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本试验是为了弄清将农场厩肥与重过磷酸钙二者加到土壤中的混合处理是否能增加磷的溶解度和有多大的实际意义。供试的三种石灰质土壤的磷肥水平较低。分两组处理:重过磷酸钙和农场厩肥混合施用和分开施用。
The purpose of this experiment was to see if the combination of adding both farm manure and SSPT to the soil would increase the solubility of P and give much practical significance. The three calcareous soils tested had a lower level of phosphate fertilizer. Divided into two groups: superphosphate and farm manure mixed and separately administered.