[ Objective ] The research aimed to study the effects of soil properties on water absorption of super absorbent polymers. [ Method]The water absorption ratio of super absorbent polymers in different pH and soil were tested. [Result] The results indicated that the water absorption ratio of super absorbent polymers changed with the pH and soil changing. The water absorption rate was the largest when pH was 7.0. The water absorption ratio was lower in the soil that its clay percent was higher. At the beginning of absorption in the soils, the water absorption ratio of super absorbent polymers was restricted by the soil porosity. With the increase of water absorption time, the ion exchange capacity increased the water absorption ratio decreased gradually by. [ Conclusion] The study reveals the effect mechanism of different pH and soil on the ater absorption of super absorbent polymers, can provide the basis for effectively applying the super absorbent polymers.%[目的]研究了土壤特性时保水剂吸水性能的影响.[方法]分别测试了聚丙烯酸钠系高分子保水剂在不同pH、不同土质土壤中的吸水倍率.[结果]保水剂的吸水倍率随着土壤pH和土质变化而发生变化.在pH为7.0左右,达到最大.黏粒、有机质含量越高吸水倍率越低.吸水初期,吸水倍率主要受土壤孔隙特性的影响;随着吸水时间的加长,土壤溶液中离子交换量增大,吸水倍率逐渐下降.[结论]揭示了不同pH、土质对保水剂吸水性能的影响机理,为高效应用保水剂提供依据.
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