Effects of Different Controlled-release Nitrogen Fertilizer on Yield and Nitrogen Utilization Rate of Maize

[Objective] The aim was to provide a theoretical foundation for wide utilization of controlled-release nitrogen fertilizer in maize field.[Method] Field plot experiment was conducted to compare the different controlled-release nitrogen fertilizers on yield and nitrogen utilization rate of maize.[Result] The highest yield and nitrogen utilization rate of maize was applied of controlled-release polyolefin-coated urea.Nitrogen utilization rate was increased significantly by 4.99% to 14.54% by the applying of controlled-release nitrogen fertilizer.[Conclusion] Controlled-release nitrogen fertilizer could increase nitrogen utilization rate of maize significantly,controlled-release polyolefin-coated urea had a best effect on maize.