不同控释氮肥对玉米产量和氮肥利用率的影响

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

[目的]为控释氮肥在玉米上的广泛应用提供理论依据。[方法]通过田间小区试验,比较了不同控释氮肥对玉米产量和氮肥利用率的影响。[结果]3种控释氮肥中树脂包膜氮肥增产和提高玉米氮肥利用率的效果均最好。相比普通氮肥,不同控释氮肥显著提高了玉米氮肥利用率,增幅达4.9914.54个百分点。[结论]控释氮肥可以提高玉米氮肥利用率,树脂包膜氮肥在玉米上的应用效果最佳。

[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.