preserve moisture and fertility (in the soil)

• 保水保肥

preserve moisture and fertility (in the soil)的用法和样例：

例句

1. The results showed that application rate of each time should not be high because of its low absorbability and low fertility preserving capability.
   结果表明，煤矸石风化物由于吸附性能低，保肥性差，所以施用化肥时一次用量不宜过大。