Adopting split-plot experiment design, and using‘Jijing 511’and‘Jijing 809’as material, effects of coupling of water and fertilizers on rice yield and yield components were studied. The results showed that for both varieties, fertilizer and water treatment have mutual effect on grain numbers per panicle, 1000-grain weight, effective tiller number, seed rate and yield. When the N was reduced by 22%, the rice yield was the highest for traditional irrigation methods. Intermittent irrigation of and controlled irrigation was not conducive to increase and steady yield of rice in saline-alkali paddy field.