目前过磷酸钙肥料供不应求,因此有些生产队把磷矿石粉碎后直接下地,效果很低或者不增产。也有些县、社、队利用废硫酸土法制磷肥,由于废硫酸来源有限,以及加工技术不过关等原因,制出的磷肥质量不高。我们试验利用氧化硫硫杆菌转化磷矿粉,取得较好的效果。从自然界中分离到的氧化硫硫杆菌,在一定条件下能够利用硫磺或其它硫磺 Currently over-supply of calcium phosphate fertilizer, so some production teams crushed phosphate rock directly to the ground, the effect is very low or not increase production. Some counties, clubs and teams make use of waste sulphate to make phosphate fertilizer. Due to limited sources of waste sulfuric acid and processing technologies, the quality of phosphate fertilizer is not high. We tested the use of thiobacillus thiooxidans phosphate rock conversion, and achieved good results. Thiobacillus thiooxidans isolated from nature can utilize sulfur or other sulfur under certain conditions