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在室内研究了淹水和风干过程对两种水稻土磷吸附、解吸及有效磷的影响。结果表明，淹水过程明显增加土壤对磷的吸附，降低磷解吸和有效磷，而淹水后的风干过程则可显著减少土壤磷吸附，提高磷解吸量和有效磷含量。微生物对磷的矿化或活化作用是淹水土壤风干过程提高土壤有效磷的主要原因之一。建议在评价磷对水稻的有效性时应采用新鲜样品。
The effects of flooding and air-drying processes on phosphorus adsorption, desorption and available phosphorus in two paddy soils were studied indoors. The results showed that the flooding process significantly increased the adsorption of phosphorus to the soil, reduced the desorption of phosphorus and available phosphorus, while the air-drying process after flooding significantly reduced soil phosphorus adsorption and increased the amount of phosphorus desorption and available phosphorus. Microbial mineralization or activation of phosphorus is one of the main reasons for flooding the soil to dry the soil to increase available phosphorus. It is recommended that fresh samples should be used in evaluating the effectiveness of P on rice.