采用蒋柏藩、顾益初提出的土壤无机磷组分测定方法,在50d的培养过程中对滨海盐土的各无机磷组分进行了跟踪测定。结果表明:施入盐土中的无机磷在短期内主要增加土壤中的Ca2-P和Ca8-P的含量,而对A1-P、Fe-P和O-P的影响较小;施入盐土的无机磷首先转化成Ca2-P,然后再向Ca8-P、Ca10-P、Al-P、Fe-P和O-P转化;培养过程中,水分和温度的有利条件促进了土壤微生物的活动,加强了微生物对无机磷的固定。 Based on the method of measuring inorganic inorganic phosphorus in soil prepared by Jiang Baofan and Gu Yichu, the inorganic phosphorus fractions in coastal saline were tracked during the 50 days of cultivation. The results showed that the contents of Ca2-P and Ca8-P in the soil were mainly increased by inorganic phosphorus applied into the saline soil in the short term, but had little effect on the Al-P, Fe-P and OP. First, Ca2-P was transformed into Ca2-P and then to Ca8-P, Ca10-P, Al-P, Fe-P and OP. During the cultivation process, favorable conditions of water and temperature promoted the activity of soil microorganisms, Inorganic phosphorus fixation.