Abstract: A field experiment to study the effects of different fertilizer application on plant height and yield of silage maize in Shijiazhuang, Hebei province in 2008 was carried out to explore the impact of fertilizer application on silage maize (Zea mays) output and quality and to establish the best mode of fertilizer application. The experiment used a re-split-plot design to study the influence of the proportion and quantity of different base fertilizer, seed fertilizer and topdressing on silage maize growth and output with three replications in a randomized complete block design. 1) Barnyard manure took time to become effective, but the fertilizer efficiency of compound fertilizer lasted for a short duration only compared with barnyard manure. In areas cultivated with silage maize as a livestock feeder, barnyard manure was abundant and could be used as a basic fertilizer to replace compound fertilizer. This operation not only helps the growth of silage maize, but also contributes to making full use of the resources and reducing environmental pollution. Seed manure of zinc fertilizer promotes the growth of silage maize, but the amount applied should be restricted. The duration of fertilizer applied as a urea topdressing was relatively short, but the effect was striking in promoting ensiling maize growth and increasing the output of maize hay. 2) Base fertilizer for A2 level, seed manure for B2 or B3 level, urea topdressing for C1 horizontal showed the greatest speed of effect and resulted in the highest plant heights. The base fertilizer for A2 level, seed manure for B1 level, urea topdressing for C1 level led to the biggest harvest yield. The comprehensive results of the test suggest that combining local agricultural production reality, base fertilizer for A2 level, seed manure for B2 level, urea topdressing for C1 level give the best results. 3) Hay output of silage maize can be predicted by following the regression equation DW=25 529.29-2 842.18C-424.38B (R²=0.408) or DW=24 468.33-2 842.18C(R²=0.373) or DW=10 267.89+12 104.11A-3 058.09A² (R²=0.377).