Comparison of fertilizer use efficiency in grain production between developing countries and developed countries

The investigation of chemical fertilization intensity (FI) and efficiency can provide basal data for decision-making in food production and environmental impact assessments of fertilization. The present study aimed to compare trends of the FI and efficiency during 1961-2018 in developed and developing countries using a simple method.The FI in China increased rapidly from approximately 5 kg ha-1 in 1961 to the highest value of 282 kg ha-1 in...