PROBLEM TO BE SOLVED: To provide a seed package obtained by wrapping a seed with a long polyvinyl alcohol(PVA)-based polymer film, and allowing exhibition of a good germination rate even in the case of a seed with weak germinability, and to provide the long PVA-based polymer film used in the seed package.SOLUTION: There is provided the seed package obtained by wrapping the seed with the long PVA-based polymer film. In the seed package, the PVA-based polymer film has a dissolution time of 5-30 s when immersed in water at 5°C, and a rate of shrinkage of &le15% in the longitudinal direction when floated on the water surface at 20°C. Furthermore, there is provided the long PVA-based polymer film for wrapping the seed to afford the seed package. The PVA-based polymer film has the dissolution time of 5-30 s when immersed in water at 5°C, and the rate of shrinkage of &le15% in the longitudinal direction when floated on the water surface at 20°C.COPYRIGHT: (C)2012,JPO&INPIT【課題】種子を長尺のPVA系重合体フィルムで包んでなり発芽力の弱い種子でも良好な発芽率を示すことのできる種子包装体、および、当該種子包装体に使用される長尺のPVA系重合体フィルムを提供すること。【解決手段】種子を長尺のPVA系重合体フィルムで包んでなる種子包装体であって、当該PVA系重合体フィルムは、5℃の水に浸漬した時の溶解時間が5~30秒であり、20℃の水面に浮かべた時の長さ方向の収縮率が15%以下である、種子包装体、および、種子を包んで種子包装体とするための長尺のPVA系重合体フィルムであって、5℃の水に浸漬した時の溶解時間が5~30秒であり、20℃の水面に浮かべた時の長さ方向の収縮率が15%以下である、PVA系重合体フィルム。【選択図】なし
