The release characteristics of nitrate in the static water were checked by mono-component and multi-component coated controlled release fertilizers treated with different temperatures and granule radii. The results showed that the nitrate release rate increased at higher temperature; and was promoted under smaller granule radius. Comparing with mono-component coated fertilizer, the linear period of multi-component coated fertilizer turned shorter, the nitrate release rate increased significantly, and the activation energy increased accordingly. The nitrate release rate was directly related with the variety and concentration of ion in granule, diffusion coefficient, coating thickness and diffusion area. The release profiles of coated fertilizer can be evaluated by the lag period, the linear period, the decay period and the activation energy, which gives a new way for the development and application of coated fertilizer.