PROBLEM TO BE SOLVED: To provide a lawn vegetation construction method letting a solidified layer which has a specific fine porous structure suppressing growth of stem roots of lawn, and securing growth of capillary roots of lawn, and capable of extremely reducing lawn mowing work, and to provide a composition mixture.SOLUTION: This lawn vegetation construction method which can suppress a prescribed height of an above-ground part includes a process of digging soil to 3-10 cm depth, and a process of forming a solidified layer which has 1-6 cm thickness, and thin diameter holes making it difficult for stem roots of lawn to penetrate, through evenly spreading on the dug bottom part, the composition mixture which is obtained by adding 20-30 wt.% of water to a mixture which includes at a weight ratio, 75-85 wt.% of mountain sand of a particle diameter of 2-7 mm, 10-15 wt.% of portland cement, a little nonionic surface active agent, 3-5 wt.% of charcoal of a particle diameter of 100-300 &mum, and 3-5 wt.% of pearlite of a particle diameter of 100-300 &mum, and stirring and kneading the mixture. Furthermore, the method includes a process of laying on the solidified layer, black soil or sodding soil at a thickness of 2-4 cm, a process of vegetating a lawn sheet on the laid soil surface, and a process of evenly spreading joint soil thereon.COPYRIGHT: (C)2009,JPO&INPIT【課題】特殊な微細なポーラス構造を有する固化層が芝の幹根の成長を抑制する一方で、芝の毛細根の成長は確保して、芝刈り作業を極めて少なくすることのできる芝植生工法および組成混合物を提供する。【解決手段】本発明は、土壌を3~10cmの深さに掘削をする工程と、上記掘削底部に、重量比で粒径2~7mmの山砂75~75wt%と、ポルトランドセメント10~15wt%と、若干のノニオン系界面活性剤と、粒径100~300μmの炭3~5wt%と、粒径100~300μmのパーライト3~5wt%との混合物に20~30wt%の水を加えて撹拌混練した組成混合物を敷均して、芝の幹根の浸入困難な細径の孔を有する厚さ1~6cmの固化層を形成する工程と、上記固化層の上に黒土又は芝張り土を厚さ2~4cmに敷設する工程と、上記敷設した土壌面の上に芝のシートを植生する工程と、その上に目土を敷均する工程とから成り、地上部の所定高さを抑制することができる。【選択図】 図1
