Special soil conditioner for fruits and vegetables as well as preparation method and application of special soil conditioner

The invention relates to the technical field of soil amendments, in particular to a special soil amendment for fruits and vegetables and a preparation method and application thereof, and the preparation method comprises the following steps: (1) sintering a biochar raw material and a pore forming agent to prepare porous biochar; (2) adding liquid dung and the porous biochar prepared in the step (1) into a fermentation tank, and performing primary fermentation; (3) adding lentinus edodes spores and a biological bacterial fertilizer leavening agent into the primary fermentation product obtained in the step (2), stirring, thoroughly decomposing, opening the tank every 0.8-1.2 days, and deflating for 1.5-2.5 hours; (4) fermenting the decomposed substance obtained in the step (3), adding bacillus subtilis, fully stirring, opening the tank, and stacking for secondary fermentation; and (5) after the secondary fermentation is finished, discharging from the fermentation tank, adding EM bacteria and trichoderma harzianu