| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyvinyl alcohol film for a seed tape, which is excellent in resolvability in water and soil, does not inhibit germination even in a small-sized seed particularly inferior in germinability by a swollen PVA film and is excellent in germinability and growth-promoting property. <P>SOLUTION: There are provided: a polyvinyl alcohol film for a seed tape, which contains a polyvinyl alcohol-based resin (A) having viscosity of 4 wt.% aqueous solution at 20°C of 5-50 [mPa s] and a saponification degree of 70-85 mol%; and/or a polyvinyl alcohol film which contains a polyvinyl alcohol-based resin (a1) having the viscosity of 4 wt.% aqueous solution at 20°C of 20-60 [mPa s] and the saponification degree of 70-85 mol%, and a polyvinyl alcohol-based resin (a2) having the viscosity of 2-20 [mPa s] and the saponification degree of 70-85 mol%, and has a difference of 5 [mPa s] or more of the above viscosity between the resins (a1) and (a2). <P>COPYRIGHT: (C)2012,JPO&INPIT |
