To produce 1000 kg of single-season rice grain, 14.8 kg N. 3.8 kg P. and 15.0 kg K were required in the above-ground plant dry matter, and the corresponding internal efficiencies (lEs) were 67.6 kg grain per kg N, 263.2 kg grain per kg P. and 66.7 kg grain per kg IC For early/middle(late rice, the amount of 17.1 kg N, 3.4 kg P. and 18.4 kg were required in the above-ground plant dry matter to produce 1000 kg of grain, and corresponding internal efficiency (IEs) were 58.5 kg grain per kg N. 294.1 kg grain per kg P. and 54.3 kg grain per kg The QUEFTS model provides a scientific foundation for filtering high-yielding and high-efficiency variety, optimizing fertilizer application rate and developing nutrient management strategies to increase yield and nutrient use efficiency.