Application potassium-polyacrylate water retaining agent can strengthen water retention ability of red soil and sandy soil.

施用聚丙烯酸钾盐型保水剂可以增强红壤与风沙土的持水能力。

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The result shows that the high polymers VAM and PHM can not only enhance the water retention ability and the available water content, but also prevent the evaporation from the surface soil.

研究结果表明：高聚物不仅能提高土壤的持水力和增加土壤水对植物的有效性，而且还能抑制土壤水的蒸发。

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The functions of SAPs were brief reviewed, such as the ability of improving soil structure and water retention, inhibiting water evaporation, promoting crop growth and output.

高吸水树脂可以通过抑制水分蒸发，增加土壤含水量以及改良土壤结构等方面，起到保水和促进作物生长发育以及提高产量的作用。

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