緩かん効こう性せい肥ひ料りょう

noun

controlled-release fertilizer; slow-acting fertilizer

Technical term in agriculture and horticulture for fertilizers that release nutrients gradually over time.

• 緩かん効こう性せい肥ひ料りょうは、一いち度どに多おおくの栄えい養ようが溶とけ出ださないように設せっ計けいされている。

  Controlled-release fertilizers are designed so that a large amount of nutrients does not dissolve all at once.