硫在上个世纪八十年代末被列为农作物第四大营养元素,和氮、磷、钾并列农作物四大营养要素。加拿大钾磷研究所中国办事处主任、中国农业科学院金继运博士对我国17个省的土壤分析表明:全国缺硫土壤近30％。河南省农科院土肥所张桂兰采用土壤系统研究法对全省主要土 Sulfur in the late eighties of last century was classified as the fourth largest crop of nutrients, and nitrogen, phosphorus and potassium crops tied for the four major nutritional elements. Potash Institute of China, China Office Director, Chinese Academy of Agricultural Sciences Dr Kim Ji-Yun in China’s 17 provinces of soil analysis shows that: nearly 30% of the country’s sulfur-deficient soil. Soil and Fertilizer Institute of Henan Academy of Agricultural Sciences, Zhang Guilan soil research methods of the province’s main soil