| 摘要 |
PROBLEM TO BE SOLVED: To provide an aquatic environment preservation container body permitting the quicker supply of nutrition from a manure material to a water area and the more effective supply of nutrition for the luxuriant growth of algae and microorganisms in regard to the aquatic environment preservation container body for supplying nutrition to algae, microorganisms, etc. to cause the luxuriant growth of algae and microorganisms for the preservation of an aquatic environment.SOLUTION: An aquatic environment preservation container body is formed by storing a manure material containing steel slag, or a water permeable bag body filled with the manure material, in a container of box shape comprising a bottom face part serving as an installation face, and an upper face part and side wall parts. A plurality of apertures are formed in the upper face part and the bottom face part such that the ratio of the total area of the apertures to the total area of the upper face part, bottom face part and side wall parts is 0.2-2.0% and that the ratio of an area of the apertures formed in the bottom face part to the total area of the apertures formed in the whole container is 30-50%. |
