PURPOSE: A culture soil composition for the slope afforestation is provided to offer the proper air permeability, water retention force, and acidity of the composition to the slope surface. CONSTITUTION: A culture soil composition for the slope afforestation is obtained by mixing 20-30 parts of peat by weight, 20-30 parts of organic source by weight, 10-20 parts of vermiculite by weight, 10-20 parts of peat moss by weight, 10-20 parts of coco peat by weight, 10-20 parts of sludge by weight, 10-20 parts of waste paper powder by weight, and 10-20 parts of decomposed granite soil by weight. The organic source is obtained by decaying animal or human excrements with sawdust or tree barks. The sludge is firstly and secondly fermented for removing bad smell and pathogenic microorganisms.본 발명은 토탄 20~30 중량부와 유기질원 20~30 중량부, 질석 10~20 중량부와 피트모스 10~20 중량부, 코코피트 10~20 중량부, 오니 10~20 중량부와 폐지분말 10~20 중량부 및 마사토 10~20 중량부를 배합하여 제조된 비탈면 녹화용 배양토조성물이다.
