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１９８８—１９９３年进行室内模拟和田间试验。结果表明，磷肥施入砂土初期固定速度快，一昼夜内约有１８５～４８６％的磷被固定。固磷能力大小的顺序为轻砂潮土＞细砂潮土＞粗砂潮土。砂土中无机磷组成以Ｃａ１０－Ｐ为主，占７６～８６％；Ｏ－Ｐ次之，占１０％左右；Ａｌ－Ｐ、Ｆｅ－Ｐ较少，Ｃａ８－Ｐ和Ｃａ２－Ｐ最低。磷肥施入砂土后的转化形态和分布与原始土样大体相近。砂土磷的释放可以用Ｃｏｏｋｅ经验式Ｐ＝Ｒｔ＋ｂ描述。砂土固磷能力弱，后效明显。
1988-1993 Indoor simulation and field trials. The results showed that the initial application rate of phosphate fertilizer to sand was fast, and about 185 ~ 486% of phosphorus was fixed within one day and night. Phosphorus ability of the order of the order of light sandy soil> fine sand Chao soil> coarse sand Chao soil. The content of inorganic phosphorus in sand was mainly Ca10-P, accounting for 76-86%; O-P was the second, accounting for about 10%; Al-P, Fe-P less, Ca8-P and Ca2-P the lowest. The transformation forms and distributions of phosphate fertilizer applied to sand were similar to the original soil samples. Sand phosphorus release can be described by Cooke’s empirical formula P = Rt + b. Sand Phosphorus weak ability, obvious effect.