Abstract: Using the field experiment scheme of “3414” complete fertilizer effect and the rice variety Ningyouhei 807, the field experiment of N, P, K fertilizer effect was carried out in Xibing town of Fu’an city in order to explore the rice fertilization index system of Fu’an city and guide the local scientific fertilization. The experiment data of fertilizer effect of “3414” were analyzed by R language, and NPK ternary quadratic equation, NK binary quadratic equation and P unitary quadratic equation were successfully formulated. By comparing the ratio of production and investment, the NK binary quadratic equation was the best fitting effect equation. The corresponding fertilization amount were 171.957 kg/hm² for N application, 75.000 kg/hm² for P₂O₅ application, 30.151 kg/hm² for K₂O application, and the theoretical optimum yield was 7 062.188 kg/hm².

Key words: rice, R language, the best fertilization, “3414”, Fu’an city of Fujian province;