The slag can be used as a potassium silicon compound fertilizer, suitable for amelioration of potassium-deficient or acid soils.
炉渣可作为钾硅复合肥料，适用于缺钾或酸性土壤的改造。
Sulfur is getting deficient in Chinese soils, therefore the author suggests sulfur must be taken into account in production of compound fertilizers.
根据我国土壤缺硫趋向，提出复混肥料须注意加入硫素。
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