What number knife should be used for peeling pomelo trees?

You can use 1 knife to encircle pomelo trees. According to the relevant public information, cutting pomelo trees to protect fruits (ring cutting, ring stripping and ring tying) is mainly used for honey pomelo, Shatian pomelo and Gui You 1 but generally not used. During the withering period of honey pomelo, cutting dry or main branches twice with 1 ring knife can significantly improve the fruit setting rate.