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(一)磷肥工业概况我国磷铵和重钙的产量甚微,市场供应仍以普钙和钙镁磷肥为主。1984年进口磷肥量超过国产磷肥量的一半,国家又给予价格补贴,严重冲击了国内市场。近来磷肥生产有了复苏。国际磷肥市场的行情较国产磷肥高出很多,据1985年《磷与钾》报道,磷矿及磷肥的离岸价如下:
(A) Overview of phosphate fertilizer industry China’s production of ammonium phosphate and heavy calcium is very small, the market supply is still the main calcium and magnesium phosphate. In 1984 imports of phosphorus fertilizer more than half of domestic phosphate fertilizer, the state has given price subsidies, a serious impact on the domestic market. Recently, phosphate fertilizer production has recovered. The market of international phosphate fertilizer market is much higher than that of domestic phosphate fertilizer. According to the report of “phosphorus and potassium” in 1985, the fob rate of phosphate rock and phosphate fertilizer is as follows: