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2010—2012年研究了长期施肥条件下(1988—2012年)栗褐土速效磷、水溶性磷和生物有效磷积累量及三者之间的相关关系,并讨论了水溶性磷与土壤磷饱和度的相关关系。结果表明:长期施用磷肥和有机肥可显著增加栗褐土速效磷、水溶性磷和生物有效磷的含量且以高量有机肥配施化肥处理增加最为显著;P2O5用量为75kg·hm-2、有机肥用量为45000kg·hm-2的处理在2012年时,土壤磷饱和度大于25%,这显著增加了栗褐土磷素流失风险;速效磷、水溶性磷和生物有效磷的之间的相关性均达到极显著水平,其中速效磷与水溶性磷之间呈指数关系;磷饱和度与水溶性磷呈极显著指数关系。
2010-2012 studied the relationship between the contents of available phosphorus, water-soluble phosphorus and bio-available phosphorus in chestnut soil under long-term fertilization (1988-2012) and the relationship among the three, and discussed the relationship between water-soluble phosphorus and soil phosphorus saturation Degree of correlation. The results showed that the long-term application of P and organic fertilizer could significantly increase the content of available P, soluble P and bioavailable P in the chestnut soil and the most significant increase was with the application of high amount of organic fertilizer; the dosage of P2O5 was 75kg · hm-2, The treatment with 45,000 kg · hm-2 organic fertilizer had a soil P saturation of more than 25% in 2012, which significantly increased the risk of phosphorus loss in chestnut brown soil. The contents of available phosphorus, water-soluble phosphorus and bio-available phosphorus The correlations reached extremely significant levels, of which available phosphorus and water-soluble phosphorus showed an exponential relationship; phosphorus saturation and water-soluble phosphorus showed a very significant exponential relationship.