| 摘要 |
PROBLEM TO BE SOLVED: To provide a biodegradable agricultural mulch film retaining its sufficient mechanical strength during use and returning to the natural environment through undergoing biodegradation after use, improved in forming processability and constituting no hindrance to vegetable cultivation. SOLUTION: The agricultural mulch film is such one that a film layer made by forming a resin material I good in biodegradability in wet soil of >40°C but poor in soil of normal temperatures and a film layer made by forming a highly biodegradable resin material II comprising an aliphatic polyester are laminated with each other. Thus, this mulch film can be biodegraded in soil. COPYRIGHT: (C)2004,JPO
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