The research was conducted in 2014 in the District of Caynarachi, Lamas province, San Martín region, geographically located 06º 19' 49.52" south latitude and 76 º 17' 6.19" latitude west with a 187 msnmm altitude. The work was to "determine the curves of extraction of nutrients N - P - K fertilizer application in the cultivation of Chinese onion (Allium fistolosum L.) Under District Caynarachi" Evaluations were made fresh and dry weight of bulbs and leaves for treatments at 1 O, 20, 30 and 60 days, foliar chemical analysis of bulbs and leaves in which the percentages of nitrogen, phosphorus and potassium were determined performed. Extraction curves macronutrients ( N, P, K ) per treatment (TO, T1, T2, T3 ), these being (O - O - O), (85 - 50-160 ), ( 100-70 - 200 ), (150 - 90 - 240); and then make the total extraction of macronutrients by treatment expressed in kg I ha . The design was...