多数粮食作物和棉花、叶菜、椰子、油棕榈等施用含氯肥料没有不良影响。但有不少作物，如亚麻、荞麦、茶叶、烟叶、柑橘、葡萄、甜菜和马铃薯等施用含氯肥料会影响作物的质量，使品质显著降低。随着农业生产水平的提高，对高浓度无氯复合肥的需求也愈来愈大。硫酸钾是无氯复合? Most food crops and cotton, leafy vegetables, coconut, oil palm and other chlorine-containing fertilizers have no adverse effects. However, the application of chlorine-containing fertilizers to many crops, such as flax, buckwheat, tea leaves, tobacco, citrus, grapes, beets and potatoes, can affect crop quality and significantly reduce quality. With the improvement of agricultural production, the demand for high-concentration chlorine-free compound fertilizer is also growing. Potassium sulfate is chlorine-free compound?