日本农林省农业技术研究所和日本东武化学公司最近合作研究出一种使用土和氧化镁制作建筑材料的新技术，用这种技术生产的建筑材料的坚硬度与混凝土一样，并具有环保作用。 这一新技术应用了氧化镁与水分相结合而生成凝胶状氢氧化镁的现象，氢氧化镁与土壤里的磷酸及二氧化碳发 Japan’s Agriculture, Forestry and Fisheries Institute of Agricultural Technology and Japan’s Tobu Chemical Co., Ltd. recently collaborated on a new technology for making building materials using earth and magnesia. The building materials used in this technology are as rigid as concrete and have an environmental effect . This new technology uses a combination of magnesium oxide and water to form gel-like magnesium hydroxide phenomenon, magnesium hydroxide and phosphoric acid in the soil and carbon dioxide