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河北石灰性潮土是以钙磷为主的无机磷形态特征，钙磷分为Ｃａ２－Ｐ、Ｃａ－Ｐ和Ｃａ１。一Ｐ三种形态。Ｃａ８—Ｐ和Ｃａ１０－Ｐ属难溶性磷酸盐，二者共计占无机磷总量的８３．７％。按潮土耕层速效磷丰缺指标衡量，河北潮土（耕层）速效磷处于极度缺乏状态。用土壤磷素活化系数表征潮土全磷与速效磷的变异状态，河北潮土全磷不易转化为速效磷形态。潮土中ＣａＣＯ２使磷酸盐逐渐富钙化而降低有效度，速效磷与ＣａＣＯ３两者在土壤中的含量数值皇显著负相关。
Calcareous alluvial soil in Hebei Province is mainly characterized by calcium and phosphorus inorganic phosphorus, calcium and phosphorus are divided into Ca2-P, Ca-P and Ca1. A three forms of P. Ca8-P and Ca10-P are insoluble phosphates, both accounting for 83.7% of the total inorganic phosphorus. According to tillage soil available phosphorus abundance of lack of indicators, Hebei Chao soil (tillage) available phosphorus in the extreme lack of status. The variation of total phosphorus and available phosphorus in alluvial soil was characterized by the activation coefficient of soil phosphorus, and the total phosphorus in alluvial soils in Hebei was not easily transformed into the available phosphorus form. CaCO 2 in the soils makes phosphate gradually rich in calcification and decreases the effective degree. There is a significant negative correlation between available phosphorus and the content of CaCO3 in soils.