COATED GRANULAR FERTILIZER, SEEDBED COMPOSITION FOR PLANT CULTIVATION USING THE FERTILIZER, GROWING METHOD OF SEEDING USING THE COMPOSITION, CULTIVATION METHOD OF PLANT
PROBLEM TO BE SOLVED: To provide coated granular fertilizer which, for example, can supply a fertilizer component suitable for survival after transplantation in a total amount manuring method in sowing seeds, and can be used for the seedbed composition of plant cultivation.SOLUTION: The coated granular fertilizer takes ten days or longer until an accumulated elution rate of the fertilizer component reaches 3 wt.% in immersed in water at 25°C. In a graph drawn by plotting a vertical axis as a period component elution rate and a horizontal axis as an elapsed time, elution behavior has at least two points of peaks in the graph.【課題】播種時全量施肥法において、例えば、移植後の活着が良好な肥料成分を供給できる、植物栽培用苗床組成物に用いることのできる被覆粒状肥料を提供する。【解決手段】２５℃の水中に浸漬した場合の肥料成分の累積溶出率が３重量％に達するまでの日数が１０日以上である被覆粒状肥料であって、かつ溶出挙動が、縦軸に期間成分溶出率、横軸に経過時間としてプロットして作図したグラフにおいて、該グラフの頂点が少なくとも二箇所存在するものであることを特徴とする被覆粒状肥料。【選択図】図１
