Beneficial Effects of Biochar Application with Nitrogen Fertilizer on Soil Nitrogen Retention, Absorption and Utilization in Maize Production

The irrational use of nitrogen (N) fertilizer has become a major threat to soil quality and food security, resulting in serious ecological environmental problems. Holistic approaches N application are required maintain high utilization efficiency (NUE) sustainable agriculture development. Biochar is an efficient carbon-rich material for amending promoting crop uptake, but knowledge pertaining the effects biochar on fertilizers still limited. In this study, field plot experiment was designed detect combined (0, 15 30 t ha?1) (204, 240 276 kg nutrient levels, NUE, plant growth performance production maize. results demonstrated that can significantly decrease pH increase contents organic carbon, mineral N, available phosphorus potassium. uptake content were largely promoted by addition biochar, higher leaf photosynthetic efficiency, dry matter accumulation grain yields. highest yields (14,928 achieved using ha?1 combination with NUE value (46.3%) reached 204 blended biochar. According structural equation modeling, beneficial biomass maize attributed direct related chemical properties parameters. conclusion, effective strategy enhance increasing fertility, improving growth.