Effects of fertilization on maize yield, soil carbon and nitrogen

Taking Zhengdan 37 maize varieties as the research object, effects of different forms of nitrogen fertilizer on maize yield, soil total nitrogen, and soil dissolved organic carbon content changes in Yangling, Shaanxi were studied through field experiment, to provide comprehensive theoretical basis for the reasonable fertilization application for maize in Guanzhong Plain. The results showed that the nitrogen treatments could significantly increase maize yield, increase the total nitrogen and the nitrogen content in the soil, while had no significant effect on soil dissolved organic carbon, and had little effect on soil microbial content.