Summary
● The framework of multi-objective nitrogen (N) management was developed. ● Multi-objective targets were established to support agriculture sustainable production. ● A food chain approach was developed to accurately quantify N flow in food system. ● “3R” principle was used in developing N management strategy. ● The collaboration with different stakeholders is crucial for promoting technologies. Nitrogen (N) is an essential nutrient for food production. The rapid increase in population requires high inputs of N to meet the growing food demand. If not managed well, the substantial loss of N from the food system has multiple impacts on grain yield, air and water pollution, and the economic benefits of agricultural. Multi-objective (food security, environmental sustainability and economic sust
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