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分析了天津７个土类９４个土壤样本的全硫和有效硫，结果表明，缺硫土样占总样点的２７％，约１２．５３万ｈｍ２。综合田间和盆栽试验：硫在一些土壤上已成为作物高产的限制因子，增产幅度冬小麦９．５％～１７．８％，玉米８．８％，春小麦５．９％～１８．６％。硫肥能促进冬小麦有效分蘖，提高子粒蛋白质含量。大白菜生长速率增加，减少非蛋白质氮化合物含量，包心实，提高食用价值。
The total sulfur and available sulfur in 94 soil samples of 7 soils in Tianjin were analyzed. The results showed that the sulfur-deficient soil sample accounted for 27% of the total sample and about 125,300 hm2. Integrated field and pot experiments: Sulfur has become a limiting factor for crop yield in some soils, with increases of 9.5% to 17.8% for winter wheat, 8.8% for maize and 5.9% to 18.6% for spring wheat. Sulfur fertilizer can promote effective tillering of winter wheat and increase grain protein content. Chinese cabbage growth rate increased, reducing the content of non-protein nitrogen compounds, including the package, improve food value.