的发生有了一定的抑制作用；白云石粉施用量过多反而会影响部分经济性状。综合可知，烟叶生产上施用白云石粉要在合理的范围内，才能有效改善烟叶品质。“,”To study the effects of dolomite powder application amount on disease, output and quality of ‘Honghuadajinyuan’, an investigation was performed by taking flue-cured tobacco variety ‘Honghuadajinyuan’ as the material, employing the randomized block design and setting 4 different treatments. The test results showed that different application amounts of dolomite powder did not have obvious effects on the growth period after transplanting, economic characters, and intrinsic chemical components of the tobacco plant; when the application amount of dolomite powder exceeded 1500 kg/hm2, it would have inhibiting effects on the occurrence of disease in the later growth period after transplanting; too much dolomite powder would affect some of the economic characters. To sum up, the application amount of dolomite powder in tobacco production should be in a reasonable range to effectively improve the tobacco quality.