Abstract: In certain conditions, by the respiration of the product itself and the permeation through the plastic films, this productcould spontaneously control the concentration of oxygen and carbon dioxide in the storage preservation bags. According to thelinear relationship, the equation between the concentration of oxygen or carbon dioxide and thickness (D), area (A), storagen (w)has been established. The storage preservation bags, which have been designed according to this equation, could preserve leek-balt perfectly as long as 90 days, containing of VC, and chlorophyll with edibility rate satisfactorily.

Key words: leek-balt, storage preservation bags, designed