对于中高纬度湿润的温带、寒温带地区,土壤硫的形态与含量特征以及硫肥的效果,在北美与苏联等地区已早有研究.例如在加拿大的灰化土上油菜施硫增产29—111,9%,在灰色森林土的燕麦盆栽试验中,施硫达到显著的增产效果.据报导在苏联的灰化土与黑钙土上,对三叶草、大麦、小麦等作物施用硫肥,都有一定的增产效果,增产幅度大多在10%以上.而在牧草上则更高一些. For wet and temperate temperate and temperate regions in the mid-high latitudes, soil sulfur form and content characteristics as well as sulfur fertilizer effects have been studied in North America and the Soviet Union, etc. For example, 111, 9%, in the gray forest soil oat pot experiment, applied sulfur to achieve significant yield increase.It has been reported in the Soviet Union’s ash and chernozem, clover, barley, wheat and other crops, the application of sulfur fertilizer, both A certain increase in yield, yield more than 10% mostly in the pasture is higher.