The fixation of phosphate by pure CaCO3 was studied. The results indicated that at lower initial phosphorus concentrations, the phosphorus was mainly adsobed on CaCO3 concentrations, precipitations occurred, and a large amount of phosphorus could be fixed by CaCO3. The fixation of phosphorus by calcareous soils was then studied. The results indicated that at lower range of phosphorus concentrations (0-200 μgP/ml), clay played a major role in fixing phosphorus, while at higher concentrations(>200 μgP/ml), CaCO3 became important. Thus it is showed that calcareous soils have high fixation power of phosphorus.
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尹金来,曹翠玉,史瑞和.徐淮地区石灰性土壤磷素固定的研究[J].土壤学报,1989,26(2):131-138. Yin Jinlai, Cao Cuiyu, shi Ruihe. STUDY ON THE PHOSPHORUS FIXATION OF CALCAREOUS SOILS IN XU-HUAI DISTRICTS[J]. Acta Pedologica Sinica,1989,26(2):131-138.