In order to explore the effect of microbial fertilizers in the process of reducing nitrogen fertilizer application,five field treatments were set up in the field plot experiment,and the effects of microbial fertilizer on reducing nitrogen fertilizer in summer maize on salinized soil in Cangzhou and the change law of soil prop erties were studied. The results showed that applying 15 kg/hm~2 microbial fertilizer,the application of nitrogen fertilizer decreased by 80% of the conventional nitrogen application,t...