PURPOSE: To obtain a reticular body, which can prevent the flowing and loss of a vegetation base material positively without scaling down knots, sufficient tensile strength of which is maintained as the reticular body for a half year or approximately two years after laying and which decomposes and corrodes.

CONSTITUTION: All members such as warp 4, 5, weft 6, 7, 8, etc., constituting a reticular body main body 1 are composed of high-tenacity rayon or a preservative-treated corrosive blank. Flat yarn having 700-4000 deniers, width of 2-6mm and thickness of 30-365μm is used as warp.