Anti-freezing of Spring Potato after emergence

At present, the temperature is low and there is much frost, and the spring potato seedlings that have emerged in the plastic film are vulnerable to frost damage, so it is suggested that it is better not to break the film to release seedlings for the time being, and then break the film to release seedlings in time when the temperature rises slightly after the Spring Festival. If there is low temperature and frost after seedling release, straw can be covered on the border to prevent the seedlings from freezing. What should be paid special attention here is that the membrane should be broken and released in time after the temperature picks up, otherwise it will cause burning seedlings due to the high temperature in the film.