The present invention provides a fertilizer application block for algae beds that enables the fertilizer to be fixed in the algae fields for a necessary period of time and at the same time facilitates nutrient management. SOLUTION: Ripe compost, necessary nutrients, iron slug and solidification accelerating thickener are kneaded and solidified by vibration pressurization in a mold of suitable shape. Match the composition to the environment of each target seaweed bed. [Selection] Figure 3【課題】肥料の藻場への必要期間定着を可能にし、同時に養分管理を容易にすることができる藻場用施肥ブロックを提供する。【解決手段】完熟堆肥、必要養分、鉄スラッグと固形化促進増粘剤を混錬し適合形状の型で振動加圧により固形化させる。配合構成を対象各藻場の環境に合わせる。【選択図】図３
