Stone-based semi-interpenetrating network structure porous soil conditioner as well as preparation method and application thereof

The invention discloses a stone-based porous soil conditioner with a semi-interpenetrating network structure as well as a preparation method and application thereof, and belongs to the technical field of soil conditioners. The soil conditioner comprises the following components in parts by weight: 120-240 parts of a potassium hydroxide aqueous solution with the mass percent of 50%, 60-100 parts of acrylic acid, 30-80 parts of acrylamide and 10-70 parts of coal gangue, 10 to 100 parts of polyacrylamide; the foaming agent is prepared from the following components in parts by weight: 0.05-1.0 part of an initiator, 0.05-1.0 part of a cross-linking agent and 200-400 parts of deionized water. The conditioner integrates water retention and conditioning and repairing functions, not only can absorb and retain water, but also can increase the water absorption and water retention capacity of soil particles, increase the infiltration rate of soil and prevent soil hardening, and compared with a single soil conditioner or