Low cost maize stover biochar as an alternative to inorganic fertilizer for improvement of soil chemical properties, growth and yield of tomatoes on degraded soil of Northern Uganda

低成本玉米秸秆生物炭作为无机肥料的替代品，用于改善乌干达北部退化土壤的土壤化学性质，促进番茄生长和提高产量