硫是作物必需的16种营养元素之一。我国在缺硫地区施硫肥,一般可以使作物增产15%-20%,且能改善作物品质。试验表明:柑桔、大豆、甘蔗、花生、红薯、茶叶等作物施硫增产显著,一般在10%以上。作物缺硫的原因各有不同:一是土壤本身缺硫。如南方大部分红壤土,硫的含量偏低,一般在0.03%以下,而有效磷仅16-30ppm。在生产上因氮、硫比例失调 Sulfur is one of the 16 nutrient elements essential for crops. Sulfur fertilization in areas deprived of sulfur generally increases crops by 15-20% and improves crop quality. Experiments show that: Citrus, soybean, sugar cane, peanuts, sweet potatoes, tea and other crops significantly increased sulfur production, generally above 10%. The reasons for crop sulfur are different: First, the soil itself sulfur deficiency. As most of the red soil in southern China, sulfur content is low, generally less than 0.03%, while available phosphorus is only 16-30ppm. In production due to nitrogen, sulfur imbalance