贵州农业土壤硫素输入和输出比较，旱地土壤潜在缺硫。
Compared input and output of s in cultivated soil of Guizhou province, there was problems of potential sulfur deficiency in upland soil.
根据我国土壤缺硫趋向，提出复混肥料须注意加入硫素。
Sulfur is getting deficient in Chinese soils, therefore the author suggests sulfur must be taken into account in production of compound fertilizers.
环境污染控制、集约化农业生产以及低硫高浓度肥料的使用，加剧了全球范围内土壤缺硫状况。
Pollution controls, intensified cropping, and the absence of sulfur from high-analysis fertilizers are combining to produce a growing worldwide deficiency in soil sulfur;
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