The invention relates to a method for preserving
spinach and belongs to the technical field of vegetable preservation. The method comprises the following steps of: (1), harvesting the
spinach which meets a harvesting specification in time; (2), quickly precooling the
spinach to be between 4 and 7 DEG C; (3), subpackaging the spinach into a special spinach freshness protection
package, fastening a pocket opening, and placing the
package into a
refrigeration storage with the temperature of between -1 and 2 DEG C and a
humidity of 90 to 98 percent; then unfastening the pocket opening after 2 to 3 hours, inserting a blank
pipe with an inner
diameter of 30mm, then fastening the pocket opening for keeping venting quality of the pocket opening, and automatically adjusting a gaseous environment in the
package, wherein the content of CO2 is 2.5 to 8 percent and the content of O2 is 8 to 12 percent; and (4) unfastening the pocket opening every 5 to 7 days serving as a period, ventilating for 2 to 3 hours, and then inserting the blank
pipe again for the management of fastening the opening until preservation is completed. The method has low cost, simple and easy operation, good preservation effect, and the spinach keeps excellent commercial quality after 25 days; and the method can be applied to broad vegetable growers, major dealers or
processing enterprises.