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采用“双佳值”法完全试验设计对红壤旱地芝麻氮、磷、钾肥的最佳配比及其不同总用量与不同的播种期相互作用对产量影响进行了综合研究。结果表明，芝麻Ｎ、Ｐ２Ｏ５、Ｋ２Ｏ的最佳摩尔比为４３∶３７∶２０。以此比例的不同总施肥水平与分期播种两两正交，试验产量经非线性多元回归分析得知，总施肥水平与播种期在交互作用，当总施肥量ｘ１＝１．６９２６倍于１１．２３５ｋｍｏｌ／ｈｍ２，同时在６月１０日播种的情况下，能获得芝麻的最高产量７９６．８ｋｇ／ｈｍ２。
The optimal ratio of nitrogen, phosphorus and potash of sesame to red soil arid the different total amount of sowing and the interaction of different sowing dates on the yield were comprehensively studied with “double good value” method. The results showed that the optimum molar ratio of sesame N, P2O5 and K2O was 43:37:20. The different total fertilization levels were sowed orthogonally to the staging by this ratio. The results of nonlinear regression analysis showed that the total fertilization level interacted with the sowing time, and the total amount of fertilizer x1 = 1.6926 times 11. 235kmol / hm2, while the highest yield of sesame seeds was 796.8kg / hm2 when sown on June 10.