论文部分内容阅读
我国南方热带和亚热带地区，有相当面积的作物及其生态环境缺硫，缺硫受气候因素中水热条件的影响较大，年均温愈高或降雨量愈大的地区，土壤愈容易发生缺硫；缺硫还容易出现在地下水位低的中低肥力田或硫肥用量不足的高产田；由花岗岩、玄武岩、砂页岩发育的土壤或质地较轻的土壤也容易发生缺硫。１９７８年以来，累计在南方几省１７８０００ｈｍ２的耕地上试验、示范、推广磷石膏、石膏、硫磺等含硫肥料，经济、社会、生态效益均较显著。当地希望今后生产含硫的高浓度氮、磷肥
In the tropical and subtropical regions of southern China, there is a considerable area of crops and their ecological environment lack of sulfur, sulfur deficiency by the climatic factors in the hydrothermal conditions, the greater the annual average temperature or the greater the rainfall, the more prone to soil Lack of sulfur; Lack of sulfur is also prone to low water table in the low groundwater level or high yield of sulfur fertilizer; the granite, basalt, sand shale development of soil or light soil is prone to sulfur deficiency. Since 1978, a total of 178000hm2 of arable land in several southern provinces has been tested, demonstrated and promoted with sulfurous fertilizers such as phosphogypsum, gypsum and sulfur, with remarkable economic, social and ecological benefits. Local hope that the future production of high concentrations of sulfur nitrogen, phosphate fertilizer