Disinfection and sterilization method for rapid tissue culture of sweet potatoes

The invention relates to the field of disinfection and sterilization for culture, in particular to a disinfection and sterilization method for rapid tissue culture of sweet potatoes in order to clamp sweet potato seedlings of different sizes, reduce the waste rate of disinfectants and reduce the cost investment. According to the sweet potato seedling fixing device, firstly, the distance between the second clamping piece and the first clamping piece is adjusted, so that sweet potato seedlings of different sizes and specifications can be clamped and fixed, the practicability of the device is improved, and meanwhile, the working efficiency is improved; a first sterilization groove and a fourth sterilization groove in the sterilization circulating supply mechanism are communicated with one another, and a first flow guide pipe to a third flow guide pipe are communicated with one another, so that after a worker pours a disinfectant into the first sterilization groove, the disinfectant is in a winding manner until t