Method for carbonizing forestry waste in red-soil hilly area and application of method in soil acidity improvement

The invention discloses a method for carbonizing forestry waste in a red-soil hilly area and application of the method in soil acidity improvement and belongs to the technical field of waste recycling and soil improvement. The method includes: (1), air-drying collected forestry waste naturally, and crushing to 1-5 cm; (2), carbonizing in an electric furnace or other sealable furnaces; (3), after carbonizing, naturally cooling to obtain a biochar product. The application refers to: (1), crushing the biochar product to 1 mm in diameter, and getting ready for use before application; (2), applying the biochar product solely or applying with other fertilizer; (3), spreading to the surface of soil, and tilling to a depth of 0-30 cm; (4), watering regularly to keep soil humidity to 15-20%. The biochar product may improve the soil acidification problem, improve soil quality and promote agricultural production; the materials are taken locally, and the biochar product is easy to popularize and has various benefits such as economic, environmental and social benefits.