Analysis on the changes of fertilization intensity and efficiency in China's grain production from 1980 to 2019.

Published in: Journal of the science of food and agriculture (2022)

From 1980 until 2019, a reduction of FAE from 1 to 0.80 with an average of 0.75 was observed in China. FIE was found between 0.65 and 0.85 and had the potential of upgrading by 15-35%. Therefore, China needs to improve the fertilizer use efficiency in order to strive for negative growth of chemical fertilizer intensity and ecological agriculture construction. © 2022 Society of Chemical Industry.

Keyphrases

climate change
high intensity
sewage sludge
heavy metals