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１９９７～１９９８年在广东省五华县的紫色土田进行了烤烟优质高产施肥试验。结果表明，在一定的氮磷施用量条件下，烤烟的产量、质量及产值都是随着施钾比例的提高而提高。在一定的配比下，烤烟的产量及产值在施氮 １６５ ｋｇ／ｈｍ~２以下均随施氮量的增加而提高；均价和优级烟率以中等氮水平（ １３５ ｋｇ／ｈｍ~２）的为最高。本文还提出烤烟的最佳施肥方案。
1997-1998 in Wuhua County, Guangdong Province, purple soil fields were flue-cured tobacco high-yield fertilization experiment. The results showed that the yield, quality and output value of flue-cured tobacco increased with the increase of potassium application rate under a certain nitrogen and phosphorus application rate. Under a certain ratio, the yield and output value of flue-cured tobacco increased with the increase of nitrogen application rate under the nitrogen application rate of 165 kg / hm ~ 2; ) For the highest. This article also proposed the best flue-cured tobacco program.