A pot experiment in wheat and faba bean intercropping conditions,nitrogen and silicon levels on the application of crop biomass,nitrogen content,nitrogen uptake.The results show that the wheat intercropping on nitrogen absorption and biomass yield increased significantly stimulated the biological yield of intercropped wheat in the jointing stage and heading stage respectively,compared with sole wheat increased 55.2%,50.9% in the jointing stage.Nitrogen uptake of intercropped wheat at jointing stage and heading stage,respectively for wheat than the single 178% increase,214%.Under the experimental conditions,intercropping significantly increased wheat biomass,nitrogen content and nitrogen uptake Keywords:wheat,broad bean,intercropping,nitrogen absorption