The study looked at how planting density and fertilizer rates affect the yield of a type of purple sweet potato called Jingshu No.6 in Guangxi. They tested different levels of planting density, nitrogen, phosphorus, and potassium application rates. The results showed that the best combination for high yield was a planting density of 6.00×104 plants/ha, with nitrogen at 135kg/ha, phosphorus at 45.0 kg/ha, and potassium at 270 kg/ha. The study found that planting density and potassium application had a significant impact on yield, while nitrogen application had a slightly less significant effect.