Bagging should be carried out 30 to 50 days after flowering and implemented as soon as possible after fruit thinning. If the second bagging of individual varieties is implemented, the small bag should be bagged on the 25th day after the flower falls, and the big bag should be bagged after 30 days. As mentioned above, the fruit point formation period starts 20 days after the flower falls. If the bagging is too late, the fruit point has been formed, and the effect of bagging rust prevention and making the fruit point shallow will be reduced. For some reason, the bagging is late, and the bagging is only 45 to 60 days after the flowers fall. Although the surface of the fruit without bagging is cleaner, the fruit points are slightly larger and deeper. In other words, although evening bagging also has a certain effect, it has not received the best results.