| 摘要 |
PROBLEM TO BE SOLVED: To provide a biodegradable net utilizing well fiber of a polylactic acid resin, having tensile strength substantially equal to that of a net made of polyethylene until tree planting, and protection of a slope by vegetation is achieved, biodegrading into water and carbon dioxide in two or three years after trees are planted, and gentle for the environment. SOLUTION: A biodegradable net 1 braided by using one kind or a plurality of threads among threads composed of 10 to 300 threads of flat yarn of polylactic acid resin fiber having 300 to 3000 denier, monofilament of polylactic acid resin fiber having 100 to 3000 denier, and multifilament of polylactic acid resin fiber having 5 to 50 denier is spread on a slope 2. A vegetation material 3 in which plant seeds (a) are mixed is sprayed thereon. |
