manurial effect的用法和樣例：
例句
- Phosphorus is an important nutrient for animals and plants, the phosphorus level in soil determines the effect of phosphatic fertilizer.
摘要磷是動植物生命活動離不開的重要營養元素，土壤的供磷水平是決定磷肥肥效的主要因素。 - The effect of partially acidulated phosphate rock compound fertilizer and the degeneration mechanism of water soluble phosphate in soil were introduced.
介紹了部分酸化磷礦一步法制複合肥的肥效及水溶磷在土壤中的退化機理。
