用科学发展观重新审视低浓度磷肥的价值和发展前景

近15年来,我国低浓度磷肥(过磷酸钙和钙镁磷肥)产量一直保持低速增长,已达468万t P2O5,几乎占磷肥产量的50%。由于其单位P2O5价格只相当于高浓度磷肥的80%左右,而且含有硫、钙、镁、硅等中量营养元素,又充分利用了中低品位磷矿资源,减少了硫酸的消耗,是一种资源节约型产品。实践证明,它将与高浓度磷肥长期共存。要转变传统观念,用科学发展观重新认识其价值,给予大力重视和支持,以实现可持续发展,建设节约型社会。

Reconsidering the value and prospect of low-analysis phosphate fertilizer by scientific conception of development

With annual 4.68 million ton P_2O_5and a half of total output of phosphate fertilizers in China,the 2 lowanalysis phosphate fertilizers(SSP and FCMP)have been increasing in a low growth rate for 15 years.The advantages reflect its resourceeffective properties,such as only possessing 80% unit P_2O_5 price of highanalysis phosphate fertilizer,containing the secondary nutrient elements sulfur,calcium,magnesium and silicon etc.,making full use of medium and low grade phosphate rock and decreasing the consumption of sulfuric acid.The value of lowanalysis phosphate fertilizer should be reestimated,and paid great attention and support according to the viewpoint of scientific development.The conventional view should also be changed to these,that the coexistence between the lowanalysis phosphate fertilizer and the highanalysis one will be a longterm course,aimed at establishing a sustainable development,resourceeffective society.