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在田间条件下每生产１００ｋｇ干辣椒吸收Ｎ９．６４～１１．２４ｋｇ，Ｐ２Ｏ５２．３７～２．５６ｋｇ，Ｋ２Ｏ８．７２～１０．８９ｋｇ，Ｎ：Ｐ２Ｏ５：Ｋ２Ｏ为１：０．２３～０．２５：０．７９～１．０２。吸收高峰期在盛果期，营养敏感期在生长前期。在缺钾土壤上不施钾肥辣椒易产生严重的钾素胁迫，生长发育受阻。氮钾配施比单施氮平均增产６２．０～７０．０％，施钾产投比达到１０．９４～２２．１５。施钾改善辣椒商品性状，提高果实营养品质。
Under the field conditions, the production of 100kg of dried chili peppers absorbed N9.64 ~ 11.24kg, P52.37 ~ 2.56kg, K2O8.72 ~ 10.89kg, N: P2O5: K2O 1: 0.23 ~ 0.25: 0.79 ~ 1.02. Absorption peak in full fruit, nutrition sensitive period in early growth. Potassium deficiency in potash fertilizer is not prone to severe potassium stress, growth and development blocked. Nitrogen and potassium application rate increased 62.0 ~ 70.0% on average compared with that on nitrogen application only, and the ratio of potassium output and production rate reached 10.94 ~ 22.15. Potassium fertilizer to improve the traits of peppers, improve fruit nutritional quality.