Sulphur deficiency in soils of China was estimated and indicated by a map (Fig. 1). Based on estimation of input and output of soil sulphur and crop response to sulphur fertilizers, it was stated that sulphur deficiency would not occur in large areas of China in the near future. Under certain special conditions, however, paddy soils submerged under cold water, some sandy soils might become sulphur deficient. The decreasing use of sulphur containing fertilizers, as a consequence of developing the chemical fertilizer industry, is predicted.
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刘崇群,曹淑卿,陈国安,吴锡军.中国南方农业中的硫[J].土壤学报,1990,27(4):398-404. Liu Chongqun, Cao Shuqing, Chen Guoan, Wu Xijun. SULPHUR IN THE AGRICULTURE OF CHINA[J]. Acta Pedologica Sinica,1990,27(4):398-404.