Task Nurture seedlings suitable for transplantation in nursery boxes where seeds are tightly packed.SOLUTION: In the nursery seedling method in which seeds and fertilizer F are introduced into this soil cultivation S 2, seeds are put into the nursery box 2 for growing seedlings with a prescribed weight or higher so that the vegetation density becomes high, and the fertilizer F Is an amount of slow release that is consumed after a prescribed period of time has elapsed from the time of input and an amount that is not more than half of the amount of seed input in terms of weight ratio is provided before the soil supplement S, After supplying water to the soil cultivation S and before putting in seeds, before putting covered soil, or after covering soil, put them in the nursery box 2, soil soil S, carbonaceous C, It is prepared by mixing an immediate-acting culture fertilizer P. The blending ratio of carbonaceous C is set to more than half of the soil supplement S, and the cultivated fertilizer P is prepared by mixing an amount such that 2000 mg or more is blended per liter of soil cultivation.(FIG. 10)【課題】 種子を密播した育苗箱内で、移植に適した苗を育苗する。【解決手段】 苗を育てる育苗箱2に養分を含む培土Sを投入し、この培土Sに種子と肥料Fを投入して行う育苗方法において、種子は、植生密度が高くなる所定重量以上を投入し、肥料Fは、投入時から所定期間が経過してから消費される緩効性とし、重量比で種子の投入量の半分以下となる量を、培土Sよりも先、培土Sに水を供給する前、培土Sに水を供給した後で且つ種子を投入する前、覆土を投入する前、または覆土を投入した後のいずれかで育苗箱2に投入し、培土Sは、土砂と炭素質Cと、即効性の培養肥料Pを混和して作成し、炭素質Cの配合比率は培土Sの半分以上とし、培養肥料Pは、培土S1リットルにつき2000mg以上が配合される量を混入して作成する。【選択図】 図10
