In order to study the effect of the methods of application of phosphatic fertilizer on the yield of crops in dry land crop-rice rotation, pot and field experiments on various soils of different pH value and phosphorus composition were conducted. Results obtained showed that the response in yield of wheat or soybean to superphosphate was much more prominent than that of rice in the acid and neutral paddy soils containing large amount of non-occluded iron phosphates. Furthermore, there was good residual effect of superphosphate on rice when the superphosphate was applied to its proceeding crops(wheat or soybean).Additional application of superphosphate to rice in the soybean-rice rotation gave no increase in its yield, whereas the supplementary supply of phosphatic fertilizer to soybean in the rotation of rice-autumn soybean gave marked increase in yield of this subsequent crop.