This chart shows the increase of chemical and
organic fertilizer application in China between 1952 and 1993. While
the use of organic fertilizers was predominant between 1950 and 1960,
the use of chemical fertilizers increased rapidly since the late
1970s. By 1982, Chinese farmers were applying more chemical than
organic fertilizers on their fields; by 1993 they were using about
twice as much chemical than organic fertilizers.
note that the amount of fertilizer application is probably over-estimated,
due to an under-estimation of the cropland area in these
Wang, Q. / Halbrendt, C. / Johnson, S.R. (1995): Grain
Production and Environmental Management in China's Fertilizer Economy.
In: Journal of Environmental Management, Vol. 47, 283-296. And: China
Statistical Yearbook, 1998. State Statistical Bureau, People's
Republic of China, Beijing. p.393