Straw biochar based pot cultivation media and system for vegetables

The invention discloses straw biochar based pot cultivation media and system for vegetables, and belongs to the technical field of agriculture. Four layers of different media are laid from bottom to top in sequence and specifically comprise a medium layer, an organic fertilizer layer, a root promoting layer and a seedbed layer, wherein the medium layer comprises modified straw biochar, river mud and/or long-acting nitrogen fertilizer; the organic fertilizer layer comprises rotten straw, organic fertilizer and/or fine river sand; the root promoting layer comprises modified straw biochar, composite fertilizer and/or kaolin; the seedbed layer comprises peat, vermiculite and/or perlite. The raw material composition is rich, functions are matched with physiological properties of crop cultivation, the cultivation media are prepared by layers according to nutrient requirements and physiological development characteristics of crops, soil physical and chemical properties of different root layers can be controlled, nut