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对沈阳地区棕壤定位试验地各施肥处理土壤按Ｂｏｗｍｅｎ和Ｃｏｌｅ建议的分级方法进行测定。结果表明，活性、中等活性、中等稳定性和高稳定性有机磷分别占有机磷总量的４．３％、５４．５％、３６．１％和４．９％。与磷素营养有关的活性和中等活性的有机磷约占６０％左右。施肥各处理土壤活性和中等活性有机磷含量和比例均高于对照，并呈逐年上升趋势；而中等稳定性和高稳定性有机磷组分与前二者相反。施用有机肥，可以增加土壤有机磷各组分的含量，而化肥则促进各组分的相互转化。
Soil fertilization in brown locating experiments in Shenyang was conducted according to Bowmen and Cole’s recommended grading method. The results showed that the active, medium activity, medium stability and high stability of organic phosphorus accounted for 4.3%, 54.5%, 36.1% and 4.9% of the total organic phosphorus respectively. Phosphorus nutrition-related activity and moderate activity of organic phosphorus accounts for about 60%. The content and proportion of soil active and moderately active organic phosphorus in fertilization treatments were higher than those in the control, and showed an upward trend year by year. However, the compositions of medium and high stability organic phosphorus were opposite to the former two. Application of organic fertilizer, can increase the content of soil organic phosphorus components, and fertilizers promote the conversion of each component.