Abstract: Aiming to guide the actions of reducing chemical fertilizer rate and increasing efficiency in different cities of Jiangxi province, the annual amount of chemical fertilizer in different cities was analyzed from 2012 to 2014 based on “Jiangxi statistical yearbooks”, and the correlation between chemical fertilizer rate and agricultural output were quantified. The results showed that, the annual amounts of nitrogen, phosphorus and potassium fertilizers in Ganzhou and Yichun were higher than other cities of Jiangxi province. Meanwhile, the proportion of Nanchang, Jiujiang, Ganzhou, Ji’an, Yichun, Fuzhou, and Shangrao cities for nitrogen, phosphorus and potassium chemical were more than others, and the cumulative proportions of nitrogen, phosphorus and potassium fertilizers in Jiangxi province were 90.09%, 88.77% and 91.29%, respectively. Further analysis showed that the agricultural output could be increased by 4.138 billion to 7.259 billion yuan per year, when the amount of nitrogen, phosphorus, and potassium fertilizer was increased by 10 000 per year. Otherwise, phosphorus and potassium fertilizers were obvious higher than that of nitrogen fertilizer, through the slope of the fitting equations between the chemical fertilizer and the agricultural output. Therefore, in the follow-up action of reducing chemical fertilizer application, Ganzhou and Yichun should be focus on in Jiangxi province for scientific fertilization, especially the contribution of phosphorus and potassium fertilizer to agricultural output.

Key words: Jiangxi province, chemical fertilizer, agricultural output