A kind of domain formation material and the earthing engineering method using domain formation material,It is to cohere the domain that multiple coarse grain materials and partial size multiple particulate materials smaller than coarse grain material are integrally formed using slurry material； It is multiple that there is the skeleton that domain is formed close to identical partial size and the coarse grain material of hardness,Multiple gaps are formed between multiple coarse grain materials； Multiple particulate materials are set in the what gap and are cohered around the coarse grain material by the slurry material； The gap of the root growth for plant can be maintained,Under the occasion for carrying out plant cultivation in the very limited spaces such as the side of periphery or pavement of park or building,Also plant is allowed adequately to grow while can ensure that the intensity in domain； And can maintain receive the gap of moisture content,And receive more moisture； And each region of the upper surface in domain has close to identical compression resistance intensity,The upper surface in domain less likely becomes uneven in the Hou that is under pressure.一種地盤形成材及使用地盤形成材的覆土工法，是利用漿材黏結多個粗粒材及粒徑比粗粒材小的多個細粒材成為一體的地盤；多個具有接近相同的粒徑及硬度的粗粒材形成地盤的骨架，多個粗粒材之間形成多個空隙；多個細粒材置於該空隙內且被該漿材黏結在該粗粒材的周圍；能維持供植物的根部生長的空隙，在公園或建築物的外圍或人行道的旁邊等很有限的空間裏進行植栽的場合下，可確保地盤的強度的同時也讓植物充分的生長；且能維持可吸納水份的空隙，而吸納較多的水分；且地盤的上端面的每個區域具有接近相同的耐壓力強度，地盤的上端面較不會在受到壓力後變得凹凸不平。
