Ameliorating method of soils with excessive salts or inorganic nitrogen by applying easily decomposable carbohydrates having high C/N ratio as a carbon source of soil microorganisms

摘要

PURPOSE: Provided is a method for ameliorating a soil in which nitrogen is excessively accumulated and salts are accumulated by rapidly lowering an electric conductivity and content of inorganic nitrogen of the soil. CONSTITUTION: The method comprises the steps of (i) processing a degradable carbohydrate having high ratio of carbon/nitrogen into solid, or aqueous solution, or mixture thereof; (ii) supplying the obtained material of 1 g to 1,350 kg per 10a(1000m¬2) of soil area, which is one time usage, as carbon source of soil microbes to rapidly lower an electric conductivity and content of inorganic nitrogen of the soil. The carbohydrate is selected from the group consisting of monosaccharide, disaccharide, oligosaccharide, and polysaccharide.