In order to regulate the conversion of fertilizer nutrients in the soil and reduce nutrient losses,this study conducted a two-year corn field location trial in Lishu County,Jilin Province,to systematically study the application effects of efficiency N fertilizers with humic acid,alginate,amino acids and conditioners,and to screen out the opti-mal application formulations,with a view to providing a feasible way to reduce weight and increase efficiency in corn production.The results of the comprehensive two-year positioning test showed that the efficiency nitrogen fertilizer significantly improved the corn yield and fertilizer utilization.Compared with common urea treatment,maize yield increased by 7.17％,5.43％,5.52％and 3.41％with N fertilizer synergist Ⅰ,Ⅱ,Ⅲ and Ⅳ,respectively.N fertilizer utilization increased by 12.72％,2.68％,2.71％and 5.42％,respectively,and agronomical efficiency increased by 5.24,4.29,4.41,1.82 kg/kg,respectively.The maize yield increase,nitrogen fertilizer utilization rate and agronomic efficiency increased the most and had the best effect with the retroactive application of efficiency-enhancing nitro-gen fertilizer type Ⅰ,which is the most suitable type of nitrogen fertilizer for maize cultivation in this region.
维普
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