Abstract: Using ‘3414’ test design scheme, a field fertilizer efficiency test on rice was carried out. The results showed that under this test conditions, the best yield-increasing effect was applying potassium fertilizer. The maximum yield of rice was received under the condition of applying N, P₂O₅ and K₂O were 9.8 kg/667 m² (147 kg/hm²), 3.8 kg/667 m²(57 kg/hm²) and 9.1 kg/667 m² (136.5 kg/hm²), respectively. The best economic benefit of rice was received while applying N, P₂O₅ and K₂O were 7.2 kg/667 m² (108 kg/hm²), 3.0 kg/667 m² (45 kg/hm²) and 5.9 kg/667 m² (88.5 kg/hm²), respectively.