When SAPs swelled in water, they absorbed and fixed the fertilizers dissolved in water while they absorbed water.The amounts of absorbed and fixed fertilizers differed with SAPs and fertilizer types.

• 高吸水性树脂在水中溶胀时，在吸收大量水的同时，也吸持溶解在水中的肥料分子或离子，吸持量的大小因高吸水性树脂和肥料种类而不同。