低磷水平下马尾松种源磷效率与磷素利用效率有关，而与磷素吸收效率相关性较小，磷效率和磷素利用效率高的种源其干物质积累量较高。
PE was significantly and positively related to P use efficiency, not related to P absorption. The provenances with higher PE had greater dry matter accumulation.
不同生育阶段氮和磷的吸收与积累量最大值在结荚至鼓粒期，分别占总量的47.74%和44.00%。
The absorption and accumulation of Nitrogen, Phosphorous were the highest at the period from pod-setting to pod-filling, account for 47.74% and 44.00% of total respectively.
对于相同土壤磷水平的土壤，磷素在上层土壤积累量较大，随着土层深度的加深，磷素含量逐渐减小。
In soils with the same phosphorus levels, the contents of various forms of phosphorus were accumulated mainly in the profile of a surface layer and decreased gradually with the depth of the profile.
对于相同土壤磷水平的土壤，磷素在上层土壤积累量较大，随着土层深度的加深，磷素含量逐渐减小。
In soils with the same phosphorus levels, the contents of various forms of phosphorus were accumulated mainly in the profile of a surface layer and decreased gradually with the depth of the profile.
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