【摘要】 用多种微量元素加入 68%的硫酸中再与磷矿粉反应 ,可显著改善产品的物理性能 ,缩短熟化期 ,提高转化率。经种植水稻试验证明 ,产品肥效明显 ,经济效益显著更多还原

【Abstract】 Various trace elements are added into 68% sulfuric acid and reacted with ground phosphate rock, markedly improving the physical properties of the products, shortening the curing period, and raising the conversion rate. Experiments on paddy rice plantation prove that the fertilizer efficiency of the products is obvious, and the economic benefit remarkable.更多还原