| This study aimed to find out the effects of nitrogen (N) fertilization managements on nutrient accumulation, transport, and production efficiency of rice under soda saline\|alkali paddy field in western Heilongjiang province. Kenjing 7 and Kenjing8 (the japonica rice cultivar) were used as the experimental material in 2017 and 2018, five kinds of N fertilizer management were set up as: without N (N0), conventional N used by farmers (N1), balanced N application (N2), reduction of N (N3), and N backward (N4), the effects of N fertilization managements on NPK accumulation, transport, and production efficiency of rice were studied.The results showed that compared with conventional N used by farmers, the accumulation of N, P, and K in plants at heading and mature stages were significantly increased by balanced N application and reduction of N, but the above results of N backward were opposite. The transport capacity, transport efficiency, and harvest index of N, P, and K were improved at the heading and the mature stages by balanced N application and reduction of N. Balanced N application increased the most, transport capacity of N, P, and K increased by 55.54%, 60.03% and 40.07%, respectively, transport efficiency of N, P, and K increased by 12.75%,19.72% and 14.26%, respectively, harvest index of N, P, and K increased by 6.04%, 5.13%, and 2.08%, respectively. Additionally, potassium uptake of 100 kg rice grain＞N uptake of 100 kg rice grain＞P uptake of 100 kg rice grain, N, P, K uptake of 100 kg rice grain all showed balanced N application＞reduction of N＞conventional N used by farmers＞N backward＞without N, and rice production efficiency of N,P,K showed contrary trend. Balanced N application and reduction of N were beneficial to improving the nutrient accumulation and utilization efficiency of rice in soda saline\|alkali paddy field. |