摘要 : The nature of soil fertilizer reaction products in soils depends primarily upon the type and nature of fertilizer and to some extent on soil properties. Fluventic Haplustept soil from Punjab was treated with saturated solution of ... 展开 The nature of soil fertilizer reaction products in soils depends primarily upon the type and nature of fertilizer and to some extent on soil properties. Fluventic Haplustept soil from Punjab was treated with saturated solution of single superphosphate for 1 hour, 6 hour and 3 days. Filtrate solutions after completion of reaction period, incubated for 15 days and 3 months at 25 ± 2 ℃ temperature and subjected to XRD analysis. X-ray diffraction analysis of precipitates stored for 15 days elucidated brushite (CaHPO_4.2H_2O), variscite (AIPO_4.2H_2O) and potassium taranakite [Al_5K_3H_6(PO_4)_8.18H_2O] as the major reaction products. Storing the filtrates for 3 months, resulted in the formation of octacalcium phosphate [Ca_4H(PO_4)_3.2.5H_2O] as the dominant reaction product in addition to brushite, potassium taranakite and variscite in the precipitates. 收起