根域の薄膜化による軽量セル育苗法の開発 : 発芽実生根のシートへの着生法(繁殖・育苗)  [in Japanese] Development of Lightened Cellular Seedling Raising System on Papery Root Zone : 1. Germinated Seedlings Rootage on the Sheet (Propagation & Transplant Production)  [in Japanese]

培地を無くし,遮根できる布(底面遮板材)を用いて底面給液することにより,根域を薄層化することで,セル成型育苗システムを軽量化しだセルシード育苗法を開発した.底面遮根材および根域を保護する資材(根域保護材)が,苗の接着性,生存率,地上部生体重に及ぼす影響をレタス,ハクサイ,トマトで調査した.底面保護材にテトロン200lpiまたはテトロン250lpiを用いると,シートを垂直にぶら下げた程度では苗は全く落下せず,苗を剥がしても根が傷がつかす,適当な苗の接着性があった.底面保護材にテトロン200lpi,根域保護材に80℃で乾燥したピートモス200〜400ml/シートの組み合わせで,対照のセルトレイ区よりも地上部生体重が大きくなった.しかし,レタスではセルシートを根域保護材で被覆した場合,生存率が低下した.

We have newly developed a cellular seedlings raising system that is simple and allows seedlings to grow on papery root zone with lean medium. This seedling raising system was named the "cell sheet" system. In this system, plant roots grow horizontally on a cloth that the roots cannot penetrate (sheet cloth). The roots are covered by material that protects the roots (covering material). Both capillary watering and hydroponic watering supply the roots. The effects of the sheet cloth and the covering material on the fresh weight, survival rate and adherence of seedlings, were investigated. If the sheet cloth was Tetoron200lpi or Tetoron250lpi, the extent of bonding in the seedlings was suitable; the seedlings did not peel off even when the cell sheets were hung vertically, while most roots were not damaged when the seedlings were peeled off. When the sheet cloth was Tetoron200lpi and the covering material was 200 or 400 ml of peat-moss dried at 80℃, the cell sheet seedlings grew bigger than those in the ordinary cellular seedling raising system with the same size cell as the cell sheet. However, the survival rate of lettuce decreased, when cell sheets were covered with peat-moss.